http://permalink.gmane.org/gmane.comp.video.mjpeg.user hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11319 <pre> 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. ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ </pre> Kris Hermans 2012-04-30T19:40:38 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11318 <pre>Good afternoon Jim, Sorry, I haven't been in this "business" for &gt; 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 Servus, Gernot GPU. 3D Vision. Europe. Future. Now. Drop by: www.mpi-sb.mpg.de/~gziegler - www.geofront.eu --------------------------------</pre> Gernot Ziegler 2012-03-18T14:25:43 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11317 <pre>Hallo 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. Glad to hear, I think Ubuntu has precompiled packages. 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 You basically have to play back the video and feed it into yuv2lav or mpeg2enc. auf hoffentlich bald, Berni the Chaos of Woodquarter Email: shadowlord&lt; at &gt;utanet.at www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The mos</pre> Bernhard Praschinger 2012-01-18T16:47:06 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11316 <pre>Hallo 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&lt; at &gt;utanet.at www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------------------------------ RSA(R) Conference 2012 Mar 27 - Feb 2 Save $400 by Jan. 27 Register now! http://p.sf.net/sfu/rsa-sfdev2dev2 </pre> Bernhard Praschinger 2012-01-16T17:18:50 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11315 <pre>Hallo 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): &gt; 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&lt; at &gt;utanet.at www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d </pre> Bernhard Praschinger 2011-11-22T16:45:15 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11314 <pre>Hi Gernot, Am 19.11.2011 20:04, schrieb Gernot Ziegler: The DHT segment is constant. So it would be possible to insert some non changing data into the broken frames. The question here is: Where to insert? I really have no idea and so far found nothing about the internal structure of jpeg images. Regards Christian </pre> Christian Verbeek 2011-11-20T08:40:21 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11313 <pre>Hej Christian, sorry for disappointing you, but AFAIK, JPEG has different DCT coefficients, and thus you can't recode JPG frames into MPEG1. Regarding missing DHT segements, I don't know more than: You could try inserting the DHT segment from an encoded JPEG into the "broken" frames arriving from the stream? Or does the DHT segment differ for every frame? But that is the only "hack" I could think of (without getting deeper into the subject, I left it 10 years ago) Sorry to be of so little help, Gernot Servus, Gernot GPU. 3D Vision. Europe. Future. Now. Drop by: www.mpi-sb.mpg.de/~gziegler - www.geofront.eu ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d_________________________</pre> Gernot Ziegler 2011-11-19T19:04:33 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11312 <pre>Hi, Am 18.11.2011 10:27, schrieb Christian Verbeek: Well if you are able to decode the image without DHT (which means, that some kind of default Huffman table is used), you might as well be able to add the DHT segment to the encoded JPEG data. No. Although the JPEG compression is based on the same principles as MPEG I-Frames, there are fundamental differences. Burkhard ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d </pre> Burkhard Plaum 2011-11-18T11:19:53 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11311 <pre>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 comi</pre> Christian Verbeek 2011-11-18T09:27:20 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11310 <pre> On 15/11/2011, at 4:47 PM, sam wrote: ffmpeg can be used to mux without encoding. this is what I used to mux my mpeg files to transport streams to work with my IPTV system. ffmpeg -i file.mpg -acodec copy -vcodec copy stream.ts Since yours is a special case, you will probably need to write some code, I recommend looking at libav, which is the library behind ffmpeg. http://libav.org/ Mark ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 </pre> Mark Heath 2011-11-15T21:01:44 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11309 <pre>Hi Mark, Thank you for your reply, I have hardware encoder , which gives IP out , and it has 8 channels , each channel gives me 2 ts. ffmpeg will encode again , then it is no use of using my encoder. my case to mux n number of ts into single ts , which means MPTS , contains number of programs with PIDS. Sending the data and receiving the data is not a problem , i can do this by UDP port , i have tool to receive IP IN and OUT. Regards Sam I only thought that mplex could produce program streams. I had to use ffmpeg to produce transport streams for my IPTV system. Have you tried looking at the libav libraries? (what ffmpeg is based on) I know that they can produce transport streams. Not sure how easy it would be to write a stand alone app. Mark On Tue, Nov 15, 2011 at 10:27 AM, Mark Heath &lt;mjpeg0&lt; at &gt;silicontrip.org&gt; wrote: </pre> sam 2011-11-15T05:47:04 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11308 <pre> On 14/11/2011, at 3:37 PM, sam wrote: I only thought that mplex could produce program streams. I had to use ffmpeg to produce transport streams for my IPTV system. Have you tried looking at the libav libraries? (what ffmpeg is based on) I know that they can produce transport streams. Not sure how easy it would be to write a stand alone app. Mark ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 </pre> Mark Heath 2011-11-15T04:57:41 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11307 <pre>*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 &lt;file1.ts&gt; &lt;file2.ts&gt;.....