Tool to unpack MPEG4 ASP AVIs

Moitah · 2nd January 2005, 01:05

UPDATE: This has been replaced by MPEG4 Modifier CL

I made a command line tool based on MPEG4 Modifier to remove packed bitstream from MPEG4 ASP AVIs (i.e. XviD, DivX). It is written in C#, but it compiles and runs fine with Mono. A few people have tested it in Linux, with no problems reported (it will run in other OSes as long as you have Mono, even big endian systems such as Mac).

Usage should look something like:
mono UnpackCL.exe [-i] source_file [dest_file]
You may omit dest_file just to see whether or not packed bitstream was used (you don't have to check before unpacking, though, if the video isn't packed it will simply stop after this is determined). Use the '-i' switch for detailed info about the video.

Download: v1.2.1 (Binary and Source)

thop · 5th January 2005, 03:20

Thanks, works great in linux. You have to install 58MB additional stuff to make it run, but it's worth it

albertgasset · 5th January 2005, 19:52

It works well with Mono 1.0 in Debian, great work!

I've also tried with DotGNU Portable.NET 0.6.10 (1/3 the size of Mono). The source compiles fine but I get an "index of string is out of range" error when running the program:

Code:

$ ilrun UnpackCL.exe ss.avi
UnpackCL v1.0.0 by Moitah
Based on MPEG4 Modifier v1.3.0
http://www.moitah.net/

Error: L'índex de la cadena està fora del rang

I'm not sure, but I suppose it's fault of DotGNU.

Moitah · 6th January 2005, 02:16

@albertgasset: I just tested with cscc and ilrun (DotGNU Portable.NET 0.6.10) in Windows, seems to compile/run here. Is that the same AVI you used to test while running with Mono?

albertgasset · 6th January 2005, 13:42

Quote:

Originally posted by Moitah
@albertgasset: I just tested with cscc and ilrun (DotGNU Portable.NET 0.6.10) in Windows, seems to compile/run here. Is that the same AVI you used to test while running with Mono?

Yes. I've also tried packed and unpacked MPEG4, and even non-MPEG4 AVIs, and it always gives the same error; these files work as expected with MONO. The error message appears before starting the loading of the AVI file, so I think it has nothing to do with the file used.

I am using the irlun binary from Debian, I'll compile it myself and I'll let you know how it works.

albertgasset · 7th January 2005, 13:43

Quote:

I'll compile it myself and I'll let you know how it works.

Same error.

Pulver · 6th March 2005, 11:38

Thanks for this great tool!

It works perfect on my Mandrake-machine.

Any plans to include some features from the GUI (Windows) version ?

I would love to see some information about the file, such as Qpel, GMC etc.

Am I right when I assume that it is impossible to get the GUI version to work under Linux (with mono and gtk-sharp) ?

Moitah · 7th March 2005, 13:51

Quote:

Originally posted by Pulver
Thanks for this great tool!

It works perfect on my Mandrake-machine.

Any plans to include some features from the GUI (Windows) version ?

I would love to see some information about the file, such as Qpel, GMC etc.

Am I right when I assume that it is impossible to get the GUI version to work under Linux (with mono and gtk-sharp) ?

You're welcome.

I didn't plan on adding more features to the command line version. The GUI version may run in Mono soon, as they are working on their WinForms support. Of course the GUI wouldn't run as-is with GTK#, but I suppose someone could rewrite the GUI.

karellen · 7th March 2005, 14:16

Many thanks.

Just switched to mac OS X and was plodding along using Virtual PC to run MPEG4Modifier - took a lifetime.

Installed the command line tool, got it running first time without any problems - saved my life!

Moitah · 7th March 2005, 14:48

Quote:

Originally posted by karellen
Many thanks.

Just switched to mac OS X and was plodding along using Virtual PC to run MPEG4Modifier - took a lifetime.

Installed the command line tool, got it running first time without any problems - saved my life!

