Jellyfin Duplicate Chromecast Media Players

[crazystick]

The problem

Jellyfin creates a new Chromecast device/entity every time you play something using the native Jellyfin app on Android.

This seems to be the same as issue #105000 but since I don't use AppleTV I don't know what Swiftfin is so not sure what the resolution might be.

What version of Home Assistant Core has the issue?

core-2023.11.1

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Container

Integration causing the issue

Jellyfin

Link to integration documentation on our website

No response

Diagnostics information

config_entry-jellyfin-787b9eb6dd7dfe73d109348717be4c1b.json.txt

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response

[home-assistant]

Hey there @j-stienstra, @ctalkington, mind taking a look at this issue as it has been labeled with an integration (jellyfin) you are listed as a code owner for? Thanks!

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[tim-hitchins-ekkosense]

@crazystick On your Jellyfin server do you have DLNA "Play To" enabled?

1. Login as an admin user
2. Open the hamburger menu
3. Under Administration click Dashboard
4. Under Devices click DLNA

It's the top checkbox under "Settings". I have a misbehaving Toshiba TV which was showing up as 200 separate DLNA cast targets. Turning that off has stopped it from happening, with the downside I can't use the DLNA Cast feature.

[crazystick]

@tim-hitchins-ekkosense I tried your suggestion but it doesn't seem to have improved matters. I removed and readded the integration which got rid of most of the entities, but they are still going up.

[ctalkington]

the common issue is that devices are created based on the reporting that the session device supports persistent identifier. The client applications report this to the server but they usually use some method on the client device as the identifier and its expected to be persistent.

However, client devices can regenerate identifier to improve privacy that can cause the identifier to be less persistent than thought. Think of it like resetting Google advertising IDs on Android devices.

[ctalkington]

for chromecast, it's deriving deviceId by base64 the name of receiver or first sender ID or time. This likely leads to the growing list of devices.

https://github.com/jellyfin/jellyfin-chromecast/blob/66a21d2df36ed7d3d69cfec44ec8e8180d858f34/src/components/jellyfinApi.ts#L33-L49

https://github.com/jellyfin/jellyfin-chromecast/blob/66a21d2df36ed7d3d69cfec44ec8e8180d858f34/src/components/maincontroller.ts#L310

so it's actually not creating persistent identifier and properly reports SupportsPersistentIdentifier: false so you see the media players still because its generating new playback session ids

However, in your diagnostics, most your chromecast seem to report SupportsPersistentIdentifier: true which is intriguing

[ctalkington]

I'm wondering if we should just ignore sessions where the device_id starts with "chromecast_" as it seems like these are transient sessions and keeping them around as entities wouldn't have any benefit

[golles]

I don't think this issue is only related to Chromecast devices. also to iPhone apps (Finamp and the regular app) and the LG Smart TV app.

For the record, there is only one actual iPhone and LG Smart TV device.

Entities (x watching sensor I kept out of the screenshot):

Devices:

In the past, I've deleted these duplicate media_player entities several times but they are coming back