Carl Eugen Hoyos <[email protected]> added the comment:

I'll try again:
If you don't use -map 0, there is no guarantee that FFmpeg uses the first video
stream (it is perfectly ok to use any of several video - or audio - streams if
you do not explicitly specify one) and from the perspective of the second stream
(that is 720x480), it is perfectly ok not to accept crop=0:0:1920:1080.
Since you somehow manage to remove the "Stream mapping:" part of the output (or
it wasn't printed for some unknown reason), you have to specify -map 0 to make
this a bug.

(Note that a very similar bug exists for audio if you have streams with
different channel count.)

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FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/issue2156>
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