Mac is big endian, right? Have you checked to make sure the output works okay?

karellen · 7th March 2005, 16:25

Just watched a corrected xvid on my xvid dvd player and it worked fine - the only minor issue was that it wouldn't fast-forward.

Moitah · 8th March 2005, 00:41

@karellen: Could you run this command line program in Mono on OS X, please? It's a little program I just wrote to test the behavior of BitConverter/BinaryReader/BinaryWriter on big endian systems. Please paste the output in this thread, and you may delete the "endiantest.bin" file it creates. Thank you.

EDIT: I looked at Mono's source code, it looks like BinaryReader/BinaryWriter are always Little Endian, but BitConverter depends on your system. This could be why you are unable to fast-forward, as the code to update the AVI index uses BitConverter. I would still like to see the output from the program above, if you don't mind.

karellen · 8th March 2005, 07:47

Here you go -

Powerbook-G4:~ james$ mono endiantestcl.exe
BitConverter.IsLittleEndian: False
BitConverter.GetBytes: Big Endian
BitConverter.ToUInt32: Big Endian
BinaryWriter.Write: Little Endian
BinaryReader.ReadUInt32: Little Endian

Moitah · 8th March 2005, 15:15

Thanks,

This means the output file will have an invalid index. I will fix this soon.

Moitah · 8th March 2005, 20:26

@karellen: I put up a new version of UnpackCL. Next time you try it, please let me know if fast-forwarding works. Thanks.

tvdpoll · 10th March 2005, 23:16

Works fine with win2k. Thx for this nice tool!

karellen · 11th March 2005, 00:10

Quote:

Originally posted by Moitah
@karellen: I put up a new version of UnpackCL. Next time you try it, please let me know if fast-forwarding works. Thanks.

Just tested and fast-forwarding is now working.

Thank you, you are a true gentleman.

Moitah · 11th March 2005, 01:10

Quote:

Originally posted by karellen
Just tested and fast-forwarding is now working.

Thank you, you are a true gentleman.

No problem. I'm glad it works now

.

Infirmus · 14th March 2005, 09:39

Any posibility of adding a display of how many consec B-VOP's there are?

Tah.

Moitah · 14th March 2005, 16:05

Well, it should be pretty easy to add the "Video Info" feature, I'll do it tonight if I get a chance.

2nd January 2005, 01:05	#1 \| Link
Moitah Registered User Join Date: Feb 2004 Location: Virginia, USA Posts: 334	Tool to unpack MPEG4 ASP AVIs UPDATE: This has been replaced by MPEG4 Modifier CL I made a command line tool based on MPEG4 Modifier to remove packed bitstream from MPEG4 ASP AVIs (i.e. XviD, DivX). It is written in C#, but it compiles and runs fine with Mono. A few people have tested it in Linux, with no problems reported (it will run in other OSes as long as you have Mono, even big endian systems such as Mac). Usage should look something like: mono UnpackCL.exe [-i] source_file [dest_file] You may omit dest_file just to see whether or not packed bitstream was used (you don't have to check before unpacking, though, if the video isn't packed it will simply stop after this is determined). Use the '-i' switch for detailed info about the video. Download: v1.2.1 (Binary and Source) __________________ moitah.net Last edited by Moitah; 27th October 2006 at 09:27.

5th January 2005, 03:20	#2 \| Link
thop * Join Date: Oct 2002 Posts: 268	Thanks, works great in linux. You have to install 58MB additional stuff to make it run, but it's worth it __________________ 500.

5th January 2005, 19:52	#3 \| Link
albertgasset Registered User Join Date: Jan 2003 Location: Catalonia Posts: 68	It works well with Mono 1.0 in Debian, great work! I've also tried with DotGNU Portable.NET 0.6.10 (1/3 the size of Mono). The source compiles fine but I get an "index of string is out of range" error when running the program: Code: $ ilrun UnpackCL.exe ss.avi UnpackCL v1.0.0 by Moitah Based on MPEG4 Modifier v1.3.0 http://www.moitah.net/ Error: L'índex de la cadena està fora del rang I'm not sure, but I suppose it's fault of DotGNU.

