[FFmpeg-user] Question about handling / unwanted changes of SAR in ffmpeg

[Carl Eugen Hoyos]

2018-12-27 22:25 GMT+01:00, Uwe Freese <uwe.freese at gmx.de>:
> Hello,
>>> Instead, the better solution would then be to give the SAR to whatever
>>> calculates the SAR to store at container level not as a double or int,
>>> but as a "AVRational", which contains the "num" and "den" values (in
>>> this case 64 and 45)?
>> This is exactly what FFmpeg does (since forever).
>
> Good. But then I totally don't understand why that 64:45 is not used
> and stored at mkv container level as well.

Because matroska files do not store SAR.

Carl Eugen