. Thread migration may become a penalty.
Dont't panic if in a first attempt, your parallel version is slower than the
serial one.
Best,
Michael
Am Donnerstag, 22. September 2011, 00:21:43 schrieb Mark Heath:
Hi Guys,
I'm wondering if anyone has some skeleton C code for writing
multithreaded
machine (an Athlon 1.2 GHz) I did not observe such problems.
Do you have any hints on how to proceed?
Thank you,
Michael
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from Novell. From the desktop
-65 dB. Therefore, it is unpossible to obtain
satisfactory results with th on-board sound. So I would recommend to use a
separate sound card, this way also avoiding your trouble.
HTH
Michael
Am Dienstag, 2. Oktober 2007 22:32 schrieb Andrea Giuliano:
[EMAIL PROTECTED] wrote:
a.) mjpegtools
Hello everyone,
I have a question which might be slighlty OT but I
could not find any constructive information anywhere
else (Axis support was of no real help in this case,
they gave me a download link to IIS extensions after a
lot of IE-Plugin crap).
I am using an Axis Webcam streaming
for the lines in every field. Do you have more ideas?
Thank you
Michael
-
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download
these frames? Probably the best solution would be a hardware
TBC, but I do not have access to one. Do you know about a software
solution/algorithm/a place where to search?
Thanks,
Michael
PS. The samples above are chosen because they show the effect rather clear,
not because the movie
Am Dienstag, 15. August 2006 17:43 schrieb Steven M. Schultz:
On Tue, 15 Aug 2006, Michael Hanke wrote:
[snip]
This has been talked about several times on the mailinglists in the
past. Unfortunately with 17000 messages in the archive it is hard
to find the answers
.eli | a_long_preparation_pipe_1 ; \
lav2yuv 2.eli | a_long_preparation_pipe_2 ; \
.
) | mpeg2enc
such that I obtain only one mpeg file?
Thank you
Michael
-
Using Tomcat but need to do more? Need to support web
Am Mittwoch, 12. Juli 2006 10:18 schrieb stefan:
stefan schrieb:
Steven M. Schultz schrieb:
On Wed, 5 Jul 2006, Michael Hanke wrote:
Hmmm... Please excuse my dumb question. Here are you puzzling me a
little bit.
[snip]
Hi Steven and Stefan,
being back from my vacations I
diffusion equations. For me as a mathematician
this approach looks very sound. Does somebody have experiences with such
methods?
Thank you.
Michael
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Thanks a lot to all of you for your answers!
I will try to build a new version of the tools because this seems to be the
most elegant possibility.
Michael
Am Dienstag 02 Mai 2006 18.35 schrieb Martin Collins:
On Tue, 2 May 2006 09:51:19 +0200
Michael Hanke [EMAIL PROTECTED] wrote:
I got
Hello,
I got a very long MJPEG avi-file (ca 14 GB) which seems to use the OpenDML
extension. Lavrec/glav seem to see the first 2 GB, only. How can I use this
file (at least in lav2yuv/lav2wav)?
Thank you.
Michael
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for that purpose?
Thank you.
Michael
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Hi,
I apalogize if this is not the right list to ask...
Recently, I got a new graphics card (NVidia 6600) which has SVideo and
Composite *inputs*. Is there any possibility to capture video from these
sources? If yes, does lavrec do the job?
Thank you.
Michael
Until a couple of weeks ago my computer wasn't fast enough to record
from a TV source and encode with mpeg2enc at the same time.
Now I want to do this but have a problem.
I record the video directly from my video card like this:
mplayer -vo yuv4mpeg -nosound -tv
Yes thanks, with toolame it works.
(I knew that I heared of another mp2 encoder but couldn't remember which
one)
-t defaults to wav format, so this wasn't necessary.
I now use the following line:
arecord -f dat | toolame - out2.mp2
This is exactly what I needed.
necessary? Is there any explicit dependence on the version? I am running an
*very* old version of LVS with mjpeg tools replaced by the latest one, and it
seems to work on my PAL files. Does anybody intend to update CVS?
