libavformat: remove the ffmenc and ffmdec muxer and demuxers

Used only by ffserver.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>

6 files changed, 1 insertions, 1305 deletions

diff --git a/Changelog b/Changelog
index 028c20f482..c87977d6a9 100644
--- a/Changelog
+++ b/Changelog
@@ -36,6 +36,7 @@ version <next>:
 - aiir audio filter
 - aiff: add support for CD-ROM XA ADPCM
 - Removed the ffserver program
+- Removed the ffmenc and ffmdec muxer and demuxer
 
 
 version 3.4:
diff --git a/libavformat/Makefile b/libavformat/Makefile
index cb70eac920..de0de921c2 100644
--- a/libavformat/Makefile
+++ b/libavformat/Makefile
@@ -161,8 +161,6 @@ OBJS-$(CONFIG_EA_DEMUXER)                += electronicarts.o
 OBJS-$(CONFIG_EAC3_DEMUXER)              += ac3dec.o rawdec.o
 OBJS-$(CONFIG_EAC3_MUXER)                += rawenc.o
 OBJS-$(CONFIG_EPAF_DEMUXER)              += epafdec.o pcm.o
-OBJS-$(CONFIG_FFM_DEMUXER)               += ffmdec.o
-OBJS-$(CONFIG_FFM_MUXER)                 += ffmenc.o
 OBJS-$(CONFIG_FFMETADATA_DEMUXER)        += ffmetadec.o
 OBJS-$(CONFIG_FFMETADATA_MUXER)          += ffmetaenc.o
 OBJS-$(CONFIG_FIFO_MUXER)                += fifo.o
diff --git a/libavformat/allformats.c b/libavformat/allformats.c
index 6a9b9883c9..ec8409630e 100644
--- a/libavformat/allformats.c
+++ b/libavformat/allformats.c
@@ -120,7 +120,6 @@ static void register_all(void)
     REGISTER_MUXDEMUX(EAC3,             eac3);
     REGISTER_DEMUXER (EPAF,             epaf);
     REGISTER_MUXER   (F4V,              f4v);
-    REGISTER_MUXDEMUX(FFM,              ffm);
     REGISTER_MUXDEMUX(FFMETADATA,       ffmetadata);
     REGISTER_MUXER   (FIFO,             fifo);
     REGISTER_MUXDEMUX(FILMSTRIP,        filmstrip);
diff --git a/libavformat/ffm.h b/libavformat/ffm.h
deleted file mode 100644
index c445f472f7..0000000000
--- a/libavformat/ffm.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * FFM (ffserver live feed) common header
- * Copyright (c) 2001 Fabrice Bellard
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef AVFORMAT_FFM_H
-#define AVFORMAT_FFM_H
-
-#include <stdint.h>
-#include "avformat.h"
-#include "avio.h"
-
-/* The FFM file is made of blocks of fixed size */
-#define FFM_HEADER_SIZE 14
-#define FFM_PACKET_SIZE 4096
-#define PACKET_ID       0x666d
-
-/* each packet contains frames (which can span several packets */
-#define FRAME_HEADER_SIZE    16
-#define FLAG_KEY_FRAME       0x01
-#define FLAG_DTS             0x02
-
-enum {
-    READ_HEADER,
-    READ_DATA,
-};
-
-typedef struct FFMContext {
-    const AVClass *class;
-    /* only reading mode */
-    int64_t write_index, file_size;
-    int read_state;
-    uint8_t header[FRAME_HEADER_SIZE+4];
-
-    /* read and write */
-    int first_packet; /* true if first packet, needed to set the discontinuity tag */
-    int packet_size;
-    int frame_offset;
-    int64_t dts;
-    uint8_t *packet_ptr, *packet_end;
-    uint8_t packet[FFM_PACKET_SIZE];
-    int64_t start_time;
-    int server_attached;
-} FFMContext;
-
-#endif /* AVFORMAT_FFM_H */
diff --git a/libavformat/ffmdec.c b/libavformat/ffmdec.c
deleted file mode 100644
index de6ac27252..0000000000
--- a/libavformat/ffmdec.c
+++ /dev/null
@@ -1,878 +0,0 @@
-/*
- * FFM (ffserver live feed) demuxer
- * Copyright (c) 2001 Fabrice Bellard
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <stdint.h>
-
-#include "libavutil/imgutils.h"
-#include "libavutil/internal.h"
-#include "libavutil/intreadwrite.h"
-#include "libavutil/intfloat.h"
-#include "libavutil/opt.h"
-#include "libavutil/avassert.h"
-#include "libavutil/avstring.h"
-#include "libavutil/pixdesc.h"
-#include "libavcodec/internal.h"
-#include "avformat.h"
-#include "internal.h"
-#include "ffm.h"
-#include "avio_internal.h"
-
-static int ffm_is_avail_data(AVFormatContext *s, int size)
-{
-    FFMContext *ffm = s->priv_data;
-    int64_t pos, avail_size;
-    ptrdiff_t len;
-
-    len = ffm->packet_end - ffm->packet_ptr;
-    if (size <= len)
-        return 1;
-    pos = avio_tell(s->pb);
-    if (!ffm->write_index) {
-        if (pos == ffm->file_size)
-            return AVERROR_EOF;
-        avail_size = ffm->file_size - pos;
-    } else {
-    if (pos == ffm->write_index) {
-        /* exactly at the end of stream */
-        if (ffm->server_attached)
-            return AVERROR(EAGAIN);
-        else
-            return AVERROR_INVALIDDATA;
-    } else if (pos < ffm->write_index) {
-        avail_size = ffm->write_index - pos;
-    } else {
-        avail_size = (ffm->file_size - pos) + (ffm->write_index - FFM_PACKET_SIZE);
-    }
-    }
-    avail_size = (avail_size / ffm->packet_size) * (ffm->packet_size - FFM_HEADER_SIZE) + len;
-    if (size <= avail_size)
-        return 1;
-    else if (ffm->server_attached)
-        return AVERROR(EAGAIN);
-    else
-        return AVERROR_INVALIDDATA;
-}
-
-static int ffm_resync(AVFormatContext *s, uint32_t state)
-{
-    av_log(s, AV_LOG_ERROR, "resyncing\n");
-    while (state != PACKET_ID) {
-        if (avio_feof(s->pb)) {
-            av_log(s, AV_LOG_ERROR, "cannot find FFM syncword\n");
-            return -1;
-        }
-        state = (state << 8) | avio_r8(s->pb);
-    }
-    return 0;
-}
-
-/* first is true if we read the frame header */
-static int ffm_read_data(AVFormatContext *s,
-                         uint8_t *buf, int size, int header)
-{
-    FFMContext *ffm = s->priv_data;
-    AVIOContext *pb = s->pb;
-    int fill_size, size1, frame_offset;
-    uint32_t id;
-    ptrdiff_t len;
-    int64_t last_pos = -1;
-
-    size1 = size;
-    while (size > 0) {
-    redo:
-        len = ffm->packet_end - ffm->packet_ptr;
-        if (len < 0)
-            return -1;
