[FFmpeg-user] Converting .trm files ("ForTheRecord") -- force AAC decoding?

Carl Eugen Hoyos ceffmpeg at gmail.com
Tue Jun 26 22:53:10 EEST 2018

2018-06-26 20:07 GMT+02:00, John A Hawkinson <jhawk at mit.edu>:

> Here's complete uncut console output from a naive attempt:
> pb3:CR24 jhawk$ ffmpeg -c:a aac $t1  t1.wav

For future tries using FFmpeg, the syntax is:
$ ffmpeg -i input output
So, if FFmpeg would support AAC celp, it would be:
$ ffmpeg -c:a aac -i t1.trm out.wav

FFmpeg does not support AAC celp, therefore decoding your
sample is not supported with FFmpeg (including FFmpeg-based
The reason is not so much that it is not trivial to find the
specification but that nobody else (to my knowledge) has been
using this not completely up-to-date technology.

I created ticket #7279, thank you for the sample!

Carl Eugen

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