How can I convert GSM sound files to G.729 format? I've used Sox in the past for transcoding sound files, but have not been able to find a way to transcode to G.729. Using Sox, I have found a way to convert GSM to WAV.
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A free and easy way to convert proper sound files to G.729 is adding appropriate free G.729 codec binary to Asterisk and use 'convert' module.
You can follow these steps:
- Install Asterisk
- Follow the instructions and install the free G.729 codec for Asterisk
- And then issue this command to convert your 8k sampled gsm file to G.729:
asterisk -rx "file convert /path/to/your/file/inputfilename.gsm /path/to/your/file/outputfilename.g729"
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