latest windows version broke?

Hi,

I downloaded mjpegtools-2.0.0ext-mingw-bin.tar.bz2.
MD5 and SHA1 are correct, but extraction fails:

My output:
prompt$ bunzip2 mjpegtools-2.0.0ext-mingw-bin.tar.bz2
prompt$ tar xvf mjpegtools-2.0.0ext-mingw-bin.tar
bin/
bin/anytovcd.sh
bin/jpeg2yuv.exe
tar: Skipping to next header
tar: A lone zero block at 2375
tar: Exiting with failure status due to previous errors

Can anyone upload a non-broken version?

kind regards,

Kris.
 		 	   		  
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Re: MJPEG Transcoding - commercial products

Good afternoon Jim,

Sorry, I haven't been in this "business" for > 5 years - at that time, 
MJPEG was hardly standardized; nowadays, it seems like there are various 
standards?

What do you mean by stream-stream transcoding - unchanged copying of the 
JPEG frame content from one stream format to the other? I am not sure that 
this is possible very often - the MJPEG stream formats might expect 
slightly different JPEG encoding options.

I am not aware of any transcoders that would do that - I would imagine 
www.mainconcept.de to be a typical "suspect", or maybe
http://en.wikipedia.org/wiki/VirtualDub
http://en.wikipedia.org/wiki/MEncoder
(see 
http://en.wikipedia.org/wiki/List_of_video_editing_software#Open_source_software 
for a complete list)

I have also added your e-mail to the mjpeg-users mailing list - maybe 
someone else has good ideas.

Good luck!
   Gernot

> I’ve found your MJPEG sourceforge site through a search looking for MJPEG
> Transcoding products.  I hope you might know of companies who have commercial
> products capable of stream-stream transcoding of MJPEG video (MJPEG D1 to H.264
> SD-3).
>

Re: lav2yuv scene detection

Hallo

> I've used http://sourceforge.net/projects/mjpeg/files/mjpegtools/2.0.0/mjpegtools-2.0.0.tar.gz,
> installed it by command `./configure&&  make&&  sudo make install` and
> got error "error while loading shared libraries:
> libmjpegutils-2.0.so.0: cannot open shared object file: No such file
> or directory" when calling 'lav2yuv'
But with your distribution you did not have installed the mjpegtools 
before ?

Wen you go into the directory where you did run the configure and make, 
please go into the utils/.libs directory and check if there are the 
files that start with libmjpeg*

Was everything compiled sucessfully ? If not please run configure again. 
It would be interesting to find out if it was a compilor error, or 
something different.

> Then I find a package
> http://sourceforge.net/projects/mjpeg/files/mjpegtools/2.0.0/mjpegtools-2.0.0-1.i586.rpm
> and installed it on Ubuntu 11.04  by command `alien -i *.rpm`. Now all
> is ok.
Glad to hear, I think Ubuntu has precompiled packages.

> Another question, google didn't helped me: how I can convert any video
> file to mjpeg format, or flv to mjpeg?
Mplayer is your friend.

In the mjpegtools doumentation you should find the hints and examples:
http://sourceforge.net/apps/mediawiki/mjpeg/index.php?title=Creating_videos_from_other_sources

Re: lav2yuv scene detection

Hallo

> I found out that lav2yuv has an option for automatic scene detection:
> "-S list.el  Output a scene list with scene detection". I've installed
> last version of mjpegtools, but the option is missing. I wonder what I
> should do to use the option and how exactly scene detection works in
> lav2yuv?

Can you please provide details information what you did install on which 
os, and the command you did execute.

How did you find out that this option is missing ?

auf hoffentlich bald,

Berni the Chaos of Woodquarter

Email: shadowlord <at> utanet.at
www: http://www.lysator.liu.se/~gz/bernhard

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Re: Query on mplex MPTS to SPTS

Hallo

> /*I am downloaded mplex , to mux n number of programs to single ts out ,
> means mpts to spts , i have done but i cant see any PID values in TSReader
> and StreamXpert Software , also cant ply the videos in VLC Player , but i
> can able to play video by giving ProgramID in mplayer , can please help me
> out , i can give access to my server , to sort this problem .
> */
Can you please post the exact url where you have downloaded mplex.

