On Wed, 24 May 2006, David Strozzi wrote:
Is there a way with mjpeg tools to make such a 'control file,' that
just instructs a viewer to show the follow files, with some frame rate
and other data? And are there viewers for such a format?
How about a simple BASH script that uses an ordinary im
On Tue, 16 May 2006, Bernhard Praschinger wrote:
I have 2 points you might want to change.
In line 193:
screen = SDL_SetVideoMode(screenwidth, screenheight, 0,
You can try to change the SDL_SWSURFACE to some other valid value (Modes
found here: http://www.libsdl.org/cgi/docwiki.cgi/SDL_5fSetVi
On Sun, 7 May 2006, Bernhard Praschinger wrote:
Would it be possible for you to do a backtrace ? That would provide
additional information.
yuvplay does not crash, it exits (exit code 1) immediately after creating
the video window. It does not print any error message or anything.
I tried st
Hi all,
KmPg2 (mpeg2enc frontend) version 1.94 has been released, which contains
lots of bugfixes. Have a look at the homepage for details:
http://kmpg2.sourceforge.net
Screenshots of KmPg2 can be found here:
http://kmpg2.sourceforge.net/view.php/page/Screenshots
As always, your comments,
Hi,
I noticed that the X.org Composite Extension causes a problem with
'yuvplay'. The problem occurs even when no composite manager is running.
Just the fact that the extension is loaded makes yuvplay fail.
Here is what I get:
[EMAIL PROTECTED] ~/Development/KmPg2/English/Test Videos $ smil
On Fri, 5 May 2006, bn wrote:
The problem seems to have to do with dvdauthor's STC discontinuity at the
chapter points when it's fed one file per chapter; the initial pts/dts values
are reset, and this somehow throws things off during playback, even if audio
and video endpoints are perfectly
On Thu, 27 Apr 2006, Robert Kesterson wrote:
On Thu, 27 Apr 2006 05:31:40 -0500, Dik Takken <[EMAIL PROTECTED]>
wrote:
I just upgraded my PC to use GCC 3.4, but GCC 3.4 can't compile SMILUtils
anymore. Since I heavily depend on SMILUtils for processing MiniDV files, I
am curren
Hi,
I just upgraded my PC to use GCC 3.4, but GCC 3.4 can't compile SMILUtils
anymore. Since I heavily depend on SMILUtils for processing MiniDV files,
I am currently turning the internet upside-down to find a solution to the
problem. None found yet.
Does anyone know where to find a patch t
Hi,
I released KmPg2 version 1.93 last week. KmPg2 is a graphical user
interface for converting all sorts of video files to DVD compatible MPEG2
format. It uses the encoder and filtering / video processing
tools from MJPEGTools.
This version adds support for CVS versions of FFMPEG.
http://
Hi all,
An update to KmPg2 (mpeg2enc frontend) has been released, and it has its
own project website now:
http://kmpg2.sourceforge.net
Any bugreports and suggestions are welcome!
Cheers,
Dik
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On Fri, 3 Mar 2006, pasq wrote:
hello, i tried to make a mpeg diashow withthe kipi-plugins
but i get this error:
Please ask on the DigiKam/Kipi list. They probably do not support
the latest MJPEGTools yet.
Dik
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On Tue, 28 Feb 2006, E.Chalaron wrote:
Hi all again
Just to let you know that J.Cornet wrote some nice tools to complete with
mjpegtools, such as yuvmotionfps etc... It could be great to have this
included in the CVS
It would also be great if y4mscaler could be included in MJPEGTools. This
to
That's really interesting. Too bad MJPEGTools does not have some sort of
artifact filter.
On Mon, 27 Feb 2006, Florin Andrei wrote:
http://www.videsignline.com/howto/showArticle.jhtml?articleID=180207350
Nice introduction to the concept of compression artifacts.
--
Florin Andrei
http://fl
On Mon, 27 Feb 2006, Michael Hanke wrote:
Hello,
I am interested in capturing my analog material to dv. On this list, the
Canopus ADVC-100 is very often recommended for that purpose. Here in Sweden
it is very hard to get one, and it is extremely expensive (around 500 USD).
