[Mjpeg-users] Streaming format?
I'm probably a bit off topic here, but someone might know the answer. What video format can I encode to which is suitable for streaming from a free software platform? I'm really after a solution which allows for a free server and free codec/plugin for streaming over an Intranet. Quality and bandwidth performance are important, but no so much as being free from patents and licence fees. The server will be Linux and there will be clients of all OS flavours. Video is going to start off life as an input from a camcorder into my DC10+. What are my options? There don't seem to be too many... :o( --- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almosthttp://www.thinkgeek.com/sfshirt ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] mjpegtools on Newsforge
On Monday 08 November 2004 12:39, Steven M. Schultz wrote: Howdy - In case you hadn't already seen it: http://www.newsforge.com/article.pl?sid=04/11/04/1458235 Nice article. Cheers, Steven Schultz I just couldn't bring myself to plug it myself... :o) --- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588alloc_id=12065op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Without the hardware....
Just as a matter of interest, what are the principal uses, if any, of the MJPEG Tools to someone who doesn't have a supported capture card? --- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Without the hardware....
Just as a matter of interest, what are the principal uses, if any, of the MJPEG Tools to someone who doesn't have a supported capture card? At first I thought that was a troll ;) :) No, definitely not a troll! I was considering writing a piece for Newsforge (or similar) on the MJPEGTools project. I've had a few articles published there and have the ear of the editor, so to speak. The thing is, I only have a DC10+ card, which are increasingly difficult to get hold of these days. I have been blissfully unaware to date of what people might do with the toolset without such a card, hence the question. Since I've started asking stupid questions, I might as well continue, in the spirit of research. :) Same here. And even when using a WinTV card with 'fxtv' (http://people.freebsd.org/~rhh/fxtv/) on a BSD system I was using mjpegtools to perform the processing of the data. After seeing the difference between what a Bt878 and a Canopus ADVC100 (although today I'd get the ADVC300) produce I pulled the WinTV card out and put it in a static bag ;) /me goes off to google to read about these things. What software do you use to capture from these cards, and what format do they capture in? Assuming they don't capture to MJPEG, you presumably have to convert to MJPEG (in a non-lossy way) in order to use the tools...? Exactly. The code for capturing in mjpegtools is a relatively small portion of the total - the bulk of the code resides in the (wide) variety of filters (couple denoisers, medianfilter, stabilizer, and so on), scaling, and especially the encoding and multiplexing (mplex is often regarded as the standard against which others are compared). Yep, OK, but I assumed these tools only worked on MJPEG files, and you only got MJPEG files from a DC10+ card or similar. Shows what I know... :o} --- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588alloc_id=12065op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Without the hardware....
I use 'dvgrab' to capture the data (12GB/hr) and then 'kino' to edit (cut out the commercials, splice new scenes in, whatever). Kino can capture of course but I prefer a commandline/batch method of bulk capture. OK, so can I basically assume that dvgrab is like a DV version of lavrec; that kino is like a DV version of lavplay/glav; and that smilutils has something like lav2yuv? And that the output of dvgrab/kino/smilutils can be fed into the MJPEG suite of utilities much like I do with the output from lavrec/glav/lav2yuv? --- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588alloc_id=12065op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Where to denoise in 3 pass encoding
