CODEWITHSUNDEEP
encodingffmpegmonochrome
user3482407
user3482407

Reputation: 319

ffmpeg monochrome rawvideo

I am trying to generate a raw video stream with luma only (monochrome, YUV400) 8bit pixel data using the following command:

ffmpeg -i input.mp4 -vcodec rawvideo -pix_fmt raw.yuv

After that I want to h.264 encode the raw stream with the profiles that support monochrome pixel data (eg: high)

ffmpeg -f rawvideo -vcodec rawvideo -pix_fmt gray -s 640x512 -r 60 -i raw.yuv -codec:v libx264 -profile:v high -c:a copy out.mp4

However, i always get the following error, which indicates that the raw stream is not in the monochrome format that I expected:

x264 [error]: high profile doesn't support 4:4:4

I am new to ffmpeg and video formats in general. Can somebody please point out what I am missing?

Thank you!

Edit: I also tried to use the following filter to extract only the luma channel. Unfortunately, the end result was the same.

ffmpeg -i input.mp4 -vcodec rawvideo -pix_fmt gray -filter_complex 'extractplanes=y[y]' -map '[y]' raw.yuv

Upvotes: 2

Views: 1537

Answers (1)

user3482407
user3482407

Reputation: 319

The ffmpeg version installed was quite old (3.4.7). After installing 4.2.3 everything worked fine.

Upvotes: 0

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