Investigate buffer deadlock prevented issues.

[SSSSam141]

When playing jellyfish video, it will pause by the issue of buffer deadlock prevented for serveral times.

• Figure out what happens when buffer deadlock prevented protection occurs.
• Failed to open Xsplitter:mmal_vout module #12
• Decrease the occurrence of buffer deadlock prevented.

[omarcostahamido]

Thank you @SSSSam141 for opening this issue. And so it begins... :)
Fyi, the website where you download that jellyfish sample video includes different compression renders that you may also try in your experiments.
Good luck, and please keep us posted.

[omarcostahamido]

@SSSSam141 please feel free to share here some the things you've been trying.

[KaneBetter]

Just find out that if you run sudo apt install vlc in the terminal.
After that, the error message disappeared.
However, this still needs to be proven by others.

[SSSSam141]

I have tried to run vlc to play the video: jellyfish without using Max. The problem was still there so we can make sure that the cause lies in the part of VLC. I have checked that our Raspeberry pi model is 4 (cmd: cat /proc/device-tree/model ), its system is bullseye 11 (cmd: cat /etc/os-release), and the vlc version is 3.0.16 (cmd: vlc -v).
Also, we can use debug mode for the vlc, change line 6 at pvm.py file: inst = vlc.Instance('--verbose 2'), which will be more convenient for getting more information when debugging.

I tried to upgrade the version of VLC but the buffer deadlock prevented message is still there.
The completely remove and reinstall VLC commands: In a terminal, run:
sudo apt-get remove --purge vlc
sudo apt-get autoremove
sudo apt-get autoclean
sudo apt-get install vlc
Done.
Thus, reinstall the vlc with the latest version does not help to solve the problem.

The error message: mmal_xsplitter vout display error: Failed to open Xsplitter:mmal_vout module happens earlier than the buffer deadlock prevent issue #12 and the buffer deadlock prevent is an error of main decoder error. The mmal_vout is the decoder of vlc which failed to open, so that I think we should solve the problem of #12 first then we can see whether this problem is still there. I will move to see #12 first.

[omarcostahamido]

Just find out that if you run sudo apt install vlc in the terminal.
After that, the error message disappeared.

huh... that's strange.

I have tried to run vlc to play the video: jellyfish without using Max. The problem was still there so we can make sure that the cause lies in the part of VLC.

Nice.

Thus, reinstall the vlc with the latest version does not help to solve the problem.

Thx for testing this. Please remind me: is bullseye 11 the latest raspberrypiOS?

The error message: mmal_xsplitter vout display error: Failed to open Xsplitter:mmal_vout module happens earlier than the buffer deadlock prevent issue #12 and the buffer deadlock prevent is an error of main decoder error. The mmal_vout is the decoder of vlc which failed to open, so that I think we should solve the problem of #12 first then we can see whether this problem is still there. I will move to see #12 first.

Perfect! Prioritizing :) Feel free to change the label on #12 to High. Also, add it here as a step on the TODO list.

[SSSSam141]

@omarcostahamido Bullseye 11 is the latest version for raspberryPiOS.

[SSSSam141]

After I have reinstalled the os with the old version buster 10, the problem still exists. I will try to find the cause now.

[omarcostahamido]

@SSSSam141 any updates on this?

[SSSSam141]

@SSSSam141 any updates on this?

@omarcostahamido The new media player: OMXPlayer does not have this issue. I think we can close this issue.

[omarcostahamido]

Then I suggest closing this issue with the PR that makes that transition too! #19