You can use the render turnable under the Capture menu.

Pressing NEXT an explorer popups asking for a folder for mp4 file location, you need to select a folder and to assign a name.

Turntable on Render room
Another way -once the project is saved- is to switch to Render room.
Select the folder where the sequence or mp4 will be saved.

On Tool Options press Settings:

Set ” Render Frame Sequence” in the Render settings panel if you need frames sequence: Render frames sequence rotating around object or along camera shortcuts sequence.
Next on the upper right corner of viewport select Camera > Rotate around Object bounding box

Once you have everything setup just click on “Render” and the sequence files will be saved.
Store alpha channel
With Store Alpha Channel selected, your images will be automatically saved as TGA files with the alpha channel. Also select save lossless images just to be safe.
Custom size is for positioning of the area to be rendered if you choose to use custom size. The yellow box will appear once you start to adjusting the size of the box.
Testing
Side Note: I was just choosing 1 rays per frame to render as I was testing.
Of course choose the amount you need.
- 360 frames will give you a compete turntable circle.
- Use Show folder to assign folder movie location.
3DC anti-aliasing is so so when rendering a turntable but since it is a moving model should be ok but you will have to be the final judge of that.
I you like to render a “realtime view turntable” when do pixelpainting, just turn off AA, set light scattering to zero, amount of rays = 1, AO = 0.
You will get the same effect as in paint room except shadows.