Issues playing video with QMediaPlayer

[Paul]

Hi,

I am currently trying to develop an application to play a video but I'm having some issues with QMediaPlayer and its behaviour.
What my application should do is as following:
- Load media/playlist
- Start video
- Play it for 10s
- Stop it
- Clear the playlist
- Wait for 5s
- Start again indefinitely

I developed all this using a QMediaPlayer, with QMediaPlaylist, on a QGraphicsVideoItem, and with timers to handle playing/pause duration. I listen to different kind of signals such as positionChanged, stateChanged, mediaStatusChanged...

The first time I play the video, it loads fine and plays fine. But I noticed when it stops and tries to clear the playlist, I don't receive all the events I expect to receive:
- After calling stop, mediaStatusChanged says media is loaded: expected behaviour as the player is stopped.
- After clearing the playlist, I don't receive any event from mediaStatusChanged and mediaStatus stays as loaded whereas the playlist is empty. In this case, I was expecting a NoMedia event in mediaStatusChanged, is that right?
Then, if I keep going, the player will start playing but it will not play anything...

Also, it might or might not be related, but I noticed that if I do not call setVideoOutput, then I don't see the issue above but I can see the position being updated and the different mediaStatus events. I also don't have any video on screen but this was expected for the test

Did you already hear about this kind of issue? Do you have any idea on how to fix this?

I hope it's clear enough, let me know if it needs more details.

Best regards,
Paul

[barbara]

We have a few questions.

1  What platform (OS and version) are you using?

2  Did you build CopperSpice from source? If so, from what sha? If you are using one of our pre-built binaries, which version?

3  What tool chain are you using? compiler and version, cmake version, etc

But I noticed when it stops and tries to clear the playlist, I don't receive all the events I expect

4  Can you create a very small code sample which shows this issue? Then post a link to the source code.

Barbara

[Paul]

Hi Barbara,

Thank you for your message! And sorry for the late answer, I was in holidays.

1  What platform (OS and version) are you using?

I reproduced the issue on Ubuntu 20.04.

2  Did you build CopperSpice from source? If so, from what sha? If you are using one of our pre-built binaries, which version?

I used pre-built binaries from github. It was Copperspice v1.7.4: copperspice-1.7.4-ubuntu20.04-x64.tar.bz2.

3  What tool chain are you using? compiler and version, cmake version, etc

I'm using g++ v9.4.0 and CMake v3.16.3.

4  Can you create a very small code sample which shows this issue? Then post a link to the source code.

Here is the link to a sample application: [EDIT] https://www.dropbox.com/sh/47306fzlrtr3si6/AAA0mL9tybh-Xqq3SHT7FHjqa?dl=0
As I said in my first message, playing the video the first time works fine. But after I clear the media playlist, media doesn't seem to load properly ever again.

I hope it helps. Let me know if you need anything else.

Best regards,
Paul

[barbara]

Can you move this to something like Google Drive or Drop Box. The site you are using requires a license agreement.

Barbara

[Paul]

Hi,

Here is a Dropbox link: https://www.dropbox.com/sh/47306fzlrtr3si6/AAA0mL9tybh-Xqq3SHT7FHjqa?dl=0
I also edited my previous message with this link.

Best regards,
Paul

[Paul]

Hi,

Did anyone have similar issues with QMediaPlayer?
Or does anyone have an idea on how to fix this please?

Thanks