Are there any other h
Hi all,
KmPg2 is a graphical wizard-style interface for MJPEGTools 1.8.x, FFMPEG
and SMILUtils. It can be used to convert video files of various formats
(anything supported by FFMPEG) into DVD compatible MPEG2 steams.
KmPg2 also features a seperate 'profiler' which can be used to create and
Hi all,
Has any of you ever played with the Pinnacle MovieBox DV A/D converter? It
looks like an affordable solution to convert old VHS tapes to DV.
Cheers,
Dik
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On Mon, 21 Nov 2005, Michael Hanke wrote:
You can do something like this in Bash:
( ; ; ... ) | mpeg2enc
How can I get rid of the headers of the individual streams?
Errmm... Is it necessary to remove the headers? If it is necessary to
remove them, the header is the first line in the outp
On Mon, 21 Nov 2005, Michael Hanke wrote:
- Since there was no automatic exposition of the material every take has its
own suboptimal exposure. So I need to have different settings for denoising
for every take. This way I can produce many individual mpeg files which must
be joined together. Is t
On Fri, 11 Nov 2005, Eskali wrote:
And if i create it manually with mknod /dev/video c 81 0 i get:
v4l-info
open /dev/video0: No such Device
Im using udev ..
Creating /dev nodes yourself is useless when you have udev. Any device
that is actually working in your machine will automatically get
On Sun, 6 Nov 2005, Steven M. Schultz wrote:
I see this:
YUV4MPEG2 W720 H576 F3:1001 Ib A118:81 C420mpeg2
Yep - that's the problem.
which looks fine. When I leave out the yuvfps part, the command works
625 line frame dimensions with the 525 line frame rate is fine? :)
On Sat, 5 Nov 2005, Steven M. Schultz wrote:
Those do not look like yuvfps errors. The mjpegtools portions of the
script would put their name in the messages ([yuvcorrect], and so on).
I see that '[yuvplay]' is logging messages but I can't seem to see
a "yuvplay
Hi,
I just came across an encoding command that results in an error just
before the encoding is finished. The command was:
ffmpeg -i "widescreen.dv002.dv" -f image2pipe -vcodec pgmyuv -y
/dev/stdout | pgmtoy4m -r 25:1 -i b -a 118:81 | y4mscaler -I sar=118:81 -O
infer=exact -O infer=preserve
Hi,
As I mentioned earlier on this list, I have been working on a simple GUI
frontend to MJPEGTools 1.7.0, named KmPg2. Yesterday, I released the
first testing version:
http://kde-apps.org/content/show.php?content=29587
More screenshots can be found on my homepage:
http://pingwing.xs4all.n
On Fri, 9 Sep 2005, Joe Friedrichsen wrote:
I've started to make films recently using linux and I've been trying to find
the best mpeg2 encoder for making DVD compliant video. After reading the news
groups for a while, I realized this is one of those never-fully-answered, and
always-asked ques
On Sun, 14 Aug 2005, Martin Samuelsson wrote:
Would it be possible to make lavplay obey the window's close gadget?
Yeah, that one is on my wish list as well... The window manager's close
button does not work with both lavplay and yuvplay. It would be great if
this could be fixed!
And thank
On Wed, 10 Aug 2005, Steven M. Schultz wrote:
On Wed, 10 Aug 2005, Peter Dettori wrote:
the files are from my digital camera so maybe they fall into the first
category, but i guess they are encoded and fall into the second
category.
Ah, ok. They are probably either MPEG-1 or MPEG-4
On Tue, 9 Aug 2005, Steven M. Schultz wrote:
Hmmm, not sure if a release can be done a non-admin of the
project. I really really hate forked projects
Yes, forking should be the last thing to do of course.
- better I think to leave it as a 'cvs version'
CVS is real
On Mon, 8 Aug 2005, Steven M. Schultz wrote:
./configure --prefix=/usr --with-avcodec --with-ffmpeg=/usr/include/ffmpeg
--enable-mp3lame --enable-vorbis --disable-dependency-tracking
Well, there are a couple problems with that. For one thing 0.3.0
is quite old. Last release w
On Sun, 7 Aug 2005, Steven M. Schultz wrote:
I know for decoding purposes building smilutils with ffmpeg's
libavcodec and using ffmpeg's DV decoder improved the decoding
quality a lot. I do not know if the same is true for the
encoding.
Wow, that's interesting.
