[FFmpeg-user] How to change recording datetime of WAV files

[Bouke]

> On 15 Sep 2021, at 09:19, Felix E. Klee <felix.klee at inka.de> wrote:
> 
> I tried now to change the creation time, but this actually removes it:
> 
>    $ ffprobe ZOOM0004.WAV
>    […]
>      Metadata:
>        encoded_by      : ZOOM Field Recorder F1
>        date            : 2021-09-13
>        creation_time   : 19:21:33
>        time_reference  : 3345264000
>        coding_history  : A=PCM,F=48000,W=24,M=stereo,T=ZOOM Field
>                          Recorder F1


why would you want to change the creation time if you have a bwf timestamp?
That ’should’ be locked to other equipment and is the most important metadata, any post software will use that instead of file creation time.


Bouke

>    […]
>    $ ffmpeg -i ZOOM0004.WAV -metadata creation_time="03:17:33" OUT.WAV
>    […]
>    $ ffprobe OUT.WAV
>    […]
>      Metadata:
>        date            : 2021-09-13
>        encoder         : Lavf58.76.100
>        encoded_by      : ZOOM Field Recorder F1
>    […]
> 
> What’s wrong?
> 
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