Automatically create gif thumbnail from mp4 using ffmpeg

This firebase function uses ffmpeg / fluent-ffmpeg and automatically creates gif thumbnails from mp4 files that are uploaded to Cloud Storage

Functions Code

See file functions/index.js for the gif conversion code.

The dependencies are listed in functions/package.json.

Trigger rules

The function triggers on upload of any file to your Firebase project's default Cloud Storage bucket.

Deploy and test

To deploy and test the sample:

Create a Firebase project on the Firebase Console and visit the Storage tab.
Get the code, for instance using git clone https://github.com/mithatcak/firebase-ffmpeg-gif-thumbnail
Setup the CLI to use your Firebase project using firebase use --add and select your Firebase project
Deploy your project's code using firebase deploy
Go to the Firebase Console Storage tab and upload a mp4 file. After a short time a generated gif with the same name but a thumb_ suffix will be created in the same folder (make sure you refresh the UI to see the new file).

Notes

Take into account that the gif files produced should not exceed the size of the memory of your function.
The thumbnail generation could take a certain amount of time, increase the timeout of your function using the cloud functions webgui so the function can run for a longer time.