On Tue, 26 Jul 2005, Torsten Mohr wrote:
What could i use best nowadays to encode an MPEG from an
AVI, e.g. for a SVCD or something similar?
Sorry, did I just say: MPlayer can play MPEG files? That should have been:
MPlayer can play anything, and output the video to a yuv stream. It can
also
On Tue, 26 Jul 2005, Torsten Mohr wrote:
What could i use best nowadays to encode an MPEG from an
AVI, e.g. for a SVCD or something similar?
MPlayer can play MPEG files and output to a yuv stream. You can pipe the
yuv stream direcly to the MJPEGTools utilities.
Cheers,
Dik
--
Hi all,
I have two wishes for things in yuvplay which I think are useful to have:
1: Allow yuvplay to quit by clicking the 'close' button of the window
manager.
2: Allow yuvplay to be used in the middle of a processing chain, like
this:
... | y4mscaler ... | yuvplay | mpeg2enc ...
Now
On Tue, 31 May 2005, Steven M. Schultz wrote:
Besides you're quite likely to end up doing something like that anyhow
if you're going to DVD. Depending what tools you use to create the
DVD you may not be able append multiple files together - so if you
were planni
Hi all,
The Blender Foundation and the Netherlands Media Art Institute,
Montevideo/Time Based Arts, have agreed on producing a 3D Animated Movie
Short, to be created with the Open Source 3D suite Blender and other FOSS
tools.
They would like to cooperate with other Open Source graphics proj
On Tue, 24 May 2005, Steven M. Schultz wrote:
"2" means 4:1:1 - and I thought you were dealing with PAL DV which is
one of the 4:2:0 variants.
Ah, so y4mscaler only needs to convert between the PAL-DV variant of 4:2:0
and the PAL-MPEG2 variant that all MJPEG tools van handle.
Hi,
I recently switched from yuvscaler to y4mscaler for reasons known to
some of you ;) and came across a problem: The croma data in the image
that has been processed via y4mscaler looks weird. I compared the
output of the command
smil2yuv -i 2 test.dv | y4mscaler -O chromass=420_MPEG2 -S o
On Mon, 23 May 2005, Steven M. Schultz wrote:
Ok - I am fairly certain I have found the cause of the problem you're
having.
Hacking acceptance of other formats into yuvscaler would be a
major undertaking and that's what I think it would take to avoid
On Mon, 23 May 2005, Steven M. Schultz wrote:
Do you see anything like that 'Deprecated X-tag' message? If you're
using the cvs version of mjpegtools you should see that message.
Yes, I get them all the time :)
bash-2.05b$ smil2yuv test.dv | yuvscaler -I USE_576x512+0+0 -O D
On Mon, 23 May 2005, Steven M. Schultz wrote:
On Mon, 23 May 2005, Dik Takken wrote:
smil2yuv test.dv | yuvscaler -I USE_576x512+0+0 -O DVD | yuvplay
I get a very weird image with noise and a mixed up interlacing pattern.
And when I do:
smil2yuv test.dv | yuvscaler -I USE_576x384+0+0 -O
Hello,
When I do:
smil2yuv test.dv | yuvscaler -I USE_576x512+0+0 -O DVD | yuvplay
I get a very weird image with noise and a mixed up interlacing pattern.
And when I do:
smil2yuv test.dv | yuvscaler -I USE_576x384+0+0 -O DVD | yuvplay
yuvplay fails to play the resulting stream.
Is this a
On Mon, 23 May 2005, Dave Chapman wrote:
Steven M. Shultz gave me the solution to this problem a while ago. You
need to create a bash function to strip out the header line from the
second (and subsequent) yuv streams.
e.g.
[start of script]
Ah, wow. This is very cool. Thanks a lot!!
Cheer
Hi all,
I was just trying to create a single MPEG2 file from multiple DV files,
where each DV file is treated differently (different denoising etc). I
tried to do this:
( scriptA.sh ; scriptB.sh ) | y4mscaler ... | mpeg2enc ...