Thank you.
Michael
.
Michael
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to do a better
job? If so, which additional filters do you suggest (yuvcorrect CONFORM etc)
in order to get rid of scaling artifacts?
Thank you.
Michael
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Am Dienstag 06 Dezember 2005 04.34 schrieb Steven M. Schultz:
On Mon, 5 Dec 2005, Michael Hanke wrote:
I have some material which is widescreen in letter box format. Since the
quality is rather high (Digital Satellite -- SVHS-cable -- (re)digitize)
I
am thinking of transforming
filtering/processing tools for each part of the stream. Be sure
that each command generates exactly the same output format (resolution,
framerate, etc).
Thank you,
Michael
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, rgb level and so on?
- If I remember corectly there are special switches for bw material in some of
the tools. How can I restrict the tools to only handling the Y-channel?
Thank you.
Cheers,
Michael
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not build with the new release of the tools. It seems
that nothing has been done for ages. My question: Is there a chance that this
package will be updated? If not, which alternatives can be used to edit MJPEG
avi-files?
Michael
---
SF.Net
On Sat, 2005-07-09 at 08:06 +0200, Bernhard Praschinger wrote:
Hallo
Now, I would believe that the mjpegtools sources are just not ready yet
for AMD64-architecture and given up.
So, I tried again to compile it myself and see what is wrong.
Here is my first try.
Comments?
Which
I am running a Debian AMD64 system.
I have little luck with mjpegtools so far.
I know, I have mentioned it already, but temporarily I fixed the problem
by using the Marillat Debian packages.
However, they are absolutely slow. They run at about half the speed than
the usual i386 packages do. It
Hi,
did you read this page?
http://www.heroinewarrior.com/cinelerra/cinelerra.html#LOADING%20FILES
I think,this does the trick.
MPEG program streams and transport streams
You need to run mpeg3toc on these just like MPEG 1,2 video. Program and
transport streams are structured into multiple
Date: Tue, 22 Mar 2005 15:17:54 -0800 (PST)
From: Steven M. Schultz [EMAIL PROTECTED]
On Tue, 22 Mar 2005, Lehmeier Michael wrote:
I tried to compile the mjpegtools for an Athlon64.
I am currently installing a Debian distribution for gcc 3.4 on
http://debian.inode.at/debian-amd64/gcc
more optimized code?
Thanks
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INFILE=1.mpg
OUTFILE=1out.mpg
mplayer -ao pcm -aofile stream.wav -vo yuv4mpeg -vf scale=352:576:1
$INFILE
cat stream.wav | nice mp2enc -s -r 48000 -b 224 -o audio.m2a
cat stream.yuv | nice mpeg2enc -f 8 -q $QUANT -o video.m2v
sleep 2
mplex -o $OUTFILE -f 8 audio.m2a video.m2v
--
Lehmeier Michael
, some
figure are included below.
Michael
PS. yuvdenoise did not build with icpc because of a syntax error. I did not
have time to go into the issue. M
First run:
==
Parameters: standard configure, using gcc 3.3.1
-DNDEBUG -finline-functions -fno-PIC -march=athlon-tbird -mno-sse -mno
Am Dienstag 15 Februar 2005 00.42 schrieb Steven M. Schultz:
On Mon, 14 Feb 2005, Michael Hanke wrote:
I count y4mdenoise an excellent piece of software but I thought that I
make
something wrong: On my machine (1.2GHz Athlon) I obtain a denoising rate
of
0.3 frames/sec. (that is, 5
On Fri, 2005-01-28 at 17:02 -0800, Trent Piepho wrote:
On Thu, 27 Jan 2005, Lehmeier Michael wrote:
I record from a TV card with the following command:
mencoder -tv driver=v4l2:input=3:adevice=/dev/dsp:forceaudio tv:// -ovc
lavc -oac pcm -lavcopts vcodec=mpeg4:vbitrate=3000:keyint=50
tried the following line:
lav2yuv out.avi | yuvscaler -O VCD | mpeg2enc -s -o mpg.mpg
What I get is:
FRAME
Not a JPEG file: starts with 0x00 0x00
++ WARN: [lav2yuv] Decoding of Frame 39 failed
Is there any way to fix this?
