[FFmpeg-user] h264_vaapi missing frames

Gyan Doshi gyandoshi at gmail.com
Fri Mar 23 15:31:33 EET 2018

On 3/23/2018 6:45 PM, Carl Eugen Hoyos wrote:
> 2018-03-23 14:12 GMT+01:00, Mark Thompson <sw at jkqxz.net>:

>> This is still duplicating a very large number of frames for video sync.  As
>> suggested previously, please try with video sync disabled ("-vsync 0") or
>> without audio.
> To the best of my knowledge, this would produce an invalid output file:
> The input is not cfr, FFmpeg's mov output does not support vfr.

How are you assessing validity, or what would be needed to make the 
output valid? Is there a particular conformance tool or some part of the 
QT or MPEG-4 specs that you have in mind?


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