I'll bet with mpeg to jpeg it doesn't have to re-encode the image, which it's doing with the other formats.
Does Intel still sell the 8080? Because I think they're code-compatible. Might even be pin-compatible.
I have a s.76 Gazelle laptop, and it's been going good for about 4 years now. I rarely use the battery, so it stays plugged in most of the time. It's been good, and the battery remains charged at 100%.
Let's talk about the curious and ingenious DriveSpace, an MS-DOS program promising to double the available disk space.
Maybe post the username and community names?