For further help please post information about the source stream.  For 
example with mplayer (or some other tool):
 > mplayer file1.ts
TS file format detected.
VIDEO MPEG2(pid=3051) AUDIO MPA(pid=3052) NO SUBS (yet)!  PROGRAM N. 28655
VIDEO:  MPEG2  544x576  (aspect 2)  25.000 fps  9000.0 kbps (1125.0 kbyte/s)

The output of mplex when you multiplex the streams would also be very 
helpful. Also the command you use for multiplexing the stream.

auf hoffentlich bald,

Berni the Chaos of Woodquarter

Email: shadowlord <at> utanet.at
www: http://www.lysator.liu.se/~gz/bernhard

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mjpg webcam image to jpg

Dear all,

It might be that my question is a bit out of topic but I think you guys
might be able to help.

You maybe know that a couple of modern webcams output some kind of
motion JPG image. The Logitech C905 webcam does so. The data is a
jpg-image without DHT segment. With the help of google I managed to
patch libjpeg to be able to decode these crippled jpg-images. The code
can be found here

http://svn.openrobotino.org/common/trunk/lib/rec/cv_lt/jpeg_dec.cpp

Still it would be nice to take the webcam's output and stream it
directly to a web browser. But because of the missing DHT segment
browsers are not able to decode the data. My work around right now is to
decode the data with my patched libjpeg and encode again as real jpg.
This works but puts my embedded platform to almost 100% cpu load.

The question is if there is a way to insert the missing DHT segment to
the mjpg data without the need of decoding/encoding the image. Or is
there a simple way to make a mpg1 stream from these mjpg single images
coming from the webcam?

Any help is highly appreciated
Regards
Christian

--

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Help reading Muxing TS

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Re: Help reading Muxing TS

Hi Sam,

Sorry, I haven´t worked with the software for a long time (approx. 9 
years), so I know very little about it - at that time, it was not always 
possible to demux all transport streams, simply because the standard was 
too vague.

I can only refer to the mailing list mjpeg-users, which I have CC:d above.

Sorry that I can´t be of any more help,
   Gernot

> *Dear Friend ,*
>
> I am a professor , i want to do it for my research project for
> students.partial please help me.
>
> I want to Multiplex n number of TS using *mplex*, i got downloaded from *
> mjpeg.sourceforge.ne*t and installed , how to mux continuously Real time.
>
> Command :* iso13818ts <file1.ts> <file2.ts>.....<filen.ts> > Muxout.ts  *
>
> the output "*muxout.ts*" not playing in al lvideo player but i can able to
> play the video in *mplayer* by giving specific *ProgramID* of TS file.And
> also i cant see any PID Values in *TSReader *and *Streamxpert* Software, i
> think it has no SI table , how to generate the Mux out TS with SI table ,
> which should play in all video player such as vlc player.
>
> I can give *Remote login to my mux server* , do can you help me, i also
> mailed to Oskar , author of *mplex* softweare but he was busy.
>
> *Thank for reading mail*
>
> *Regards
> Sam*

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Re: writing multi threaded code

Cine scan films such as 8, 9.5, super 8 , 16 mm etc ...
Either in 8 or 16 bits.

Cheers
E

On 09/23/2011 02:07 PM, Mark Heath wrote:
>
> What format is using RGB?
>
> Mark
>

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writing multi threaded code

Hi Guys,

I'm wondering if anyone has some skeleton C code for writing  
multithreaded filters.

Similar to this kind of pseudo code;

while not end of file {

	read frame

	create threads (number of CPUs)

	for y = 1 to height {

		while no available threads  { wait for a thread to finish; }

		run in thread { for x = 1 to width { process pixel} }
	}
	write frame
}

I've written a temporal bilateral filter and an nl-means filter and  
they are slow, so was looking to speed things up on my multi cpu  
machines.

If not, I'll see if I can generate my own skeleton.

Thanks
Mark

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