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You would use FFmpeg for that. It requires that you are a bit familiar with using command line applications but even if you are not its really not complicated. The things you want to do have been covered in these questions (and probably others): Why does quality degrade so much if just cutting video with ffmpeg? (different topic but the answer tells you ...


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MPEG-2 works by compressing in two different ways. Within a frame, it looks at groups of pixels (blocks) and compresses them based on patterns it finds within them. This is kind of similar to how JPEG compression work. the Macroblock quantization level describes how loosely the encoded block can represent the original block. The lower the number, the ...


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After some deep Googling, I did find explanations for a few of these options: MPEG macroblock quantization level. Valid values are from 2 to 31. Low values of this variable mean higher quality and higher bitrate, so 2 is the highest quality and 31 is the lowest quality. VBV buffer size in units of 16k bits. The meaning of this parameter is ...


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Well going by the numbers h264 has a lesser bit-depth and color accuracy than ProRes 422. PR422 has 10bit and 4:2:2 chroma sub-sampling, h264 has 8bit and 4:2:0 unless you encode in the Hi422P Intra profile which isn't very well supported in the wild but offers 10bit and 4:2:2. So in that case I don't think you will have any difference what so ever between ...



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