Can anyone help me convert some video files to a modified MJPEG or AMV?

[Guernsey]

Can anyone help with converting the video files I have to this type of MP3 player? It is an MP3 player from TIMMY that I bought on Amazon in 2018 and I am having a problem converting videos to that player. According to player itself, it only supports MJPEG video files with the video size being 160 x 128. It seems simple at first until further research made me realize that it requires a modified version of this MJPEG file (or AMV for similar players). I am not sure if the free video converters I have support this format yet alone can convert to this format. Can anyone help me with this conundrum?

[jagabo]

It looks like ffmpeg can create such files: https://superuser.com/questions/1649146/convert-mpeg4-to-amv-via-ffmpeg

[Guernsey]

Looks like it worked although I did get this error in FFMPEG, "deprecated pixel format used, make sure you did set range correctly". I also got a "Format Error" in my MP3 player when the video ended but it worked and I could watch the video. I also learned that Eusing can convert to the AMV format provided that I have FFMPEG.