Problem joining mpeg files

Anything related to video and my tools that is not a support request.
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MatLz
Posts: 3
Joined: Fri Sep 24, 2010 7:48 am

Problem joining mpeg files

Post by MatLz »

Hi Don,
A long without speaking to you since the "other" forum. Hope you are fine.

I'm in trouble joining TV mpeg files I did record with my rescue cheap receiver.
The player in the receiver plays the recording from the beginning to the end perfectly.

First I did assume that there were 1kB of garbage at the beginning of the files (not the first of course) but after searching more, it seems that it is 64kB. Am I right ?
So I used DGSplit to ignore the 65536 first bytes.
However when I try joining the files with the binary copy ( copy /b ) there is audio clipping and video artefacts... so that is not good...

Is there also some garbage at the end of the files ?

I uploaded the beginning and the end of each file (cuted with DGSplit) if you can help me.
https://www.sendspace.com/file/di6qsg
Thank you.
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admin
Posts: 4551
Joined: Thu Sep 09, 2010 3:08 pm

Re: Problem joining mpeg files

Post by admin »

Hi MatLz!

Downloaded and investigating...
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admin
Posts: 4551
Joined: Thu Sep 09, 2010 3:08 pm

Re: Problem joining mpeg files

Post by admin »

Sorry, but it doesn't look good. It appears that they use some kind of proprietary scheme to join the segments when playing. If you play the file 1_e.mpg in DGIndex, you see a block error at the end, where they have encoded their proprietary stuff. Also, the start of 2_b.mpg has some silliness (packet length = 0).

Without knowing the details of their proprietary scheme, I can't do much, even if I wanted to.

Can you configure the capture module to use transport instead of MPEG program? That might act differently. What are the capture unit details?
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MatLz
Posts: 3
Joined: Fri Sep 24, 2010 7:48 am

Re: Problem joining mpeg files

Post by MatLz »

Thx to have investigated.
What a pity they do some weird things like this... I was hoping some dummy garbage easily removable :-(

IIRC yeah there is a "ts" mode recording but it is more silly because there still are segmented files (around 900mB each) and with a strange file extension .dvr .

The receiver is a Strong SRT5203 and there is no usefull information in the paper which comes with it.

For my next recordings it won't be a problem because I will use my all-day-use receiver...
It is just that time I had to use this one (in my room) because I had people at home.
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MatLz
Posts: 3
Joined: Fri Sep 24, 2010 7:48 am

Re: Problem joining mpeg files

Post by MatLz »

Note that I have the dvd of the Live at Pompeii but this version is the one I watched when I was young and is unavalable anywhere...

Well, I will have to use Photoshop and Audacity to try to correct the artifacts...
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