HDConvertToX v. 3.0 (14/10/2010)

[Sharc]

@buzzqw
chapter extraction from an .m2ts takes about 5 to 10 seconds using eac3to.
Why this race? Cant it be done similar to audio extraction (which takes much longer)?

[spida_singh]

to extract a chapter should in theory take seconds, it's a very small file, using the stream extractor, it took 7 seconds, just for info really.

regards

[buzzqw]

Why this race? Cant it be done similar to audio extraction (which takes much longer)?

audio extraction is done when encoding is in progress... for chapters i must know it when you start encoding (not after..)

BHH

[buzzqw]

update hdc for chapters and bluray/avchd

for testing

load your m2ts
select as codec x264 and check blueray or avchd
add to queue

make sure a chapters.txt is done in temp folder
make sure in meta file you will see the chapters timing

sorry pal, but it's a features i am unable to test (no blueray drive :( )

thanks

BHH

[Sharc]

audio extraction is done when encoding is in progress...
Surprise.... I always made the experience that audio / subs extraction (eac3to) and audio re-encoding (libAften) is done before the video encoding (x264) starts at all. Means strictly sequential, one after the other. Did I get something wrong? Just curious.....

[Sharc]

for testing

load your m2ts
select as codec x264 and check blueray or avchd
add to queue

make sure a chapters.txt is done in temp folder
make sure in meta file you will see the chapters timing

Yep! All your test steps passed successfully :)
(No full encoding and authoring done yet, this is still to be done)

[buzzqw]

Surprise.... I always made the experience that audio / subs extraction (eac3to) and audio re-encoding (libAften) is done before the video encoding (x264) starts at all. Means strictly sequential, one after the other. Did I get something wrong? Just curious.....

i will explain better:

all pass are done one step at time

and so the chapter extraction is done after the .meta file is created and after the muxing line is added to queue too

every time you start an encoding (or add to queue) ALL jobs is already stored, and so hdc have no work
hdc will not check or analyze anything after first work is started

Yep! All your test steps passed successfully
(No full encoding and authoring done yet, this is still to be done)

:goodpost:

BHH

[tfhfony]

@tfhfony
the height it editable! just write 560

BHH

For some reason I had the idea, these values jumped back every time, but it seems I was wrong. Removed AutoMKV from my system, and using HDC now and just made the donation I promised some time ago already.

One question though (not directly HDC related), how much does compression suffer when using MOD8/4/2 instead of MOD16? I have the idea the difference is not that big.

[spida_singh]

update hdc for chapters and bluray/avchd

for testing

load your m2ts
select as codec x264 and check blueray or avchd
add to queue

make sure a chapters.txt is done in temp folder
make sure in meta file you will see the chapters timing

sorry pal, but it's a features i am unable to test (no blueray drive :( )

thanks

BHH

Worked fine, I will test a full disc tomorrow/tonight.

nice work

[buzzqw]

For some reason I had the idea, these values jumped back every time, but it seems I was wrong. Removed AutoMKV from my system, and using HDC now and just made the donation I promised some time ago already.

One question though (not directly HDC related), how much does compression suffer when using MOD8/4/2 instead of MOD16? I have the idea the difference is not that big.

thanks for your donation! much appreviated :)

about compression and mod: x264 will no suffer or at least not enough to be significative.
While Xvid need mod 8/16, x264 will works well even with mod4

pay attention to filters, some requires mod16

Worked fine, I will test a full disc tomorrow/tonight.

nice work

thanks. i waiting good news

BHH

[rickhtoo]

about compression and mod: x264 will no suffer or at least not enough to be significative.
While Xvid need mod 8/16, x264 will works well even with mod4

pay attention to filters, some requires mod16

On that subject, HDC defaults to mod4 width and mod16 height. Would it be better to just set both to mod16 by default? I would think they should both be the same..

Rick

[Mrsash]

@spida_singh AND sharc

thanks

@Mrsash

in visual crop you should see only the corner of image

what's the problem ? (i haven't fully understud your problem)



figure that out bit later thanks

I still have a weird problem. The audio in HDC is getting recognized as 2 channel AC3 even now, even though everything else including graphstudio recognizes based on the video input as ffdshow 5.1 channel?

thanks man

[flebber]

After analyzing an mpg file it wouldn't detect the audio. The make report shows script flagged audio to false. I thought I would use the DG Indexer. However DG indexer fails as file not supported and it didn't detect audio either.

