It’s not Rust, therefore it’s bad. Or something. This is getting rather tedious.

I think they mean that video decoders and encoders tend to have custom assembly code for speedup.

That codecs should be written in safer languages given that they usually process untrusted files. There have been a number of serious hacks from file parsing bugs due to them being written in unsafe languages.

There's literally a DSL designed for this purpose (Wuffs) so it would be interesting to hear why they didn't use it.

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