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> You downgraded the video to half the size, then blew it back up again No, that's not what that command does. It performs a single rescaling that resizes the
by teraflop 1y ago
> You downgraded the video to half the size, then blew it back up again
No, that's not what that command does. It performs a single rescaling that resizes the video dimensions to the next lower multiple of 2. e.g. it will resize an 801x601 pixel video to 800x600.
If the video size is already an even number of pixels, it's a no-op and doesn't lose any detail.
If the video size isn't already even, then the rescaling is necessary because H.264 doesn't support odd dimensions.
> No idea what -level 3.0 is as it’s not in the docs anywhere (hallucination?).
It's documented here: https://ffmpeg.org/ffmpeg-codecs.html#Options-40 https://ffmpeg.org/ffmpeg-codecs.html#Options-40