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Android Judder/stutter after 30 minutes of playback - Printable Version

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+---- Thread: Android Judder/stutter after 30 minutes of playback (/showthread.php?tid=378634)

Judder/stutter after 30 minutes of playback - BarbaxX - 2024-08-28

Hello everyone,

I am currently experiencing a strange issue with Kodi (latest version [Omega] for Android TV): Up until the 30 minute mark videos run smoothly, then judder begins and gets worse over time.
  • The playback device is an Android TV Dongle (Benq QS01) running Android TV 12.
  • I have set frame rate matching to "ON", so 24p content plays at 24Hz (TV refresh rate switches).
  • The source files are located on my NAS and I have tried playing them via Kodi directly (source = network location) and via the addon "PlexKodiConnect", since I am running a Plex server as well.
  • The judder also happens in the official Plex app on this device after 30 minutes.
  • The judder does NOT happen on Amazon Prime Video (maybe due to the lack of native framerate-switching?)
  • The videos/movies play fine on other playback devices (Nvidia Shield, PC), in Kodi and the Plex app.
I have tried changing the settings "Disable HW Overlay" (in Android TV developer menu) and "number of buffers used by graphics driver" (in Kodi):
  1. Kodi graphics buffers to 2 with HW Overlay disabled
  2. Kodi graphics buffers to 3 with HW Overlay disabled
  3. Kodi graphics buffers to 2 with HW Overlay enabled
  4. Kodi graphics buffers to 3 with HW Overlay enabled
Sadly these settings didn't solve the issue.

The only way I have found to mitigate the issue is enabling the Player Debug Info OSD in the top left corner.
As long as this OSD is on, the video runs smoothly.
I have uploaded a video of the issue here (you can see when debug OSD is on): Kodi Judder issue

Can anyone tell me how the debug OSD is handled and why it fixes the frame pacing?

RE: Judder/stutter after 30 minutes of playback - BarbaxX - 2024-08-29

I have noticed that the Player debug OSD only helps if the toggle "Disable HW Overlay" is ENABLED in the Android TV developer menu.

RE: Judder/stutter after 30 minutes of playback - BarbaxX - 2024-08-30

Amazon Prime Video has the same issue when I force 24Hz via Android TV Display settings. So I guess the problem is not tied to frame rate matching, but instead to a problem with 24Hz playback.
The issue does not occur when playing 60Hz content at 60Hz.
When playing 24Hz content at 60Hz the usual 3:2 pulldown judder occurs.

But why does the Player Debug info overlay fix the issue at 24Hz?

RE: Judder/stutter after 30 minutes of playback - jogal - 2024-08-31

https://github.com/xbmc/xbmc/issues/25681#issuecomment-2322824464