I tested the file in Megui's Dgindexer was able to detect and demux audio and video, so I figure your DGindexer should work and then load files into HDC.

Below is the make report and mediainfo.

General
Complete name : C:\Rip\Source Video\duran_duran_-_girls-on-film-(uncensored).mpg
Format : MPEG-PS
File size : 63.2 MiB
Duration : 6mn 19s
Overall bit rate : 1 397 Kbps

Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 1
Format settings, Matrix : Default
Duration : 6mn 19s
Bit rate mode : Constant
Bit rate : 1 120 Kbps
Width : 352 pixels
Height : 240 pixels
Display aspect ratio : 4/3
Frame rate : 29.970 fps
Scan type : Progressive
Bits/(Pixel*Frame) : 0.442
Stream size : 50.6 MiB (80%)

Audio
ID : 192 (0xC0)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Duration : 6mn 19s
Bit rate mode : Constant
Bit rate : 224 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Resolution : 16 bits
Video delay : -67ms
Stream size : 10.1 MiB (16%)


HDConvertToX v.1.8.335.2949 report

Input File: c:\rip\source video\duran_duran_-_girls-on-film-(uncensored).mpg ( C:\Rip\Source Video\duran_duran_-_girls-on-film-(uncensored).mpg )
Codec Video:
Width / Heigh : 352 / 240
Framerate / Framecount: 29.970 / 11373
Duration(hh:mm:ss): 0:6:20
Aspect Ratio: 1.4667
Resized resolution: 352 / 240
Crop Values : 8:0:8:0
Activate: Follow ITU Resizing
Activate: Anamorphic Resize

Start Video Configuration ->
Encoding Settings: X264 in MKV
NMT Compatibility: On
Encoding Preset: 7
Final Size: 20
Priority: idle
Denoise Level: Super Light
Video Handling: Use Best Decoder
-> End Video Configuration

Start Audio Configuration ->
Audio Codec: Nero AAC Audio
Audio Bitrate/Quality: 0.4
Audio Channels: Original
MP3 Mode: vbr
Normalize: On
Audio handling: Use Eac3to as demuxer
Keep only core: On
-> End Audio Configuration

Full Audio List-> (*** mean selected)
NONE

-> End Full Audio List

Full Subtitle List-> (*** mean selected)
*** NONE

-> End Full Subtitle List

Mux Subtitle in MP4/MKV file: On

Start Advanced AviSynth ->
Basic Filter: GradFun2DBmod()
FreeAVS String: VagueDenoiser(threshold=0, method=3, nsteps=6, chromaT=0).asharp(2,4,1)
ColorMatrix: On
-> End Advanced AviSynth

Start Queue ->
prompt $d $t $_$P$G

"C:\Rip\HDConvertToX_1.8.332.2935\applications\x264.exe" --crf 20 --threads auto --thread-input --no-psnr --progress --keyint 250 --bframes 3 --mixed-refs --trellis 0 --ref 3 --deblock -1,-1 --subme 9 --direct auto --vbv-bufsize 14000 --vbv-maxrate 25000 --me umh --no-ssim --weightb --b-adapt 1 --no-chroma-me --8x8dct --aud --nal-hrd --aq-strength 1 --sar 4300800:4392960 --output "C:\Rip\HDConvertToX_1.8.332.2935\temp\hdconverttox_duran_duran_-_girls-on-film-(uncensored).h264" "C:\Rip\HDConvertToX_1.8.332.2935\temp\hdconverttox_duran_duran_-_girls-on-film-(uncensored).avs" --level 4.0
"C:\Rip\HDConvertToX_1.8.332.2935\applications\mkvmerge.exe" -o "C:\Rip\Produced\Duran Duran - Girls On Film.MKV" --default-duration 0:29.970fps --aspect-ratio -1:1.435929 "C:\Rip\HDConvertToX_1.8.332.2935\temp\hdconverttox_duran_duran_-_girls-on-film-(uncensored).h264" --chapters "C:\Rip\HDConvertToX_1.8.332.2935\temp\autochapters.txt" --title "Done with HDConvertToX v.1.8.335.2949"
-> End Queue