mencoder -audiofile out.mp3 -oac copy ... just prepare the .mp3 or whatever ahead of time and use that. OK. That appears to mean the lav2wav-to-mp3 stage is still required, which is what I thought. I still have it in my script. As an experiment you might try doing a one pass encoding to compare against the results of a 2 pass. It might be possible you don't see much, if any, difference and can thus save a lot of time. Yes, I've been through that test and your implication is correct - that second video pass achieves no visible change (to the video or filesize) at the low bit rate setting I'm using. I also found a lot of tips in the mplayer docs and archives which detail various tweaks which they claim give better quality output. I've tried them all and they all just add to the encoding time! I guess at higher bit rates and file sizes they will add something under some circumstances, but I'm back to where I started 3 days ago: capture with -d2, then use mencoder to pass the audio, then again to do one pass of the video. I guess sometimes life just isn't as complicated as we think it should be... :o) --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Where to denoise in 3 pass encoding
But since it sounds like the goal is computer playback in small areas (384x288 or so) this might be worth thinking about: For lower (VCD) resolution I think it's better capturing at the 1/2 size (384x288 for PAL) to begin with. This will be progressive (since it's only 1 field) and then you don't have to deal with deinterlacing at all. That would be less data captured, less to denoise, and no scaling - quite a speedup factor when all of those steps are taken into account. That's pretty much exactly what I'm doing now. I get there in the end... :o) I've also discovered that denoising make no difference either to the quality of the final video or to the size of the file. Since I'm capturing video which originates from a digital TV receiver the quality is pretty good in the first place. The video is actually football (soccer to some) so it's constant fast motion. Anything lower than VCD resolution means you can't really see the player numbers or faces, so I was trying to get the best picture possible from low bit rate. 500kbs is still coming out at 300MB per hour. I was trying to get closer to 200MB per hour but trial and error is proving a rather slow process! While I'm asking, here's another quick question: can I do anything with the sound to lower the file size? It's just crowd noise and commentary so I can drop the quality right down if that's possible. I was just trying to work out what lav2yuv actually does with the sound. My command: lav2yuv ... | mencoder -oac copy ... appears to be giving me MP3 sound, which implies lav2yuv puts out an MP3 sound track. Is that right, and can I tune it? --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Where to denoise in 3 pass encoding
I'm using a tuned version of the 3 pass lav2avi.sh script which basically does: The MPlayer/mencoder developers have deprecated (and highly discourage the use of) the 3 pass method and recommend the use of the 2 pass method. The lav2avi.sh script hasn't been updated/rewritten. The MPlayer docs describe the 2 pass method like this: mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=1 -oac copy -o movie.avi mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=2 -oac copy -o movie.avi or like this: mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=1 -oac mp3lame -lameopts vbr=3 -o movie.avi mencoder dvd://2 -ovc lavc -lavcopts vcodec=mpeg4:vpass=2 -oac mp3lame -lameopts vbr=3 -o movie.avi but, er, that doesn't appear to make sense when the input is coming from lav2yuv because there's no sound. So what is the two pass method now recommended? 1 audio pass and 1 video pass, or 2 video passes and some voodoo with the sound I don't know about? Sorry to repeatedly ask noobie questions, but google isn't strangely unhelpful on this topic. Probably because there are so many tools and methods of doing things. :o} --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Where to denoise in 3 pass encoding
I'm using a tuned version of the 3 pass lav2avi.sh script which basically does: lav2wav ... lav2yuv ... | mencoder ... lav2yuv ... | mencoder ...vpass=1... lav2yuv ... | mencoder ...vpass=2... I wanted to put a denoise step in there. The options seem to be, 1) stick a denoise on each lav2yuv step and do the denoise 3 times 2) stick a denoise on the last lav2yuv step and hope it doesn't screw the 2 video passes too much 3) make a separate (and enormous) yuv file 4) denoise and put the resultant yuv through yuv2lav to get back to a sensible file I can put into mencoder 3 times. (4) seems the most reasonable idea. Is that right, or did I miss something more obvious? --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] VCR capture
