[Newbie] Synchro problem

[Lucius Snow]

Hello all,

First, sorry not to speak german. I am french and i just speak a bit english only. Well, here is my problem :

I downloaded a concert which was captured from french digital TV (using a Nexus card i think) in MPG (MPEG 2 for video / MPEG 1 Layer 2 for sound). The format is PAL. It plays fine on WinDVD and Windows media player. I'd like to make a DVD with it but i get a progressive desynchronisation at the rendering (using DVD architect / DVDlab for authoring). So i tried PVAstrumento 2.0.30 and 2.1 with several different settings to fix the video but i still have the problem. That's why i want to try Project X 0.81.5.I. So i installed the java rutime and ran the program. However, i have absolutely no clue about how to use it ! So is there any FAQ / manual in english somewhere ?

I don't know if it might help but here is the log of demux done by PVAStrumento :

VIDEO #1
Resolution 720 x 576 (full D1)
Aspect ratio is 4:3
Frame rate 25.00 fps
Nominal bitrate 1698400 bps
First PTS: 00:08:00.120

MPEG AUDIO #1
MPEG1, Layer 2
stereo, sampled at 48.0 kHz.
Bitrate 256 kbps
Each frame contains 24.0 ms audio (768 bytes)
First PTS: 00:08:00.120
<>
Input: E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpg
FIXING startup delay.
FIXING stream synch.
ADJUSTING GOP timecodes.
Aiming for sync at 00:08:00.120
Cutting audio.
Audio stream 1 now starts at 00:08:00.120
Video stream 1 now starts at 00:08:00.120
New MPEG video : E:\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpv
New MPEG audio : E:\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpa
ALERT> Temporal structure wrong in GOP at 01:39:05.440. Dropping.
Re-syncing.
Last fileset:
1917102776 total bytes written
Video 1: 136632 frames, 01:31:05.280
Audio 1: 227624 frames, 01:31:02.976

Any help appreciated.
Danke schön :)

[Lucius Snow]

I just did a scan info in Project X, here is the log :

=> working with collection 0

-> write output files to :

E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\



=> File 0: E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpg (2105614776 bytes)

=> File is MPEG-2 PS/SS (Video/Audio PES)

=> demux

-> found PES-ID 0xE0 (MPEG Video)

-> found PES-ID 0xC0 (MPEG Audio)

-> video basics: 720*576 @ 25fps @ 0.6735 (4:3) @ 1698400bps, vbvBuffer 112

dropping useless B-Frames @ GOP#0 / new Timecode 00:00:00.000

video: fr/ct/1p/cg/og/dg 407/1/0/34/0/0

videolength: 407f @ 00:00:16.280

avg. nom. bitrate 856156873bps (min/max: 1504400/2914400)

set first sequence_header bitrate to 2914400bps

===> new File: E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpv

--> MPEG Audio (0xC0)

Audio PTS: first packet 00:08:00.120, last packet 00:08:15.960

Video PTS: start 1.GOP 00:08:00.160, end last GOP 00:08:16.440

-> adjusting audio at video-timeline

=> src_audio: MPEG-1,Layer2,48000Hz,stereo,256kbps,CRC @ 00:00:00.000

audio frames: wri/pre/skip/ins/add 678/0/0/0/0 @ 00:00:16.272 done..

===> new File: E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\Radiohead - Les Eurockennes 2003 - MPG2HQ.mp2



summary of created media files:

.Video: 407 Frames 00:00:16.280 E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpv

Audio 0: 678 Frames 00:00:16.272 0/0/0/0 E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\Radiohead - Les Eurockennes 2003 - MPG2HQ.mp2

=> 4603081 bytes written...
Also, i let the defaults settings and i tried demux. I got a problem : the audio file is 4 MB only but it's supposed to be 170 MB i think. The video one is alright though. Any idea ? Danke.

[dvb.matt]

So is there any FAQ / manual in english somewhere ?
guess not, not even in german yet.
but you'll find smth. in italiano, french, czech, hungarian, russian, polish.. :)

the X quickscan log is too short for that, attach the log from a complete demux as you had already done..

but do it with the updated files from here (http://forum.dvbtechnics.info/viewtopic.php?t=252) !

[Lucius Snow]

Okay ... so i got the updates and recompiled the program. I don't know anything about Java but i followed the instructions and it seems to have worked because the program executes itselfs.

