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Extracting frames from a video with ffmpeg very slow if not using jpeg
(discuss.tchncs.de)
I guess you could check the size of the lossless and lossy frames it outputs, to convert the fps to Mbps. If both values are similar then it's probably the drive
I just did a rough calculation where I did estimated size of png / estimated size of jpg * fps of png
and the value was roughly in the ballpark of what the fps for jpg were, so I'm very sure it's the drive
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