Some AVI files don't play on iOS based devices
I have a bunch a couple of old television shows that are encoded using Xvid/MP3 in an AVI container. These play fine on my Roku Plex player and the web based Plex player. However, when I try to play these on an iOS based device (iphone/apple tv) the spinning circle shows it trying to load and then it immediately stops and starts the countdown for the next episode. Nothing ever shows up on the screen. I am using the Synology Intel based Plex Server 220.127.116.1109.
Any ideas other than re-encoding all these to some new format?