-        if (len > size)
-            len = size;
-        if (len == 0) {
-            if (avio_tell(pb) == ffm->file_size) {
-                if (ffm->server_attached) {
-                    avio_seek(pb, ffm->packet_size, SEEK_SET);
-                } else
-                    return AVERROR_EOF;
-            }
-    retry_read:
-            if (pb->buffer_size != ffm->packet_size) {
-                int64_t tell = avio_tell(pb);
-                int ret = ffio_set_buf_size(pb, ffm->packet_size);
-                if (ret < 0)
-                    return ret;
-                avio_seek(pb, tell, SEEK_SET);
-            }
-            id = avio_rb16(pb); /* PACKET_ID */
-            if (id != PACKET_ID) {
-                if (ffm_resync(s, id) < 0)
-                    return -1;
-                last_pos = avio_tell(pb);
-            }
-            fill_size = avio_rb16(pb);
-            ffm->dts = avio_rb64(pb);
-            frame_offset = avio_rb16(pb);
-            avio_read(pb, ffm->packet, ffm->packet_size - FFM_HEADER_SIZE);
-            if (ffm->packet_size < FFM_HEADER_SIZE + fill_size || frame_offset < 0) {
-                return -1;
-            }
-            ffm->packet_end = ffm->packet + (ffm->packet_size - FFM_HEADER_SIZE - fill_size);
-            /* if first packet or resynchronization packet, we must
-               handle it specifically */
-            if (ffm->first_packet || (frame_offset & 0x8000)) {
-                if (!frame_offset) {
-                    /* This packet has no frame headers in it */
-                    if (avio_tell(pb) >= ffm->packet_size * 3LL) {
-                        int64_t seekback = FFMIN(ffm->packet_size * 2LL, avio_tell(pb) - last_pos);
-                        seekback = FFMAX(seekback, 0);
-                        avio_seek(pb, -seekback, SEEK_CUR);
-                        goto retry_read;
-                    }
-                    /* This is bad, we cannot find a valid frame header */
-                    return 0;
-                }
-                ffm->first_packet = 0;
-                if ((frame_offset & 0x7fff) < FFM_HEADER_SIZE) {
-                    ffm->packet_end = ffm->packet_ptr;
-                    return -1;
-                }
-                ffm->packet_ptr = ffm->packet + (frame_offset & 0x7fff) - FFM_HEADER_SIZE;
-                if (!header)
-                    break;
-            } else {
-                ffm->packet_ptr = ffm->packet;
-            }
-            goto redo;
-        }
-        memcpy(buf, ffm->packet_ptr, len);
-        buf += len;
-        ffm->packet_ptr += len;
-        size -= len;
-        header = 0;
-    }
-    return size1 - size;
-}
-
-/* ensure that actual seeking happens between FFM_PACKET_SIZE
-   and file_size - FFM_PACKET_SIZE */
-static int64_t ffm_seek1(AVFormatContext *s, int64_t pos1)
-{
-    FFMContext *ffm = s->priv_data;
-    AVIOContext *pb = s->pb;
-    int64_t pos;
-
-    pos = FFMIN(pos1, ffm->file_size - FFM_PACKET_SIZE);
-    pos = FFMAX(pos, FFM_PACKET_SIZE);
-    ff_dlog(s, "seek to %"PRIx64" -> %"PRIx64"\n", pos1, pos);
-    return avio_seek(pb, pos, SEEK_SET);
-}
-
-static int64_t get_dts(AVFormatContext *s, int64_t pos)
-{
-    AVIOContext *pb = s->pb;
-    int64_t dts;
-
-    ffm_seek1(s, pos);
-    avio_skip(pb, 4);
-    dts = avio_rb64(pb);
-    ff_dlog(s, "dts=%0.6f\n", dts / 1000000.0);
-    return dts;
-}
-
-static void adjust_write_index(AVFormatContext *s)
-{
-    FFMContext *ffm = s->priv_data;
-    AVIOContext *pb = s->pb;
-    int64_t pts;
-    //int64_t orig_write_index = ffm->write_index;
-    int64_t pos_min, pos_max;
-    int64_t pts_start;
-    int64_t ptr = avio_tell(pb);
-
-
-    pos_min = 0;
-    pos_max = ffm->file_size - 2 * FFM_PACKET_SIZE;
-
-    pts_start = get_dts(s, pos_min);
-
-    pts = get_dts(s, pos_max);
-
-    if (pts - 100000 > pts_start)
-        goto end;
-
-    ffm->write_index = FFM_PACKET_SIZE;
-
-    pts_start = get_dts(s, pos_min);
-
-    pts = get_dts(s, pos_max);
-
-    if (pts - 100000 <= pts_start) {
-        while (1) {
-            int64_t newpos;
-            int64_t newpts;
-
-            newpos = ((pos_max + pos_min) / (2 * FFM_PACKET_SIZE)) * FFM_PACKET_SIZE;
-
-            if (newpos == pos_min)
-                break;
-
-            newpts = get_dts(s, newpos);
-
-            if (newpts - 100000 <= pts) {
-                pos_max = newpos;
-                pts = newpts;
-            } else {
-                pos_min = newpos;
-            }
-        }
-        ffm->write_index += pos_max;
-    }
-
- end:
-    avio_seek(pb, ptr, SEEK_SET);
-}
-
-
-static int ffm_append_recommended_configuration(AVStream *st, char **conf)
-{
-    int ret;
-    size_t newsize;
-    av_assert0(conf && st);
-    if (!*conf)
-        return 0;
-    if (!st->recommended_encoder_configuration) {
-        st->recommended_encoder_configuration = *conf;
-        *conf = 0;
-        return 0;
-    }
-    newsize = strlen(*conf) + strlen(st->recommended_encoder_configuration) + 2;
-    if ((ret = av_reallocp(&st->recommended_encoder_configuration, newsize)) < 0)
-        return ret;
-    av_strlcat(st->recommended_encoder_configuration, ",", newsize);
-    av_strlcat(st->recommended_encoder_configuration, *conf, newsize);
-    av_freep(conf);
-    return 0;
-}
-
-#define VALIDATE_PARAMETER(parameter, name, check) {                              \
-    if (check) {                                                                  \
-        av_log(s, AV_LOG_ERROR, "Invalid " name " %d\n", codecpar->parameter);   \
-        ret = AVERROR_INVALIDDATA;                                                \
