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Old 22nd January 2007, 03:06   #521  |  Link
Squee0
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I just want to change/add User Data/Metadata that appears when using gSpot, so I can identify files I've created and store other important info here. Basically replacing the text created by the encoder I use, I know that HEX Editor will work, but that only allows me to replace, but not add, plus there's a larger room for error then a program designed to modify the user data/metadata.

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Originally Posted by ReinerSchweinlin View Post
Therer are several tools for this, what exactly do you need to change? AR or Average Bitrate, Res, etc is possible afaik. Try "restream"
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Last edited by Squee0; 22nd January 2007 at 03:11.
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Old 22nd January 2007, 03:25   #522  |  Link
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Quote:
Originally Posted by Freakazoidalmaniac View Post
Can someone tell me does this remove QPEL and GMC from a file without reencoding?
Nothing in the universe can do that... it's simply impossible.
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Old 22nd January 2007, 11:21   #523  |  Link
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If you're willing to take a hit on quality, you could convert qpel to hpel. You could even do it in such a way that it looks ahead to minimize damage. But I'm not aware of any such thing to do it.

DivX GMC can be converted to non-GMC, Xvid GMC cannot ever be.
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Old 22nd January 2007, 17:38   #524  |  Link
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3-point GMC can be approximated with block MC, in exactly the same sense that qpel can be approximated with hpel. In both cases, no matter how careful you are, artifacts will accumulate over the course of a GOP, and the result will be ugly. Unless you requantize too, in which case it is a reencode, just faster because you skip the motion estimation.

Note: the difference between qpel and hpel is not just the precision of the motion vectors. A hpel-aligned mv in a qpel video is not computed the same way as the same mv in a hpel video. hpel uses bilinear interpolation, while qpel uses 8-tap. Hence why an encode of an unfiltered dvd source sometimes gets higher psnr with hpel.

Last edited by akupenguin; 22nd January 2007 at 17:46.
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Old 23rd January 2007, 12:11   #525  |  Link
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So it's like that in ASP as well? I had thought 8-tap was only for AVC qpel, thanks for clarifying that.
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Old 23rd January 2007, 15:14   #526  |  Link
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AVC is 6-tap (yes, it's simpler and faster than ASP qpel).
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Old 23rd January 2007, 20:24   #527  |  Link
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@Moitah (@everyone else too ), just for interest:
If I'm counting all the I- p- b- ... frames together ("Video Info"-Button) there are allways a few (5-10) frames missing to reach the length of the avi-file, shown in, for example VirtualDub but also in every other soft I tried. Why? FPS is (should be?) exactly 25, also shown in VirtualDub.

Thanks anyway for MPEG4Modifier, it's great.

Olnima


//edit: sorry, have to correct myself, it's only but seems to be always 1 frame less then the length, shown in VDub.

Last edited by olnima; 23rd January 2007 at 20:40.
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Old 24th January 2007, 01:33   #528  |  Link
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@olnima: It's probably because the video contains "delay" frames, a hack used by DivX/XviD to allow B frames with VFW encoding. If the video was encoded in VirtualDub or AVS2AVI, the delay frames are ignored and not saved in the AVI file, but some programs leave them in. MPEG4 Modifier doesn't count delay frames.

It's also possible for there to be one more VOP than there are frames if packed bitstream was used.
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Old 24th January 2007, 11:08   #529  |  Link
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o.k., understood.
Thanks for the reply

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Old 28th January 2007, 18:54   #530  |  Link
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The Option "Unpack Dir..." is really powerful. I hope Moitah include this option in the original MPEG4Modifier.

This is the link for the new mod version:

http://sibit.si/directsub/Mpeg4ModifierMod.1.4.4.zip

Saludos para todos...

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Old 31st January 2007, 19:38   #531  |  Link
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Having an issue with an avi file im hoping someone can solve.
When i set pixel AR to 16:9 NTSC the ratio of objects is correct but there is a small black patch on right side when played on my 32 samsung lcd.
When i set the avi to display ar 16:9, there is no black patch but the objects seem to be a little zoomed (ie:there might be some object like an arm not showing on the screen when in the other way the whole body including the arm will show.
hopefully someone can help me correct this, thank you.
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Old 2nd February 2007, 16:54   #532  |  Link
SeeMoreDigital
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Quote:
Originally Posted by Fred Astaire View Post
Unfortunately MPEG4 Modifier doesn't seem to work with my software player: A 720 x 576 recording PARed or DARed to 16:9 won't be stretched to 16:9 with Media Player Classic. Maybe a wrong setting in MPC?
It's more likely an issue with your MPEG-4 direct-show decoder filter.... Not all support MPEG-4 streams containing (ARS) aspect ratio signalling.