Thanks!
--
Lehmeier Michael [EMAIL PROTECTED
as the quality of
the mjpegtools does not depend on it. :-)
May I cite a joke: Changing the engine of a car should not mean to change the
highway markings, too.
Thanks,
Michael
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Am Dienstag 14 Dezember 2004 18.33 schrieb Steven M. Schultz:
On Tue, 14 Dec 2004, Michael Hanke wrote:
I tried to build the mjpegtools from CVS. Unfortunately, I could not run
autogen.sh successfully. The most important error:
HAVE_PNG not defined in AM_CONDITIONAL
Am Mittwoch 15 Dezember 2004 08.33 schrieb Steven M. Schultz:
On Wed, 15 Dec 2004, Michael Hanke wrote:
HAVE_PNG appears in configure.in. The stuff with HAVE_LIBPNG seems to be
ok.
The resulting configure script finds the png libraries...
Then, for some reason, you do not have
Hi,
I tried to build the mjpegtools from CVS. Unfortunately, I could not run
autogen.sh successfully. The most important error:
HAVE_PNG not defined in AM_CONDITIONAL
What is going wrong? I have installed libpng-devel.
Thank you.
Michael
Ronald S. Bultje wrote:
Hi,
On Sun, 2004-10-03 at 23:06, Michael Steinhauser wrote:
I could compile and install the CVS-version (mjpeg_play 1.7.0) with
checkinstall. When i tried to compile linux videostudio i got the error
for missing mjpeg-1.6.0. Can´t studio be build with the latest CVS
Ronald S. Bultje wrote:
Hi,
On Fri, 2004-09-03 at 10:18, Michael Steinhauser wrote:
I tried to install mjpegtools 1.6.2 on Suse 9.1 x86_64.
[..]
../utils/libmjpegutils.a(mjpeg_logging.o): relocation R_X86_64_32 can
not be used when making a shared object; recompile with -fPIC
../utils
stream.
But this is a noticable loss in quality which I often really do not
want.
Is there any way to fix such a broken video stream in a clean way?
All tools that I know that can do that are Windows only so far.
--
Lehmeier Michael [EMAIL PROTECTED
to realize this
abstraction additionally? Ideally, this would even include an inclusion of
separate sound tracks.
LVS is also under further development: Would it be possible to join the
efforts?
Regards,
Michael
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recompiling the sources (from MJPEG-tools web site!) the problems
disappeared. It works well both under 2.4.x and 2.6.x. I am not sure if this
helps in your case because I am using bttv for capturing.
Michael
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I tried to install mjpegtools 1.6.2 on Suse 9.1 x86_64. I ran configure
with --enable-libsuffix=64 and got no errors.
When I typed make, the following error was reportet:
/snap
lib/x86_64-suse-linux/3.3.3/crtendS.o
/usr/lib64/gcc-lib/x86_64-suse-linux/3.3.3/../../../../lib64/crtn.o
milage may vary.
Michael
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to trans.wav. This sound
is now added to the silent transition (say, trans.avi) by
lavaddwav trans.avi trans.wav trans_s.avi
trans_s.avi is now a standard conforming avi file with sound which I import
into the LVS project.
HTH
Michael
Am I thinking in the right way?
Anne
of #ifdef
WORDS_BIGENDIAN
for invoking/not invoking byte swapping. I would be grateful if somebody
else
could test it (on a Mac?)
Give me some more time. Than I should be able to test it. Currently busy
with to much other things.
Thanks. There is no hurry.
Michael
lowpass 8000 |
\
cat /dev/stdin | nice mp2enc -s -r 48000 -b 224 -o audio.m2a
mplex -f 8 audio.m2a video.m2v -o $1_vhs.mpg
rm stream.yuv audio.m2a video.m2v audiodump.wav
After some testing this seemed to be the best quality/space ratio.
