We're aware that many videos display a "Transcoding in progress" message. Most of these should still play, but will not be available in all resolutions. If a video is not playing or has no sound, save it to "Watch later".

The underlying issue was permanently resolved, but it will take a few hours for all the resolutions to be ready and for the message to go away. We also added one more server to help catch up, bringing the total to 4 maxed out servers for this task.