-        goto fail;                                                                \
-    }                                                                             \
-}
-
-static int ffm2_read_header(AVFormatContext *s)
-{
-    FFMContext *ffm = s->priv_data;
-    AVStream *st = NULL;
-    AVIOContext *pb = s->pb;
-    AVCodecContext *dummy_codec = NULL;
-    AVCodecParameters *codecpar = NULL;
-    const AVCodecDescriptor *codec_desc;
-    int ret;
-    int f_main = 0, f_cprv = -1, f_stvi = -1, f_stau = -1;
-    AVCodec *enc;
-    char *buffer;
-
-    ffm->packet_size = avio_rb32(pb);
-    if (ffm->packet_size != FFM_PACKET_SIZE) {
-        av_log(s, AV_LOG_ERROR, "Invalid packet size %d, expected size was %d\n",
-               ffm->packet_size, FFM_PACKET_SIZE);
-        ret = AVERROR_INVALIDDATA;
-        goto fail;
-    }
-
-    ffm->write_index = avio_rb64(pb);
-    /* get also filesize */
-    if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
-        ffm->file_size = avio_size(pb);
-        if (ffm->write_index && 0)
-            adjust_write_index(s);
-    } else {
-        ffm->file_size = (UINT64_C(1) << 63) - 1;
-    }
-    dummy_codec = avcodec_alloc_context3(NULL);
-
-    while(!avio_feof(pb)) {
-        unsigned id = avio_rb32(pb);
-        unsigned size = avio_rb32(pb);
-        int64_t next = avio_tell(pb) + size;
-        char rc_eq_buf[128];
-        int flags;
-
-        if(!id)
-            break;
-
-        switch(id) {
-        case MKBETAG('M', 'A', 'I', 'N'):
-            if (f_main++) {
-                ret = AVERROR(EINVAL);
-                goto fail;
-            }
-            avio_rb32(pb); /* nb_streams */
-            avio_rb32(pb); /* total bitrate */
-            break;
-        case MKBETAG('C', 'O', 'M', 'M'):
-            f_cprv = f_stvi = f_stau = 0;
-            st = avformat_new_stream(s, NULL);
-            if (!st) {
-                ret = AVERROR(ENOMEM);
-                goto fail;
-            }
-
-            avpriv_set_pts_info(st, 64, 1, 1000000);
-
-            codecpar = st->codecpar;
-            /* generic info */
-            codecpar->codec_id = avio_rb32(pb);
-            codec_desc = avcodec_descriptor_get(codecpar->codec_id);
-            if (!codec_desc) {
-                av_log(s, AV_LOG_ERROR, "Invalid codec id: %d\n", codecpar->codec_id);
-                codecpar->codec_id = AV_CODEC_ID_NONE;
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
-            }
-            codecpar->codec_type = avio_r8(pb);
-            if (codecpar->codec_type != codec_desc->type) {
-                av_log(s, AV_LOG_ERROR, "Codec type mismatch: expected %d, found %d\n",
-                       codec_desc->type, codecpar->codec_type);
-                codecpar->codec_id = AV_CODEC_ID_NONE;
-                codecpar->codec_type = AVMEDIA_TYPE_UNKNOWN;
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
-            }
-            codecpar->bit_rate = avio_rb32(pb);
-            if (codecpar->bit_rate < 0) {
-                av_log(s, AV_LOG_ERROR, "Invalid bit rate %"PRId64"\n", codecpar->bit_rate);
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
-            }
-            flags = avio_rb32(pb);
-#if FF_API_LAVF_AVCTX
-FF_DISABLE_DEPRECATION_WARNINGS
-            st->codec->flags = flags;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-            avio_rb32(pb); // flags2
-            avio_rb32(pb); // debug
-            if (flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
-                int size = avio_rb32(pb);
-                if (size < 0 || size >= FF_MAX_EXTRADATA_SIZE) {
-                    av_log(s, AV_LOG_ERROR, "Invalid extradata size %d\n", size);
-                    ret = AVERROR_INVALIDDATA;
-                    goto fail;
-                }
-                codecpar->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
-                if (!codecpar->extradata) {
-                    ret = AVERROR(ENOMEM);
-                    goto fail;
-                }
-                codecpar->extradata_size = size;
-                avio_read(pb, codecpar->extradata, size);
-            }
-            break;
-        case MKBETAG('S', 'T', 'V', 'I'):
-            if (f_stvi++ || codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
-                ret = AVERROR(EINVAL);
-                goto fail;
-            }
-            avio_rb32(pb); // time_base.num
-            avio_rb32(pb); // time_base.den
-            codecpar->width = avio_rb16(pb);
-            codecpar->height = avio_rb16(pb);
-            ret = av_image_check_size(codecpar->width, codecpar->height, 0, s);
-            if (ret < 0)
-                goto fail;
-            avio_rb16(pb); // gop_size
-            codecpar->format = avio_rb32(pb);
-            if (!av_pix_fmt_desc_get(codecpar->format)) {
-                av_log(s, AV_LOG_ERROR, "Invalid pix fmt id: %d\n", codecpar->format);
-                codecpar->format = AV_PIX_FMT_NONE;
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
-            }
-            avio_r8(pb);   // qmin
-            avio_r8(pb);   // qmax
-            avio_r8(pb);   // max_qdiff
-            avio_rb16(pb); // qcompress / 10000.0
-            avio_rb16(pb); // qblur / 10000.0
-            avio_rb32(pb); // bit_rate_tolerance
-            avio_get_str(pb, INT_MAX, rc_eq_buf, sizeof(rc_eq_buf));
-
-            avio_rb32(pb); // rc_max_rate
-            avio_rb32(pb); // rc_min_rate
-            avio_rb32(pb); // rc_buffer_size
-            avio_rb64(pb); // i_quant_factor
-            avio_rb64(pb); // b_quant_factor
-            avio_rb64(pb); // i_quant_offset
-            avio_rb64(pb); // b_quant_offset
