MPG to MPG Converstion

[unkyjoe]

I am a long time lurker and a first time poster.

Here is the deal. I have extracted a video of 1hr in length from my Tivo, it was recorded at 480x480 and the file size is roughly 1.6gb in size. I extract them as .m2v and .m2a files and multiplex them back together with Tmpeg with no problems. The audio is in perfect sync with video and the PQ is very good. Now the hard part. I want to edit out the commercials and squeeze the video down to fit on 1 cdr using vbr in SVCD format.

There are several site on converting this back to a FAKE AVI file and then using Virtual Dub to edit and then using Tmpeg to re-encode. I am not a big fan of Tmpeg and would prefer to use Adobe Premier 6.5 but cant seem to find a guide on using it with DVD2AVI and then using Premier to edit out the commercials and re-encode. Help!

My new recordings are being done in SVCD format on the Tivo so the new shows are no problem at all, I just have about 10 episodes recrded in the other format that need to be shrunk down.

I am also looking for a program to convert the m2a file to a wav file, I read that winamp can do it, but for the life of me I cant figure out how!

Thanks in advance!
Unkyjoe

[unkyjoe]

Okay, I think I got this figured out, I will try this experiment tonight and let you know. Here is what I have done so far.

1: Exported the video from my Tivo as seperate m2v and m2a files, and then multiplexed them together using tmpeg.

3: Ran mpg file through DVD2AVI and then through VFAPI Conv

4: Converted extracted mpa file to wave using winamp

5: Opened the fake avi and wav in Virtual Dub and created my edit points, I did this in Direc Stream copy mode and saved the fake AVI's as #1 #2 etc.

6: Opened the fake AVI files in Premier 6.5 and then told it to create a SVCD using VBR with min set at 300, avg set at 2320 and max set at 2520. It is taking about 40 minutes to encode 6 minutes of video, I will check the results and let you know.

I will be writing a guide if this works for those of us using Premier.

[TurboRunner]

Doesn't Adobe Premiere 6.5 and Virtual Dub read Mpg files?

[unkyjoe]

Adobe does, but editing the thing is a nightmare, it jumps all over the place, and frame accurate editing is nearly impossible. I dont think VirtualDub will open an MPG but I may be worng, I go through the FrameServe so I can get frame accurate edits to get rid of the commercials.

I finished the first video in about 45 minutes for 7 minutes of video on a pentium 3 500mhz processor with 256mb of ram. I am now doing the same thing with TMPEG to see how long it takes.

[paulgab]

Why not load it (your MPEG2) again in TMPG. Under Advance, Source Range, Cut Editing to cut out the commercials. Then re-encode it as SVCD. Well, not sure of the effect on the quality though..

[jeex]

actually. i believe if you have the mpeg2 codec installed, you can use mpeg tools within tmpgenc (file, mpeg tools).. use the merge & cut feature to have it output the actual show, and then merge them together.. and it will retain the original quality the tivo had it..

[unkyjoe]

One problem though, the orig mpg is too large, it was recorded at the higher bitrate.

If you have ever used the mpg tools and tried to manually edit out commercials with it, it is not frame acurate, and very slow.

Since I had to re-encode to SVCD format, I went ahead and frameserved with VirtualDub to edit the commercials.

Now those that I record in SVCD format from the tivo I will simply use mpg tools and edit out the commercials.

BTW I used premiers encoder and Tmpeg's I got the same quality SVCD but Premier took only 42 minutes to encode 6-7 minutes of video whereas Tmpeg took a little over an hour for the same.

P.S. What would be the best rate to capture 42-44 minutes of video using VBR to make a single disc SVCD my 2520-2320-300 setting leaves them a little too long! Arghhhhh

[0 kewl]

http://www.vcdhelp.com/calc.htm

[unkyjoe]

Got it!

Used the method listed above in my earlier post.

Took about 3.5 hrs to re-encode with Premier 6.5, I used the bitrate calculator and the finished product came out right at 801mb for 43 min of video. Perfect Fit! Quality is very good! I hope this helps.

If needed I can write up a quide on using this method!

Bye for now!