So i did a demux with the default settings except "Don't message missing startcode" which was checked. I had to do it otherwise i got thousands of error messages and an out of memory problem.

So here is the log :
jeudi 13 novembre 2003 21 h 21 CET

X081.5++ (05.11.2003)



=== session infos ===



=> working with collection 0

-> write output files to :

E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\



=> File 0: E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpg (2105614776 bytes)

=> File is MPEG-2 PS/SS (Video/Audio PES)

=> demux

-> found PES-ID 0xE0 (MPEG Video)

-> found PES-ID 0xC0 (MPEG Audio)

-> video basics: 720*576 @ 25fps @ 0.6735 (4:3) @ 1698400bps, vbvBuffer 112

dropping useless B-Frames @ GOP#0 / new Timecode 00:00:00.000

video: fr/ct/1p/cg/og/dg 136631/1/0/11504/0/0

videolength: 136631f @ 01:31:05.240

avg. nom. bitrate 2550342bps (min/max: 1359600/5932400)

set first sequence_header bitrate to 5932400bps

===> new File: E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpv

--> MPEG Audio (0xC0)

Audio PTS: first packet 00:08:00.120, last packet 01:39:05.400

Video PTS: start 1.GOP 00:08:00.160, end last GOP 01:39:05.400

-> adjusting audio at video-timeline

=> src_audio: MPEG-1,Layer2,48000Hz,stereo,256kbps,CRC @ 00:00:00.000

-> 2 frame(s) (48ms) inserted @ 00:00:16.632

audio frames: wri/pre/skip/ins/add 6429/0/0/2/0 @ 00:02:34.296 done..

===> new File: E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\Radiohead - Les Eurockennes 2003 - MPG2HQ.mp2



summary of created media files:

.Video: 136631 Frames 01:31:05.240 E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\Radiohead - Les Eurockennes 2003 - MPG2HQ.mpv

Audio 0: 6429 Frames 00:02:34.296 0/0/2/0 E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test\Radiohead - Les Eurockennes 2003 - MPG2HQ.mp2

=> 1747216709 bytes written...
Like i told you, the audio output file is just 4 MB instead of around 170 MB. I don't know why.

What settings should i put to demux properly and keep the synch ?
Thank you very much for helping.

[Lucius Snow]

Finally i got rid of this problem that made a 4 MB file. I had to enable two options but the problem of sync is still there ! Any suggestions ? :( I'm getting crazy.

Here is the contents of my X.ini file to let you my current configuration :


d0iDCT_Algorithm=2
d1YUVRGB_Scale=1
d2Luminance=128,0
d3Picture_Size=0,0,0,0,0,0
d4Field_Operation=0
d52048
d628;10;32;60;600;720;576;-1
d70
e0commandline #1
e1commandline #2
e2commandline #3
e3
e4
e5
e6
e7
e8150
o*E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test
r0*false
r1*true
r2*false
r3*false
r4*false
r5*false
r6*false
r7*false
r8*false
r9*false
r10*false
r11*false
r12*false
r13*false
r14*true
r15*false
r16*false
r17*false
r18*false
r19*false
r20*true
r21*false
r22*false
r23*false
r24*false
c0*false
c1*false
c2*false
c3*true
c4*false
c5*false
c6*true
c7*true
c8*false
c9*false
c10*false
c11*false
c12*false
c13*true
c14*false
c15*true
c16*false
c17*false
c18*false
c19*false
c20*true
c21*false
c22*false
c23*true
c24*true
c25*false
c26*false
c27*false
c28*false
c29*false
c30*false
c31*false
c32*true
c33*true
c34*false
c35*false
c36*true
c37*false
c38*true
c39*false
c40*false
c41*true
c42*false
c43*false
c44*false
c45*false
c46*false
c47*false
c48*false
c49*true
c50*false
c51*false
c52*false
p0*0
p1*no resampling
p2*650
p3*computed from GOP bitlength
p4*don't change
p5*max. time (0xFFFF)
p6*don't change
p7*no conversion
p8*0
p9*null
p10*6144000
p11*0
p12*null
p13*E:\FTPshare\Music\Video\Radiohead\Les eurockéennes 2003\test
p14*null
p15*computed maximum <= 9.8 Mbps(DVD)
p16*javax.swing.plaf.metal.MetalLookAndFeel
p17*use BytePos. for cuts
p18*auto
p19*demux
p20*auto
p21*5
p22*352
p23*65000
p24*0.7031 (16:9)
p25*no overlap
p26*SansSerif
p27*0
p28*null
p29*null
p30*null
p31*null
p32*null
p33*null
p34*720
p35*never
tab0
wx-4
wy-4
ww1032
wh726


Thank you.

