There are a few keyboard shortcuts you can use in the Web App.
You can start and stop the video by pressing the spacebar.
While entering a comment, you can submit your comment by pressing Command+Enter for Mac or Control+Enter for PC and the video will automatically resume.
J for backwards play, K for play or pause, L for forward double speed and then press L a second time for quadruple speed.
If you want to jump ahead frame by frame, you can use the left and right arrow keys.
If you are viewing a clip that has multiple version, press S and it will split the screen so you can compare versions.
Press I to show the metadata information.
To cycle through the comments, hold Control and Shift while using your left andright arrow keys.
Hold R during playback to define a cycle range to repeat.