talk-android
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nextcloud
Video calls using HPB shows no video from android app to android app
Steps to reproduce
- Initiates a video call from an Android Talk app to another Android Talk app
- Answer the video call from the receiving end
Expected behaviour
The call is established and both users starts to see and hear to each other.
Actual behaviour
The call establishes and both users starts to hear each other but can't see the others video.
Device brand and model
Tested on various smart phone models with Android using Talk GPlay version and Lineage using Talk F-Droid version.
Nextcloud Talk app version
Tested with various versions. The problem has persisted since version 15 or so.
Nextcloud server version
Tested with various versions. It has happened since version 25 or so.
Talk version
Tested with various versions. It has happened since version 15 or so.
Custom Signaling server configured
Yes (specify version in Additional Information)
Custom TURN server configured
Yes
Custom STUN server configured
Yes
Android logs
No response
Server log
Nothing on the server log that day
Additional information
This problem has been happening through various Signaling versions. I think I first saw this with Signaling v1.1.0. Also have been experimenting this using many different versions of Janus and is actually happening with the new 1.x branch that recently was made compatible with Talk.
Other observed details:
- Video calls between android app and browser work as expected but calls from android app to android app show no video from the remote end.
- Then toggling video via the camera icon in the app makes the video stream visible on the other end. This has to be done on both ends of the conversation for video to be 2 way.
- I have tested a group call with some android clients and some web clients with the same results. Android clients can't see other android clients but can see web clients. As soon as one android client cycles the video off and on, the other android clients starts to see it. Web clients can see other clients without problem.
- I have experimented from time to time (randomly) that in some video calls, only one peer can see the other at the beginning, so only one side has to cycle the camera to make it appear on the other end.
May be most users are not impacted by this problem or may be most users do not use HPB. I don't know.
Will this issue be addressed in the next version ? or in some future version ?
| Connection type | Cameras work | Cameras only work if... |
|---|---|---|
| Android to Android | ! | they are toggled off and on on both devices |
| Android to iOS | ✓ | |
| Android to Web | ✓ | |
| iOS to Web | ✓ |
Tested versions: Android app: 18.1.0 iOS app: 18.0.3 Nextcloud: 28.0.3 Talk: 18.0.5 nextcloud-spreed-signaling: 1.2.3 Janus: 1.1.2-1 (Debian Bookworm)
I've been trying to find some clues in the signaling log and found nothing of interest. Compared a web to android and a android to android video call log and in both cases the video room is opened correctly. May be there is some handling issue on the code that prevents the video from appearing at first. After that, if you cycle the camera off and on, the video starts to show on the other end. The log doesn't show anything when you cycle the camera, so I think the channels are working correctly.
Another detail about this issue. I have experimented from time to time that in some video calls, one peer can see the other at the beginning, so only one side has to cycle the camera to make it appear on the other end. This is a random event. Most of the times the video calls starts with no video on both ends.
Tested it yesterday, can confirm the bug. HPB with android <-> android the video does not show up