-            avio_rb32(pb); // dct_algo
-            avio_rb32(pb); // strict_std_compliance
-            avio_rb32(pb); // max_b_frames
-            avio_rb32(pb); // mpeg_quant
-            avio_rb32(pb); // intra_dc_precision
-            avio_rb32(pb); // me_method
-            avio_rb32(pb); // mb_decision
-            avio_rb32(pb); // nsse_weight
-            avio_rb32(pb); // frame_skip_cmp
-            avio_rb64(pb); // rc_buffer_aggressivity
-            codecpar->codec_tag = avio_rb32(pb);
-            avio_r8(pb);   // thread_count
-            avio_rb32(pb); // coder_type
-            avio_rb32(pb); // me_cmp
-            avio_rb32(pb); // me_subpel_quality
-            avio_rb32(pb); // me_range
-            avio_rb32(pb); // keyint_min
-            avio_rb32(pb); // scenechange_threshold
-            avio_rb32(pb); // b_frame_strategy
-            avio_rb64(pb); // qcompress
-            avio_rb64(pb); // qblur
-            avio_rb32(pb); // max_qdiff
-            avio_rb32(pb); // refs
-            break;
-        case MKBETAG('S', 'T', 'A', 'U'):
-            if (f_stau++ || codecpar->codec_type != AVMEDIA_TYPE_AUDIO) {
-                ret = AVERROR(EINVAL);
-                goto fail;
-            }
-            codecpar->sample_rate = avio_rb32(pb);
-            VALIDATE_PARAMETER(sample_rate, "sample rate",        codecpar->sample_rate < 0)
-            codecpar->channels = avio_rl16(pb);
-            VALIDATE_PARAMETER(channels,    "number of channels", codecpar->channels < 0)
-            codecpar->frame_size = avio_rl16(pb);
-            VALIDATE_PARAMETER(frame_size,  "frame size",         codecpar->frame_size < 0)
-            break;
-        case MKBETAG('C', 'P', 'R', 'V'):
-            if (f_cprv++) {
-                ret = AVERROR(EINVAL);
-                goto fail;
-            }
-            enc = avcodec_find_encoder(codecpar->codec_id);
-            if (enc && enc->priv_data_size && enc->priv_class) {
-                buffer = av_malloc(size + 1);
-                if (!buffer) {
-                    ret = AVERROR(ENOMEM);
-                    goto fail;
-                }
-                avio_get_str(pb, size, buffer, size + 1);
-                if ((ret = ffm_append_recommended_configuration(st, &buffer)) < 0)
-                    goto fail;
-            }
-            break;
-        case MKBETAG('S', '2', 'V', 'I'):
-            if (f_stvi++ || !size || codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
-                ret = AVERROR(EINVAL);
-                goto fail;
-            }
-            buffer = av_malloc(size);
-            if (!buffer) {
-                ret = AVERROR(ENOMEM);
-                goto fail;
-            }
-            avio_get_str(pb, INT_MAX, buffer, size);
-            // The lack of AVOptions support in AVCodecParameters makes this back and forth copying needed
-            avcodec_parameters_to_context(dummy_codec, codecpar);
-            av_set_options_string(dummy_codec, buffer, "=", ",");
-            avcodec_parameters_from_context(codecpar, dummy_codec);
-            if ((ret = ffm_append_recommended_configuration(st, &buffer)) < 0)
-                goto fail;
-            break;
-        case MKBETAG('S', '2', 'A', 'U'):
-            if (f_stau++ || !size || codecpar->codec_type != AVMEDIA_TYPE_AUDIO) {
-                ret = AVERROR(EINVAL);
-                goto fail;
-            }
-            buffer = av_malloc(size);
-            if (!buffer) {
-                ret = AVERROR(ENOMEM);
-                goto fail;
-            }
-            avio_get_str(pb, INT_MAX, buffer, size);
-            // The lack of AVOptions support in AVCodecParameters makes this back and forth copying needed
-            avcodec_parameters_to_context(dummy_codec, codecpar);
-            av_set_options_string(dummy_codec, buffer, "=", ",");
-            avcodec_parameters_from_context(codecpar, dummy_codec);
-            if ((ret = ffm_append_recommended_configuration(st, &buffer)) < 0)
-                goto fail;
-            break;
-        }
-        avio_seek(pb, next, SEEK_SET);
-    }
-
-    /* get until end of block reached */
-    while ((avio_tell(pb) % ffm->packet_size) != 0 && !pb->eof_reached)
-        avio_r8(pb);
-
-    /* init packet demux */
-    ffm->packet_ptr = ffm->packet;
-    ffm->packet_end = ffm->packet;
-    ffm->frame_offset = 0;
-    ffm->dts = 0;
-    ffm->read_state = READ_HEADER;
-    ffm->first_packet = 1;
-    avcodec_free_context(&dummy_codec);
-    return 0;
- fail:
-    avcodec_free_context(&dummy_codec);
-    return ret;
-}
-
-static int ffm_read_header(AVFormatContext *s)
-{
-    FFMContext *ffm = s->priv_data;
-    AVStream *st;
-    AVIOContext *pb = s->pb;
-    AVCodecContext *dummy_codec = NULL;
-    AVCodecParameters *codecpar;
-    const AVCodecDescriptor *codec_desc;
-    int i, nb_streams, ret;
-    uint32_t tag;
-
-    /* header */
-    tag = avio_rl32(pb);
-    if (tag == MKTAG('F', 'F', 'M', '2'))
-        return ffm2_read_header(s);
-    if (tag != MKTAG('F', 'F', 'M', '1')) {
-        ret = AVERROR_INVALIDDATA;
-        goto fail;
-    }
-    ffm->packet_size = avio_rb32(pb);
-    if (ffm->packet_size != FFM_PACKET_SIZE) {
-        ret = AVERROR_INVALIDDATA;
-        goto fail;
-    }
-    ffm->write_index = avio_rb64(pb);
-    /* get also filesize */
-    if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
-        ffm->file_size = avio_size(pb);
-        if (ffm->write_index && 0)
-            adjust_write_index(s);
-    } else {
-        ffm->file_size = (UINT64_C(1) << 63) - 1;
-    }
-    dummy_codec = avcodec_alloc_context3(NULL);
-
-    nb_streams = avio_rb32(pb);
