# How do I adjust the resolution and playback speed of course videos?

Since 2021, all course videos have been available through a solution called **Marsha Video**, developed by France Université Numérique.


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### Choosing Your Video Resolution

Marsha Video automatically adjusts the video resolution (adaptive bitrate) based on two factors:

* **Your Bandwidth:** The player detects the available bitrate of your connection and plays the video in the most suitable resolution.
* **Player Size:** If the video is played in windowed mode within the course, it will display at 480p. However, if you play it in full screen on a strong network, it will display at its maximum resolution.


 ![Adaptive bitrate](https://support.fun-edu.fr/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzE0NGZkNTM4LTgwYjAtNDI0NS05Y2U0LTEyOGExMWRkNjI4Mi83MzRhMWQyMC01ZDU5LTQ0NWUtYjM5ZC1hYmE0NzkwOTg5ODQvbWFyc2hhLXZvZC1hZGFwdGl2ZS1iaXRyYXRlLmdpZiIsInR5cGUiOiJhdHRhY2htZW50IiwiaWF0IjoxNzg5ODk3NTAwLCJleHAiOjE3ODk5ODM5MDB9.dQfB3l7hkRX5G9uE98k0IXjpEjq9MDXIjZMq2BEKDyE)

You can, of course, change the resolution manually using the jog wheel:

 ![Resolution](https://support.fun-edu.fr/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzE0NGZkNTM4LTgwYjAtNDI0NS05Y2U0LTEyOGExMWRkNjI4Mi85OTgzMGYzZi1kNDU2LTRiZDUtYWJhMS00ZmY1ZmViODU1YjAvcmVzb2x1dGlvbl9jaG9peC5wbmciLCJ0eXBlIjoiYXR0YWNobWVudCIsImlhdCI6MTc4OTg5NzUwMCwiZXhwIjoxNzg5OTgzOTAwfQ.YXNvZlh4P2Cze41LkV50MAaWPFzvjmfEWQTha1NsRgQ)

Some variations in the automatic (auto) resolution of the video may also be due to the characteristics of your screen.


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### Changing playback speed

To slow down the video and sound in a video, you can use the dedicated function (1x by default).

 ![](https://support.fun-edu.fr/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzE0NGZkNTM4LTgwYjAtNDI0NS05Y2U0LTEyOGExMWRkNjI4Mi82OWVmMTlhMC01ODRjLTRhY2ItOTI0Ny03ZWUwMWM2NmU5NmIvaW1hZ2UiLCJ0eXBlIjoiYXR0YWNobWVudCIsImlhdCI6MTc4OTg5NzUwMCwiZXhwIjoxNzg5OTgzOTAwfQ.kP-rv2W-74tLbEWRvTx3FpBMUuuycHtPy5snlSW_ZAE)

You can select the speed of your choice directly or click on the dedicated button several times to go through the speeds and select the one that suits you best:

 ![Speed](https://support.fun-edu.fr/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzE0NGZkNTM4LTgwYjAtNDI0NS05Y2U0LTEyOGExMWRkNjI4Mi9mZDA2NDUyMC1jYzlkLTQ4MjEtYjRjOC04YTVkNDA5NjEyNzMvbWFyc2hhLXNwZWVkLmdpZiIsInR5cGUiOiJhdHRhY2htZW50IiwiaWF0IjoxNzg5ODk3NTAwLCJleHAiOjE3ODk5ODM5MDB9.uF2lQEWYkdPfhz0qcXmerbyiY51UIOlbE_kl6XmUQRg)


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**Related articles :**

* [How do I view subtitles and transcripts for videos?](/doc/how-do-i-display-subtitles-and-transcripts-for-videos-46sKdObIKe)
* [How do I download videos and course materials?](/doc/how-do-i-download-videos-and-course-materials-TvBkhzGBoE)
* [How do I move a video window (Picture-in-Picture mode)?](/doc/how-do-i-move-the-video-window-picture-in-picture-mode-kfoOEsZJXP)