The HOWTO says that -d 2 is already better than VHS video (a *lot*!). Does that mean that if I'm capturing from a VHS source I will gain nothing from using -d 1, and should always use -d 2? Or does it mean that given a theoretically perfect source, capturing with -d2 and then playing back would give a better picture than capturing with a VHS VCR and playing back? I am capturing from VHS tape and intend to have the output display on a monitor at about 512x384. To date I've captured using -d 1 and scaled down. If -d 1 gives no benefit when capturing from VHS, would I do better to capture at -d 2 and scale up? (By do better I really mean reduce processing time - this old PIII-500 box takes an overnight run to achieve pretty much anything :o}) --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Interlacing bewilderment
So you have missed in the howto the section: Creating MPEG2 Videos, and there the subsection: Encoding destination TV (interlaced) or Monitor (progressive) ? No, but that's a case in point. It doesn't really tell me what I need to know. I know my source (from a VCR) is interlaced. I want to play it on a computer screen in divx form, which, as far as I can tell, means I should deinterlace it. Is that right? The HOWTO says: If you have an interlaced source (broadcast) you can encode it as interlaced stream. Or deinterlace the stream and encode it as progressive stream. If you deinterlace it with yuvdenoise -F, you will lose details. Well, I do have an interlaced source, so this tells me I can go either way, but if I deinterlace I will lose details. OK. Two sentences later the HOWTO says If you only want to play it back on the Monitor (progressive display) the picture looks better when playing it back if it is deinterlaced. Which appears to contradict what is said above: deinterlacing looses details, but looks better when playing it back? When you record from a VCR at halfe size, you have no interlacing. So you do not need to think about that. OK, at least that's easy! :o) At full size, you have interlacing, for a monitor you might want deinterlace, else leave the interlacing as it is. Er, yes, those are my choices - deinterlace or leave it interlaced! That statement sums up my confusion perfectly - it tells me my options but gives me no clue which I should do! The default values should be rather failsave. And create a interlaced movie. Right, to date I've just gone with the default values. I'll experiment some more but it's a painful process with an old PC. I can ask one straight question though, which might attract a straight answer: will the denoise process run faster on a deinterlaced stream or an interlaced one? --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Interlacing bewilderment
I'm creating video which is designed to be viewed on a computer monitor, normally Windows based, but it could be any OS really. The source is a VCR or video camera through a DC10+ card. To date, I've ignored the issue of interlacing completely. :o) I'm aware that the input video will be interlaced, but that's as far as my knowledge goes. I've tried to read a bit on the issue, but everything I can find, including the MJPEG tools HOWTO, seems to assume the reader has at least a bit of a clue, which I don't. For example, should my final output (destined for a PC screen) be interlaced? I assume not, but I've no idea really. I'm not sure if interlacing is considered a good thing or bad, whether it gets in the way of operations like denoise or whether it helps. Is it good to leave it in as long as possible or get rid of it at the first opportunity? Should I even care? I haven't to date and I seem to get by... :o) My use of the tools eventually produces a Divx file which plays fine on Linux and Windows, so that's good. I don't know if that output is interlaced; whatever it is, it came via the default options (with regard to interlacing) and the various players I've tried deal with it. I feel it's now time to get a clue. Can someone start me off with interlacing basics (like the questions posed above) and tell me where, in the pipeline of capture, scale, denoise and encode, should I worry about interlacing? --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 24. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Prepending JPEG frames to a video
I've been reading the bit of the HOWTO where it explains how to convert some JPEG frames into a YUV stream. Seems straightforward enough, but I can't quite get my head around my exact task. I have a lav file, captured with a DC10+. I intend to convert it to AVI using a specially tuned version of the lav2avi.sh script. I have a single JPEG image containing a title/copyright/disclaimer sort of page which I'd like to throw up for 5 seconds before the video starts. No sound is required over these 5 seconds. What's the easiest way to do this, ensuring video/audio sync, etc., still remains spot on? Ideally I'd still end up with a single .eli file which I could use from the lav2avi.sh script. --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Is lavc Divx?
