Muxing vbr audio

I'm looking for a muxing tool that could handle vbr mp2, would enable to specify the beginning and the end of the clip, and file max size (a la bbmpeg). Does anyone know such a tool ? Regards, Fupp.

If you search the forum hard enough... 

If you search the forum hard enough... You would find I've posted many times concerned with this subjuct. Brief: No knowing DVD-Player can play such species back.

I want to use vbr audio for making SVCDs. I gave it a try using MPEG2Cut for the video part, Besplit for the audio part, and muxing with mplex. It works fine on my Pioneer DV-535, but I'm just looking for an easier way to mux. PS : I'm probably stupid (I am :D) but I couldn't find any post from you talking about vbr audio :confused: Cheers, FuPP.

The Philips SVCD specs allows the VBR audio in SVCD. I made some tests and my standalone Philips DVD 723 worked fine, audio always in sinchrony and chapter points were rispected correctly. The same using PowerDVD. VCD doesn't support VBR material (both Video and Audio)

I find this very interesting, but could someone please post a source other than "I know" that says that VBR is legal for SVCD. I looked at a copy of the specs and it says that sound can go from 32 to 384 kbps, but it doesn't say that it can be variable. Maybe I'm wrong, but I would like some hard evidence. For example, I could say "SVCD video can go up to a maxium bit rate of 3500 Kbps", but that's not true. I have often found in the video world that people claim all kinds of things without anything to back them up. Maybe some of you just assumed the specs allowed VBR audio when in reality they do not. I could be wrong about this and I'm certainly willing to admit it, but how about a link to a web page that supports this claim? Secondly, why would anyone want to do VBR? Unless you have multichannel audio, using VBR will not result in that much of a smaller file and it will add all kinds of potential playback problems. If you really need to save space in SVCD, just re-encode your audio or video to a lower bit rate.

From Philips SVCD technical explanation (sl00811.pdf) page 3 : "Two audio streams One extra audio Mpeg stream has been hadded for a second language. The Audio streams are selectable by the user, and VBR coding is used for a more efficient compression." page 6 : "The use of VBR is optional on the disc, but the decoder in the player must support this. Simple pieces of music demand a low bit rate, while complex sound require a higher one. When VBR is used, the average bit rate correspond to the average sound complexity, but at constant bit rate (CBR) the bit rate is set for the most complex piece of sound. A typical gain is 30 to 40 %" Ompg. ------------------------------------------------------ (in french)

Um, I may be a retarded american, but isnt there something else limiting the usefullness of VBR audio too? Wouldn't you need an mpeg2 encoder that can analyze the audio file, so it knows where the audio bitrate bottoms out and it can ramp up the max bitrate of the video, and where the audio spikes so it can lower the max bitrate? It just seems to me that if you could make a 112 abr mp2 and set the video max to say 2644 that the audio could spike up to 384 at the same time the video could be at 2644 resulting in a total of 3028. Again, im prolly just stupid, but seems like it could be a problem to me.