#898 FFmpeg media recording: start/stop issue

[Querino]

both SDL1 and SDL2 do act a bit weird when saving a media file.

• open menu, start recording
• open menu again, recording stops
• now try to record another movie right away, (without closing menu). nothing happens.

which means, if i want to stop a recording and start another one, i have to enter the menu, exit it and enter again.

also, it's not very logical ffmpeg reording stop when we open the menu, whereas audio recordings do not.