AviSynth Script ->
Working with files: C:\Rip\HDConvertToX_1.8.332.2935\temp\hdconverttox_duran_duran_-_girls-on-film-(uncensored).avs
try {
directshowsource("c:\rip\source video\duran_duran_-_girls-on-film-(uncensored).mpg",audio=false)
last = isRGB(last) ? ConvertToYV12(last) : last
last = isYUY2(last) ? ConvertToYV12(last) : last
LanczosResize(352,240,8,0,-8,-0)
ColorMatrix(mode="Rec.709->Rec.601")
hqdn3d(1)
GradFun2DBmod()
VagueDenoiser(threshold=0, method=3, nsteps=6, chromaT=0).asharp(2,4,1)
}
catch (err) {
last=BlankClip()
converttoyv12()
subtitle(err)
trim(0,1500)
}
-> End AviSynth Script

[buzzqw]

figure that out bit later thanks

I still have a weird problem. The audio in HDC is getting recognized as 2 channel AC3 even now, even though everything else including graphstudio recognizes based on the video input as ffdshow 5.1 channel?

thanks man

hdc don't reely of directshow source for audio detection and analysis

make sure you don't have checked any matrix in ffdshow audio decoder

After analyzing an mpg file it wouldn't detect the audio. The make report shows script flagged audio to false. I thought I would use the DG Indexer. However DG indexer fails as file not supported and it didn't detect audio either.

your film seems mpeg1 and eac3to isn't able to analyze audio part correctly.
try renaming your file to .avi, and reload in hdc

BHH

[Sharc]

@buzzqw
You may include the "Create blu-ray structure" and "Create avchd structure" selection in the .ini as well.

And another request:
Would it be possible for HDC to accept as input files *.dgv, *.dga, *.dgm index files from neuron2's NV tools (similar to the currently accepted *.d2v)?

[Mrsash]

hdc don't reely of directshow source for audio detection and analysis

make sure you don't have checked any matrix in ffdshow audio decoder



I checked in ffdshow audio decoder. The only thing checked was mixer. I even unticked that and found HDC loaded this file saying AC3 2 channel? I am going nuts here.
thanks for the help

[flebber]

your film seems mpeg1 and eac3to isn't able to analyze audio part correctly.
try renaming your file to .avi, and reload in hdc

BHH

I renamed it to .avi and it does load correctly and then recognized mp2 audio. Why its still the same audio?

[tfhfony]

Is there a way to force a certain AR for the encoded material? Maybe I am overlooking it, but it would be nice if I could set it my self.

[Sharc]

Which AR are you talking about?
- Display AR: you can just overtype the value in the GUI and check with Preview
- Pixel AR: this will change when you overtype the Width or the Height of the resizing (and depending on your intention tick Anamorphic Shape)

[buzzqw]

@buzzqw
You may include the "Create blu-ray structure" and "Create avchd structure" selection in the .ini as well.

And another request:
Would it be possible for HDC to accept as input files *.dgv, *.dga, *.dgm index files from neuron2's NV tools (similar to the currently accepted *.d2v)?

1) added to ini
2) my main development pc is a virtual windows xp on fedora..... i cant add it directly since i have no clue how it works (even if i own a nvidia 9600gt and have the license for Neuron2 NV tools)

I checked in ffdshow audio decoder. The only thing checked was mixer. I even unticked that and found HDC loaded this file saying AC3 2 channel? I am going nuts here.
thanks for the help

please analyze the ac3 with mediainfo, and report back

Is there a way to force a certain AR for the encoded material? Maybe I am overlooking it, but it would be nice if I could set it my self.

you can manually edit the Display AR

I renamed it to .avi and it does load correctly and then recognized mp2 audio. Why its still the same audio?

on avi input, hdc will force the muxing in MKV and with mkv input eac3to works better than with mpeg...

BHH

[tfhfony]

Ok, one question, which is not direct HDC related...

I have a few DVD's with Music Video Clips. These were probably originally taped in NTSC, but the releases here in Europe are PAL. When I convert these files to xvid/mkv, I get a jitter in these files and I can't find a way to get rid of it.
So the DVD's are actually PAL (720x576@50Hz) and the original DVD's don't have this issue. But when I convert them, they jitter.
With original European productions, I don't see this issue at all.

[flebber]

buzzqw would it be possible to add the ability to edit tags for files we are encoding in HDC eg Title - Artist - Comment. Or perhaps accept an xml tag file.