[dvb.matt]

I've just uploaded the next update.
it gives an error (and drop) if the PTS of a following GOP goes back in time.
usually that causes an audio stop, so try it.

also, because you don't experience any video error, you can set the option 'ignore video errors after 1st gop'.
that will calculate the needed PTS from the first syncpoint and don't use any other anymore.
Usually, these are the same values as the original PTSs, if the file is errorfree..
but the must be an error.. :(

without X.ini you get the most common settings..
but sometimes they must vary..

btw:
pls attach a file, don't quote it!

[Lucius Snow]

Ok so i updated and recompiled. Also, i enabled the option you told me but the result is exactly the same : progressive desynchronisation :(

The *.ini extension seems to be forbidden ("verbotten" ?) so i zipped it. I really don't understand why it's always out of sync at the rendering (whatever i use, DVDlab or DVD architect). But then again, it does work with Windows media player, WinDVD when you play the MPG original file.

I'm lost :(


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[dvb.matt]

Also, i enabled the option
I see, but you've left the 'take only 1st audio pts' ON, so uncheck this AND 'ignore video errors..', too.
these 2 options are diff. things and the upd. takes care about the 4MB audio cut-off psb. caused by the videoPTS, I hope.

what about the audio, if you type in '0xc0' in the PIDlist of used collection and applies it. (what ignores any video data)
are there any errors in audio?

for all tests uncheck 'don't message missing startcodes'..

[Lucius Snow]

Thanks Matt.

Alright ... i did all this except :
- disabling 'take only 1st audio pts', otherwise i get the 4 MB cut problem (although i compiled with the last updates)
- disabling 'don't message missing startcodes', otherwise the processing is *extremely* slow, showing thousands of missing / found startcodes messages. Last time i checked the option, i got an "out of memory" error after 13% of processing (which took like 3 hours !). Does the final result change under this option ? Or is it just a matter of display / log ? Can i bypass it ?

So the result is still the same : progressive desynchro at the rendering with DVDlab. Also, i tried to multiplex the 2 files created by ProjectX with TEMPGenc and i got a MPG file which had the same desynchro. So i guess DVDlab has nothing to do with this problem.

Thanks for helping.

P.S : Do you watch footy ? Your pronostic for Germany - France tonight ? :) Although it's just friendly, i can't wait for it.

[dvb.matt]

Does the final result change under this option ? Or is it just a matter of display / log ? Can i bypass it ?
the results are the same, but if you encounters so many thousands of missing codes, there is a problem to talk about...

so, do an further update and use the included X.ini for the options.
you can check 'disable missing..', but it's better we have a (short) log where I can see when and why the codes are missing..
(for a short log you can press 'c' once to cancel)


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[Lucius Snow]

I still have the 4 MB cut with the new updates :/ So i tried again with the 'take only 1st audio pts' option enabled but same result : progressive desync at the rendering.

I ran another test, with 'take only 1st audio pts' unchecked then. This time, i let the missing start code message display. I had to cancel the process though. The log is attached.


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[Lucius Snow]

Hello,

Well, sorry to insist a bit :? ... I just recompiled ProjectX with the last update from November 16th and the 4 MB cut problem is still there. Does anybody has got it too ? Well, i think maybe my sync problem can be fixed if the processing doesn't stop like this and goes to the end. All my tests have failed since now but i enabled the 'take only 1st audio pts' option which must be unchecked according you. All i have to do is to finally make it work with that option disabled, but there's the 4 MB cut on the audio file so ... :|

[dvb.matt]

well, then you read carefully this thread/posts (http://forum.dvbtechnics.info/viewtopic.php?p=1204#1204).
you have to extract either a binary part of the file (~1MB) where the cut appears, or make a big log of this.
we only need ~2seconds of exactly that file area..

so, you must use the X preview to come close to that place (timecode) as 'rufus' had done..
(4MB may be at ~5950 audioframes = Timecode 143sec. (00:02:23 after start timecode )
test the extracted part whether it breaks the audo export, too..
then post it.