Bug 1065746

Summary: REQUEST: Please allow passing of -ss and -to (-t) to ffmpeg
Product: [Fedora] Fedora Reporter: Ali Akcaagac <aliakc>
Component: youtube-dlAssignee: Till Maas <opensource>
Status: CLOSED WORKSFORME QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 20CC: aliakc, i, metherid, opensource
Target Milestone: ---Keywords: Reopened
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2015-02-10 11:20:53 UTC Type: Bug
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Description Ali Akcaagac 2014-02-16 16:28:58 UTC 
As the description explains. I would like to ask a feature request and hope the maintainer of this fedora package could forward my request to upstream developers.

It's nice that you can dump youtube videos into audio and even have it convert using ffmpeg. What would be nice is to allow youtube-dl to pass START and STOP (duration) through to either ffmpeg or whatever is used as alternative.

Reason behind my request:

Some movies have some talking before or after the music-video (or whatever I watch). I would really like to avoid using youtube-dl AND ffmpeg afterwards only to convert one file. It would be a huge benefit to have this offered by youtube-dl. So I only need to deal with youtube-dl alone.

Thanks.
Comment 1 Ali Akcaagac 2014-05-10 07:50:43 UTC 
Closing because of no feedback from package owner.
Comment 2 Rahul Sundaram 2014-05-10 18:27:48 UTC 
This still needs to be forwarded to upstream.
Comment 3 Till Maas 2015-01-28 19:59:47 UTC 
Reported upstream: https://github.com/rg3/youtube-dl/issues/4803
Comment 4 Till Maas 2015-01-28 21:09:03 UTC 
Upstream comment:

 jaimeMF commented 28 minutes ago

For a few versions, youtube-dl has the --exec option which allows you to execute arbitrary commands after each file has been downloaded. This can be used for you usercase:

    Create the file cut.sh and make it executable:

    #!/bin/sh

    start=$1
    duration=$2
    file="$3"
    tempfile="$file.tmp"
    mv "$file" "$tempfile"

    ffmpeg -y -i "$tempfile" -ss "$start" -t "$duration" -c copy "$file"

    rm "$tempfile"

    Then run, for example, youtube-dl test:youtube_1 --exec "./cut.sh 20 40 {}". You can even use options like --extract-audio. You may want to give it a proper name to the script and put it in your $PATH, so that you can call it from everywhere.

I thinks that's enough and youtube-dl shouldn't have special support for it, for a few reasons:

    You can adapt it to any options you need.
    You can use any program you want, you are not limited to ffmpeg/avconv.
    We could of course ad an option --ffmpeg-options which would add the arguments in the ffmpeg command (before the output filename). But this can't be done in the existing postprocessors (for example if you combine the --add-metadata and --embed-subtitles options, ffmpeg would be run twice with -ss 20 -t 40 which is not the expected behaviour). So it would need its own postprocessor, which would be equivalent to the script I posted.

This is just my opinion, so if you (or someone else) thinks that we should really add support for passing these options, I don't mind reopening the issue.


----------------------------

Please reply, whether you would like me to reopen the issue.
Comment 5 Fedora Admin XMLRPC Client 2015-02-09 00:16:25 UTC 
This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.
Comment 6 Ali Akcaagac 2015-02-20 16:13:05 UTC 
Yes closing it that's fine. The RFE was old anyways.