I’m unable to find any verified or clear information about something called “pppe264.” It doesn’t correspond to any known standard, technology, codec, protocol, product, or research term I can identify.
If you meant something else, could you please double-check the spelling or provide more context (e.g., field like video encoding, materials science, finance, biology, or a typo for something like H.264, PPP, PPE, etc.)? That way I can put together a useful guide for you. pppe264