Expert: Andre Hickman - 2/18/2009

Question
Hello!

I used Ultra Video Joiner to join four split mp4 video's into one. Due to the fact that the video's resolution is very low (240x192), the program offers some options to change sth, and I'd like you to tell me that shall I do.

There is an option to adjust output quality (highest video 2500 kbps)
Another one is the frame rate (highest 30 fps, def: 23.976)
And another one of the width and height of the video.

Is it possible to affect the primary resolution? I don't want to see any pixels. Can this really change my video file?

Thank you very much

The program is here
http://www.mp4joiner.com/mp4joiner/mp4-joiner.exe

License Name : FiGHTiNG FoR FuN 2oo8
License Code : 60B2B3D6

Answer
I really can't give you that information directly, because I don't use that software, and don't know what compression codecs it uses.  I can give you some general information that may be useful to you though.

1) Standard television definition (NTSC) is 720x486, meaning that your video is about 1/3 the size of true television resolution.  

2)Standard video runs at 30fps (or actually 29.97)...24fps (23.976) is actually the speed of movie film.  It is not a bad rate to use, but chances are you will have that "classic film look"

3) you can stretch pixels all you want to make it larger, but that is not going to give the output any more true resolution.  The fact of the matter is the software doesn't have any smaller information recorded in the video to give you any more clarity of what was happening in between the pixels, so it just blurs infomation across them.  You will still see pixelation.  It would be like taking a small 32x32 pixel icon from windows and trying to blow it up to print quality.  Regardless of what the software says it can do, there is no magic way for the software to figure out details from nothing.  It's easy to scale size down, but scaling size up is next to impossible (I guess unless you work for the CIA...lol)

The best thing to do for the bit rate quality is to try different renders, and see how quality is compromised with file size...then find a happy medium.

Hope this helps.

Cheers,
Andre