RepoMirrors/mpv
1
0
Fork 0
mirror of https://github.com/mpv-player/mpv synced 2025-03-20 10:17:31 +00:00
Code Issues Releases Wiki Activity

demux_lavf: disable support for byte-based seeking

Browse Source 
libavformat returns nonsense per-stream bitrate values for some MPEG
files (0 or many times higher than the overall bitrate of the file),
which triggered the heuristic to enable byte-based seeking in
demux_lavf and then made the byte-based seeks wildly inaccurate.
Disable the support for byte-based seeks. This will avoid problems
with files that have consistent timestamps, but on the other hand will
completely break seeking in MPEG files that have timestamp resets.
I'll probably add at least an option to manually enable byte-based
seeking later.
This commit is contained in:
Uoti Urpala 2011-04-08 02:47:02 +03:00
parent d4b5ee2cd5
commit 511498818f
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libmpdemux/demux_lavf.c
View File

@ -615,6 +615,9 @@ static demuxer_t* demux_open_lavf(demuxer_t *demuxer){
demuxer->video->id=-2; // audio-only
} //else if (best_video > 0 && demuxer->video->id == -1) demuxer->video->id = best_video;
// disabled because unreliable per-stream bitrate values returned
// by libavformat trigger this heuristic incorrectly and break things
#if 0
/* libavformat sets bitrate for mpeg based on pts at start and end
* of file, which fails for files with pts resets. So calculate our
* own bitrate estimate. */
@ -630,6 +633,7 @@ static demuxer_t* demux_open_lavf(demuxer_t *demuxer){
if (!priv->bitrate)
priv->bitrate = 1440000;
}
#endif
demuxer->accurate_seek = !priv->seek_by_bytes;
return demuxer;