2 hours ago
Hi,
so I just migrated my Jellyfin server from Linux/amd64 to a Mac with an M1. I've enabled hardware acceleration in the transcoding settings. Everything works, except that incompatible videos (say, an AVI with a H263 track) will be transcoded to AV1. That's a problem because the M1 doesn't support AV1 encoding yet and software encoding is slower than 1x, even on the ridiculously low resolution of the source.
Transcoding settings enable hardware decoding for everything. Hardware encoding is enabled. Under Encoding format options, I have only selected "Allow encoding in HEVC format". Still, in Chromium, playback will start after a short delay and then constantly stutter. Playback Info reveals that it's transcoding to VP9 and OPUS, for some reason, at 0.79x.
I have checked the client's playback settings in Chromium, and manually set "Preferred transcode video codec" to HEVC, as well as "preferred transcode audio codec in video playback" to AAC. Even still, I always get VP9/OPUS.
In Firefox, it will transcode to H264 instead, which is not preferred, but at least it's fast enough.
I just tested it with the old instance on Linux/amd64, and it behaves the same, with the same settings, only it takes almost longer to even start. So it's not a problem with the Mac version or AppleVideoToolbox.
Is there any way to just disable VP9 transcoding? And is this a bug (it seems like it) or am I missing something? Ideally, it should also prefer HEVC if I want to and if the client is capable (and the client settings even prefer HEVC) – but that's another story.
so I just migrated my Jellyfin server from Linux/amd64 to a Mac with an M1. I've enabled hardware acceleration in the transcoding settings. Everything works, except that incompatible videos (say, an AVI with a H263 track) will be transcoded to AV1. That's a problem because the M1 doesn't support AV1 encoding yet and software encoding is slower than 1x, even on the ridiculously low resolution of the source.
Transcoding settings enable hardware decoding for everything. Hardware encoding is enabled. Under Encoding format options, I have only selected "Allow encoding in HEVC format". Still, in Chromium, playback will start after a short delay and then constantly stutter. Playback Info reveals that it's transcoding to VP9 and OPUS, for some reason, at 0.79x.
I have checked the client's playback settings in Chromium, and manually set "Preferred transcode video codec" to HEVC, as well as "preferred transcode audio codec in video playback" to AAC. Even still, I always get VP9/OPUS.
In Firefox, it will transcode to H264 instead, which is not preferred, but at least it's fast enough.
I just tested it with the old instance on Linux/amd64, and it behaves the same, with the same settings, only it takes almost longer to even start. So it's not a problem with the Mac version or AppleVideoToolbox.
Is there any way to just disable VP9 transcoding? And is this a bug (it seems like it) or am I missing something? Ideally, it should also prefer HEVC if I want to and if the client is capable (and the client settings even prefer HEVC) – but that's another story.
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