&lt;filen.ts&gt; &gt; 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* ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/s</pre> sam 2011-11-15T04:19:15 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11306 <pre>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 RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1_______________________________________________ Mjpeg-users mailing list Mjpeg-users&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users </pre> Gernot Ziegler 2011-11-14T18:19:53 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11305 <pre>Hallo sam wrote: I think that is not possible to mux in realtime. I think there is a big misunderstanding with that mplex can do and what you intend to do. mplex can multiplex (mpeg) audio, (mpeg) video and subtitle together with control information so the resulting stream corresponds to the mpeg format. And can be played back by the typical mpeg player either hard or software. For more help it would be very helpful to know how the *ts streams are created. .ts is often used for transport streams from digital satellite receivers, which are already multiplexed. And can't be feed into mplex. Who is Oskar ? He is no member of the mjpegtools project ;) auf hoffentlich bald, Berni the Chaos of Woodquarter Email: shadowlord&lt; at &gt;utanet.at www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 </pre> Bernhard Praschinger 2011-11-14T16:48:17 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11304 <pre>*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 &lt;file1.ts&gt; &lt;file2.ts&gt;.....&lt;filen.ts&gt; &gt; 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* ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/s</pre> sam 2011-11-14T04:37:55 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11303 <pre>*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 &lt;file1.ts&gt; &lt;file2.ts&gt;.....&lt;filen.ts&gt; &gt; 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* ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/s</pre> sam 2011-11-14T04:41:34 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11300 <pre> On Fri, 23 Sep 2011, Alan Cox wrote: I disagree. I do not see how having a thread which obtained a lock be the one which releases it causes any performance change. The same amount of unlocking is done. Better name would defined(NON_PORTABLE_MUTEXES) linux is the only system I've encountered which doesn't use the concept of thread ownership. And it was a big pain to port a program written to use the 'ownerless mutex' concept to systems which did use that concept. If the program is written to use the concept of thread ownershio (by turning on either DEBUG_MUTEXES or NON_PORTABLE_MUTEXES) then WHERE is the performance difference coming from? Turning that option off would make it easy to produce non portable threaded code. To me it is an egregious error for a thread which did not lock a mutex to unlock it -that's the way it's been for as long as I can remember. It has, in MY experience, always been a logic or design error for a thread to unlock a thread of which is it not the</pre> Steven M. Schultz 2011-09-23T17:03:27 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11299 <pre> A program the relies on undefined behaviour is broken. It's a very sane default because the performance difference is astronomical Far better is if (defined __linux__) &amp;&amp; defined(DEBUG_MUTEXES) then you can build for debug or for performance as needed with a compile option. Even better still for many applications is not using pthreads in the first place. The fundamental models pthreads use are basically 'everything is shared, nothing is locked unless you remember to do so' and there is no object access v locking validation. In short it's got default behaviour of 'break invisibly' Java at least tried to get chunks of this right. ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2dcop</pre> Alan Cox 2011-09-23T15:55:56 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11298 <pre> I think this talk of threaded applications says it's time for a reposting of my caution and plea for portability... Threaded programming is hard. PORTABLE threaded programming is very hard. Two things to keep in mind: 1) Check ALL return values and status indications (I've seen too many programs *assume* that pthred_mutex_unlock() can not/will not fail) and 2) all the world is NOT linux (as much as some might think otherwise ;)). With those two cautions here's what I've posted several times over the years (and is what mjpegtools uses in mpeg2enc). Happy reading :) With linux a mutex can, according to the manpages, be of type 'fast', 'recursive' or 'error checking'. The 'fast' type has no concept of thread "ownership" and any thread can unlock any mutex *even if it is not the thread that locked it*. On the other hand the 'error checking' type does enforce mutex "ownership" and only the thread that locked a mutex may unlock it, attempting </pre> Steven M. Schultz 2011-09-23T14:47:10 http://permalink.gmane.org/gmane.comp.video.mjpeg.user/11297 <pre> On 23/09/2011, at 11:37 AM, Steven Boswell II wrote: I assume I'd need to use glib but it appears to be broken on my system. I also tried the gcc atomic operations but I've only got gcc 4.0.1. I've also sig_atomic_t but I've got no idea if it's reading and incrementing as an atomic action. The read and increment is such a short duration I cannot get it to break even without locking. Doesn't look like there is a simple atomic method I can add to the code. Are you making your output frame solely from the input frame(s) ? Or are you using pixels from the output frame to generate other pixels ? Or updating the frame data in place? If you aren't using any of the data from the output frame then there won't be any artifacts. Just remember to pass in the entire input frame into your worker thread, not just a slice. But you only need to generate the output pixels for the slice. Does this make sense? Mark------------------------------------------------------------------------------ All of the dat</pre> Mark Heath 2011-09-23T04:58:25 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.video.mjpeg.user