stuttery playback

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pseudotheist
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Posts: 15
Joined: Mon Aug 18, 2025 2:16 am
United States of America

stuttery playback

Post by pseudotheist »

So, it looks like I've got things receiving, recording and playing mostly as expected.

I do notice on active screens I seem to get some jittery playback; not signal loss (I'm not getting blockiness), but it looks like it's playing @ 12 FPS; a tennis ball kind of teleports a few inches at a time across the frame. If there's screen tearing, I haven't caught any of that.

I'm wondering if maybe there's a codec or something I need to load. I'm on Mint, and up-to-date so far as I know as of last week. Thought I'd throw this out here and see if anyone has any obvious ideas.

Thanks!
white_haired_uncle
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Posts: 548
Joined: Thu Feb 23, 2023 8:55 pm
Location: Safe outside my gilded cage
United States of America

Re: stuttery playback

Post by white_haired_uncle »

One of the developers has mentioned the "Enable Music Choice" option. I don't know anything about it.

viewtopic.php?f=36&t=5799

After watching the same part of the same video on the same machine with something like mpv or vlc, if it's only mythtv that seems to have an issue I would start looking at your video profile. In particular, I've seen people mentioning issues with VAAPI on ubuntu 24.04 (not sure what Mint version you're on).

If you haven't already, while watching a recording hit 'm', Playback, Playback Data.

Frontend log, of course (possibly /var/log/mythtv/mythfrontend.log, maybe journalctl -t mythfrontend).

Curious, Enable Music Choice is documented just before Playback Profiles.
pseudotheist
Junior
Posts: 15
Joined: Mon Aug 18, 2025 2:16 am
United States of America

Re: stuttery playback

Post by pseudotheist »

FYI: this is definitely not mythtv related. Looks to be a dual GPU issue. If I connect through the integrated GPU, mythtv recorded video is smooth. Allegedly the integrated GPU should be disable-able in "BIOS" to fix the conflict, but it is not actually an option. Gotta research alternate methods for that, but wanted to post a bit of a resolution for the thread.
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