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Just a suggestion: get used in having ELEMENTARY streams, that is: NOT a MPG, but a MPEG video (MPV, that is a M2V if a it is MPEG-2 for a DVD) and an audio (DVD accepts either: Mpeg audio [MP2], Dolby Digital audio [AC3], Uncompresssed audio [WAV]).
The 'authoring' application I use (IFOEdit and DVD Lab) do not want mpegs, but elementary streams (DVD Lab de-multiplexes the mpg input, if required).
More: the audio type should be decided BEFORE encoding. Unless you use an AVI which already has AC3 5+1 (384 kbps), the AVI files have MP3 streams (usually 128 kbps, often time less , raraly with a highe bitrate).
Threfore, unless your AC3 already has an AC3 streams (and VirtualDubMod tells you if it is 384 kbps or even 448 kbps), you save 100% the sound quality if youi encode tnto a MP2 22k kbps or an AC3 192 kbps.
When you encode to MPEG-2, the encoders ask you which bitrate it must apply. It can go from 2500 kbps to 8500 kbps. Which is the 'ideal' bitrate?
It is calculated by a bitrate Calculator (I use the freeware DVTool 0.53). You insert the movie's length (e.g. 123'), the audio type (e.g. MP2 224 kbps or AC3 192 kbps or the bitate of your AVI's audio, if it had AC3 sound) and the software outputs you the 'ideal' bitrate.
For instance: a movie 122' long can be encoded to mpeg-2 with these 'ideal bitrates':
a) 4575 kbps if the DVD will have AC3 sound 448 kbps;
b) 4639 kbps if the DVD will have AC3 sound 384 kbps;
c) 4799 kbps if the DVD will have MP2 sound 224 kbps;
d) 4831 kbps if the DVD will have AC3 sound 192 kbps (the software has 'MP3 optimal', but it is for an AC3 sound, which you can prepare with FFMPEG GUI).
99% of the times you'll use c) or d) (no way to make a 5+1 stream from an 1+1 MP3 stream).
Therefore:
1) determine the audio type;
2) calculate the 'ideal' bitrate to fit a 4489 MB DVD by M2V+audio;
3) encode the M2V;
4) author the DVD (M2V + audio = DVD).
All clear?
This message has been edited since posting. Last time this message was edited on 25. May 2006 @ 05:09
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