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I'm curious about their DXV codec, but the info provided isn't that detailed. Also while ffmpeg has a decoder for it, the encoder is not open sourced.

Is there a VJing codec that does something like a mipmap for multiple resolutions? For example so you could easily switch from a 2x2 grid of 4K videos to a 200x200 grid of video tiles, without fully decoding 4K for each (more like reads from a 240p stream or smaller).



Take a look at https://hap.video/ which is open source, serves a similar use case, and I believe uses a lot of the same techniques as DXV.




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