To crop the video, we must apply some video filters. So if the MPEG looks progressive (not interlaced) and obvious desync appears (and gets worse and worse), use Video->Frame Rate and set it to 23.976.įor PAL MPEG, there is no problem, it is always 25 fps.Ĭropping is useful in removing the black borders along the top and bottom of the video in a widescreen format. It means that Avidemux cannot tell the difference between FILM and NSTC. mpeg2dec does not do the telecine on FILM movies (and that's better that way). So the MPEG header always says 29.96 as it will always be the final format.Īvidemux uses mpeg2dec to decode MPEG streams (with a little patch). In the first case, the DVD player does an operation to convert it on the fly to NSTC format (telecine). Some others are coded as 29.96 (NSTC), soap for example. Some DVDs are coded as 23.976 aka FILM (most movies actually). Said otherwise, without the index, Avidemux cannot handle MPEG files. This file allows Avidemux to random seek and stay accurate. An MPEG stream index is a plain text file containing a description of the MPEG and the location of frames throughout the stream. It has been designed to read an MPEG stream index. Note: Avidemux does not read MPEG streams. Once the indexing is over, the index will be automatically loaded. If there is less than two audio tracks, you won't be asked. You will be able to change audio track later on if you selected the wrong default audio track. The next dialog is the default audio track selection, that looks like this You will now be presented with a dialog box asking if you would like to index the MPEG, say yes. Load this stream.dump file into Avidemux by either clicking the "Open" folder icon in the toolbar, or going File->Open. This is an Avidemux compatible VOB file in MPEG format with various audio streams. This will create a file in your working directory called stream.dump. It is supported but without sync correction. 
vdr is a transport stream containing video and audio(s).vob is a DVD systems stream which contains video, audio and additional information, it is a also a program stream.
mpg is a program stream containing the multiplexed video and audio streams. a file which only contains a so called elementary video stream, without any audio. The difference between Avidemux and these other projects is that Avidemux allows you to edit the file before encoding it, and to do a visual check of what you are doing. There are several projects available online which allow you to convert DVD's to MPEG-4 AVI, using tools such as the popular MEncoder. This tutorial has been broken down into 6 chapters which explain the process of converting an MPEG-1 or MPEG-2 DVD file into an MPEG-4 video wrapped in AVI file, which is often incorrectly called "DivX" (see the DivX chapter for more info).
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