From [here](https://support.google.com/youtube/answer/7631406?hl=en-GB)

| Keyboard shortcut | Function |
| ----------------- | --------
| Spacebar | Play/Pause when the seek bar is selected. Activate a button if a button has focus. |
| Play/Pause Media Key on keyboards | Play/Pause. |
| k | Play/Pause in the player. |
| m | Mute/unmute the video. |
| Stop Media Key on keyboards | Stop. |
| Next Track Media Key on keyboards | Moves to the next track in a playlist. |
| Left/Right arrow on the seek bar | Seek backwards/forwards 5 seconds. |
| j | Seek backwards 10 seconds in player. |
| l | Seek forwards 10 seconds in player. |
| , | While the video is paused, skip to the next frame. |
| . | While the video is paused, go back to the previous frame. |
| > | Speed up the video playback rate. |
| < | Slow down the video playback rate. |
| Home/End on the seek bar | Seek to the beginning/last seconds of the video. |
| Up/Down arrow on the seek bar | Increase/Decrease volume 5%. |
| Numbers 1 to 9 on the seek bar (not on the numeric pad) | Seek from 10% to 90% of the video. |
| Number 0 on the seek bar (not on the numeric pad) | Seek to the beginning of the video. |
| / | Go to the search box. |
| f | Activate full screen. If full screen mode is enabled, activate 'f' again or press Escape to exit full screen mode. |
| c | Activate closed captions and subtitles if available. To hide captions and subtitles, activate 'c' again. |
| Shift+N | Move to the next video (If you're using a playlist, will go to the next video of the playlist. If not using a playlist, it will move to the next YouTube suggested video). |
| Shift+P | Move to the previous video. Note that this shortcut only works when you're using a playlist. |
| i | Open the Miniplayer. |