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    Jellyfin Forum Support Troubleshooting Poor transcoding performance

     
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    Poor transcoding performance

    CPU's fault or wrong settings?
    ArneR
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    #2
    Yesterday, 12:18 PM (This post was last modified: Yesterday, 12:21 PM by ArneR. Edited 1 time in total.)
    I'd say the performance is in line with what I'd expect out of a 12th gen iGPU.

    frame= 4586 fps= 80 q=24.0 size=N/A time=00:03:10.52 bitrate=N/A speed=3.34x

    For comparison, this is Dune (2021) transcoding on an intel i5-11600k (UHD 750) and a Xeon 6244 with an intel ARC A310:

             

    But burning in subtitles also have a cost to performance, so I'd suggest you try enabling the experimental PGS rendering under client settings.

       

    And I couldn't see that you had altered the bitrate, so I'd assume it's on auto, you could try lowering it since you're watching on a phone, there's really no benefit to having the stream in 4K at ~50000kbps

    Audio is being transcoded as well in your case, and that is done on the CPU. There's no clear hint to it being a problem, but the 12100 is only a four core if I remember correctly, and depending on how many threads are being passed through could be worth looking into. I'm running my jellyfin on my truenas scale server, where it's easy to set resource limits in regards to threads and RAM. I also transcode to RAM since I have 256GB of it, less wear on the SSDs.
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    Messages In This Thread
    Poor transcoding performance - by ottomatik - Yesterday, 10:40 AM
    RE: Poor transcoding performance - by ArneR - Yesterday, 12:18 PM

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