--
Lehmeier Michael [EMAIL PROTECTED
-world's favourite lossless picture format but
compressed.
There is the png2yuv tool.
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. It helps a lot.
I have no idea with your mplex problem.
Alas, it persists.
I solved it by remuxing it on the console later, but that is hardly a
good solution.
Still, because I don't have too many such avis I can live with it for
now.
--
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idea?
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I tried around a lot with options but never got what I wanted.
How do I do it right?
PS: Is there a debian package for y4mscaler yet?
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From
that you know the size of the original image (if landscape or
portrait for example) or involve scaling, which I don't want in this
case.
Any easy solutions?
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three products:
PicVideo, MainConcept, and Morgan.
Which one is preferable?
Thank you very much
Michael
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6.0/768
frames increased a little bit. Before I had
around 4 frames per hour in full PAL-dvd resolution when capturing from Hi8
recordings. Now it is double that much. (I use xfs on the capturing disk)
This is sufficient for my purposes.
Thanks a lot!!
Michael
On Monday 03 May 2004 16.22, you wrote:
Hi
Hi,
On Monday 03 May 2004 16.22, you wrote:
Hi Michael,
On Mon, 3 May 2004, Michael Hanke wrote:
- In my old OS setting (SuSE 7.2), I never observed these artifacts.
Recently, I upgraded to SuSE 9.0.
Can you try an old driver version (with a 2.4 kernel) and the new driver
version
/kernel or
such.
Is there anything what I can try else (besides capturing under W98)?
Thank you.
Michael
On Wednesday 28 April 2004 19.28, you wrote:
Hallo
Thanks for your explanation. Deeply hidden on Hauppauges website I found
a hint that the Soundblaster Live! could be the source
lines
was reduced, but this time I got many inserted frames when capturing. So it
appears to be a PCI bus timing problem. Do you have any hints on how to
optimize the chipset timings?
Thank you.
Michael
On Sunday 18 April 2004 09.29, you wrote:
Hallo
The first one is concerned
://www.nada.kth.se/~hanke/files/block.ppm
The effect is clearly seen in the backstage and near the walls on the left
side. What can I do?
I am using the mjpegtools 1.6.2 on a SuSE Linux 9.0 box.
Thank you.
Michael
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Hi,
some time ago I submitted a bug fix for lavtools/matteblend.flt.c. It seems to
be lost because it did not make it into the CVS. Should I submit it once
again?
Thanks,
Michael
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Feb 2004, Michael Hanke wrote:
Here is what I got in the edit tab:
- With all the video extensions loaded into the xserver: Playing the
video gives only colored lines.
[..]
- Removing the XVideo extension from the server makes the play window
working.
This is an issue in SDL that I
window working.
I have 6 modules loaded. It is exactly extmod and v4l which much be disabled.
Are there any hints?
Thanks.
Michael
Hardware: NVidia GeForce 2 MX, Athlon 1200 (the old one)
Software: Stock SuSE Linux 9.0, XFree 4.3.0.1, nvidia or nv driver, mjpegtools
1.6.2 (BTW: great work
?
A minor issue: I can run LVS as root without any warnings. Doing the same as a
user, GTK complains about not finding a module libpixmap.so in module_path.
How can I set the module_path correctly?
Thank you.
Michael
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, reencoding I think
is the only way to salvage the situation.
:(
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it gives a couple
of complaints, it continues muxing.
This works for mplex (most of the times) and my players (most of the
times).
It is dirty, it is bad, but it is better than a VCD encoded twice.
--
Lehmeier Michael [EMAIL PROTECTED
without any problems, but the video stream is no longer
recognizable by mplex (or mplayer) and is therefore useless.
Is there any way to salvage the situation without having to reencode the
video?
I used both bbdmux, tcextract and mplex version 1.6.1.92.
--
Lehmeier Michael [EMAIL PROTECTED
This is about the problem with mpeg1 files and creating a DVD from them.
This was actually a dvdauthor problem that has been fixed in the newest
version.
