[FFmpeg-trac] #6406(undetermined:new): Framerate issues with HVEC and mkv container
FFmpeg
trac at avcodec.org
Sat May 20 10:37:35 EEST 2017
#6406: Framerate issues with HVEC and mkv container
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Reporter: aLPHa_NRG | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
Similar to ticket: https://trac.ffmpeg.org/ticket/259
The issue is that FFMPEG does not detect the right framerate. My mkv file
is 4k and i want to downscale the video to 1920 x1080 full HD. FFMPEG
detects the framerate as 29.98 while this needs to be 29.986.
I have been looking at the source but I cant seem to figure out where the
framerate detection is. To me it means your floats are capped to 2
decimals or something or the framerate is not detected properly with x265
lib I dunno...
How to reproduce:
% ffmpeg -i input.mkv
Stream #0.0: Video: vc1 (Advanced), yuv420p, 3840x2160 [PAR 1:1 DAR 16:9],
29.98 fps, 29.98 tbr, 1k tbn, 29.98 tbc (default)
ffmpeg version: tried two versions both gave the same error. latest from
ubuntu 16.04 (yesterday) and pulled latest source through git yesterday
and compiled it)
built on:
Ubuntu 16.04
I wil update the ticket monday with more info
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Ticket URL: <https://trac.ffmpeg.org/ticket/6406>
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