I'm delivering some video content to a client who will be using it in a PowerPoint presentation and because I'm on a Mac and they're on Windows, the only format I can deliver which is accepted by PowerPoint is MPEG-2.
When exporting using H.264, I normally set the bitrate to around 5mbps. Doing this with MPEG-2 gets some really horrible results. To get anywhere close to the H.264 quality I need to set the MPEG-2 bitrates to about 15mbps. This obviously generates a pretty large file.
So my question... why does H.264 at 5mbps look so much better than mpeg-2 at 5mbps? For this video I can get a great looking H.264 file for less than 100mb but to get an MPEG-2 to look as good the file size is approximately 400mb.