The shell scripts each produce a yuv stream on stdout. These st
Hi,
I'm having a bit of trouble using yuvdeinterlace. It happens from time to
time that it refuses to process 4:2:0 streams. Even when I use
... | y4mscaler -O chromass=420_MPEG2 -S option=sinc:4 | ...
to explicitely convert the stream from 4:1:1 (DV) to 4:2:0 (DVD) and
eventually feed the resul
On Thu, 19 May 2005, E.Chalaron wrote:
Worth a look ?
http://forum.doom9.org/showthread.php?s=&threadid=93571
Wow, that looks good. Might be very useful for improving DV camcorder
recordings. The screencaps on this site show the typical consumer
camcorder problems due to sub-optimal lighting cond
On Tue, 17 May 2005, Steven M. Schultz wrote:
Works fine for me - just tried it a couple minutes ago:
Gosh, I'm stupid. I did see the special CVS version but I clicked the
wrong link for downloading it...
Thanks anyway,
Dik
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Hi,
It seems that y4mscaler does not build against recent CVS. Anyone
happen to have a patch lying around?
Thanks,
Dik
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Hello,
Does anyone on this list happen to have a shell script to compute color
cast / black level / white level corrections from the output of y4mhist?
I'm not a real awk hero myself so if someone has done this already it
would save me quite a bit of time.
Thanks,
Dik
--
On Thu, 12 May 2005, Steven M. Schultz wrote:
Next, I tried to get rid of all the noise in the chroma data. The CCD
I think that is far too ambitious of a goal. Only way to get rid
of _all_ the chroma noise is to create a black&white video. A more
reasonable goal would be to
On Mon, 9 May 2005, Dik Takken wrote:
I did see this new syntax after entering 'yuvdenoise -h' but it did not
seem to work either. The reason turns out to be that I entered:
... | yuvdenoise -Y 0 -U 0 -V 0 | ...
to try it and it crashed on that, so I got the impression that t
One of my DV files reproducably triggers this error on last week's CVS
checkout:
INFO: [mpeg2enc] Frame4949 P q=8.00 sum act=1886.01297
INFO: [yuvscaler] End of stream!
INFO: [yuvscaler] Normal exit: end of stream with frame number 50!
INFO: [yuvcorrect] End of stream!
INFO
On Sat, 7 May 2005, Steven M. Schultz wrote:
(like inside my home) there is a *lot* of chroma noise in the recordings:
On a 100% grey background you can see small patches of slightly red
colored pixels that appear at random and never last longer than 1 frame.
CCD noise :(Small CCDs (consume
Hi,
In the archives of this list, I read that the yuvscaler version of MJPEG
Tools CVS can do chroma resampling from 4:1:1 to 4:2:0 like so:
smil2yuv -i 2 input.dv | y4mscaler -v0 -O chromass=420_MPEG2 -S option=sinc:4 |
There are two problems here. First of all, there is no y4mscaler in
current
Hi all,
I just couldn't wait any longer for the release of MJPEG Tools 0.7, so I
finally decided to take the jump to the latest CVS version. Most of my
shell scripts were still working perfectly, except for the denoising part.
I use MJPEG Tools to process my digital video camera recordings and
On Sat, 19 Mar 2005, Steven M. Schultz wrote:
On Sat, 19 Mar 2005, Dik Takken wrote:
I was wondering what experience you have with putting static images in DVD
movies (like creating a slide show of digital photographs and text
slides) and displaying them on a TV screen.
My experience has been
On Sat, 19 Mar 2005, Steven Boswell II wrote:
My scripts, and the ones you're generating, should
end up as part of mjpegtools, part of some future
GUI video-editing system, and as notes in our
HOWTO.
Maybe you should take a look at Kommander. With Kommander you can create
GUIs to scripts and comma
On Sat, 19 Mar 2005, Steven M. Schultz wrote:
see the difference between 125 and 129 but we can see the difference
between 16 and 20 I believe.
That's because of the logarithmical response of the human eye. Maybe it
would help if denoising tools and the encoder would also have the
On Sat, 19 Mar 2005, Steven M. Schultz wrote:
On Sat, 19 Mar 2005, Dik Takken wrote:
I don't know y4mdenoise yet, but is it as non-destructive as 'yuvdenoise
-f' is?
"non-destructive"? All filtering is destructive - it changes the
original data. By non-des
On Sat, 19 Mar 2005, Steven M. Schultz wrote:
For conditioning like that I use either 'y4mspatialfilter' (with
relatively high thresholds) or 'yuvmedianfilter' (in its 'fast' mode
with a high weight on the center pixel).
