ffmpeg | branch: release/2.3 | Michael Niedermayer <michae...@gmx.at> | Sun Sep 7 16:39:39 2014 +0200| [6359be67517faf76654b64e9fcb5a160f19917bd] | committer: Michael Niedermayer
avformat/m4vdec: Check for non startcode 00 00 00 sequences in probe Fixes miss detection of PCM as m4v Fixes Ticket 3928 Signed-off-by: Michael Niedermayer <michae...@gmx.at> (cherry picked from commit 7c1835c52a4be2e4e996f83c91a8d5a147b01100) Signed-off-by: Michael Niedermayer <michae...@gmx.at> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6359be67517faf76654b64e9fcb5a160f19917bd --- libavformat/m4vdec.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/libavformat/m4vdec.c b/libavformat/m4vdec.c index ead0066..80bd75e5 100644 --- a/libavformat/m4vdec.c +++ b/libavformat/m4vdec.c @@ -33,13 +33,15 @@ 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) VO++; - else if (temp_buffer < 0x130) VOL++; + else if (temp_buffer >= 0x100 && temp_buffer < 0x120) VO++; + else if (temp_buffer >= 0x120 && temp_buffer < 0x130) VOL++; else if ( !(0x1AF < temp_buffer && temp_buffer < 0x1B7) && !(0x1B9 < temp_buffer && temp_buffer < 0x1C4)) res++; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
