#Help with FFMPEG profile

1 messages · Page 1 of 1 (latest)

crisp oasis
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I seem to frequently try to tune a channel, and get an error about Plex not being able to tune the channel, or it will tune the channel but it will constantly buffer every ~5 seconds. I assume its something wrong with my FFMPEG profile but I'm not sure where to start. I am using a 1650 super for encoding/transcoding. Here are screenshots, I'm running the newest develop tag/build. Any help would be greatly appreciated.

crisp parcel
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unrelated, but which browser are you using in those screenshots?

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plex prefers ac3 audio

crisp oasis
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Chrome is the browser

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Win11

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I adjusted the audio on the profile to ac3 I'll see if that helps

crisp oasis
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I tried tuning four separate channels/movies after changing to AC3. Two of them were loading/spinning circle for ~60 seconds then an error that Plex couldn't tune the selected channel to check signal. Third tuned, but stops and buffers every ~5 seconds for a few seconds, unwatchable. The fourth tuned, but every ~5 seconds the audio would cut out for a few seconds and then cut back in but never actually "buffered", the video kept playing. What do I need to look at to try and figure out what my issue is? I let each channel/ffmpeg process terminate/die before attempting to tune the next channel. Verified by running nvidia-smi. ErsatzTV is running in docker on an ubuntu 24.04 host with the 1650 super passed through to the ubuntu host/vm. 1650 is shared with plex.

crisp oasis
crisp parcel
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nvidia should perform very well - can you paste the output of troubleshooting > general?

crisp oasis
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The name on the ffmpeg profile is "1920x1080 x264 ac3" but its set to 1280x720 currently as I seemed to have better results at one point with the lower resolution

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The 4 channels I tuned to test were I believe 4/5/6/10

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Sometimes seem to have better luck playing one of the channels that are TV shows instead of movies but sometimes those give the same check signal failed to tune error.

crisp oasis
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Plex client is an nVidia Shield Pro 2019, if that matters

crisp oasis
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Tried to tune multiple channels again in the last 15 minutes. One of them gave the unable to tune check signal error. Two of them tuned but the audio kept cutting out every couple of seconds for a couple of seconds but the video wouldn't buffer, it played straight through the audio cut out. One of them tuned but then kept buffering, audio and video. This is what the nvidia-smi output looked like, pretty much every time I tried to tune a channel the ffmpeg process that appeared was ~1.8GB, with only the couple of existing Plex Transcodes that were using hardly no memory.

crisp oasis
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Tried tuning a channel again tonight and it did, but had the weird audio cutting out thing while the video plays. I closed that stream, waited for the ffmpeg process to die, then changed the profile from AC3 back to AAC, tuned the channel again and the audio played without issue.

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Didn't try any other channels.

dull narwhal
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there is a patch you can do to the gpu driver that removes this limit tho