Some players eg VLC need this info to display items correctly in the playlist. For example if I have 5 files encoded with HDC and loaded my files/directory with these files into vlc playlist all I would see is

Done with HDConvertToX v.1.8.335.2949
Done with HDConvertToX v.1.8.335.2949
Done with HDConvertToX v.1.8.335.2949
Done with HDConvertToX v.1.8.335.2949
Done with HDConvertToX v.1.8.335.2949

Which can be a bit confusing. It's sort of VLC's fault for having advanced playlist features for video. Most players don't and usually only display the filename.

PS would it be easy to have HDC convert filename to .avi if the file is not supported as with mpeg files ?

Sorry too ask so much its just that I love your work

[tfhfony]

Which AR are you talking about?
- Display AR: you can just overtype the value in the GUI and check with Preview
- Pixel AR: this will change when you overtype the Width or the Height of the resizing (and depending on your intention tick Anamorphic Shape)

Well.. This seems to go wrong here...
I just converted a 4:3 video, 720x576 1:33 AR
The autocrop decided to remove 6 pixels left, 10 pixels right, making a 704x576 file, and the display AR mentiones 1.3334 (movie AR 1.3038). But the final file (which is nicely 704x576) get's an AR of 1.2. Right now I use mkvmerge GUI to remux it with the right AR.

[Mrsash]

1)
please analyze the ac3 with mediainfo, and report back


It is weird media info says 2 channel as well but graphstudio , media player 6.xxx....... Is there a way to tell independently, since this is of the air HD content?

[tfhfony]

http://www.file-hunter.com/hdc.JPG

You can probably already see the problem here, although it's an NTSC file (720x480). It's cropping 4 and 12 pixels, making the file 704x480. The Display AR is 1.3334, but the AR Error is already at -11%. Could it be that this is causing it?

[Sharc]

I think HDC is correct. The numbers do make sense, assuming an NTSC anamorphic source with a pixel aspect ratio of 8:9 for a Display AR of 4:3. You should try ticking the Anamorphic Shape - your source is probably anamorphic.
But for such discussions it would always be helpful to upload a short clip. Otherwise we continue with speculations.

Added:
Or if you leave Anamorphic Shape deselected you may have to overwrite the Height by 540 which will reverse the original anamorphic picture to one with a pixel AR of 1:1.

[buzzqw]

It is weird media info says 2 channel as well but graphstudio , media player 6.xxx....... Is there a way to tell independently, since this is of the air HD content?

you can try playing with vlc

since it don't reely on directshowsource, you will got the exact channels

BHH

[tfhfony]

Nop.. The file I was using wasn't anamorphic.. Setting 540 does indeed give a correct AR, but that doesn't make sense: upscaling it to 540 to get a correct AR.
I might look into uploading a part of a clip soon :)

But I am puzzled anyway. It seems HDC always wants to scale (at least the height). It doesn't matter what PAL clip I load. The size HDC automaticly selects is never the original size - crop.
Horizontally it is...
Vertically it's always lower...

When I hit the anamorphic button, I do get the correct vertical height, but then the final AR is wrong, as the original file wasn't anamorphic.
What I am expecting is:

I load a file 720x576
HDC wants to crop 8x8 horizontal and 16x16 vertical (for example)
I expect HDC to select as output with: 704x544 But I get: 704x528 (or 704x512, etc...)

[Sharc]

Nop.. The file I was using wasn't anamorphic..
How do you know?
Setting 540 does indeed give a correct AR, but that doesn't make sense: upscaling it to 540 to get a correct AR.
This is almost a proof that your source in fact IS anamorphic!:p

[buzzqw]

buzzqw would it be possible to add the ability to edit tags for files we are encoding in HDC eg Title - Artist - Comment. Or perhaps accept an xml tag file.

i will look at this

Some players eg VLC need this info to display items correctly in the playlist. For example if I have 5 files encoded with HDC and loaded my files/directory with these files into vlc playlist all I would see is

Done with HDConvertToX v.1.8.335.2949
Done with HDConvertToX v.1.8.335.2949
Done with HDConvertToX v.1.8.335.2949

you must enable the autotitle in hdconverttox.ini :)

PS would it be easy to have HDC convert filename to .avi if the file is not supported as with mpeg files ?

in next update i added some warning message (and workaround)

BHH

[tfhfony]

How do you know?

