Opus files cannot be played

[avidseeker]

Let's begin with a checklist: Replace the empty checkboxes [ ] below with checked ones [x] accordingly. -->

• [x] I have searched open and closed issues for duplicates
• [x] I am submitting a bug report for existing functionality that does not work as intended
• [x] This isn't a feature request or a discussion topic

---

Bug description

Opus files cannot be played from iPhone

Steps to reproduce

• Send an opus file from Android to iPhone
• Shows up in chat as a recording
• Plays perfectly on Android
• Doesn't play on iPhone

Actual result: clicking the recording doesn't play it

Expected result: plays just like Android

Screenshots

Device info

Device: iPhone 12

iOS version: 17

Signal version: 7.1

[Miguel-Signal]

Hi @avidseeker

Could you please write into support@signal.org with a link to your debug logs and reference this github issue?

To share a debug log from Signal iOS, tap your profile, Settings, Help, Submit Debug Log, Copy Link.

[iromeister]

I don't use iOS myself, but my friends do. I can confirm this and it's really annoying. I share a voice message from Telegram or WhatsApp to Signal on my Android phone, which works as expected there. But my iOS friends cannot play the voice message on their phones.

[rubdos]

Would adding Opus/Ogg/Vorbis to the supported mime type lists be enough to get over this issue? I don't have any iOS development experience, but I imagine supporting (and using) Opus might relieve some storage stress. Context for me: I'm implementing sending voice notes in Whisperfish, and it'd be rather neat if we could use Opus.

diff --git a/SignalServiceKit/src/Util/MIMETypeUtil.m b/SignalServiceKit/src/Util/MIMETypeUtil.m
index 0511962325..617eaee37e 100644
--- a/SignalServiceKit/src/Util/MIMETypeUtil.m
+++ b/SignalServiceKit/src/Util/MIMETypeUtil.m
@@ -85,6 +85,7 @@ NSString *const kLottieStickerFileExtension = @"lottiesticker";
             @"audio/x-aiff" : @"aiff",
             @"audio/3gpp2" : @"3g2",
             @"audio/3gpp" : @"3gp",
+            @"audio/ogg" : @"ogg",
         };
     });
     return result;
@@ -180,7 +181,9 @@ NSString *const kLottieStickerFileExtension = @"lottiesticker";
             @"bwf" : @"audio/wav",
             @"m4a" : @"audio/x-m4a",
             @"m4b" : @"audio/x-m4b",
-            @"m4p" : @"audio/x-m4p"
+            @"m4p" : @"audio/x-m4p",
+            @"ogg" : @"audio/ogg",
+            @"opus" : @"audio/ogg",
         };
     });
     return result;