• Alphane Moon@lemmy.worldOPM
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    6 hours ago

    Which Threadripper? What preset (I am assuming this is for 1080p sources) and how much did it take to transcode 90 minutes.

    I am sticking to x265 for HD content (x264 is fine for DVDRips), AV1 takes too long to encode and I didn’t see a noticeable improvement for size/quality ratio dynamics.

    To be honest, I don’t even see a significant improvement with x265 (relative to x264) for content made before ~2005 or so. Grainy and older content generally requires file sizes comparable to x264 transcodes if you want to preserve grain and avoid smoothing.

    • cmnybo@discuss.tchncs.de
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      9 hours ago

      It was a 1950x. I canceled the transcode after several hours and it only got though a couple minutes of 1080p video. I don’t remember the exact times, it was about 5 years ago. I haven’t bothered with AV1 since then.

      • Alphane Moon@lemmy.worldOPM
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        6 hours ago

        Yeah, the first time I tried AV1 (on CPU) I also cancelled the transcode after 4 hours.

        I was out for a few days, so I left the encode on. It was something stupid like over 50 hours for a 90 minute movie on a 5800X (this was on the slowest preset doe the AV1 encoder, since that’s what always use for x264/x265).

        I would imagine Threadripper 9000 performance is notably better than the the 1950X even if you get a 16 core CPU. Going for a 32 core CPU should roughly halve the timing even further.