Hi, I’m trying to send an notification with an image (from the Synology DSM integration) to the Home Assistant Companion app. I’m getting the notification but not the image… 
Has any one had any luck with sending image: media-source:// to the Home Assistant Companion app?
The integration for DSM is:
Synology DSM - Home Assistant (home-assistant.io)
The integration allows pictures from the Synology Photos app to be shown in the media folder.
In Home Assistant I’m able to navigate to the pictures, and according to the Synology docs this should give me a media url as such: media-source://synology_dsm/<unique_id>/<album_id>/<image>
Via the Mobile App - Home Assistant (home-assistant.io) integration, and with the Home Assistant Companion app on my Android phone, I’m try to send the following notification with an image as an attachment ( Standard Attachments | Home Assistant Companion Docs (home-assistant.io) ) :
service: notify.mobile_app_<device>
data:
title: Synology Photos • QR Code
message: QR Code from Synology Photos
data:
channel: Synology
notification_icon: mdi:qrcode-scan
group: Synology
tag: Synology
image: media-source://synology_dsm/<unique_id>/<album_id>/<image>
I have removed the real source of the device and the image, since I know that I’m sending the correct data
In the Home Assistant Companion app in the debug I’m seeing:
Failed to create image decoder with message ‘unimplemented’
06-23 22:24:13.222 5259 6408 D WebSocketRepository: Websocket: onMessage (text)
06-23 22:24:13.223 5259 6408 D WebSocketRepository: Message number 2 received
06-23 22:24:13.226 5259 6598 D WebSocketRepository: Sending message 84: {type=mobile_app/push_notification_confirm, webhook_id=#################, confirm_id=###############, id=84}
06-23 22:24:13.227 5259 6598 D WebSocketRepository: Message number 84 sent
06-23 22:24:13.399 5259 6408 D WebSocketRepository: Websocket: onMessage (text)
06-23 22:24:13.400 5259 6408 D WebSocketRepository: Message number 84 received
06-23 22:24:13.420 5259 5259 D MessagingService: Creating notification with following data: {channel=Synology, notification_icon=mdi:qrcode-scan, group=Synology, tag=Synology, image=media-source://synology_dsm/######/##/######, message=QR Code from Synology Photos, title=Synology Photos • QR Code, webhook_id=#################################, server_id=1}
06-23 22:24:13.435 5259 5259 D ServerConnectionInfo: localUrl is: true, usesInternalSsid is: true, usesWifi is: true
06-23 22:24:13.435 5259 5259 D ServerConnectionInfo: Using internal URL
06-23 22:24:13.439 5259 5976 D ServerConnectionInfo: localUrl is: true, usesInternalSsid is: true, usesWifi is: true
06-23 22:24:13.439 5259 5976 D ServerConnectionInfo: Using internal URL
06-23 22:24:13.446 5259 5976 D TrafficStats: tagSocket(5) with statsTag=0xffffffff, statsUid=-1
06-23 22:24:13.520 5259 5976 D OpenGLRenderer: --- Failed to create image decoder with message 'unimplemented'
06-23 22:24:13.523 5259 5259 D MessagingService: Show notification with tag "Synology" and id "#######"
06-23 22:24:13.530 5259 5259 D MessagingService: Show group notification with tag "group_Synology" and id "-########"
Has any one had any luck with sending image: media-source:// to the Home Assistant Companion app?