From 4b150fbe1f3905f8245f63d74ff72f2ef92d9717 Mon Sep 17 00:00:00 2001 From: Rodger Combs Date: Sun, 6 Mar 2016 20:48:57 -0600 Subject: lavf/segment: add option to write empty filler segments as needed --- libavformat/segment.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'libavformat/segment.c') diff --git a/libavformat/segment.c b/libavformat/segment.c index d6473f4675..9527c87667 100644 --- a/libavformat/segment.c +++ b/libavformat/segment.c @@ -118,6 +118,7 @@ typedef struct SegmentContext { char *reference_stream_specifier; ///< reference stream specifier int reference_stream_index; int break_non_keyframes; + int write_empty; int use_rename; char temp_list_filename[1024]; @@ -810,6 +811,7 @@ static int seg_write_packet(AVFormatContext *s, AVPacket *pkt) if (!seg->avf) return AVERROR(EINVAL); +calc_times: if (seg->times) { end_pts = seg->segment_count < seg->nb_times ? seg->times[seg->segment_count] : INT64_MAX; @@ -841,7 +843,7 @@ static int seg_write_packet(AVFormatContext *s, AVPacket *pkt) if (pkt->stream_index == seg->reference_stream_index && (pkt->flags & AV_PKT_FLAG_KEY || seg->break_non_keyframes) && - seg->segment_frame_count > 0 && + (seg->segment_frame_count > 0 || seg->write_empty) && (seg->cut_pending || seg->frame_count >= start_frame || (pkt->pts != AV_NOPTS_VALUE && av_compare_ts(pkt->pts, st->time_base, @@ -861,6 +863,9 @@ static int seg_write_packet(AVFormatContext *s, AVPacket *pkt) seg->cur_entry.start_time = (double)pkt->pts * av_q2d(st->time_base); seg->cur_entry.start_pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q); seg->cur_entry.end_time = seg->cur_entry.start_time; + + if (seg->times || (!seg->frames && !seg->use_clocktime) && seg->write_empty) + goto calc_times; } if (pkt->stream_index == seg->reference_stream_index) { @@ -1010,6 +1015,7 @@ static const AVOption options[] = { { "write_header_trailer", "write a header to the first segment and a trailer to the last one", OFFSET(write_header_trailer), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, E }, { "reset_timestamps", "reset timestamps at the begin of each segment", OFFSET(reset_timestamps), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E }, { "initial_offset", "set initial timestamp offset", OFFSET(initial_offset), AV_OPT_TYPE_DURATION, {.i64 = 0}, -INT64_MAX, INT64_MAX, E }, + { "write_empty_segments", "allow writing empty 'filler' segments", OFFSET(write_empty), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E }, { NULL }, }; -- cgit v1.2.3