Editing MPEG2 streams

[willieb9000]

Hey Daniel. Here is what I do to get around the problem and still get 
my NBC shows off the tivo. It is a pain, but it works. I use tyconvert 
like usual, but name your file NBCshow1.mpg (the "1" is the important 
part -- the name doesn't matter). When it dies on an NBC commercial, 
it will print out in the log what chunk it started dying on. 

First, rename the mpg field of tyconvert to be NBCshow2.mpg. Find a 
hex calculator online. I used this one 
http://www.cpinternet.com/~kjackson/duluth/ndlhcalc.html
If youuse IE, you can save it as a complete webpage and just open it 
on your local when you need to. Take the first hex number tyconvert 
gives you that it dies on and put it in the calculator and push the 
DEC button to convert to decimal. Then in the "Skip X number of 
chunks" option on tyconvert enter that decimal number plus about 50. 
Click convert. If it works fine then abort and try lower numbers until 
it dies instantly. If it dies instantly try higher numbers. Keep 
aborting and trying different numbers until you can isolate the place 
where one number dies, but the next number works. (For example try the 
DEC number (we'll use 2300) + 50, or 2350 (dies instantly); then try 
2370 (works fine)so abort; then try 2360 (dies instantly); then 2361 
(dies instantly); then try 2362 (dies but takes a second longer); then 
2363 works fine. 2363 is your magic number. Let is keep going, saving 
this file as NBCshow2.mpg until it hits the next NBC promo and dies. 
Repeat, naming it NBCshow3.mpg until it makes it to the end. You will 
not miss any of your show because it only dies on commercials. The 
result is about 5 mpg pieces that make up the entire show. I encode to 
divx so I then join the avis in nandub make the show whole again. If 
you keep them in mpg format, just load them into the playlist in order 
and as it plays you won't know it is split. If you want to go to SVCD 
you'll have to find some way to rejoin the MPGs -- i know there are 
programs out there to do this (I think maybe even TMPGenc does it?). 
Hope this helps -- Really It doesn't take that long even thogh it 
sounds a little involved. 

Willie

--- In ExtractStream@y..., "Daniel" <junior15@m...> wrote:
> Has anybody found a good way to get an mpg file from an NBC show? 
I've
> got a couple episodes of West Wing that I can't get to convert with 
tyc
> or tyconvert. I'm currently using sendstream to extract the ty 
streams.
> I've used extractstream in the past and had similar results. Using 
tyc,
> the conversion gets about 400mb into the file, then dies. Using
> tyconvert, it gets to about 19 minutes, then dies.
> 
> So far, most of the shows that I have seen this problem on are on 
NBC
> (have had a problem on a few other shows, but mostly NBC shows).
> 
> 
> Any help would be appreciated.
> 
> 
> Daniel
> 
> -----Original Message-----
> From: Roger Merchberger [mailto:zmerch7@y...] 
> Sent: Wednesday, January 23, 2002 11:58 PM
> To: ExtractStream@y...
> Subject: RE: [ExtractStream] Editing MPEG2 streams
> 
> {SNIP}
> 
> Was the stream you snagged an NBC stream? NBC owns a goodly chunk of
> Tivo, and those persnickety little "thumbs up to record this show" 
icons
> during the NBC commercials can cause Extractstream some serious
> heartburn...
> 
> {SNIP}