[FFmpeg-user] Error reading 10bit H264 in Matroska

Moritz Barsnick barsnick at gmx.net
Wed Jul 15 22:48:29 CEST 2015

On Wed, Jul 15, 2015 at 16:10:17 -0400, Leo Izen wrote:
> I've put the 20 MB file here:
> https://dl.dropboxusercontent.com/u/51080973/h264_pixfmt_matroska.mkv

> This is unsurprisng given than it's an HD (Bluray quality) file and 10
> MB isn't enough to seek. What this does suggest is that ffplay is
> somehow looking ahead into the second ten megabytes in order to
> determine the file parameters and FFplay isn't.

To confim your assumption: Running ffmpeg and ffprobe with
"-analyzeduration 20M -probesize 20M" does seem to work:

  Duration: 00:01:30.05, start: 0.000000, bitrate: 1819 kb/s
    Stream #0:0(jpn): Video: h264 (High 10), yuv420p10le(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)

I get a read error after 5 seconds, probably because that's the length
you truncated the video to.


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