Subject: [bug#40060] [PATCH 1/2] gnu: youtube-dl: Use ffmpeg and pycryptodome

From: Brice Waegeneire <[email-masked]>
Date: Sat, 14 Mar 2020 17:39:50 +0000

On 2020-03-14 17:21, Leo Famulari wrote:
> On Sat, Mar 14, 2020 at 03:42:20PM +0100, Brice Waegeneire wrote:
>> * gnu/packages/video.scm (youtube-dl)[arguments]: Add phase
>> wrap-executable.
>> [inputs]: Add ffmpeg.
>> [propagated-inputs]: Add python-pycryptodome.
> 
> What do these added dependencies do?

I should have written this in the cover-letter, my bad.
pycryptodome is needed for the hlsative downloader, ffmpeg adds the 
ability to merge video and audio files downloaded separately by 
youtube-dl and removes the following warning:
WARNING: You have requested multiple formats but ffmpeg or avconv are 
not installed. The formats won't be merged.

Have a look in the NixOS derivation for more information on 
dependencies:
https://github.com/NixOS/nixpkgs/blob/86a085cd4690d497c487d5090fabb0bbf093e7a2/pkgs/tools/misc/youtube-dl/default.nix#L33