Vidéos non lues

I found a solution for this a few weeks ago somewhere and it worked for me. I realized the videos don't play on the VM because of the audio settings (and not any video settings).

1. Shut down the VM (in my case Ubuntu 16.04.1).
2. In VirtualBox, click "Settings".
3. Go to the "Audio" section and change the "Audio Controller" from the default to the other available option ("Intel HD Audio" controller was my 2nd option).
4. Start the Virtual Machine and see if this work.

Enabling 3D acceleration in the VM display settings fixed it for me.

Old thread, but in case someone else stumbles across this. I already had the above proposed solutions set on my system. What resolved this for me was going into the VirtualBox VM settings > Network > Advanced and change the Adapter Type to "Paravirtualized Network (virtio-net)." So maybe it's a combination of some/all of these suggestions.

This was so annoying for me as the video would load and buffer but not play.

• Virtualbox Version 6.0.12 r133076 (Qt5.6.2)
• Ubuntu version 19 Dancing Dingo.
• Audio ICH AC97 (default)
• Video no acceleration (default)

[Default audio settings][1] [![enter image description here][1]][1]

[Default display settings][2] [![enter image description here][2]][2] Then I tried the above advice above

• Audio setting changed to HD Audio

This did not fix playback stuck problem.

Then I tried the above advice above

• Video 3D Acceleration was changed to check / enable

This did fix playback stuck problem. Then I reverted the settings to prove it was the proper fix, and for a while it did work without the changes. Then it stopped working again. So there are some side-effects happening.

In the end, it seems the changes are required for Ubuntu 19 but not Ubuntu 18.

Sorry for any confusion.
Thankfully it is now working for Ubuntu 19, Dancing Dingo. Cheers :)