6th January 2005, 02:16	#4 \| Link
Moitah Registered User Join Date: Feb 2004 Location: Virginia, USA Posts: 334	@albertgasset: I just tested with cscc and ilrun (DotGNU Portable.NET 0.6.10) in Windows, seems to compile/run here. Is that the same AVI you used to test while running with Mono? __________________ moitah.net

8th March 2005, 00:41	#12 \| Link
Moitah Registered User Join Date: Feb 2004 Location: Virginia, USA Posts: 334	@karellen: Could you run this command line program in Mono on OS X, please? It's a little program I just wrote to test the behavior of BitConverter/BinaryReader/BinaryWriter on big endian systems. Please paste the output in this thread, and you may delete the "endiantest.bin" file it creates. Thank you. EDIT: I looked at Mono's source code, it looks like BinaryReader/BinaryWriter are always Little Endian, but BitConverter depends on your system. This could be why you are unable to fast-forward, as the code to update the AVI index uses BitConverter. I would still like to see the output from the program above, if you don't mind. __________________ moitah.net Last edited by Moitah; 8th March 2005 at 01:27.

6th March 2005, 11:38	#7 \| Link
Pulver Registered User Join Date: Feb 2002 Posts: 35	Thanks for this great tool! It works perfect on my Mandrake-machine. Any plans to include some features from the GUI (Windows) version ? I would love to see some information about the file, such as Qpel, GMC etc. Am I right when I assume that it is impossible to get the GUI version to work under Linux (with mono and gtk-sharp) ?

7th March 2005, 14:16	#9 \| Link
karellen Registered User Join Date: Mar 2005 Posts: 7	Many thanks. Just switched to mac OS X and was plodding along using Virtual PC to run MPEG4Modifier - took a lifetime. Installed the command line tool, got it running first time without any problems - saved my life!

7th March 2005, 16:25	#11 \| Link
karellen Registered User Join Date: Mar 2005 Posts: 7	Just watched a corrected xvid on my xvid dvd player and it worked fine - the only minor issue was that it wouldn't fast-forward.

8th March 2005, 07:47	#13 \| Link
karellen Registered User Join Date: Mar 2005 Posts: 7	Here you go - Powerbook-G4:~ james$ mono endiantestcl.exe BitConverter.IsLittleEndian: False BitConverter.GetBytes: Big Endian BitConverter.ToUInt32: Big Endian BinaryWriter.Write: Little Endian BinaryReader.ReadUInt32: Little Endian

8th March 2005, 15:15	#14 \| Link
Moitah Registered User Join Date: Feb 2004 Location: Virginia, USA Posts: 334	Thanks, This means the output file will have an invalid index. I will fix this soon. __________________ moitah.net

8th March 2005, 20:26	#15 \| Link
Moitah Registered User Join Date: Feb 2004 Location: Virginia, USA Posts: 334	@karellen: I put up a new version of UnpackCL. Next time you try it, please let me know if fast-forwarding works. Thanks. __________________ moitah.net

10th March 2005, 23:16	#16 \| Link
tvdpoll Registered User Join Date: Feb 2005 Posts: 23	Works fine with win2k. Thx for this nice tool!

14th March 2005, 09:39	#19 \| Link
Infirmus Registered User Join Date: Aug 2004 Posts: 20	Any posibility of adding a display of how many consec B-VOP's there are? Tah.

14th March 2005, 16:05	#20 \| Link
Moitah Registered User Join Date: Feb 2004 Location: Virginia, USA Posts: 334	Well, it should be pretty easy to add the "Video Info" feature, I'll do it tonight if I get a chance. __________________ moitah.net

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