This is almost a proof that your source in fact IS anamorphic!:p

Well.. These are mainly old Michael Jackson clips from DVD, all shot in 4:3, and a Paolo Conte concert from early '90's, also shot it 4:3.
So all my 4:3 DVD's are actually Anamorphic?

/me was under the impression Anamorphic is a technique to get 16:9 within the old 4:3 resolution, and then to strech it to a 16:9 screen :)

[Sharc]

4:3 as well as 16:9 can be encoded as anamorphic - and in fact by far most commercial DVDs are - although the anamorphic distortion for 4:3 is much lower compared to 16:9, that's why it is perhaps less obvious and less evident.:)

[tfhfony]

Thanks for the explanation.. TFH learnt something new today :)

But it does leave the question for me: Why doesn't HDC select: original resolution - crop = output resolution and change the display AR accordingly?

[Sharc]

.... because you didn't tick "Anamorphic Shape". You have to tell HDC that your source is anamorphic.
DVDs are normally anamorphic, HD sources like blu-ray are normally non-anamorphic (i.e. pixel AR 1:1). So for blu-ray you should leave "Anamorphic Shape" deselected.

[tfhfony]

OK, thanks for clarifying :-)
Now I hope to find a solution for this issue: http://forum.doom9.org/showthread.php?p=1294464#post1294464 ;)

[Sharc]

You may try, although back-and-forth conversions between PAL and NTSC is more complicated than just changing the aspect ratios.
I am stll wondering a little why HDC did not change the height automatically to 540 with Anamorphic Shape deselected ....
I cannot test it because I have no NTSC DVDs at hand.

[spida_singh]

Just to let you know, i did a full enconde of transformers keeping original chapters and THD audio, everything went fine, and played ok, apart from i got silent on audio, don't know why, any ideas buzz? I did have to re make the structure using tsmuxer because i forgot to check keep core only resulting in structure being 8GB, I managed to make the acvhd 4.2GB by remuxing with core track only, burining to a DVD 5, and looked preety good as well, just dont know why i got no audio in the xmb when playing back, but everything else was fine, good work, i think ill have to re-test ensuring i keep core only and see how it goes.

regards

[Mrsash]

you can try playing with vlc

since it don't reely on directshowsource, you will got the exact channels

BHH

Installed VLC and played media in VLC. I have never used it before so clicked on media information which did not give me much information. I then clicked Audio>Audio device> which showed Audio stereo and Audio channels which showed dolby surround. Is this what you mean I should check? Should I have set up some settings before I did this. If not what does it mean?

[buzzqw]

Ok, one question, which is not direct HDC related...

I have a few DVD's with Music Video Clips. These were probably originally taped in NTSC, but the releases here in Europe are PAL. When I convert these files to xvid/mkv, I get a jitter in these files and I can't find a way to get rid of it.
So the DVD's are actually PAL (720x576@50Hz) and the original DVD's don't have this issue. But when I convert them, they jitter.
With original European productions, I don't see this issue at all.

i suggest to post an uprocessed sample from vob in avisynth forum

Just to let you know, i did a full enconde of transformers keeping original chapters and THD audio, everything went fine, and played ok, apart from i got silent on audio, don't know why, any ideas buzz?
silent audio ? what if you convert to another format ?
maybe an eac3to bug ?

I did have to re make the structure using tsmuxer because i forgot to check keep core only resulting in structure being 8GB
HDC check automatially Keep Only Core...

Installed VLC and played media in VLC. I have never used it before so clicked on media information which did not give me much information. I then clicked Audio>Audio device> which showed Audio stereo and Audio channels which showed dolby surround. Is this what you mean I should check? Should I have set up some settings before I did this. If not what does it mean?

maybe is DPLII ? if so it is a 2channel that's sounds when decoded as 6 channels

BHH

[buzzqw]

@tfhfony

just an idea: try the Srestore filter, on Avisynth panel

BHH

[Mrsash]

thanks for your success !

subs: maybe using HdBrStreamExtractor ?



just use as input the first vob of vts, HDC will process all vobs belonging to this vts

so if you have 9 vts, you will have to queue "only" 9 job (vts_01_1.vob, vts_02_1.vob ....)

