[digiKam-users] Extracting audio from .mp4 file

[Tac Tacelosky]

Curiously, the options for OUTPUTFILE in the Custom Shell Script are "Same
as Input", JPG, TIFF and PNG.  Is that configurable somewhere?  I need
flac, mp3 and wav as options.  But yes, that's likely the approach I'll
take, I want to delay using kdenlive until it's absolutely necessary
(mostly to make documentation / training easier).

Thanks.

Tac

On Mon, Jan 27, 2020 at 9:38 AM Andrey Goreev <aegoreev at gmail.com> wrote:

> You can write a shell script that does what you need using ffmpeg and call
> the script from digiKam.
> I guess you will need two scripts - one for Linux (e.g. bash), one for
> Windows (power shell if it is available on Win 7).
> It should not take too long to figure out the script.
>
> Thanks,
> Andrey
>
>
> On Mon, Jan 27, 2020 at 6:33 AM Tac Tacelosky <tacman at gmail.com> wrote:
>
>> Thanks.  Yes, I'm using both those tools now, and they work fine for me.
>> But I need to come up with an easy-to-use cross-platform system for an
>> interviewing workflow with limited internet.  My idea was to use digikam,
>> since it has such explicit support for importing media from SD cards.  I
>> could then ask the users to select the photos and videos they want for the
>> project (crop the photos, etc.)
>>
>> The next step of the process needs just the audio, or a super-low-quality
>> video (e.g 1 fps), so the files can be quickly uploaded to a website, where
>> computers and people can transcribe and translate the content.  That's the
>> step I'm trying to solve right now.  I'm using kdenlive for some of the
>> photo/video selection, but it lacks customized batch jobs, customized
>> proxies (which prompted this question), and extracting audio puts the .flac
>> file in the same directory as the video, etc.
>>
>> I'm trying to avoid asking the users to install ffmeg, so thought there
>> might be a way to set something in a batch queue manager to create the
>> lower-quality videos or extract the audio, and skip kdenlive for this part.
>>
>> I use Ubuntu, but others who want to use this use Windows and Mac.  If I
>> knew docker better, I'd probably wrap everything in a docker container,
>> especially now that Windows 10 has much better support for it.  But some of
>> the computers are older, and probably not even running Windows 10.
>>
>> I guess my feature request would be that ffmpeg and ffprobe be available
>> as customizable tools.
>>
>> Anyway, thanks for the suggestions, I'll play around with the User Shell
>> Script.
>>
>> Tac
>>
>> On Mon, Jan 27, 2020 at 4:19 AM Mick Sulley <mick at sulley.info> wrote:
>>
>>> Pretty sure you can do it with kdenlive
>>>
>>>
>>> On 26/01/2020 19:18, Tac Tacelosky wrote:
>>> > Is there any way to use digikam to extract the audio from a movie clip
>>> > to a wav or mp3 file?
>>> >
>>> > Thanks,
>>> >
>>> > Tac
>>> >
>>>
>>
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