Check the project time base setting, footage interpretation etc. and whether you use feet instead of frames or SMPTE time.
Ok, I'll go try that now
Ok, I checked the link and I dunno if it's my bad finding skills, but I found no help there so I'll tell you what I have in my Project Settings window and my Composition Settings window.
Time Display Style:
Footage Start Time: Use Media Source
Default Base: 30
Use Feet + Frames: 35mm
Frame Count: Timecode Conversion
Depth: 8 bits per channel
Working Space: None
Blend Colors Using 1.0 Gamma (Unselected)
Match Legacy After Effects QuickTime Gamma Adjustments (Unselected)
Sample Rate: 96.000 kHz
Preset: HDTV 1080 29.97
Width: 1920 px
Height 1080 px
Lock Aspect Ratio (Selected)
Pixel Aspect Ratio: Square Pixels
Frame Rate: 29.97
Drop Fram (Selected)
Start Timecode: 0;00;00;00
Duration: 0;00;05;49 (It then changes to 6:00+ for each second passed 30)
Background Color: Royal Blue.
Hope these details will help you find the solution!
I choose for example 5:49 as the time and it changes to 6:19 whenever the frame rate is below 60!
Also, when I look at the timeline it says 10f, 20f, 01:00f, etc. Please help!
That's because you're not making a 5 minute and 49 second comp. It's 5 seconds and 49 frames. Time is measured in hh:mm:ss:ff (hours, minutes, seconds, frames). You can't make a composition that is 5 seconds and 49 frames long if your frame rate is 30.
If your frame rate is 30 frames per second. 5 seconds, plus 49 frames is going to be 6 seconds and 19 frames. The reason you're seeing the top of the timeline like that is because the compositions you are making are so short, it's displaying in frames.
If you want a comp that is 5 minutes long and 49 seconds, you'll need to tell it to be that long and this time DON'T FORGET to add the 00 frames at the end.