Screen Recording vs Downloading YouTube for Editing
A screen recording of YouTube adds a second compression pass and often a variable frame rate; a download is the stream itself. Quality, sync and time.
A screen recording of YouTube adds a second compression pass and often a variable frame rate; a download is the stream itself. Quality, sync and time.
B-ROLL shows the real bitrate and resolution of every YouTube download, measured on the finished file, so you can judge a shot before you cut with it.
DNxHR LB, SQ and HQ are 8-bit tiers, HQX is 10-bit at the HQ data rate. Avid's rates at 1080p 29.97 in MB/s and Mbps, and the tier a YouTube source needs.
ProRes 422 HQ at 1080p 29.97 fps takes 1.65 GB per minute, DNxHR HQ 1.56 GB. Full tier table for 1080p and 4K from Apple and Avid data rates.
ProRes Proxy, LT, 422 and 422 HQ compared: Apple's data rates (45 to 220 Mbps at 1080p 29.97), what each tier is for, and which a YouTube clip needs.
YouTube asks for 8 Mbps at 1080p30 uploads, then streams its own re-encode. How stream bitrate compares with the upload and how to check a downloaded file.
YouTube serves 1080p and 4K as separate video and audio streams that ffmpeg must merge. Why downloads stop at 360p or 720p, and the fixes in order.
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