Related Articles:
Many people willing to share their audio or video on YouTube. Do you have some favorite audio or video that want to make it as your iPhone ringtone?
If you have already extracted YouTube audio/video, and wondering how to make ringtone, just following this guide of iPhone Ringtone Maker.
Click the icon to open the ringtone maker and drag YouTube video or audio directly to the program for making ringtone.
Drag and drop the slide bar to appoint the start point and end point for your iPhone ringtone length. Alternatively, you can type exact time value into time-setting box. You can choose to preview the whole YouTube audio or video or just the trimmed part.
Tips:
You can enlarge the waveform to make more specific trim.
If it is video, you can preview your video on the bottom of the left side. Click I, there would be a screen to preview the video.

After trimming, click Start button to generate the ringtone. The edited ringtone will be saved on ringtone category of your iTunes.
Notes:
If you tick Export to iPhone option, the created ringtone will be automatically be exported into your iPhone.
If you have not yet download your favorite YouTube video or audio, you can use the free YouTube Downloader to help you to finish the downloading and then start making your own iPhone(include iPhone 3GS) ringtone according to the above instruction.

Convert various audio and video formats to M4R ringtone formats and offer waveform for precise trim and fade in&out effect available, more....
DVD burn software to convert popular video formats including AVI, MOV, WMV, M4V(without DRM protection), TS, TP, TRP, M2TS, FLV, ASF, MOD, etc. to DVD on Mac, more...
DVD Copy Pro for Mac Copy DVD9 and DVD5 movies. Backup DVD movies to 4 ways including DVD disc, DVD folder, DVD media format and ISO file, more...