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Old 2nd February 2007, 18:05   #533  |  Link
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Quote:
Originally Posted by Fred Astaire View Post
I wish Media Player Classic would too. But I don't know which MPEG4 direct-show filter it uses.
It will do if you use the an appropriate MPEG-4 direct-show decoder filter.... Such as provided by FFdshow (which use the same filter approach as VLC Player).

In-fact FFdshow is able to provide most (if not all) of anybodies audio and video direct-show decoder needs...

At first glance the options within FFdshow will look a bit overwhelming. Needless to say there are many options you'll probably never use.... But it's well worth the effort


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Last edited by SeeMoreDigital; 2nd February 2007 at 18:07.
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Old 5th February 2007, 08:28   #534  |  Link
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mono not working

mpeg4modifier isn't working for me on mono:
Code:
[nick@bilbo ~/mpeg4modifier]$ mono MPEG4Modifier.exe
Mono System.Windows.Forms Assembly [$auto_build_revision$]
Keyboard: United States keyboard layout (phantom key version)
Could not set X locale modifiers
KDE colorscheme read

** (MPEG4Modifier.exe:36789): WARNING **: Missing member add_Shown in type Form, assembly /usr/local/lib/mono/gac/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll

Unhandled Exception: System.MissingMethodException: Method not found: 'System.Windows.Forms.Form.add_Shown'.
in <0x00000> <unknown method>
in <0x00015> JDP.frmMPEG4Modifier:.ctor (System.String[] args)
in (wrapper remoting-invoke-with-check) JDP.frmMPEG4Modifier:.ctor (string[])
in <0x00028> JDP.Program:Main (System.String[] args)
Anyone got any clues on how to progress this?
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Old 16th April 2007, 11:02   #535  |  Link
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For all people using linux having the Kiss issues (which require modifications to the file's headers): See http://forum.doom9.org/showthread.php?t=124794 for a wee bit faster program than MPEGModifier.
It's only an alternative it you only want to modify the header towards DivX999b000p!

Btw, keep up the good work Moitah!
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Old 8th August 2007, 02:38   #536  |  Link
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I just read through this whole thread and various offshoot links too which has been really interesting. I still can't get my head around bloody DAR/PAR and NVOPs and all the rest of it.! I am but a simple soul.
I have used your program almost since the start and I still need it as my standalone is still working away pretty well although without unpacking the bitstream it's so jerky as to be quite useless!
I hadn't updated it for ages and thought I'd drop in to check on the program and it's nice to see how far it has come. I am still on version 1.3.4 or 1.3.2 I think.
Just wanted to thank you Moitah for all the work you obviously put in.
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Old 27th September 2007, 03:21   #537  |  Link
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very nice tool

a MPEG-4 AVC version would be awesome
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Old 8th October 2007, 17:55   #538  |  Link
lazaruz
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Thank you Moitah for a great tool

I used the code and made MPEG4Watcher to unpack automatically, maybe someone else has use for it.

*Edit* Updated version which allows you to monitor multiple folders and unpack Rar-files

Here's a link

http://johanmartensson.se/

and a screenshot



Thanks again Moitah and keep up the good work

Last edited by lazaruz; 18th October 2007 at 17:40.
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Old 16th November 2007, 09:52   #539  |  Link
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Quote:
Originally Posted by cainxxx View Post
The Option "Unpack Dir..." is really powerful. I hope Moitah include this option in the original MPEG4Modifier.

This is the link for the new mod version:

http://sibit.si/directsub/Mpeg4ModifierMod.1.4.4.zip

Saludos para todos...

Both (original and modified) versions works ok under Ubuntu using Mono.

But there is only a very little problem with modified version. When processing a full directory, the name for the unpacked files is not correct, the program puts the full path as the name (for example, "VideoFiles\MyVideo1.avi", "VideoFiles\MyVideo2.avi", etc), and it's placing the files always at main personal directory.

I think it's because on Linux the separator for directories is "/", and on Windows, it's "\", so the system takes the full path as the name for the files. It can be corrected if the program changes first the default path to the correct directory, and then it names the files. At this way, the program will can be runned without any problem on Windows, and on Linux.

PD: Cainxxx, do you speak spanish? Me too...

Last edited by Pepin; 21st November 2007 at 18:38.
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Old 19th November 2007, 16:51   #540  |  Link
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I'm glad it's working okay
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