Someone just asked me what flavour video the lav2avi script output is. I know it uses the mencoder lavc codec, which I assumed was Divx. Now I come to think about it, I don't know if that's true. I couldn't actually define what lavc or divx actually are, let alone if they are the same thing. Are they one and the same? --- This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM. Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] JPEG-MMX compile errors
Are you saying that you didn't install the newly compiled mjpegtools and the original SuSE package is still installed? Then you are uing the original (old, broken?) shared libs also! I would guess that won't work. Uninstall SuSE's mjpegtools and install yours! No, I installed mine into /opt. the normal SUSE version will be used unless I set the PATH and LD_LIBRARY_PATH to point to mine first. There is no noticeable difference between the versions but I'll probably use mine from now on. As Steven said, there are tools in there which SUSE don't supply. Besides, it's sometimes nice to know exactly where things come from. :o) --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047alloc_id=10808op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Sound problem
On Saturday 04 September 2004 16:29, Ronald S. Bultje wrote: Might be. Scientifically, I'm not completely convinced yet on what the problem is: 1. you record several times, 2. you play back several times (all fine so far), 3. you record one more and 4. you play back (crackles), restart (normally solves) and it still crackles. Now try playing one of your videos from step 1-2 and see if it doesn't crackle, and *then* I'm convinced that 2. is breaking 3. ;). I followed that procedure and playing the video from step 1-2 does not crackle. glav appears to play back the file correctly (i.e. what is on disk); the problem, AFAICS, is that lavrec records crackles if it is run after glav and before the sound system is restarted. That doesn't, however, tell me that 2. is an actual problem. I know that glav/lavplay do some weird stuff. We use mmap() for playback because it's an efficient way of using hardware memory. Most applications simply use write(). Maybe your particular driver cannot handle that. In that case, file a bug report at the ALSA team to fix it (http://alsa-project.org/). We cannot fix their bugs and we shouldn't work around them, imo. Indeed, but I can see how the conversation would go if I report this to the ALSA guys: Me: I record using lavrec and it records correctly Them: OK Me: I play back using glav then recording doesn't work properly anymore Them: What if you play back using mplayer instead of glav? Me: Then recording works correctly Them: So it's glav causing the problem? Me: Er, yes Them: So why blame our driver, why not just fix glav to work properly (like mplayer, for example)? Me: Er... The fact glav doesn't screw other sound cards suggests it's your driver Them: The fact that with mplayer everything works correctly suggests you should fix glav ...and so on. ;o) I'm not suggesting that glav is broken, or that the audio driver is broken. I don't know enough about either piece of software to have an opinion. For the time being I'll use mplayer to check my MJPEG files and reset the sound driver before running lavrec after I've used glav. That will be a good enough work around until I can get a new sound card! --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047alloc_id=10808op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] JPEG-MMX compile errors
I thought I'd try to compile the MJPEG tools from source, rather than relying on the SUSE-9.1 supplied versions. I downloaded JPEG-MMX-0.1.5 from Sourceforge and did the './configure' and 'make' as described in the mjpegtools README. I get this error: gcc -o djpeg djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o cdjpeg.o libjpeg-mmx.a libjpeg-mmx.a(jidctint.o)(.text+0x46): In function `domidct8x8llmW': : undefined reference to `fix_054n184_054' libjpeg-mmx.a(jidctint.o)(.text+0x50): In function `domidct8x8llmW': : undefined reference to `fix_054n184_054' libjpeg-mmx.a(jidctint.o)(.text+0x5a): In function `domidct8x8llmW': : undefined reference to `fix_054_054p076' libjpeg-mmx.a(jidctint.o)(.text+0x64): In function `domidct8x8llmW': : undefined reference to `fix_054_054p076' ... and so on for several pages. What did I miss? --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047alloc_id=10808op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Capture problem on SUSE-9.1
