Please post your jpg. How are you getting the size of your JPG??? Images import at their pixel dimensions. PPI or DPI or whatever you call it does not translate to the web or the video.
Look this :
1) Step : Im want to make some efects whit text...like this : http://www.youtube.com/watch?v=WZW8kDQWQ5I
2)Im need some ice_normal jpg and ice_deafuse jpg in his video when he import his picture they are 1200x720
but when im import my download picture is 300x200 or 250x100 ....
but when im import that smae picture in new composition resolution is 300x200 : Just like some cuting in Adobe Affter Effects CC
Cyting to lower resolution how im can fix taht than when im import imgae of 720x480 ...or 1200x720 in my case im can save the resolution on 1200x720 and not lowe then that
The image you posted is
The same image size is reported in Photoshop... This has nothing do do with After Effects and everything to do with the image you are trying to import.
Where did you get the image? It looks like it was a download from a thumbnail, probably on the Video Copilot site. That is your problem. You have to find an image that is big enough to fill up your comp window... Simple as that.
If you go to Video Copilot you can watch the tutorial and download the project file. Inside the project file you'll find both images used in the tutorial. They are the right size.