I can confirm that it handles mpeg1 DVD files properly now.
--
Lehmeier Michael [EMAIL PROTECTED
=0,0,0 -eject dvd.iso
So, there seems to be something seriously wrong with the audio on VCDs.
It can't really be the Hz since SVCDs are not problematic at all.
Should I reencode it in a different way or what?
Thanks!
--
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. The SVCD palyed fine on a standalone player. Nevertheless, isn't this
result strange?
Michael
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-- Forwarded Message --
Subject: Malloc failed, Was: Re: [Mjpeg-users] MPEG2 encoding performance
Date: Mon, 24 Nov 2003 08:32:35 +0100
From: Michael Hanke [EMAIL PROTECTED]
To: Steven M. Schultz [EMAIL PROTECTED]
On Tuesday 18 November 2003 23.59, you wrote:
Hi -
What
On Thursday 13 November 2003 08.23, Steven M. Schultz wrote:
On Thu, 13 Nov 2003, Michael Hanke wrote:
On Tuesday 11 November 2003 23.30, Steven M. Schultz wrote:
cvs update is your friend grin
Mmmh... That's what I tried to do. But autoconf/automake (invoked by
autogen) failed
Thank you very much for the hint - I will try it out.
Regards,
michael
On Friday 07 November 2003 15.31, you wrote:
Michael Hanke írta:
[...]
My question is as follows: The granularity of the video is one frame (that
is, 40 ms in PAL) while the audio granularity is one sample (22.5
:
- Is the YUV4MPEG2 stream supposed to be CCIR 601 compliant? Or should the
full range be used (Y: 0-255 etc)?
- Is there a filter available to finetune saturation, contrast, and
brightness?
- Can the Bt787 card be convinced to deliver a 'better' (whatever it means)
stream?
Thank you.
Regards,
Michael
On Monday 10 November 2003 10.33, you wrote:
Hi Michael,
On Mon, 2003-11-10 at 09:32, Michael Hanke wrote:
- Can the Bt787 card be convinced to deliver a 'better' (whatever it
means) stream?
Before recording, run xawtv, right-click the window and adapt the
brightness, contrast etc
to the video stream,
probably in a control loop (with a time constant in the order of magnitude
comparable to a second)?
Thanks,
Michael
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Hi,
On Tuesday 28 October 2003 11.47, Maarten de Boer wrote:
hello michael,
interesting post.
according to the DVD standard. My hardware player was kind enough to play
the resulting mpeg2 stream burned as an SVCD. This is the picture quality
I want to have!
could you share your
not the sound tools? :-)
Michael
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somebody know about a tool for that?
Thank you,
Michael
auf hoffentlich bald,
Berni the Chaos of Woodquarter
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and 48) should be provided. Is
there any way to deduce this automatically if at least one of the input files
contains sound?
Michael
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/michael
Email: [EMAIL PROTECTED]
www: http://www.lysator.liu.se/~gz/bernhard
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and I have much to less time for
working on it.
I see. It's my problem, too.
BTW. Do you know of a (separate) tool like wavelab on MS for preparing a
better sound channel?
Yours,
Michael
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Some days ago, I was posting the following message to the list. Apparently, I
did not receive any reply. Beg your pardon for my impatience. But can
somebody help?
Thank you,
Michael
-- Forwarded Message --
Subject: lav2wav error
Date: Mon, 6 Oct 2003 08:26:24 +0200
From
working. Moreover, I am not very
sure if I am using LVS the way the authors thought.
Where can I find some information about the scene detection algorithm used in
lavplay?
Yours,
Michael
---
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be very inconvenient
for me to add 'silence' to all files without sound. Would it be possible to
modify lav2wav such that, instead of generating an error, the output becomes
a wav file with absolute silence?
Thanks,
Michael
---
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infrastructure for correct handling of wide screen video.
A longer description (and my plans) can be found at:
http://www.nada.kth.se/~hanke/files/README
Here is the patch:
http://www.nada.kth.se/~hanke/files/lvs.diff
Any suggestions and comments are welcome.
