cutting with ffmpeg, video got wrong colors and pixaleted frames

after cutting and Concatenate with ffmpeg i- example.mp4 -ss 01:02 -to 03:01 -vcodec copy -acodec copy output.mp4, it looks like the video changed resolution at some time and got wrong colors and pixaleted frames, source file was deleted, is it possible to repair it extracting the raw data?

I tried to use the -vf scale filter of ffmpeg to see if it gets other results, but stills the same.

using ffmpeg -fflags +igndts i got “Non-monotonous DTS in output stream 0:1; previous: 399777, current: 399767; changing to 399778. This may
result in incorrect timestamps in the output file.”

image with the result

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