[Bug?] Audio messages not reproducible on iOS

[ghost]

Description

When I send an audio message to someone who owns an iOS device, they aren't able to reproduce it (that means, when tapping on the play icon the audio simply doesn't start). The message play just fine in android and in telegram desktop.
If I use telegram android to send the audio message, iOS users can play it; that makes me think it is not a problem of sfos/my device.

Environment

• Depecher version: v 0.7.4
• SailfishOS version: 3.2.0.12
• SailfishOS device: Sony Xperia XA2

[foolsbazar]

I can confirm this bug.
Environment

• Depecher version: v 0.7.4
• SailfishOS version: 3.1.0.12, community port
• SailfishOS device: Fairphone 2

[as1an]

Voice notes must be encoded with opus, whereas they are recorded with vorbis. Looks like QMediaRecoder doesn't support opus directly, which means the notes must be encoded manually.