Video playback stuck at opening and does not recover

[simonebarattin]

Good morning,

I'm having an issue with the AMC SDK. I'm developing a streaming application in C#, which shows the live stream of 5 different cameras and allows then the user to record and playback the videos.

Everything works, but something strange happens after some time of using the playback function. Basically if I give the command play and stop in rapid sequence, at least one of the 5 displays stops working. I have a listener on the status change that shows a loading screen, and what happens in the "faulty" AMC instance is that it stays in the status AMC_STATUS.AMC_STATUS_OPENING, while the others correctly load and start playing the videos.
I tried looking for possible causes in the code but couldn't really find anything.
What I did was work around the problem: whenever I have a timeout on the loading I hard-reset the 5 AMC displays. This solution seemed to work at first, after having the timeout the displays resetted as intended and started playing the videos normally.
With resetting I mean removing the control, instantiating it again, and loading it back in the graphic.

However, when I tested the solution on a bigger screen (meaning bigger Axis displays) the solution did not work anymore. What happens is that the faulty class, even after resetting it, stayed in the "OPENING" status and after trying to play other files the problem spreads to the other 4 classes as well. Also, If I continue trying to reset and play different videos, the Axis classes reach a point where they stay in status 0.
I don't really understand what could be the cause of the problem.. is it a bug on my side? the things that I dont understand is that my "workaround" stopped working after the displays got bigger, does this mean it's a renderer problem?

FYI: the cameras are 5 AXIS F2135-RE Fisheye Sensor connected to 2 AXIS F9114 Main Unit. The version of the firmware is the latest and the same goes for the SDK version (7.52). The files I play are the ones I obtain untouched from the recording (.asf videos)

Thank you for your support. Regards,
Simone

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[vivekatoffice]

Hi @simonebarattin ,
As Rocky Ji suggested here, you can try updating the Axis OS.

[simonebarattin]

Hi @vivekatoffice,
I've already installed the latest LTS 11.11.109. Should I use the active one (12.0.92)?
Also, I've previously installed the AxisH265DecoderX64 as well, as mentioned in that post.

[vivekatoffice]

Hi @simonebarattin ,
Could you provide a small sample based on the AMC SDK examples that reproduces the issue?

Also, try to check if the other status codes can be used to refresh only those controls that have already started.

[simonebarattin]

Yes I will try to create a small sample that recreates the problem, thank you.

In the meantime,

try to check if the other status codes can be used to refresh only those controls that have already started

you mean that I can force a status on a specific instance? Or are you asking what is the status of the other AMC instances?

[vivekatoffice]

No, we can't force a status but may use it to perform different operations.