"Erroneous packet size" DVD burning question.

trentsteel

Okay, I'm using this DVDStyler program, which apparently is made for Linux but is supposed to work fine with WinXP.

I have a file that is an MPEG but my searches tell me it is truncated. Because of this DVDStyler goes into some infinite loop and won't burn the DVD or create an ISO image.

I was wondering, is there a way to "un-truncate" an MPEG?

I really want to see if the menu making program works but this is getting in the way of my testing.


A forum seemed to provide the basics of the question but I do not understand the answer:

The mpeg file was most likely truncated (that's not unusual). The
problem is not in dvdstyler itself but in mpgtx which dvdstyler uses to
demultiplex. mpgtx gets confused if the mpeg file is truncated and tries
to copy past the end of the file getting itself in a nasty infinite loop.
The fix is easy:

--- mpgtx-1.3.orig/mpegOut.cxx 2002-08-30 12:03:12.000000000 -0400
+++ mpgtx-1.3/mpegOut.cxx 2006-07-29 23:34:23.000000000 -0400

int length = ((Mpeg->Byte(offset+4)<<8) | Mpeg->Byte(offset+5));
from = Mpeg->SkipPacketHeader(offset);
to = offset + length + 6;
+ if ( to > FileSize ) to = FileSize; // File nust have been truncated
if (to <= from) {
fprintf(stderr, "Erroneous packet size, skipping\n");
offset++;

Get the source for mpgtx from PCLinuxOS, apply this patch and it should
work fine.

You can instead probably bypass the problem by appending a bunch of zeros
to the end of the mpeg file:

dd if=/dev/zero of=zeros bs=4096 count=1
cat old.mpg zeros > new.mpg

Bug

ecco the dolphin

trentsteel wrote: »

dd if=/dev/zero of=zeros bs=4096 count=1
cat old.mpg zeros > new.mpg

Right. Since your typical Windows system does not have the same tools as your typical Linux system, we'll have to improvise:

1.) Perhaps backup your movie file, just in case this doesn't work
2.) Start up the command prompt (Start -> Run -> cmd)
3.) Navigate to whatever directory you've stored your movie file in
e.g. if you've got your movie in E:\Temporary Files\Movies, then type:

E:
cd "\Temporary Files\Movies"

4.) Type in:

debug

5.) At this point, the cursor should be sitting behind a hyphen. Type in:

f 100 1200 0
rbx
0
rcx
1000
n zeros
w
q

Your command prompt should show something like:

E:\Temporary Files\Movies>debug
-f 100 1200 0
-rbx
BX 0000
:0
-rcx
CX 0000
:1000
-n zeros
-w
Writing 01000 bytes
-q

If at any point you end up making a mistake typing in these commands, press CTRL+C to get back to the hyphen, and then type "q" and push enter to get back to the command prompt. To start over, type in "debug" again.

Once this step is over, you should have a file called "ZEROS" that's 4096 bytes in size.

6.) Now we need to add this file to the end of your mpeg:

type ZEROS >> "My movie.mpg"

Make sure you type in >> instead of a single > because they lead to different results.

7.) Once the command prompt returns, type:

start .
exit

and you should now have an explorer window with your newly modified mpeg, and the command prompt closed.

trentsteel

Wow, thanks dude.