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.