diff options
Diffstat (limited to 'libavformat/m4vdec.c')
| -rw-r--r-- | libavformat/m4vdec.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/libavformat/m4vdec.c b/libavformat/m4vdec.c index 4a0af3c037..d8ee530010 100644 --- a/libavformat/m4vdec.c +++ b/libavformat/m4vdec.c @@ -2,20 +2,20 @@ * RAW MPEG-4 video demuxer * Copyright (c) 2006 Thijs Vermeir <thijs.vermeir@barco.com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -33,16 +33,18 @@ static int mpeg4video_probe(AVProbeData *probe_packet) for (i = 0; i < probe_packet->buf_size; i++) { temp_buffer = (temp_buffer << 8) + probe_packet->buf[i]; - if ((temp_buffer & 0xffffff00) != 0x100) + if (temp_buffer & 0xfffffe00) + continue; + if (temp_buffer < 2) continue; if (temp_buffer == VOP_START_CODE) VOP++; else if (temp_buffer == VISUAL_OBJECT_START_CODE) VISO++; - else if (temp_buffer < 0x120) + else if (temp_buffer >= 0x100 && temp_buffer < 0x120) VO++; - else if (temp_buffer < 0x130) + else if (temp_buffer >= 0x120 && temp_buffer < 0x130) VOL++; else if (!(0x1AF < temp_buffer && temp_buffer < 0x1B7) && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) @@ -50,9 +52,9 @@ static int mpeg4video_probe(AVProbeData *probe_packet) } if (VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res == 0) - return AVPROBE_SCORE_EXTENSION; + return VOP+VO > 4 ? AVPROBE_SCORE_EXTENSION : AVPROBE_SCORE_EXTENSION/2; return 0; } -FF_DEF_RAWVIDEO_DEMUXER(m4v, "raw MPEG-4 video", mpeg4video_probe, "m4v", - AV_CODEC_ID_MPEG4) +FF_DEF_RAWVIDEO_DEMUXER2(m4v, "raw MPEG-4 video", mpeg4video_probe, "m4v", + AV_CODEC_ID_MPEG4, AVFMT_GENERIC_INDEX | AVFMT_TS_DISCONT) |