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3

All that matters is if the MP4 looks good to you. Of course, you may be able to compress more. There is no set bitrate to use. More complex or rapidly changing visuals require greater bitrate. Most converters use x264 to generate the converted video stream, and x264 offers a CRF mode which adjusts the bitrate based on the visual content complexity. If your ...


0

Advanced Authoring Format (AAF) and some MXF operational patterns (OP-2a, 2b, 3a, and 3b) should be able mix bit rates. I say "should" because I don't have any good way of testing right now and I don't know of any commercial systems that are making heavy use of those MXF OP's.


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Well I can't say I know how it would be done; but RED (www.red.com), their R3D video format uses a debayer process. I own a RED Epic. It shoots at up to 5K 100 FPS. When out in the field, and wanting to view the video on say a laptop, the throughput of uncompressed (or near) say 3:1 5K is huge. So RED uses a debayer process; where the pixels are ...


4

If the only difference is bitrate, then any container which accepts variable bitrate streams, will fulfill your requirement e.g. MP4, MKV..etc Step 1 is to encode your segments, ideally using the same encoder, to different bitrates with all other parameters being the same e.g. via ffmpeg, ffmpeg -ss 0 -t 5 -i input.mp4 -b:v 1000k seg1.mp4 ffmpeg -ss 5 -t ...


0

Assuming your editor can rotate videos, use ffmpeg -i "recording6.mp4" -vf "transpose=1" -vcodec dnxhd -r 60 -b:v 36M "recording6.mov" This will rotate the video, so the 1080x1920 video becomes 1920x1080.



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