audio offset?

[tuzman]

You mention the use of convertstream, can you either post a link or 
send it direct, the versions I see online doing a google search for 
convertstream say that it splits a TY stream into component audio and 
video? or can you use convertstream to get a single mpg?

-Mike


--- In ExtractStream@y..., "t_tringle" <t_tringle@h...> wrote:
> --- In ExtractStream@y..., "J. Scott Dorr" <merlin@f...> wrote:
> > Also, while playing with TMPGenc, I'm supposed to put in the 
audio 
> offset that
> > splitstream gave me. I don't know if there was something wrong 
> with my
> > stream, or what, but this was the first little bit of the input I 
> got from
> > splitstream:
> > 
> > E:\tivo> e:\utils\splitstream b2b-2002.ty b2b-2001.m2a b2b-
2001.m2v
> > badblocks1.ty
> > 
> > Bad chunk (header?) 0, skipping
> > Warning: large sequence mismatch. Expecting 0:0, got 
> 15d:6cc0423e in chunk 1
> > record 0 last audio time 00:00:00.0 last video time 00:00:00.0
> > estimated audio delay from first video -287.300000 ms
> > estimated audio delay from earliest video -220.555556 ms
> > Warning: found even earlier Video frame, add 100.100000 to min 
> audio delay
> > chunk 1
> > Warning: found even earlier Video frame, add 66.733333 to min 
> audio delay
> > chunk 1
> > Warning: second byte in chunk 4095 is non-zero 1e:ff
> > 
> > So... do I use the audio delay from first video? Or from earliest 
> video?
> > And what about the Warnings that say I should add xxx.xxxxxx to 
min
> > audio delay?
> > 
> > - scott
> 
> Scott,
> 
> Not sure if this helps, but when I was first learning about 
> extractstream and all of the fun involved with getting a stream off 
> the tivo and onto a pc I learned one thing that has made my audio 
> synch problems go away.
> 
> first a few things. I use "sendstream" to get the ty stream onto my 
> PC using NC for windows 2000. I can send you links to the documents 
I 
> used to gather all of the commands necessary to do this.
> 
> After getting the complete stream over to my pc I 
use "convertstream" 
> to turn it into an mpg file. !Note, this mpg file has an audio 
> offset, if you use splitstream it does give you an offset but i 
have 
> found it to be faulty most of the time, or at least I have never 
> gotten it to work the same way twice.
> 
> What I do next, is that I simply use DVD2AVI to create a DV2 
project 
> file, at the same time it creates an MPA file. Now here is the good 
> part, I don't think I have seen anybody mention this on this forum 
or 
> anywhere else that I have seen, but at this point the name of the 
mpa 
> file contains the audio offset from the video, you will see a 
number 
> or a negative number in the name of this file. I have done this a 
few 
> times now and every time, it has been perfect. I then use winamp to 
> create a 48bit/192Khz wave file of the mpa, and use that file for 
any 
> encoding I do.
> 
> You can use the offset in a few different ways. After using 
> VFAPIConv.exe to create an avi that programs like TMPEG, or avidub 
> can use, you can.
> 
> 1. Use avidub to create an avi file (using the huffyuv lossless 
> codec) that you can then encode, Just make sure you set "Audio - 
> Interleaving" in the menu. In the dialog that shows up there is a 
> place for offset or something to that effect. Place the exact 
number 
> from the mpa that dvd2avi created in that spot.
> 
> 2. In TMPEG, you simply put the offset in the appropriate spot, 
> however the offset has to be entered in the opposite range, meaning 
> if you have an offset of -66 listed in the dvd2avi conversion audio 
> file, then you need to tell tmpeg to use an offset of "66" as a 
> positive value. This will correct the audio.
> 
> Hope this helps, Roger Merchberger has a great web page that 
explains 
> alot, but he uses splitstream and as I said I found that solution 
to 
> not work for me alot of the time. For me sendstream has a lot less 
> problems than extractstream or any other program I have tried, 
> extracting the video with. It has almost never gotten bad blocks or 
> bad chunks etc.
> 
> Hope this helps and feel free to e-mail me if you have any othe 
> questions, It may take a little bit for me to respond as most of my 
> systems are torn down right now while I rebuild my video 
> editing/capture/tivorip system.
> 
> Good Luck
> 
> Tim