XnView Software

in latest xnview classic how do I change the preferred MPEG1 decoder.?

thanks

all other formats are apparently ok and showing video. I've tried downgrading a few point versions back but that didnt help.
Windows Media Player Classic is showing video just fine.

As an example here is media info for one of the video files not showing up correctly

ID : 224 (0xE0)
Format : MPEG ...

There doesn't seem to be a button for replace all if there is more than one identical file and I have to do Replace for each which can get tedious.
Is it possible to do Replace All or can this feature be implemented please.

I have resized some videos with Handbrake and they look normal in VLC/Windows media player. The correct ratio of 16:9 is displayed.
However in xnview classic they appear stretched out with 4:3. I don't see any options of fixing this.
Can anyone suggest how correct ratio can be (auto) selected.

PS ...

Hello, I am running the latest version of xnview classic. It seems that I am unable to rename mp4 files while they are open. I tried running xnview as an admin but that doesn't help. All other formats are not affected. This unfortunately makes program almost unusuable :(
Does anyone have any ...