-    avio_rb32(pb); /* total bitrate */
-    /* read each stream */
-    for(i=0;i<nb_streams;i++) {
-        char rc_eq_buf[128];
-        int flags;
-
-        st = avformat_new_stream(s, NULL);
-        if (!st) {
-            ret = AVERROR(ENOMEM);
-            goto fail;
-        }
-
-        avpriv_set_pts_info(st, 64, 1, 1000000);
-
-        codecpar = st->codecpar;
-        /* generic info */
-        codecpar->codec_id = avio_rb32(pb);
-        codec_desc = avcodec_descriptor_get(codecpar->codec_id);
-        if (!codec_desc) {
-            av_log(s, AV_LOG_ERROR, "Invalid codec id: %d\n", codecpar->codec_id);
-            codecpar->codec_id = AV_CODEC_ID_NONE;
-            ret = AVERROR_INVALIDDATA;
-            goto fail;
-        }
-        codecpar->codec_type = avio_r8(pb); /* codec_type */
-        if (codecpar->codec_type != codec_desc->type) {
-            av_log(s, AV_LOG_ERROR, "Codec type mismatch: expected %d, found %d\n",
-                   codec_desc->type, codecpar->codec_type);
-            codecpar->codec_id = AV_CODEC_ID_NONE;
-            codecpar->codec_type = AVMEDIA_TYPE_UNKNOWN;
-            ret = AVERROR_INVALIDDATA;
-            goto fail;
-        }
-        codecpar->bit_rate = avio_rb32(pb);
-        if (codecpar->bit_rate < 0) {
-            av_log(s, AV_LOG_WARNING, "Invalid bit rate %"PRId64"\n", codecpar->bit_rate);
-            ret = AVERROR_INVALIDDATA;
-            goto fail;
-        }
-        flags = avio_rb32(pb);
-#if FF_API_LAVF_AVCTX
-FF_DISABLE_DEPRECATION_WARNINGS
-            st->codec->flags = flags;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-        avio_rb32(pb); // flags2
-        avio_rb32(pb); // debug
-        /* specific info */
-        switch(codecpar->codec_type) {
-        case AVMEDIA_TYPE_VIDEO:
-            avio_rb32(pb); // time_base.num
-            avio_rb32(pb); // time_base.den
-            codecpar->width = avio_rb16(pb);
-            codecpar->height = avio_rb16(pb);
-            if ((ret = av_image_check_size(codecpar->width, codecpar->height, 0, s)) < 0)
-                goto fail;
-            avio_rb16(pb); // gop_size
-            codecpar->format = avio_rb32(pb);
-            if (!av_pix_fmt_desc_get(codecpar->format)) {
-                av_log(s, AV_LOG_ERROR, "Invalid pix fmt id: %d\n", codecpar->format);
-                codecpar->format = AV_PIX_FMT_NONE;
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
-            }
-            avio_r8(pb);   // qmin
-            avio_r8(pb);   // qmax
-            avio_r8(pb);   // max_qdiff
-            avio_rb16(pb); // qcompress / 10000.0
-            avio_rb16(pb); // qblur / 10000.0
-            avio_rb32(pb); // bit_rate_tolerance
-            avio_get_str(pb, INT_MAX, rc_eq_buf, sizeof(rc_eq_buf));
-
-            avio_rb32(pb); // rc_max_rate
-            avio_rb32(pb); // rc_min_rate
-            avio_rb32(pb); // rc_buffer_size
-            avio_rb64(pb); // i_quant_factor
-            avio_rb64(pb); // b_quant_factor
-            avio_rb64(pb); // i_quant_offset
-            avio_rb64(pb); // b_quant_offset
-            avio_rb32(pb); // dct_algo
-            avio_rb32(pb); // strict_std_compliance
-            avio_rb32(pb); // max_b_frames
-            avio_rb32(pb); // mpeg_quant
-            avio_rb32(pb); // intra_dc_precision
-            avio_rb32(pb); // me_method
-            avio_rb32(pb); // mb_decision
-            avio_rb32(pb); // nsse_weight
-            avio_rb32(pb); // frame_skip_cmp
-            avio_rb64(pb); // rc_buffer_aggressivity
-            codecpar->codec_tag = avio_rb32(pb);
-            avio_r8(pb);   // thread_count
-            avio_rb32(pb); // coder_type
-            avio_rb32(pb); // me_cmp
-            avio_rb32(pb); // me_subpel_quality
-            avio_rb32(pb); // me_range
-            avio_rb32(pb); // keyint_min
-            avio_rb32(pb); // scenechange_threshold
-            avio_rb32(pb); // b_frame_strategy
-            avio_rb64(pb); // qcompress
-            avio_rb64(pb); // qblur
-            avio_rb32(pb); // max_qdiff
-            avio_rb32(pb); // refs
-            break;
-        case AVMEDIA_TYPE_AUDIO:
-            codecpar->sample_rate = avio_rb32(pb);
-            VALIDATE_PARAMETER(sample_rate, "sample rate",        codecpar->sample_rate < 0)
-            codecpar->channels = avio_rl16(pb);
-            VALIDATE_PARAMETER(channels,    "number of channels", codecpar->channels < 0)
-            codecpar->frame_size = avio_rl16(pb);
-            VALIDATE_PARAMETER(frame_size,  "frame size",         codecpar->frame_size < 0)
-            break;
-        default:
-            ret = AVERROR_INVALIDDATA;
-            goto fail;
-        }
-        if (flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
-            int size = avio_rb32(pb);
-            if (size < 0 || size >= FF_MAX_EXTRADATA_SIZE) {
-                av_log(s, AV_LOG_ERROR, "Invalid extradata size %d\n", size);
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
-            }
-            codecpar->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
-            if (!codecpar->extradata) {
-                ret = AVERROR(ENOMEM);
-                goto fail;
-            }
-            codecpar->extradata_size = size;
-            avio_read(pb, codecpar->extradata, size);
-        }
-    }
-
-    /* get until end of block reached */
-    while ((avio_tell(pb) % ffm->packet_size) != 0 && !pb->eof_reached)
-        avio_r8(pb);
-
-    /* init packet demux */
-    ffm->packet_ptr = ffm->packet;
-    ffm->packet_end = ffm->packet;
-    ffm->frame_offset = 0;
-    ffm->dts = 0;
-    ffm->read_state = READ_HEADER;
