Jesterware DVD to iPod: Avoid audio/video sync issues to produce perfect videos or movies

Avoid Audio/Video Sync Issues

Due to the complex nature and different video standards around the world, our software 99.9% of the time will produce a perfect video file, with the audio in sync with the picture.

If in the rare case, you find your video file is out of sync with the audio you can hear, you can do the following.

Let us explain firstly, what has probably caused this.

NTSC has two standards in relation to the number of frames per second in video footage.
23.976 frames per second is often used at the actual native recording of the film. This is sometimes referred to as NTSC Film.
29.97 frames per second is often used during the mastering as this is the true NTSC standard.

However it is within the DVD compliance specification that a DVD can switch frame rate from 24000/1001 (23.976) to 30000/`1001 (29.97) throughout the film. This usually happens during the DVD mastering process when sections of video with different framerates are spliced together.

It is impossible to establish if the DVD you are ripping has this mixture of frame-rates until the actual encoding process takes place and the frames are analyzed.

So what can you do.

1. Alter the Frame Rate within the program from the detected 23.976 to 29.97 or vice versa, from 29.97 to 29.976
2. Choose the Inverse Telecine option from the Adv. Video Settings

If these don't help, you can also

1. Turn on Include Duplicate Frames in the Video Settings options
2. Turn on Don't Skip Frames in the Video Settings options.

NOTE: Don't just turn these options on as a default, as they may actually make the problem worse. Each DVD is different.

PAL is used in Europe and some asian countries and use 25 frames per second

NTSC is used in the USA / Canada and other countries and uses either 23.976 (Film) or 29.97 frames per second.