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This mostly looks like they're adding support for new codecs, there's only 4 new options in there, which seems rather paltry for a dot zero version release. Should we consider ffmpeg feature complete?

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Dot zero releases basically signify major bumps of the core libs, and are not really synced with user-facing feature changes.

I am still using 4.2. Does it make any difference if all I care about is h264 and hevc?

More modern x264/x265 I guess

At a prior job we pinned to 4.2.3 because after that version an internal change massively impacted high frame rates. With a 1080p mp4 file on disk, and that disc being an ssd, version 4.2.3 delivers 700-800 frames per second, while all the versions after that 4.2.3 release - no other app or library changes - that same file may reach 300 fps. I spent some time trying to find the cause of that 50% cut in efficiency, but never found enough time.

Curious to try this version.

> I spent some time trying to find the cause of that 50% cut in efficiency

Presumably they have an issue tracker. Did you report this?

When I looked, it had been reported already.

do you have a link?

You are referring to (re)encoding a file?

Just playback.

Why would you play back at 10x?

When training an algorithm using video, seek the minimal overhead because you're going to be decompressing several billion frames.

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