#259: framerate detection does not work properly. (mkv with default duration !=
actual average duration)
-------------------------------------+-------------------------------------
Reporter: mbosner | Owner:
Type: defect | Status: open
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: vc1 | Resolution:
pulldown mkv fps | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 1 |
-------------------------------------+-------------------------------------
Comment (by michael):
Replying to [comment:10 gjdfgh]:
> This happens all the time. The most fun issue I've hit was when the
framerate stored in the file was based on a frame duration... rounded to
milliseconds. mkvinfo said "Default duration: 42.000ms (23.810
frames/fields per second for a video track)". Even thouhg the file was
actually 23.976, and there were frames with 41 ms duration. (Keep in mind
that Matroska rounds timestamps to milliseconds.)
>
> But IMO libavformat shouldn't try to guess this. This belongs into a
layer somewhere above the decoder. And it would need to be adaptive: what
do you do about VFR files?
so what do you suggest ?
just closing this ticket ? (ATM lavf doesnt really guess it trusts the
default duration)
and timestamps should be "correct" so a layer above should be fine as long
as it doesnt trust the fps
--
Ticket URL: <https://trac.ffmpeg.org/ticket/259#comment:11>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
_______________________________________________
FFmpeg-trac mailing list
FFmpeg-trac@avcodec.org
http://avcodec.org/mailman/listinfo/ffmpeg-trac
