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I could see that the audio couldn't be placed in a 5.1 track, but in 6 individual mono tracks I just ran a quick test on my machine, and while a 6 channel mxf does import by default into Premiere with 6 mono tracks, if you right-click and run modify > audio channels on the imported clip, you can can change the clip channel format to 5.1 and the number of ...


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CABAC will give a small compression but increases the encoding time a bit.


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Use ffmpeg -i input.mkv -map_metadata 0 -map 0 -c copy -c:a:0 ac3 -vbr 3 output.mkv See https://superuser.com/a/1219824 for an illustrated guide to how stream options are parsed.


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Couldn't you just offload some of the software encoding tasks to CUDA or OpenCL to speed them up? No. Video encoding is very difficult to parallelize. And even in software adding threads has a quality impact. GPUs run small, simple programs. Their speed comes from being able to run thousands of copies of these small programs at the same time. All forms ...


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In my experience (using handbrake) increasing the bit depth increases the file size but not by much. However, lowering the CRF is what causes significantly larger files. I encoded several times the same source with different settings to see what I'd get, so for a random source of 1.45Gb (H.264/AVC) it gave theses results: H.265 8bit CRF 22 (slow) > 362.6 Mb ...


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