CS3 H264 Export Issues

Question

I have got an Issue with exported videos through Premiere Pro CS3. I know I am using an old version but I felt no need to upgrade.
I am facing an issue I haven't faced before. I am exporting a video (no footage, just one music track with still images with fades and effects); when I play the video back in all media players, I get strange play back issues. The preview before export plays fine, so it is definitely after the export. The first time I exported the video, it would play find up until a certain point, the video would seem to freeze but the audio contiunes. When I skip through the video, the sync issues become worse. I though if I just played through the who video with no skipping, maybe it would be fine. But it would always freeze at a certain point. I thn exported the video again, this time it was 1080p. I had the same issue but not it was even worse. The video would freeze much earlier in the video. I though possibly I was having issues with playback on my computer, if I uploaded the video to youtube, it would playback properly. There are still issues with playback on youtube, the first 3 minutes seem to be cut off, and at the end of the video, the video would finish, but there would be another 3 or 4 minutes left to allow the music track to end. I am getting audio sync problems but not in the tradition sense, where maybe they are playing at different speeds. The problems seem to be much more complex and the video just freezes at certain point. It;s all very confusing and hard to explain, and I have found no help. I am thinking maybe it's codec problems, but this is the first I have encountered it.
Premiere Export Settings:
Both video's are MP4 exported with H264 codec
First Try export settings:
1280x720
Data Rate:1778 kbps
Total bit rate: 2095 kbps
bit rate: 317 kbps
audio sample rate: 48khz
Second try
1920x1080
Data rate: 4452 kbps
Total bitrate: 4642 kbps
bit rate: 189 kbps
Audio sample rate: 48khz
System:
Windows 8.1 64 bit
6gig ram
The timeline wasn't pre rendered, but I have never done that and never faced problems before.
Here's the uploaded youtube video of the first export:
Leeds Reunion 2015 Mix - YouTube
As you can see, the tracks do not match up with the songs, if you skip to 41:06, the video starts it's outtro, but there is about 4 minutes left to allow the audio track to finish.

Answer 1

For the jerkiness go to your preferences and change the live draw to delayed, or if that doesn't help, maybe never.  The place to go is Edit > Preferences > General.
When you try to past from CS3 to CS5 do you have both open in CS5?  Might sound a dumb question but if you have one open in CS3 and one in CS5 it isn't going to work, so even if you have a document you want to keep in CS3 for the purposes of copying just open it in CS5, it wil convert to a CS5 document and you will be able to copy and paste between them.
One last tip, when converting docs to CS5 from CS3, particularly larger ones, there have been quite a few reports of instability, sometimes leading to corruption, but mind you we only see the problems on this forum.  To prevent this happening the best route is to export from CS3 to inx format and open that in CS5.  YOu can do that automatically with whole folders (and sub-folders) of files with the batch convertor script that is my latest favourite, it is made by Peter Kahrel and is free, you'll find it here.  With that you can use it in CS3 to convert a whole batch to inx, then use it in CS5 to convert those inx files to CS5 indd.  Super handy, really fast, and great for mass exports too.