FFmpeg SDK

This is the repository for the FFmpeg SDK and Content Snap.. It is a community-maintained package to easily allow other snaps use the latest ffmpeg related libraries without any hassel via snapcraft's content interface.

"FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata."

FFmpeg SDK Status

FFmpeg Content Snap Status

Uses

Using this SDK has two parts involved.

Build

While building your app as a snap, you need to add these environment variables in the part that needs the ffmpeg libraries.

build-environment:
  - PKG_CONFIG_PATH: /snap/ffmpeg-2404-sdk/current/usr/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR/pkgconfig${PKG_CONFIG_PATH:+:$PKG_CONFIG_PATH}
  - LD_LIBRARY_PATH: /snap/ffmpeg-2404-sdk/current/usr/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}
  - PATH: /snap/ffmpeg-2404-sdk/current/usr/bin${PATH:+:$PATH}

Runtime

To get the libraries at runtime, you need to connect the ffmpeg content snap to your app snap.

For that you first need to define a plug for ffmpeg in the top level your snapcraft.yaml.

plugs:
  ffmpeg-2404: # name of the plug
    interface: content # interface of snapcraft
    target: ffmpeg-platform # mount point of the content snap
    default-provider: ffmpeg-2404 # the default provider that'll provide this library

Now in the apps part which needs to use the ffmpeg libraries during runtime, you need to add the following environment variables.

apps:
  app:
    environment:
        LD_LIBRARY_PATH: $SNAP/ffmpeg-platform/usr/lib/$CRAFT_ARCH_TRIPLET_BUILD_FOR:$LD_LIBRARY_PATH
        PATH: $SNAP/ffmpeg-platform/usr/bin:$PATH

You can also declare these variables at the top level of your snapcraft.yaml if you want to use them in all the apps. Some snaps that use this ffmpeg-sdk.

• kde-qt6-core22-sdk
• parabolic
• tagger

And many others!

Migrating from core22 to core24

Simply change all the occurances of 2204 to 2404 in your snapcraft.yaml file and you are good to go!

How to contribute to this snap

Thanks for your interest! Below you find instructions to help you contribute to this snap.

The general workflow is to submit pull requests that merges your changes into the 2404 branch here on GitHub. Once the pull request has been merged, a GitHub action will automatically build the snap and publish it to the candidate channel in the Snap Store. Once the snap has been tested thoroughly, we promote it to the stable channel so all our users get it!

Initial setup

If this is your first time contributing to this snap, you first need to set up your own fork of this repository.

1. Fork the repository into your own GitHub namespace.

2. Clone your fork, so that you have it on your local computer.

3. Configure your local repo. To make things a bit more intuitive, we will rename your fork's remote to myfork, and add the snapcrafters repo as snapcrafters.

   git remote rename origin myfork
   git remote add snapcrafters https://github.com/snapcrafters/signal-desktop.git
   git fetch --all

Submitting changes in a pull request

Once you're all setup for contributing, keep in mind that you want the git information to be all up-to-date. So if you haven't "fetched" all changes in a while, start with that:

git fetch --all -p

Now that your git metadata has been updated you are ready to create a bugfix branch, make your changes, and open a pull request.

1. All pull requests should go to the stable branch so create your branch as a copy of the stable branch:

   git checkout -b my-bugfix-branch snapcrafters/candidate

2. Make your desired changes and build a snap locally for testing:

   snapcraft --use-lxd

3. After you are happy with your changes, commit them and push them to your fork so they are available on GitHub:

   git commit -a
   git push -u myfork my-bugfix-branch

4. Then, open up a pull request from your my-bugfix-branch to the snapcrafters/candidate branch.

5. Once you've opened the pull request, it will automatically trigger the build-test action that will launch a build of the snap. You can watch the progress of the snap build from your pull request (Show all checks -> Details). Once the snap build has completed, you can find the built snap (to test with) under "Artifacts".

6. Someone from the team will review the open pull request and either merge it or start a discussion with you with additional changes or clarification needed.

7. Once the pull request has been merged into the stable branch, a GitHub action will rebuild the snap using your changes and publish it to the Snap Store into the candidate channel. After sufficient testing of the snap from the candidate channel, one of the maintainers or administrators will promote the snap to the stable branch in the Snap Store.

Maintainers

• @soumyaDghosh
• @merlijn-sebrechts
• @jnsgruk

License

• The licenses of FFmpeg are GPL-2.0, GPL-3.0, LGPL-2.1, MIT and some other licenses. You can find more about the licenses in the FFmpeg source code. The license of this repository is MIT.