DGMPEGDec 1.0.13 beta 11

[neuron2]

I'm releasing a beta for feedback. Here is the link:

http://neuron2.net/fixd2v/dgmpgdec1013b11.zip

EDIT: Link updated to latest beta version.

Please refer to the Changes text file for details.

[Boulder]

Originally posted by neuron2
4. When quantizer matrix changes occur in a stream, random access would fail
in some cases, producing a corrupted frame. This has been repaired with the caveat
that any file that changes quantizer matrices on the fly must send a sequence
header with every GOP. I have never seen any file that does not do this. Please
notify me if you find one (i.e., one that does not have a sequence header for
every GOP *and* changes quantizer matrices).

If you're interested in checking this behaviour just for the hell of it, the latest CCE SP trial has the option for adaptive quantization, which I assume means changing the matrix in the stream. I don't know if using it will also force inserting the sequence header to every GOP.

Good to see you again

[Cyberia]

Originally posted by neuron2
1. A new CLI option for loading input files from a file list contained in a text file
was added as follows:

-Batch-Files -BF ([filelist]) Load batch of files.
The filelist file contains the list of files to load,
one file per line with no extra white space.

There is a very easy way to automatically generate an error-free file list:

dir *.vob /b > filelist.txt

Especially great for long lists.

[neuron2]

It just occurred to me that the GUI should be able to load from the file list too. Then we would finesse the autoload issues. Users could use your trick to make a list, edit it as they like, and then load it through the GUI.

[Cyberia]

The GUI could even make the file list...

[neuron2]

To be consistent, then I'd have to give an editing capability.

[neuron2]

Here is DGMPGDec 1.0.13b5:

http://neuron2.net/fixd2v/dgmpgdec1013b5.zip

This version adds tritical's changes as follows (I really like the info overlay!):

A) added info option to mpeg2source() to display info on frames
- example usage: mpeg2source(info=true)

B) iPP is a bool again. If it is not explicitly set to true or false then it
defaults to auto which switches between field/frame based pp based on the
progressive_frame flag

C) 4:2:2 input support
- can now correctly decode 4:2:2 input sources and correctly output it
to AviSynth as YUY2

*NOTE: mpeg2source() now throws an error on 4:4:4 input, it could handle it
but AviSynth 2.5 does not have internal YUV 4:4:4 support

3a.) 4:2:2 PLANAR post-processing support

D) Upsampling to 4:2:2 from 4:2:0 based on progressive_frame flag. Uses new
upConv parameter of mpeg2source().

- example mpeg2source(upConv=true)

*NOTES: it will only work if input is 4:2:0, if input is anything else
then the upConv parameter is ignored

E) BlindPP now supports YUY2 colorspace

F) other stuff:

- fixed blindPP syntax bug (x and X)
- fixed a small bug with showQ option
- fixed small memory leak with FrameList/GOPList not being free'd
- fixed a bug in the vertical chroma deblocking postprocessing
QP pointer being passed was incorrect for 4:2:0
- faster mmx 4:2:2 to packed YUY2 and YUY2 to planar 4:2:2 conversions
- info output would not work correctly if temporal_reference was not zero
based at the beginning of gops, it does now

[zettai]

These changes are excellent! Everything is working fine for me so far.

I was wondering if it is possible to include the color matrix used by the vob in the info list?

[neuron2]

Originally posted by zettai
I was wondering if it is possible to include the color matrix used by the vob in the info list?

DGDecode is of course not limited to VOBs. But what is the "color matrix used by the vob"?

Thank you for your feedback.

[zettai]

Ah sorry, yes I mean the mpeg2 coefficients - i.e. Rec.709 vs Rec.601. Gspot can identify these in mpeg2 headers. The reason I mention it is because it's useful to know when converting to RGB in avisynth as by default avisynth uses rec.601.

All mpeg2 files should be decoded rec.709 unless specified in the header and it's that header info that I'd find handy in dgindex or dgdecode.

There is a little discussion of this in the colormatrix filter thread:

http://forum.doom9.org/showthread.php?s=&threadid=82217


(Note this is really low priority :P)

[neuron2]

Can you make it easy for me by specifying the specific syntax element in MPEG2, so that I may look it up in the ISO 13818 spec? Thank you.

[Inc]

BlindPP now supports YUY2 colorspace

NICE!

Thanx a lot!

[Wilbert]

Neuron, I'm looking at iso138182.

It's the matrix_coefficients in the sequence_display_extension() in table 6-9 (of section 6.3.6), page 56.

[neuron2]

Originally posted by incredible
NICE!

Thanx a lot!

Be sure to thank tritical for that!

[neuron2]

Originally posted by Wilbert
Neuron, I'm looking at iso138182.

It's the matrix_coefficients in the sequence_display_extension() in table 6-9 (of section 6.3.6), page 56.

Perfect. Thank you, Wilbert.

[neuron2]

Originally posted by Wilbert
Neuron, I'm looking at iso138182.

It's the matrix_coefficients in the sequence_display_extension() in table 6-9 (of section 6.3.6), page 56.

Wilbert, I have never seen a stream with a sequence display extension in it. Are you saying such things are out there? How can I report this field if it is never present? Is there some other way?

EDIT: Can you send me a stream that you think uses something other than 709 so I can check if it has the extension?

[Wilbert]

Many mpeg2s from dvd don't have it, although some do. I will look them up.

Many transport streams have it though (can also be seen with GSpot). I can send you a few samples, but I assume you have enough of those on your hdd

[Cyberia]

Originally posted by neuron2
To be consistent, then I'd have to give an editing capability.

I wasn't trying to lump work upon work. It just seemed like we could use the auto-loading feature of the GUI to get the filelist and save it for the CLI version.

However, typing: "dir *.vob /b > list.txt" is pretty darn fast, certainly faster that a GUI would be. Plus, if you are already using the CLI then you're not shy at the DOS prompt.

Typical of me... suggest a feature and then play devil's advocate against it!

[neuron2]

Originally posted by Wilbert
Many mpeg2s from dvd don't have it, although some do. I will look them up.

Many transport streams have it though (can also be seen with GSpot). I can send you a few samples, but I assume you have enough of those on your hdd

I'll have a look. But, sure, I can display the matrix coefficients type, and if there is no extension, I have to report 709, per ISO spec.

[Boulder]

Originally posted by neuron2

EDIT: Can you send me a stream that you think uses something other than 709 so I can check if it has the extension?

This clip shows I470 (MPEG-1 coeffs) when opened in GSpot:

http://www.saunalahti.fi/sam08/adapt.mpv