Checking for metadata in AMR file.
exiftool amr.amr
ExifTool Version Number : 12.60
File Name : amr.amr
Directory : .
File Size : 2.1 MB
File Modification Date/Time : 2011:05:26 07:00:48+05:00
File Access Date/Time : 2023:05:27 10:35:15+05:00
File Inode Change Date/Time : 2023:05:27 10:35:15+05:00
File Permissions : -rwxr-xr-x
Error : Unknown file type
Sample can be downloaded here:
https://software-download.name/sample-amr-audio-file/dl/amr-sample-audio.zip
I found this page (https://docs.fileformat.com/audio/amr/) which seems to describe the format a bit.
Thanks for the sample. I'll look into this when (if?) I get a chance.
- Phil