Michael
on all interlacing
possibilities (p/t/b).
Is this already fixed in the CVS-versions? I cannot see it because do not
obtain access to cvs.sourceforge.net.
Yours,
Michael
On Monday 01 September 2003 10.12, Michael Hanke wrote:
Greetings,
I am using Linux Video Studio 0.1.7 in order to cut my
.
Michael
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From: Steven M. Schultz [EMAIL PROTECTED]
On 17 Aug 2003, Lehmeier Michael wrote:
I'm trying to make mpeg1 stills out of an image.
A line like the following:
./mplex -f 6 -o /tmp/fileGAACJA.mpg /tmp/fileGAACJA.m1v
...
INFO: [mplex] Multiplexing stills stream!
Segmentation fault
Hi!
I'm trying to make mpeg1 stills out of an image.
A line like the following:
./mplex -f 6 -o /tmp/fileGAACJA.mpg /tmp/fileGAACJA.m1v
Results in:
INFO: [mplex] mplex version 2.2.1 ($Date: 2002/02/04 19:06:14 $)
INFO: [mplex] File /tmp/fileGAACJA.m1v looks like an MPEG Video stream.
INFO:
Thx for your advice.
Altivec is currently present, will try the CVS version tomorrow
or maybe the day after and post to the list how it worked.
regards
michael
On Sat, 2003-06-28 at 19:48, Bernhard Praschinger wrote:
Hallo
It would be great if anyone could point me to the right
/mjpegtools-1.6.1«
make: *** [all] Fehler 2
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michael
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On Wednesday 04 June 2003 17.57, you wrote:
Hey,
On Wed, 2003-06-04 at 07:41, Michael Hanke wrote:
If you did want to use the Playback Video page. I fear it cannot
work. Because that is a feature only for the zoran based cards.
Oops, this is exactly what I did because I thought
with that AVIFILE_VERSION or
GetAvifileVersion(), but lav2divx doesn't dump core anymore.
MJPEGTools version 1.6.1, lav2divx version 0.0.23 (2002/03/02),
Avifile RELEASE-0.7.34-030325-01:36-2.95.3.
Regards...
Michael
--- lavtools/lav2divx.cpp~ Tue Mar 25 16:31:42 2003
and IO-APIC support enabled)?
Regards...
Michael
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Martin Samuelsson [EMAIL PROTECTED] wrote:
On Sunday 23 March 2003 22:46, Michael Mauch wrote:
root lavrec -fa -ip -s -d1 -Rl -l100 -m -a0 -v1 -n64 -b1024 --file-flush 1
Mhm, decimation 1 and default q, 50, with the new driver. There are people
looking into this matter at the moment
Sorry about the late reply.
This was about synchronicity problems in a decoder mpeg2-stream that
only turn up when encoding.
From: Andrew Stevens [EMAIL PROTECTED]
The Reason for effects like this are basically, that a DTV audio
MPEG-2
stream may have gaps of varying length in the audio. If
with xawtv -c /dev/video0 and with
lavrec.
I'm posting the driver debugging log in the hope someone can point me in the
direction of what is going wrong. This happens with 0.9.1 and 0.9.2 driver
Michael
Hi again.
I already wrote about my audio sync problems when converting a digital
television mpeg2 stream to a svcd.
I use mplayer to play the video and encode it then with mpeg2enc. After
that I extract the audio (also with mplayer), encode it. After that the
result is always out of sync.
I was
the latter.
Any comments most welcome :}
Michael.
P.S. In support of my theory running tcscan on a DV produces:
(0x078386f4) ID:00db Size: 0x00023280 144000
(0x0785b97c) ID:01wb Size: 0x1e00 7680
(0x0785d784) ID:00db Size: 0x00023280
Does anybody know a good source of information on the net that explains
the problems of interlacing and field order and illustrates them with
pictures + how to get rid of these problems?
I just gave up trying to understand it all just with text descriptions.
Whenever I think I finally understood
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