Repella Fella
You can use ffmpeg to extract the vorbis audio tracks from the webm videos then make hdiffz patches to convert the oggs back into videos (note that the hdiff patches will be huge since they make up the entire video track).
Only issue is that oggre is buggy af with these oggs, so it may just be easier to use:
srep+lzma2 on the webm
precomps+srep+lolz on everything else.
Precomps = precomp stdin/stdio fork by Nicolas Comerci.
8GB > 7.2GB
I spent all day trying to get oggre working, but it will crash without much of a pattern to go off.
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