Hmm.. Can't use that one in scripts that I want to rel
Hi,
Two questions about making video streams better suited for encoding with
mpeg2enc:
Question 1:
When encoding video material to MPEG2 using mpeg2enc, it seems that you
can always reduce the required bitrate by using
yuvdenoise -f
at the end of the processing chain, even when the video looks
Hello,
I was wondering what experience you have with putting static images in DVD
movies (like creating a slide show of digital photographs and text
slides) and displaying them on a TV screen.
The problem is that when the odd and even fields differ a lot (white
serif fonts on black background)
On Thu, 17 Mar 2005, Steven Boswell II wrote:
As soon as I get mjpegtools' video quality up to
my standards (and I'm getting REALLY close), I
plan for my next obsession to be bringing
open-source video editing up to snuff. I know of
kino, lvs, cinelerra, and hvirtual, but haven't
looked too de
On Thu, 10 Mar 2005, E.Chalaron wrote:
For using the y4munsharp : it is VERY efficient ! Get a frame, play with it
under gimp, get the right parameters and off you go in the pipe
Nothing to do with the one I found in Transcode ! Have not tried Mencoder,
not being fluent in martian yet !
Transco
On Tue, 8 Mar 2005, Steven M. Schultz wrote:
I think though if we wait for "perfection" the release would be
postponed indefinitely ;) Maybe it would be a good idea to push
1.7.0 out the door and if problems are discovered then release 1.7.1
or whatever.
That would
On Tue, 8 Mar 2005, Steven M. Schultz wrote:
On Tue, 8 Mar 2005, Dik Takken wrote:
I was wondering if anyone is planning to add an unsharp masking
utility to the MJPEG Tools. I use unsharp masking a lot when processing
man y4munsharp
Oh no.. Yet Another CVS-Only (tm) feature... Hint Hint :)
Sure
Hi,
I was wondering if anyone is planning to add an unsharp masking
utility to the MJPEG Tools. I use unsharp masking a lot when processing
recordings of my JVC digital DV camera. Unsharp masking makes a HUGE
difference in image quality.
Unfortunately, the only app that can do unsharp masking o
On Sun, 9 Jan 2005, Steven M. Schultz wrote:
On Sun, 9 Jan 2005, Trent Piepho wrote:
I thought that Dik meant the effective -q never went below 8, even though
it go have gone all the way to 4 and still be within the target bitrate.
Exactly.
If that's happening it's a Bug. It might start ou
On Fri, 7 Jan 2005, Steven M. Schultz wrote:
On Fri, 7 Jan 2005, Nicolas Boos wrote:
Le Thu, 6 Jan 2005 20:27:26 +0100 (CET)
Dik Takken <[EMAIL PROTECTED]> écrivait :
Currently, I need to run mpeg2enc 4 or even 5 times in order to find
the optimal quantiser number (the -q option) that yiel
On Fri, 7 Jan 2005, Steven M. Schultz wrote:
Currently, I need to run mpeg2enc 4 or even 5 times in order to find
the optimal quantiser number (the -q option) that yields the best
quality and uses all available bitrate. That's why I'm currently
Or simply use --cbr and let the encoder vary the -q a
On Tue, 4 Jan 2005, Steven Boswell II wrote:
there's currently a coding frenzy around mpeg2enc and the denoisers.
While this coding fenzy is going on, I would like to know if there is any
interest in implementing a per-GOP multi-pass encoding mode. Currently, I
need to run mpeg2enc 4 or even 5 ti
On Mon, 13 Dec 2004, Martin Samuelsson wrote:
Hmmm, that is puzzling - I thought the card was supposed to be
doing the jpeg compression, almost sounds like some of that is
being done in the host.
Please correct me if I'm wrong here, but... You seem to assume that Dik has
a
On Mon, 13 Dec 2004, Mark Rages wrote:
It is also possible to do simple cut/paste editing on MPEG without
re-encoding. I have a Python library for doing so:
http://mlug.missouri.edu/~markrages/software/python_mpeg/
Wow, that looks interesting. Too bad I don't know any Python. Can this
thing join
Since my computer (Athlon 1400) is too slow to capture high quality, full
res MJPEG video, I consider buying a hardware MJPEG capture card. There
is lots of info in the archives about a lot of famous MJPEG cards, but
most of them are no longer sold in the shop around the corner.
