3 ms·
What frequency limit do you see? Opus is transparent at that rate. Heck it's virtually transparent at 96 kbps, and does a great job at 64 kbps.
by clarry 7y ago
What frequency limit do you see?
Opus is transparent at that rate. Heck it's virtually transparent at 96 kbps, and does a great job at 64 kbps.
- bscphil 7y agoThey're probably getting mp3 streams I would imagine. Definitely not transparent at 128 kbps. I'm not sure who Youtube streams Opus to, I should look into that.
- Iv 7y agoOn a random electro-swing video I get the following choices in youtube-dl: audio only DASH audio 53k , opus @ 50k, 1.01MiB audio only DASH audio 69k , opus @ 70k, 1.34MiB audio only DASH audio 130k , m4a_dash container, mp4a.40.2@128k, 2.63MiB audio only DASH audio 136k , vorbis@128k, 2.59MiB audio only DASH audio 140k , opus @160k, 2.69MiB Seems pretty decent to me.
- bscphil 7y agoYes, I'm actually quite impressed that they offer opus @160k. The real issue with Youtube is that you never know what the source was. If they're reencoding that from a 128 kbps mp3, that suddenly becomes much less impressive.