Mpeg wont convert fully

J

Jola

New member
Hi, me again.

I have an mpg movie of 1.4gb.
I've processed it in DVDLab and de-multiplexed in TmpgEnc but with either program only half the video file converts and only about 20 minutes of the audio converts (the film is about 1hour 50mins)

I've searched for an answer on how sort it out but cannot find anywhere.

Any suggestions?

Thx
Jola
 
ChickenMan

ChickenMan

1
Sounds like a problem with the MPEG file. How was the 1.4gb mpg file in the first place, is it from joined 700meg files? If so, then there lies the problem if it was simply not joined properly.
 
J

Jola

New member
Dont know, I got it in one piece. One thing I forgot to mention, if it helps, is that the file seemed to play ok in WMP although I just checked it by jumping through the movie to check sync and that it was complete.
If it was a joined mpeg is it possible to find where it was joined and split it at that point?
Thx
Jola
 
ChickenMan

ChickenMan

1
Demux the mpg with TMPGenc and check that the files sizes approx add up to the size of the original mpg file. If they do then doad these 2 files into DVDLab. If not, then try other demuxers like MPEG2VCR, M2-Edit, etc.
 
J

Jola

New member
I tried that and the result was just one mpv file of size of 607mb and an mpa of about 100mb. The original was 1.4gb together.
This must mean that TmpEnc isn't finding the second half? It's definitely there 'cos I've seen it in WMP.
thx
Jola
 
VIPER_1069

VIPER_1069

1
sounds like a glitch in where the two files were joined ?! if that glitch can be found maby you could watch it then see if there is a slight jump !?

perhaps then you could RE split the file at that point and work on the two halfs instead of one !?

alternatively maby this could be frame served maby what u think chickenman !?
 
J

Jola

New member
Thx for the replies.

Used Mpeg2vcr and that seemed to do the trick. I ended up with an mpv and an mpa file that totalled about the original size.

The mpa was 44.1khz so DvdLab transcoded it but again, only a portion of it. At least this time I got the full video.

From a previous thread we had I decided to extract the wav with Goldwave and encode it to mp2 with TmpEnc as RebootJim once suggested. The mp2 it produced wouldn't load into DvdLab as it was one of those files that didn't have an icon and when when I changed to browse all files it ignored it.

So, can I use the wav file (as long as it's 48khz) with the mpv in DvdLab and make a DVD?
Thx Jola
 
J

Jola

New member
Ok, here's a reply to my own question - yes you can!
What I didn't reckon on was the inherent sync problem when converting from 44.1 to 48khz!
Oh well - I think we've been there before, I'll do a search.
Thx
Jola
 
ChickenMan

ChickenMan

1
Jola said:
Ok, here's a reply to my own question - yes you can!
What I didn't reckon on was the inherent sync problem when converting from 44.1 to 48khz!
Oh well - I think we've been there before, I'll do a search.
Thx
Jola
Click to expand...
There is absolutely NO inherent sync problem when re-sampling the audio from 44.1 to 48khz. In Goldwave Effects tab, you select the Resample option, not the Playback rate. Save it out as a WAV anf then convert that to AC3.
 
J

Jola

New member
Ok, this is what I've done so far:

Seperated the audio and video in mpeg2vcr.
Opened the mpv and mpa with DvdLab. Although DvdLab only transcoded 24mb of a 199mb mpa the dvd was in sync (while the audio lasted)
I then resampled the mpv to 48khz with Goldwave, saved as wav file.
Then processed the wav and mpv in DvdLab = out of sync.
Then converted the wav to an mp2 with TmpgEnc, processed again with the mpv = out of sync.
Then converted the wav to AC3 etc = out of sync!
Help!

Thx Jola
 
ChickenMan

ChickenMan

1
How is it out of sync, is it out of sync by the same amount from start to end of the movie? If so, use AC3 Delay Corrector to add or remove a chunk at the start of the AC3, then re-author with this new file. Repeat until in sync.
 
C

celtic_druid

1
Could try resampling with SSRC, see if that makes any difference, need to decode to wav first or just use BeSweet or HeadAC3e, to decode/resample/encode on the fly.
 
J

Jola

New member
Thx Gurs

I'll give your suggestions a go.
Still can't understand why it's out of sync when it just is not when using DvdLab :confused:

Cheers
Jola
 
J

Jola

New member
Help! Every other solution to problems have eventually been sorted out but this is driving me mad! :mad:
Sorry but don't understand what Celtic Druid is suggesting but logical, why is everything ok in DvdLab (albeit only a small part) sync wise yet if I encode with any other app the sync is way out and actually gets worse. Don't these apps all use similar engines? Why should it work in one but not the other? The mpeg is also ok, is there any data I can offer?
Thx
Jola
 
ChickenMan

ChickenMan

1
As I said in my first post, there is simply a problem with the MPEG file, and appears the audio is the culprit. I can assure you nothing goes to plan with crappy files, as you have found out most programs crash or dont extract or convert or .... unless the files are 100%. Every situaltion is different and how best you can recover the mpg file is a matter of trying just about every program until you can find one that works with YOUR file.

As I keep saying, convert the audio to AC3. Use the WAV file you got from Goldwave and use ffmpegGUI or TMPGenc AC3 Pluggin or Sonic AC3Enc. You can use BeSweet but it MUST be the very latest or your just wasting your time.
 
J

Jola

New member
Thx for your help but I've tried everything I'm capable of now and this must be a situation where I've got one crap file. It's history!
Btw in a post somewhere you (Chickenman) referred to a new DVD"VCD tutorial which performed quicker.
I've searched for the tute but can't find it - can you point me to it?

thx
Jola
 
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