So, I'm looking
On Mon, 13 Dec 2004, Steven M. Schultz wrote:
Keep in mind as well that for MJPEG, if you crank the quality of the
recording up quite high, you'll also need a speedy hard drive to...
Yep - and I think that (more than the speed of the cpu) is what
is causing problems for Dik.
What I see
On Mon, 13 Dec 2004, Richard Ellis wrote:
I want to edit the video after capture, so an MPEG2 capture card is
not an option. The image quality is too low.
Editing is indeed an option: LVE (http://lvempeg.sourceforge.net/).
Something like this is very useful, but when I say editing, I actually
mean
On Fri, 26 Nov 2004, A. Lanza wrote:
Hi list,
i have some avi files (divx, xvid, etc.) arround 730 MB. in size. What i
would like is to convert each one of these files into VCD or SVCD
format, so i can watch it on TV through my home DVD player. Also, i
would like to convert/compress it in a way tha
I think I might have bumped into a problem with the latest stable
mjpegtools. I compiled (emerged, actually) mjpegtools with SDL support,
and SDL has support for both OSS and ALSA. My box uses ALSA.
When I try capturing video, or playing captured video, I observe the
following:
* I start lavre
Hi all,
Some people say that MPEG2 streams joined by DVDAuthor can confuse
some set-top DVD players. What I mean is that you combine multiple MPEG2
chapters into one title, like so:
It is said that not all players can seamlessly play the transitions
between the cha
On Sun, 7 Nov 2004, Ronald S. Bultje wrote:
Hi Steve,
On Sun, 2004-11-07 at 06:27, Steve Tell wrote:
After recording two and a half hours of video with one channel of the
stereo audio missing, I decided that lavrec should display audio level
meters while recording.
(I also decided that I hate 1/8"
On Mon, 1 Nov 2004, Steven M. Schultz wrote:
On Mon, 1 Nov 2004, Dik Takken wrote:
Just something you might want to know about the DCT/iDCT overflow thing
(you might know it already): I managed to trigger this overflow problem at
-q 2 too. So, for braindead encoding purposes, -q 3 is the limit
On Mon, 1 Nov 2004, sean wrote:
That's where is started, but - strangely enough - it won't copy a dvd. It
will copy a cd.
k3b-0.11.17.
I guess you are missing some utility that K3B needs.
I ended up using dd and growisofs.
I guess that could work as well, yes.
:)
sean
---
It seems to me that something must be wrong here. I use these
options for mpeg2enc:
... | mpeg2enc -f 8 -b 9500 -q 1 -a 3 -o output.m2v
Well - one thing that's wrong is using -q 1. Known, in some cases,
to suffer from DCT/iDCT overflow in the MMX/SSE code. Or are you
doing th
On Sun, 31 Oct 2004, sean wrote:
now I want to copy these dvd's. no copyright, just a copy of my own dvd's.
Any good CD/DVD burning application can do this for you. I would advise
you to install K3B which is easy plug 'n play, click 'n run.
google shows me lots of ways around css, but is there an
On Sat, 30 Oct 2004, Steven M. Schultz wrote:
I should try using mplayer to feed the mjpeg file to mpeg2enc and see if
that yields a better mpeg2 stream. If that works, mpeg2enc could benefit
from the MPlayer pp filters as well.
I did try it now. I took a photograph and fed it to a script that
gen
On Sat, 30 Oct 2004, Steven M. Schultz wrote:
I should try using mplayer to feed the mjpeg file to mpeg2enc and see if
that yields a better mpeg2 stream. If that works, mpeg2enc could benefit
from the MPlayer pp filters as well.
Ummm, but mplayer's a _de_coder ;)
Exactly. :)
I guess I'm not
On Fri, 29 Oct 2004, Steven M. Schultz wrote:
This is a task well suited for the various yuv* tools; yuvdenoise, yuvcorrect,
Hmmm, if it's "post encoding" processing you're talking about
would it be better to do that in the encoder rather than the
filtering the input stream prio
On Thu, 28 Oct 2004, Steven M. Schultz wrote:
The other thing to look at is the output of 'mplex'. Mplex prints
out the "Average" and "Peak" rates. You can get those numbers fairly
quickly by specifying "-o /dev/null" to mplex:
mplex -f 8 -o /dev/null input.m2v
I have t
On Fri, 29 Oct 2004, James Bigler wrote:
One thing that has worked very well is to use the 1/2 encoded frame
size (352x480 for 525line systems and 352x288 for 625line systems).
