[Support]: Feature request: Custom file extension for recordings

[tolostoi]

Checklist

• I tried using the latest ShizuCallRecorder version.
• I tried using the latest version of recommended Shizuku fork (thedjchi)
• This is not a support request related to a problem with Shizuku

ShizuCallRecorder Version

1.2.0 (15)

Shizuku Version

ShizuCallRecorder-1.2.0.apk

Android Version

Android 16

The model of your device

Honor Magic 8 pro

Explain your problem

First of all, thank you for creating ShizuCallRecorder. It works great and the Opus quality/size ratio is excellent.

I have one small feature request that I think could be useful for other users as well.

Would it be possible to add an option to choose the file extension independently of the audio codec?

For example:

Codec: Opus
Container: Ogg
File extension: .ogg (default) or .m4a

The audio data would remain exactly the same (Opus in an Ogg container); only the filename extension would change.

The reason is that some OEM voice recorder applications (for example, Honor's stock Recorder) refuse to index or play .ogg files, but they work perfectly if the exact same file is simply renamed to .m4a.

This would avoid the need for external automation tools or post-processing scripts and would improve compatibility with some Android vendor apps without affecting the recording format itself.

Even a simple "Custom file extension" text field in the settings would be enough.

Thank you for considering it!

[kitsumed]

I am not against it as-is, the problem happens when writing the audio file. On every OEMs, for some reasons, from my understanding, the way audio is encoded in the file itself is in part controlled by the file extension in the name. This means that certains file name will cause a crash as the phone does not know how to handle them. This is what happened with the AAC codec. This would force us to have a weird logic that first write the file, and then rename it, which I'm not really a fan of.

---

That aside, I had reports from another users on Android 16 Honor Magic 10 that they could do it with m4a/ogg. Take a look at the table here
https://github.com/kitsumed/ShizuCallRecorder/blob/main/docs/troubleshooting.md#can-we-integrate-specific-file-name-formats-to-support-native-phone-application-integrations
Tell me if this works on your device, maybe they changed some code between their device models.

[tolostoi]

The built-in player on Honor expects m4a or wav so it can index it and add it to its list. If I use aac which makes m4a everything is fine, but I want to use opus compression because it is more efficient and takes up less space. If the file is in opus compression and an ogg container, but I rename it to m4a, the built-in player plays it and doesn't crash. Maybe adding a file extension tag to the file name tags would be the most elegant solution, whoever wants it uses it.
here: Can we integrate specific file name formats to support native phone application integrations?

While we do not and will not offer pre-defined templates for specific apps, we provide the ability to customize your filename format by including multiple details like the hour, contact name, or, when available, the name of the application that made the call, FILE NAME EXT

[kitsumed]

here: Can we integrate specific file name formats to support native phone application integrations?

Currently everything audio related is tried together in enums (codec/MIME name along with file extension) so it would add complexity.