I’d like to convert a movie to a lossy JPEG 2000 sequence with FFmpeg using libopenjpeg. I found -compression_level to control the compression but I‘m looking for a kind of variable bitrate control like -crf. Is this possible?
How to create a lossy JPEG 2000 sequence with FFmpeg
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I don't think J2K has any quality controls like that. CRF is not an FFmpeg thing, the actual encoders need to support it. libx264 or libx265 have it, but I don't know any image encoders that work like that.