Use byte seeking when time to seek is given in percentage

[GoogleCodeExporter]

The default seeking method in ffmpegthumbnailer-2.0.6 (linked against 
ffmpeg-0.6) is always failing with my MPEG2-TS files and the first frame is 
used instead:

> ffmpegthumbnailer -t 30 -i video.ts -o thumb.jpg
[mpeg2video @ 0x822d8f0]mpeg_decode_postinit() failure
[mpegts @ 0x82292a0]max_analyze_duration reached
[NULL @ 0x822e890]start time is not set in av_estimate_timings_from_pts
[NULL @ 0x822f060]start time is not set in av_estimate_timings_from_pts
Seeking in video failed, will use first frame
[mpeg2video @ 0x822d8f0]mpeg_decode_postinit() failure
[mpegts @ 0x8229250]max_analyze_duration reached
[NULL @ 0x822cc70]start time is not set in av_estimate_timings_from_pts
[NULL @ 0x822f250]start time is not set in av_estimate_timings_from_pts

However, thumbnailing works nicely if seeking is done directly with byte 
offsets (AVSEEK_FLAG_BYTE) as implemented in the attached patch.

Original issue reported on code.google.com by [email protected] on 10 Jan 2011 at 12:05

Attachments:

• ffmpegthumbnailer-2.0.6-byteseeking.patch

[sarnobat]

Has this been integrated into the main release, or do we still need the patch? I experience this issue on verson 2.0.7

[dirkvdb]

I tried the patch but I see issues on other file formats. It needs some more investigation.