BHH

I also needed something clarified. I read this earlier. Needed some more info

If I have this DVD with songs each with its own VTS

VIDEO_TS.BUP
VTS_01_0.BUP
VTS_02_0.BUP
VTS_03_0.BUP
VTS_04_0.BUP
VIDEO_TS.IFO
VTS_01_0.IFO
VTS_01_1.VOB
VTS_02_0.IFO
VTS_02_1.VOB
VTS_03_0.IFO
VTS_03_1.VOB
VTS_04_0.IFO
VTS_04_1.VOB

Is there a way to add all this once for the same settings I wish to encode it?

Earlier I also asked if I needed to retain best quality audio but needed to minimise the space taken up by audio AC3. You advised go with Nero AAC 0.40. Assume this is for video songs as well? If not then considering that fact that vbr audio did not give me the right size and I had to use CBR audio. Which one should I use?
So question is CBR or VBR is better with AAC for Video songs Vs movies. I did go with CBR for movies since I needed to get certain size. Hoping that I am not making a huge sacrifice in quality? Also when I chose CBR in HDC it went to a choice of bitrates. What bitrate corresponds to 0.40 and others?


thanks

[Mrsash]

i suggest to post an uprocessed sample from vob in avisynth forum


silent audio ? what if you convert to another format ?
maybe an eac3to bug ?


HDC check automatially Keep Only Core...



maybe is DPLII ? if so it is a 2channel that's sounds when decoded as 6 channels

BHH

So encoding with 2 channels is fine for these. Should I stick with AC3 or does Nero AAC good for this as well? If so what bitrate if CBR should I go for since these are music vids I got of the air. If you say VBR should I stick with 0.40 then?

[buzzqw]

I also needed something clarified. I read this earlier. Needed some more info

If I have this DVD with songs each with its own VTS

Is there a way to add all this once for the same settings I wish to encode it?

select the first music vob, set hdc as you want, then add to queue.
select second vob, analyze it, then add to queue...

i am not an audiophile, but aac 0.4 quality should be enough for "normal" listening..
if you have expensive audio setup.. then reencode to flac

otherwise you will not able to eat difference from 0.4 to original audio

BHH

[Mrsash]

select the first music vob, set hdc as you want, then add to queue.
select second vob, analyze it, then add to queue...

i am not an audiophile, but aac 0.4 quality should be enough for "normal" listening..
if you have expensive audio setup.. then reencode to flac

otherwise you will not able to eat difference from 0.4 to original audio

BHH

So I assume you are saying go with CBR because chosing VBR means having to choose bitrates. What birate corresponds to 0.40 then?
thanks

[buzzqw]

first of all i prefer vbr.. anyway

* Average bitrate <-> Quality table
* 15----->0.05
* 32----->0.15
* 63----->0.25
* 99----->0.35
* 146---->0.45
* 197---->0.55
* 248---->0.65
* 299---->0.75
* 350---->0.85
* 401---->0.95

BHH

[spida_singh]

silent audio ? what if you convert to another format ?
maybe an eac3to bug ?
BHH

MPC-HC plays stream fine, could this be with the ps3 fw itself? It should not be, I will test again when im back from work in a few days.

regards

[spida_singh]

buzz, another request, can you program hdc to use original chapters when creating mkv's from m2ts files, like the way you do for blu ray structures....I have a dune on order, and it accepts MKV files with HD audio. This way, i can use single file playback when required, and structure playback if menu's are used.

regards

[buzzqw]

buzz, another request, can you program hdc to use original chapters when creating mkv's from m2ts files, like the way you do for blu ray structures....

i will check it

BHH

[Havokdan]

I can not convert to mp3 vbr / abr, even changing the options, the end result is always cbr, the command line is always, cbr, is it a bug?

[buzzqw]

I can not convert to mp3 vbr / abr, even changing the options, the end result is always cbr, the command line is always, cbr, is it a bug?

i am unable to replicate, please post a make report.
I can see in lame command line abr or -V

buzz, another request, can you program hdc to use original chapters when creating mkv's from m2ts files, like the way you do for blu ray structures....I have a dune on order, and it accepts MKV files with HD audio. This way, i can use single file playback when required, and structure playback if menu's are used.

regards

it's already as stated, check mkvmerge command line, you will see a chapter.txt

BHH