Thanks for reporting your issue. Please make sure these boxes are checked before submitting your issue - thank you!

- [X] I looked for a similar issue and couldn't find any.
- [X] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/
- [x] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

Detailed guidelines: http://gpac.io/2013/07/16/how-to-file-a-bug-properly/

Hello everybody,

I tried to change the language and name of audio tracks using mp4box (–lang 2=Eng -name 2="Surround 5.1").
The tool does indeed set the language but the track name stays the same (title0). Did I do something wrong, is it the tools fault or is it simply not possible to change names in mp4box. 

Edit: For my desired use case I can't use ffmpeg (or at least it won't work with the video codec)...
Audio track name change did not apply
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Audio track name change did not apply
Issue date:

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Thanks for reporting your issue. Please make sure these boxes are checked before submitting your issue - thank you!

- [X] I looked for a similar issue and couldn't find any.
- [X] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/
- [x] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

Detailed guidelines: http://gpac.io/2013/07/16/how-to-file-a-bug-properly/

Hello everybody,

I tried to change the language and name of audio tracks using mp4box (–lang 2=Eng -name 2="Surround 5.1").
The tool does indeed set the language but the track name stays the same (title0). Did I do something wrong, is it the tools fault or is it simply not possible to change names in mp4box. 

Edit: For my desired use case I can't use ffmpeg (or at least it won't work with the video codec)...
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