Media convert - Pixel format: converting a video in yuv444p to yuv420p

Question

I'd like to find a way, using AWS media convert to mimic this ffmpeg command for videos originally using 4:4:4 chroma subsampling:

ffmpeg -i input.mp4 -vf format=yuv420p output.mp4

Any idea if that is a possibility?

Roman Chekmazov · Answer

Please check supported input formats here: https://docs.aws.amazon.com/mediaconvert/latest/ug/supported-containers-codecs-details.html

as well as supported color spaces schemes: https://docs.aws.amazon.com/mediaconvert/latest/ug/converting-the-color-space.html

robc_amzn · Answer

Hey!   Sorry the answer 'bot got it wrong.

YUV444 inputs ARE supported by MediaConvert, 
 but only in certain container+codec combinations.

For yuv4:4:4 input, try using a MXF or  IMF or MOV container,  with Apple ProRes 4444 or Apple ProRes 4444XQ  codecs.  I've tested this, and it works for 4:4:4 -->4:2:2 or 4:2:0.

You can definitely lodge a Feature Request for more container/codec combinations (see the Feedback button in lower left of AWS Console).

Anat · Answer

However, I have one additional error. When launching the job, I get this error : Unsupported video input: [stream color format not supported] for 352669a0dfc7a7-4870-457f-934d-8dba8db78137.mp4

Media convert - Pixel format: converting a video in yuv444p to yuv420p

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