That should have been 352x576 for 625line systems. the 352xN is
a valid DVD frame size
On Thu, 28 Oct 2004, Matto Marjanovic wrote:
>STEP 2:
>
>I use lavtrans to 'grow' a new avi file by adding 'single_picture.avi' to
>itself and repeat that 100 times, like so (pseudo code):
...
Or,
cat picture.ppm | ppmtoy4m -n 100 -r -F 25:1 -I t -L | ...
That would work in this particular case, b
On Fri, 29 Oct 2004, Martin Samuelsson wrote:
A better strategy, albeit more space consuming, would be to convert them into
YUV4MPEG2 (if it still is called that nowadays; the raw YUV files produced by
lav2yuv) instead. If you have more CPU than disk, you could
convert-stream-and-feed-the-encoder v
On Thu, 28 Oct 2004, Steven M. Schultz wrote:
Ah, that's an important detail. It might be a good thing if the man page
would be a bit more clear about this.
Actually it is mentioned in the toplevel (mjpegtools) manpage:
"A quality factor should be chosen that way that the mplex output of
Peak b
The thread about interlaced vs progressive video quality contained a lot
of useful info about how to deal with progressive and interlaced video.
Now I want to try appying it do something useful, I hope. :) Suppose I
want to mix progressive and interlaced video material. For example, I
have a bi
But, the way mpeg2enc prevents the encoded data from going over that
9800 max (for VBR encoding) is by silently increasing the effective
-q value for you behind the scenes. So for the peaks, to keep the
True, BUT - it is NOT "instantaneous"! By the time the encoder
detects that the r
On Wed, 27 Oct 2004, Steven M. Schultz wrote:
that I don't care about filesize, as long as my stand-alone DVD player
will play it. The only restriction I need for that is to use -f 8 and -b <
9700 IIRC.
Oh, it's not just the filesize or AVERAGE bitrate that's going to
be the problem. I
On Thu, 28 Oct 2004, Martin Samuelsson wrote:
On Thursday 28 October 2004 01:45, Steven M. Schultz wrote:
The frames that I feed to mpeg2enc are actually not interlaced, they are
ordinary 'progressive' images. But since I use png2yuv to generate an
Ok - that's what I figured. Now to interlace
On Wed, 27 Oct 2004, Steven M. Schultz wrote:
On Wed, 27 Oct 2004, Dik Takken wrote:
I noticed something strange while playing with mpeg2enc. When I encode a
sequence of frames to progressive mpeg2, the output quality is *much*
better than when I encode the same image sequence to progressive mpeg2
Hello,
I noticed something strange while playing with mpeg2enc. When I encode a
sequence of frames to progressive mpeg2, the output quality is *much*
better than when I encode the same image sequence to progressive mpeg2.
It seems to me that something must be wrong here. I use these
options for
Here are two more problems that I discovered while working with
glav/lavplay:
* When you play a very short avi with glav, glav exits when playing is
finished. When you play longer avi files, glav stays open and I can edit
the video. This should also be possible for short avi files.
* You can't
On Tue, 26 Oct 2004, Bernhard Praschinger wrote:
Hallo
I fixed it. Apparently, the merge edit list did not work because I did not
specify the exact length of each fragment. I thought lavtrans would figure
that out by itself. Now I use lavinfo to get the frame count and use that
info to generate a c
On Fri, 22 Oct 2004, Dik Takken wrote:
I fixed it. Apparently, the merge edit list did not work because I did not
specify the exact length of each fragment. I thought lavtrans would figure
that out by itself. Now I use lavinfo to get the frame count and use that
info to generate a correct edit
Hello,
I am trying to cut MJPEG AVI files into pieces and then put them back
together again. I need it to do processing on parts of the video using
external software (ImageMagick). I cut the pieces using this command:
lavtrans -o piece1.avi -f a cut.eli
and the edit list looks like:
LAV Edit Lis
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