I have the latest archlinuxarm installed on an RP3B+ with LXDE gui. I also installed vlc and alsa-utils. The Pi has an mpeg2 licence.
When I try to play a m4v video with vlc the video is choppy and not acceptable. I know it's not the hardware because I can do the same thing on the same RP3B+ with Raspbian buster and the video is great.
So I'm missing something that needs to be installed. Is there a guide to what is needed on archlinuxarm to make the video playback good? I'm using archlinuxarm as a learning tool on how all this is put together. Installing the default raspbian works but I'd like to know what it takes to really make it work.