[Dylan16807]

> Like what ? Lossy compression has nothing to offer since about 10 years ago.

h.266 is about 1/3 smaller than AV1, so it fits about 50% more video per megabyte at the same quality. AV2 will almost certainly be better than h.266

> Is there a flac for video ?

ProRes is a close equivalent.

> Is there a codec able to "guarantee" DVD quality on today's internet ? Those "up to" really sound like "up your's".

Basically no. You won't find a video distribution codec that guarantees any level of quality because they're all configurable. And youtube in particular is always tweaking the quality dial as low as they can. But if you can get a bitrate that would be passable with h.264, then AV1 will look good and AV2 will look great at the same bitrate.

And they can all beat a DVD with a fraction of the bitrate. You just have to not get greedy.