iPhone Client Cannot Download and View WEBM Videos

[severyn261]

Steps to reproduce

1. Send a video in WEBM format from another client (e.g., desktop or Android).
2. Open the iPhone client and locate the received WEBM video.
3. Try to download and open the video on the iPhone.

Outcome

What did you expect?

1. The video should be downloadable.
2. The video should be playable within the iPhone client or using the iOS default media player.
3. The video can be downloaded.

What happened instead?

1. The video does not download
2. The video cannot be opened/viewed.
3. Error "PHPhotosError-Domain error 3302" received.

Your phone model

iPhone 15 Pro

Operating system version

iOS 18.3.1

Application version

1.11.25

Homeserver

Synapse v1.123

Will you send logs?

No

[c2rq13]

Hi!
I have the same problem on iPhone.
I checked matrix-synapse server logs - there is no any errors, just HTTP 200 OK reply on "GET /_matrix/client/v1/media/download/..." request.

[Dofamin1]

I have the same problem

[orhrtq826163]

Checked. We have the same problem

[Hek041]

iPhone 14, same problem - I can't watch videos

[rostag]

Same issue. Lack of WEBM support on iOS' Element is a blocker for my company. We've been looking for using it, but this is really stopping us.

[pixlwave]

Duplicate of #2106