[FFmpeg-user] MXF XAVC UHD video stream modified while using the -copy option

[Carl Eugen Hoyos]

2018-02-06 18:09 GMT+01:00 Ronan Ricou <r.ricou at b-architech.com>:

> I'm trying to remux a MXF XAVC file with the exact same video but
> only 2 out of the 4 audio tracks.
> For that I use this command:
> ffmpeg -i INPUT_FILE -c copy -map 0:v -map 0:a:0 -map 0:a:1 OUTPUT_FILE
>
> The thing is, some video data are lost during the remux as my file
> is smaller than it should be.

How do you know this?

Please test current FFmpeg git head and provide the command line
you tested together with the complete, uncut console output.

Carl Eugen