Recording Populous
From Populous Wiki
People record populous games to demonstrate tactics and how they play. Many of these videos can be found at youtube. [1]
Recording Populous
The most common way of recording populous is by using software called Fraps. Fraps however can only work using the Direct3D Acceleration versions of populous. (D3DPopTB.exe and D3DPopTBUW.exe)
With fraps, the resulting file format is uncompressed avi, which would need to be encoded into a smaller format (.wmv for example) using a separate piece of software. This will dramatically reduce the file size (over 100 times smaller), resulting in a file which is ideal for uploading to a web server. For further editing effects, windows movie maker or a similar piece of software can then be used.
However, recording full games would require a lot of space. In this case, using screenshots or small clips to make a video would be more appropriate.
If you are the host make sure your not slowing the game down causing the other players to lag.