-    ffm->first_packet = 1;
-    avcodec_free_context(&dummy_codec);
-    return 0;
- fail:
-    avcodec_free_context(&dummy_codec);
-    return ret;
-}
-
-/* return < 0 if eof */
-static int ffm_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    int size;
-    FFMContext *ffm = s->priv_data;
-    int duration, ret;
-
-    switch(ffm->read_state) {
-    case READ_HEADER:
-        if ((ret = ffm_is_avail_data(s, FRAME_HEADER_SIZE+4)) < 0)
-            return ret;
-
-        ff_dlog(s, "pos=%08"PRIx64" spos=%"PRIx64", write_index=%"PRIx64" size=%"PRIx64"\n",
-               avio_tell(s->pb), s->pb->pos, ffm->write_index, ffm->file_size);
-        if (ffm_read_data(s, ffm->header, FRAME_HEADER_SIZE, 1) !=
-            FRAME_HEADER_SIZE)
-            return -1;
-        if (ffm->header[1] & FLAG_DTS)
-            if (ffm_read_data(s, ffm->header+16, 4, 1) != 4)
-                return -1;
-        ffm->read_state = READ_DATA;
-        /* fall through */
-    case READ_DATA:
-        size = AV_RB24(ffm->header + 2);
-        if ((ret = ffm_is_avail_data(s, size)) < 0)
-            return ret;
-
-        duration = AV_RB24(ffm->header + 5);
-
-        if (av_new_packet(pkt, size) < 0) {
-            return AVERROR(ENOMEM);
-        }
-        pkt->stream_index = ffm->header[0];
-        if ((unsigned)pkt->stream_index >= s->nb_streams) {
-            av_log(s, AV_LOG_ERROR, "invalid stream index %d\n", pkt->stream_index);
-            av_packet_unref(pkt);
-            ffm->read_state = READ_HEADER;
-            return -1;
-        }
-        pkt->pos = avio_tell(s->pb);
-        if (ffm->header[1] & FLAG_KEY_FRAME)
-            pkt->flags |= AV_PKT_FLAG_KEY;
-
-        ffm->read_state = READ_HEADER;
-        if (ffm_read_data(s, pkt->data, size, 0) != size) {
-            /* bad case: desynchronized packet. we cancel all the packet loading */
-            av_packet_unref(pkt);
-            return -1;
-        }
-        pkt->pts = AV_RB64(ffm->header+8);
-        if (ffm->header[1] & FLAG_DTS)
-            pkt->dts = pkt->pts - AV_RB32(ffm->header+16);
-        else
-            pkt->dts = pkt->pts;
-        pkt->duration = duration;
-        break;
-    }
-    return 0;
-}
-
-/* seek to a given time in the file. The file read pointer is
-   positioned at or before pts. XXX: the following code is quite
-   approximative */
-static int ffm_seek(AVFormatContext *s, int stream_index, int64_t wanted_pts, int flags)
-{
-    FFMContext *ffm = s->priv_data;
-    int64_t pos_min, pos_max, pos;
-    int64_t pts_min, pts_max, pts;
-    double pos1;
-
-    ff_dlog(s, "wanted_pts=%0.6f\n", wanted_pts / 1000000.0);
-    /* find the position using linear interpolation (better than
-       dichotomy in typical cases) */
-    if (ffm->write_index && ffm->write_index < ffm->file_size) {
-        if (get_dts(s, FFM_PACKET_SIZE) < wanted_pts) {
-            pos_min = FFM_PACKET_SIZE;
-            pos_max = ffm->write_index - FFM_PACKET_SIZE;
-        } else {
-            pos_min = ffm->write_index;
-            pos_max = ffm->file_size - FFM_PACKET_SIZE;
-        }
-    } else {
-        pos_min = FFM_PACKET_SIZE;
-        pos_max = ffm->file_size - FFM_PACKET_SIZE;
-    }
-    while (pos_min <= pos_max) {
-        pts_min = get_dts(s, pos_min);
-        pts_max = get_dts(s, pos_max);
-        if (pts_min > wanted_pts || pts_max <= wanted_pts) {
-            pos = pts_min > wanted_pts ? pos_min : pos_max;
-            goto found;
-        }
-        /* linear interpolation */
-        pos1 = (double)(pos_max - pos_min) * (double)(wanted_pts - pts_min) /
-            (double)(pts_max - pts_min);
-        pos = (((int64_t)pos1) / FFM_PACKET_SIZE) * FFM_PACKET_SIZE;
-        if (pos <= pos_min)
-            pos = pos_min;
-        else if (pos >= pos_max)
-            pos = pos_max;
-        pts = get_dts(s, pos);
-        /* check if we are lucky */
-        if (pts == wanted_pts) {
-            goto found;
-        } else if (pts > wanted_pts) {
-            pos_max = pos - FFM_PACKET_SIZE;
-        } else {
-            pos_min = pos + FFM_PACKET_SIZE;
-        }
-    }
-    pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
-
- found:
-    if (ffm_seek1(s, pos) < 0)
-        return -1;
-
-    /* reset read state */
-    ffm->read_state = READ_HEADER;
-    ffm->packet_ptr = ffm->packet;
-    ffm->packet_end = ffm->packet;
-    ffm->first_packet = 1;
-
-    return 0;
-}
-
-static int ffm_probe(AVProbeData *p)
-{
-    if (
-        p->buf[0] == 'F' && p->buf[1] == 'F' && p->buf[2] == 'M' &&
-        (p->buf[3] == '1' || p->buf[3] == '2'))
-        return AVPROBE_SCORE_MAX + 1;
-    return 0;
-}
-
-static const AVOption options[] = {
-    {"server_attached", NULL, offsetof(FFMContext, server_attached), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_EXPORT },
-    {"ffm_write_index", NULL, offsetof(FFMContext, write_index), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, AV_OPT_FLAG_EXPORT },
-    {"ffm_file_size", NULL, offsetof(FFMContext, file_size), AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, AV_OPT_FLAG_EXPORT },
-    { NULL },
-};
-
-static const AVClass ffm_class = {
-    .class_name = "ffm demuxer",
-    .item_name  = av_default_item_name,
-    .option     = options,
-    .version    = LIBAVUTIL_VERSION_INT,
-};
-AVInputFormat ff_ffm_demuxer = {
-    .name           = "ffm",
-    .long_name      = NULL_IF_CONFIG_SMALL("FFM (FFserver live feed)"),
-    .priv_data_size = sizeof(FFMContext),
-    .read_probe     = ffm_probe,
-    .read_header    = ffm_read_header,
-    .read_packet    = ffm_read_packet,
-    .read_seek      = ffm_seek,
