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Topic: SoX' trim writes metadata/tags. How to disable? (Read 1201 times) previous topic - next topic
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SoX' trim writes metadata/tags. How to disable?

I am trimming audio files that need to have no metadata to be able to be used in machine learning. I trim these files with SoX using the following command:

Code: [Select]
sox input.wav input_trim.wav trim 1300000s 100000s

This creates a trimmed WAV file that maintains the original sample rate and bit depth. However, it seems to write some metadata that makes the file unusable. I have to open the file in Audacity and export it to get a "clean" and working file.

Is it possible to tell SoX to write no metadata or tags to the output so that I do not need to do the Audacity procedure?

Re: SoX' trim writes metadata/tags. How to disable?

Reply #1 –
I'm not sure how to do this with Sox, but here's an example with ffmpeg:
Code: [Select]
ffmpeg -i input.wav -c:a copy -ss 1300000 -t 100000 -bitexact output.wav

Re: SoX' trim writes metadata/tags. How to disable?

Reply #2 –
Quote from: Replica9000 on
I'm not sure how to do this with Sox, but here's an example with ffmpeg:
Code: [Select]
ffmpeg -i input.wav -c:a copy -ss 1300000 -t 100000 -bitexact output.wav
Thank you! I will try it out asap.

Re: SoX' trim writes metadata/tags. How to disable?

Reply #3 –
You can also try
Code: [Select]
sox input.wav -t wavpcm input_trim.wav trim 1300000s 100000s

Re: SoX' trim writes metadata/tags. How to disable?

Reply #4 –
Quote from: punkrockdude on
Quote from: Replica9000 on
I'm not sure how to do this with Sox, but here's an example with ffmpeg:
Code: [Select]
ffmpeg -i input.wav -c:a copy -ss 1300000 -t 100000 -bitexact output.wav
Thank you! I will try it out asap.
It threw error messages saying that nothing was written to the file. I apologise for not copying and pasting the messages so that we can come up with a solution.