compression: why change the Display aspect ratio?

[iacoposk8]

hello to everyone! I wrote this command to compress a video:

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avidemux2_cli --load 0.MPG --audio-codec copy --video-codec x264 --video-conf 2pass=200 --output-format MP4 --save compress/0.MPG
compression works, the problem is that the Display aspect ratio is changed from 16:9 to 0944
how can I fix?

[zakk]

use .mkv and click configuration button (bottom left).

[iacoposk8]

but I would like to create a bash script because I want to compress the video are many

[zakk]

Use mkv as container and find the command to change the display width.