-    .priv_class     = &ffm_class,
-};
diff --git a/libavformat/ffmenc.c b/libavformat/ffmenc.c
deleted file mode 100644
index ef7dc3a031..0000000000
--- a/libavformat/ffmenc.c
+++ /dev/null
@@ -1,362 +0,0 @@
-/*
- * FFM (ffserver live feed) muxer
- * Copyright (c) 2001 Fabrice Bellard
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "libavutil/intreadwrite.h"
-#include "libavutil/intfloat.h"
-#include "libavutil/avassert.h"
-#include "libavutil/parseutils.h"
-#include "libavutil/opt.h"
-#include "avformat.h"
-#include "avio_internal.h"
-#include "internal.h"
-#include "ffm.h"
-
-static void flush_packet(AVFormatContext *s)
-{
-    FFMContext *ffm = s->priv_data;
-    int fill_size, h;
-    AVIOContext *pb = s->pb;
-
-    fill_size = ffm->packet_end - ffm->packet_ptr;
-    memset(ffm->packet_ptr, 0, fill_size);
-
-    av_assert1(avio_tell(pb) % ffm->packet_size == 0);
-
-    /* put header */
-    avio_wb16(pb, PACKET_ID);
-    avio_wb16(pb, fill_size);
-    avio_wb64(pb, ffm->dts);
-    h = ffm->frame_offset;
-    if (ffm->first_packet)
-        h |= 0x8000;
-    avio_wb16(pb, h);
-    avio_write(pb, ffm->packet, ffm->packet_end - ffm->packet);
-    avio_flush(pb);
-
-    /* prepare next packet */
-    ffm->frame_offset = 0; /* no key frame */
-    ffm->packet_ptr = ffm->packet;
-    ffm->first_packet = 0;
-}
-
-/* 'first' is true if first data of a frame */
-static void ffm_write_data(AVFormatContext *s,
-                           const uint8_t *buf, int size,
-                           int64_t dts, int header)
-{
-    FFMContext *ffm = s->priv_data;
-    int len;
-
-    if (header && ffm->frame_offset == 0) {
-        ffm->frame_offset = ffm->packet_ptr - ffm->packet + FFM_HEADER_SIZE;
-        ffm->dts = dts;
-    }
-
-    /* write as many packets as needed */
-    while (size > 0) {
-        len = ffm->packet_end - ffm->packet_ptr;
-        if (len > size)
-            len = size;
-        memcpy(ffm->packet_ptr, buf, len);
-
-        ffm->packet_ptr += len;
-        buf += len;
-        size -= len;
-        if (ffm->packet_ptr >= ffm->packet_end)
-            flush_packet(s);
-    }
-}
-
-static void write_header_chunk(AVIOContext *pb, AVIOContext *dpb, unsigned id)
-{
-    uint8_t *dyn_buf;
-    int dyn_size= avio_close_dyn_buf(dpb, &dyn_buf);
-    avio_wb32(pb, id);
-    avio_wb32(pb, dyn_size);
-    avio_write(pb, dyn_buf, dyn_size);
-    av_free(dyn_buf);
-}
-
-static int ffm_write_header_codec_ctx(AVIOContext *pb, AVCodecParameters *ctxpar, unsigned tag, int type)
-{
-    AVIOContext *tmp;
-    char *buf = NULL;
-    int ret, need_coma = 0;
-    AVCodecContext *ctx = NULL;
-
-#define SKIP_DEFAULTS   AV_OPT_SERIALIZE_SKIP_DEFAULTS
-#define OPT_FLAGS_EXACT AV_OPT_SERIALIZE_OPT_FLAGS_EXACT
-#define ENC             AV_OPT_FLAG_ENCODING_PARAM
-
-    if (avio_open_dyn_buf(&tmp) < 0)
-        return AVERROR(ENOMEM);
-
-    // AVCodecParameters does not suport AVOptions, we thus must copy it over to a context that does
-    // otherwise it could be used directly and this would be much simpler
-    ctx = avcodec_alloc_context3(NULL);
-    if (!ctx) {
-        ret = AVERROR(ENOMEM);
-        goto fail;
-    }
-    avcodec_parameters_to_context(ctx, ctxpar);
-
-    if ((ret = av_opt_serialize(ctx, ENC | type, SKIP_DEFAULTS, &buf, '=', ',')) < 0)
-        goto fail;
-    if (buf && strlen(buf)) {
-        avio_write(tmp, buf, strlen(buf));
-        av_freep(&buf);
-        need_coma = 1;
-    }
-    if ((ret = av_opt_serialize(ctx, 0, SKIP_DEFAULTS | OPT_FLAGS_EXACT, &buf, '=', ',')) < 0)
-        goto fail;
-    if (buf && strlen(buf)) {
-        if (need_coma)
-            avio_w8(tmp, ',');
-        avio_write(tmp, buf, strlen(buf));
-    }
-    av_freep(&buf);
-    avio_w8(tmp, 0);
-    write_header_chunk(pb, tmp, tag);
-    avcodec_free_context(&ctx);
-    return 0;
-  fail:
-    av_free(buf);
-    ffio_free_dyn_buf(&tmp);
-    avcodec_free_context(&ctx);
-    return ret;
-
-#undef SKIP_DEFAULTS
-#undef OPT_FLAGS_EXACT
-#undef ENC
-}
-
-static int ffm_write_recommended_config(AVIOContext *pb, AVCodecParameters *codecpar, unsigned tag,
-                                        const char *configuration)
-{
-    int ret;
-    const AVCodec *enc = avcodec_find_encoder(codecpar->codec_id);
-    AVIOContext *tmp;
-    AVDictionaryEntry *t = NULL;
-    AVDictionary *all = NULL, *comm = NULL, *prv = NULL;
-    char *buf = NULL;
-
-    if (!enc || !enc->priv_class || !enc->priv_data_size) {
-        /* codec is not known/has no private options, so save everything as common options */
-        if (avio_open_dyn_buf(&tmp) < 0)
-            return AVERROR(ENOMEM);
-        avio_put_str(tmp, configuration);
-        write_header_chunk(pb, tmp, tag);
-        return 0;
-    }
-
-    if ((ret = av_dict_parse_string(&all, configuration, "=", ",", 0)) < 0)
-        return ret;
-
-    while ((t = av_dict_get(all, "", t, AV_DICT_IGNORE_SUFFIX))) {
-        if (av_opt_find((void *)&enc->priv_class, t->key, NULL, 0, AV_OPT_SEARCH_FAKE_OBJ)) {
-            if ((ret = av_dict_set(&prv, t->key, t->value, 0)) < 0)
-                goto fail;
-        } else if ((ret = av_dict_set(&comm, t->key, t->value, 0)) < 0)
-            goto fail;
-    }
-
-    if (comm) {
-        if ((ret = av_dict_get_string(comm, &buf, '=', ',')) < 0 ||
-            (ret = avio_open_dyn_buf(&tmp)) < 0)
-            goto fail;
-        avio_put_str(tmp, buf);
-        av_freep(&buf);
-        write_header_chunk(pb, tmp, tag);
-    }
-    if (prv) {
-        if ((ret = av_dict_get_string(prv, &buf, '=', ',')) < 0 ||
-            (ret = avio_open_dyn_buf(&tmp)) < 0)
-            goto fail;
-        avio_put_str(tmp, buf);
