[FFmpeg-user] -pix_fmt + pixel format conversions

[Michael Koch]

Am 29.07.2021 um 09:12 schrieb Green Koopa:
> My input file is yuvj420p(pc, bt709). My target output is
> yuv420p(tv, bt709). I would like to use "-pix_fmt +yuv420p"
> to specify the output format, and to force me to be explicit
> in my conversions in the filtergraph. How do I achieve
> explicit conversions? The format filter appears to trigger
> implicit conversions.
>
> "crop=2704:1520:0:0,format=yuv420p,eq=saturation=1.2"
> causes error
> The filters 'Parsed_crop_0' and 'Parsed_format_1' do not have
> a common format and automatic conversion is disabled.
>
> If I go back to relying on implicit conversions, how do I
> output these automatically added filters?

Add "-v verbose" to your command line and then search for the green 
lines in the console listing.

Michael