Can I convert 1920-1080 to 1280- 720 (and 29,97 fps to 50) and if so, how?
Coz the 1920-1080 clips dont come out nice.
Next time I'll shoot everything with 1 camera...
The resolution is no big deal. A simple check of Scale to Frame Size will handle it. Rather you're issue will be trying to use ATSC footage (29.97) for a PAL project (50). It just won't look as good as the PAL footage. It may be better not to use it at all.
If what you want to do is mix 1920X1080 clips with 1280X720 clips, I suggest that you create a sequence by dropping a 1280X720 clip on the "New Item" button to create the new sequence.
To quote John Smith:
Please NOTE that the PPro CS6 screen may look a bit different (I use CS5)
For CS5 and later, the easy way to insure that your video and your project match
See 2nd post for picture of NEW ITEM process http://forums.adobe.com/thread/872666
-and a FAQ on sequence setting http://forums.adobe.com/message/3804341
You can then drop the 1920X1080 clips on that timeline. You can choose to do as Jim suggests and set "Scale to Frame Size" so that your video fits automatically, or you may choose to use the Scale parameter in the Motion effect to scale the video. The second method allows you to choose the best part of the frame to show if that turns out to be useful.
Many people refer to 29.97 as 60i and it is possible that when you wrote 50 up above, you meant 50i which is more commonly called 25. So basically, your 29.97 footage would be slowed down from around 30 to 25. You will have to speed it up 20% with Time Remapping, or just the Speed/Duration parameters. It would be better to do that in a separate sequence and then use that sequence as a clip in your main timeline.
If you actually meant 25, then you are going to have to slow down the 29.97 considerably. It might be better to interpret the 50 to 25 and add the 29.97 as I said above.
If this footage is interlaced, I suggest that you deinterlace it if one is Upper Field First and the other is Lower Field First. Those two don't play well together.
Does this make sense?
Not really. It's kind of a waste of effort. From a resolution standpoint, you can use the original 1080 clips in a 720 sequence without issue. Like I said, a simple check of Scale to Frame Size handles it.
Jim is correct. If you are just going to use the clips as is, only smaller, then Scale to Frame Size makes the most sense. Only if you want to choose the best 1280X720 out of the 1920X1080 frame should you bother to manually set the scale using Motion.
Exporting the clip and reimporting it merely causes a generation of quality loss that is unnecessary.
Open a 1280X720 sequence, drop the 1920X1080 clip on it, right click on it to set the Scale to Frame Size and that's it. Start editing. Or use the scale parameter of the Motion effect instead. Either way, avoid exporting and reimporting whenever possible.