-        write_header_chunk(pb, tmp, MKBETAG('C', 'P', 'R', 'V'));
-    }
-
-  fail:
-    av_free(buf);
-    av_dict_free(&all);
-    av_dict_free(&comm);
-    av_dict_free(&prv);
-    return ret;
-}
-
-static int ffm_write_header(AVFormatContext *s)
-{
-    FFMContext *ffm = s->priv_data;
-    AVStream *st;
-    AVIOContext *pb = s->pb;
-    AVCodecParameters *codecpar;
-    int bit_rate, i, ret;
-
-    if ((ret = ff_parse_creation_time_metadata(s, &ffm->start_time, 0)) < 0)
-        return ret;
-
-    ffm->packet_size = FFM_PACKET_SIZE;
-
-    /* header */
-    avio_wl32(pb, MKTAG('F', 'F', 'M', '2'));
-    avio_wb32(pb, ffm->packet_size);
-    avio_wb64(pb, 0); /* current write position */
-
-    if(avio_open_dyn_buf(&pb) < 0)
-        return AVERROR(ENOMEM);
-
-    avio_wb32(pb, s->nb_streams);
-    bit_rate = 0;
-    for(i=0;i<s->nb_streams;i++) {
-        st = s->streams[i];
-        bit_rate += st->codecpar->bit_rate;
-    }
-    avio_wb32(pb, bit_rate);
-
-    write_header_chunk(s->pb, pb, MKBETAG('M', 'A', 'I', 'N'));
-
-    /* list of streams */
-    for(i=0;i<s->nb_streams;i++) {
-        int flags = 0;
-        st = s->streams[i];
-        avpriv_set_pts_info(st, 64, 1, 1000000);
-        if(avio_open_dyn_buf(&pb) < 0)
-            return AVERROR(ENOMEM);
-
-        codecpar = st->codecpar;
-        /* generic info */
-        avio_wb32(pb, codecpar->codec_id);
-        avio_w8(pb, codecpar->codec_type);
-        avio_wb32(pb, codecpar->bit_rate);
-        if (codecpar->extradata_size)
-            flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
-
-        // If the user is not providing us with a configuration we have to fill it in as we cannot access the encoder
-        if (!st->recommended_encoder_configuration) {
-            if (s->flags & AVFMT_FLAG_BITEXACT)
-                flags |= AV_CODEC_FLAG_BITEXACT;
-        }
-
-        avio_wb32(pb, flags);
-        avio_wb32(pb, 0); // flags2
-        avio_wb32(pb, 0); // debug
-        if (codecpar->extradata_size) {
-            avio_wb32(pb, codecpar->extradata_size);
-            avio_write(pb, codecpar->extradata, codecpar->extradata_size);
-        }
-        write_header_chunk(s->pb, pb, MKBETAG('C', 'O', 'M', 'M'));
-        /* specific info */
-        switch(codecpar->codec_type) {
-        case AVMEDIA_TYPE_VIDEO:
-            if (st->recommended_encoder_configuration) {
-                av_log(NULL, AV_LOG_DEBUG, "writing recommended configuration: %s\n",
-                       st->recommended_encoder_configuration);
-                if ((ret = ffm_write_recommended_config(s->pb, codecpar, MKBETAG('S', '2', 'V', 'I'),
-                                                        st->recommended_encoder_configuration)) < 0)
-                return ret;
-            } else if ((ret = ffm_write_header_codec_ctx(s->pb, codecpar, MKBETAG('S', '2', 'V', 'I'), AV_OPT_FLAG_VIDEO_PARAM)) < 0)
-                return ret;
-            break;
-        case AVMEDIA_TYPE_AUDIO:
-            if (st->recommended_encoder_configuration) {
-                av_log(NULL, AV_LOG_DEBUG, "writing recommended configuration: %s\n",
-                       st->recommended_encoder_configuration);
-                if ((ret = ffm_write_recommended_config(s->pb, codecpar, MKBETAG('S', '2', 'A', 'U'),
-                                                        st->recommended_encoder_configuration)) < 0)
-                return ret;
-            } else if ((ret = ffm_write_header_codec_ctx(s->pb, codecpar, MKBETAG('S', '2', 'A', 'U'), AV_OPT_FLAG_AUDIO_PARAM)) < 0)
-                return ret;
-            break;
-        default:
-            return -1;
-        }
-    }
-    pb = s->pb;
-
-    avio_wb64(pb, 0); // end of header
-
-    /* flush until end of block reached */
-    while ((avio_tell(pb) % ffm->packet_size) != 0)
-        avio_w8(pb, 0);
-
-    avio_flush(pb);
-
-    /* init packet mux */
-    ffm->packet_ptr = ffm->packet;
-    ffm->packet_end = ffm->packet + ffm->packet_size - FFM_HEADER_SIZE;
-    av_assert0(ffm->packet_end >= ffm->packet);
-    ffm->frame_offset = 0;
-    ffm->dts = 0;
-    ffm->first_packet = 1;
-
-    return 0;
-}
-
-static int ffm_write_packet(AVFormatContext *s, AVPacket *pkt)
-{
-    FFMContext *ffm = s->priv_data;
-    int64_t dts;
-    uint8_t header[FRAME_HEADER_SIZE+4];
-    int header_size = FRAME_HEADER_SIZE;
-
-    dts = ffm->start_time + pkt->dts;
-    /* packet size & key_frame */
-    header[0] = pkt->stream_index;
-    header[1] = 0;
-    if (pkt->flags & AV_PKT_FLAG_KEY)
-        header[1] |= FLAG_KEY_FRAME;
-    AV_WB24(header+2, pkt->size);
-    AV_WB24(header+5, pkt->duration);
-    AV_WB64(header+8, ffm->start_time + pkt->pts);
-    if (pkt->pts != pkt->dts) {
-        header[1] |= FLAG_DTS;
-        AV_WB32(header+16, pkt->pts - pkt->dts);
-        header_size += 4;
-    }
-    ffm_write_data(s, header, header_size, dts, 1);
-    ffm_write_data(s, pkt->data, pkt->size, dts, 0);
-
-    return 0;
-}
-
-static int ffm_write_trailer(AVFormatContext *s)
-{
-    FFMContext *ffm = s->priv_data;
-
-    /* flush packets */
-    if (ffm->packet_ptr > ffm->packet)
-        flush_packet(s);
-
-    return 0;
-}
-
-AVOutputFormat ff_ffm_muxer = {
-    .name              = "ffm",
-    .long_name         = NULL_IF_CONFIG_SMALL("FFM (FFserver live feed)"),
-    .extensions        = "ffm",
-    .priv_data_size    = sizeof(FFMContext),
-    .audio_codec       = AV_CODEC_ID_MP2,
-    .video_codec       = AV_CODEC_ID_MPEG1VIDEO,
-    .write_header      = ffm_write_header,
-    .write_packet      = ffm_write_packet,
-    .write_trailer     = ffm_write_trailer,
-    .flags             = AVFMT_TS_NEGATIVE,
-};