I had some problems with SuSE precompiled binaries on a 9.0 distribution. After 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. Yes, SUSE don't have a good track record in this department. However, a self compiled mjpegtools does exactly the same thing as the SUSE ones, so I don't think they are to blame in this case. --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047alloc_id=10808op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Sound problem
I tried recompiling my kernel without pre-emption, but it made no difference. I've left it off for the time being. I tried recompiling the mjpegtools, and that made no difference. I've had the mjpegtools working fine on this machine previously using the OSS, as opposed to ALSA which it now uses, so I tried pulling ALSA out and putting the deprecated OSS drivers back in. I got into kernel module dependency hell, so I backed out of that route. I presume it shouldn't make any difference. So have you tried to record from the SB16 with some other applications like arecord ? I have now, and I can't get a peep out of anything! 'arecord' and xawtv's 'record' utility run OK, and I can hear the sound via the line-in as it's recording, but playing back the resultant WAV file results in silence. I can't get anything from the microphone input either. That used to work. Maybe you can try to use the read mode. Tried that, no difference. To make soure that the sound card does not make problems please also try to record without sound (-a 0) and tell us that if lavrec still behaves strange. You're spot on here: using -a 0 stops the lavrec capture getting upset. The only drawback is, well, no sound! I did find something interesting though: the first lavrec capture I do after a reboot works correctly. The sound doesn't come out with the pulsing and the video doesn't stop recording. I've tried it several times with an 'rcalsasound restart' in between and each time it works fine. The first time I tried a second capture without resetting the sound system: crackle, crackle, crackle... A bit later... In fact, the problem seems to be with glav. I reset the sound system and recorded several clips, one after the other with no resets. I then play them back using glav and they're all perfect. I record one more and it comes out with crackles. I reset the sound system and play it again - it still crackles. I appears that glav exits leaving the sound system in a state where lavrec records sound incorrectly until the sound hardware is reset. Is that possible? --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047alloc_id=10808op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Capture problem on SUSE-9.1
I'm running the 1.6.2 version of the tools as found in SUSE-9.1 for IA32. I have a self complied 2.6.7 kernel, but other than that it's all out of the box SUSE. I've used the tools for years, on and off, but this is the first time I've tried to use them in anger since upgrading to the 2.6.x kernel. I'm having a problem capturing from my DC10+ card with the command: lavrec -v2 -f a -i P -d 1 -q 95 -a 16 -s -w -l 75 test2%02d.avi running as root. I works fine for about 12 to 15 seconds, then appears to lock up. Adding the debug command (as seen above) show this: ... 0.00.14:10 int:040 lst: 12 ins: 0 del: 29 ae: 0 td1=0.016 td2=-0.015 --DEBUG: [lavrec] Syncing on frame 14 --DEBUG: [lavrec] Queueing frame 14 0.00.14:11 int:604 lst: 12 ins: 0 del: 29 ae: 0 td1=0.010 td2=-0.040 --DEBUG: [lavrec] Syncing on frame 19 --DEBUG: [lavrec] Queueing frame 19 0.00.14:12 int:003 lst: 12 ins: 0 del: 29 ae: 0 td1=0.003 td2=-0.066 --DEBUG: [lavrec] Syncing on frame 1 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Queueing frame 6 0.00.15:01 int:072 lst: 25 ins: 0 del: 30 ae: 0 td1=0.192 td2=0.016 --DEBUG: [lavrec] Syncing on frame 14 --DEBUG: [lavrec] Syncing on frame 19 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 --DEBUG: [lavrec] Syncing on frame 6 ... i.e. it seems to be going OK up to a point, then a stream of identical syncing reports floods by. Ctrl-C is the only way out. The file captured, as far as it goes, seems OK. Any ideas? I'm also having a problem with the sound, which may or may not be related - I'll start another thread for that. --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047alloc_id=10808op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Sound problem
Further to my video capture problem just reported in another post, I'm also having a problem with the captured sound. The sound card in this box is an ancient ISA SB16 card which I've used happily with the tools for years. This is the first time I've tried it with the 2.6.x kernel though. I'm running SUSE-9.1 on a dual processor box. The kernel is self complied 2.6.7 and has pre-emption turned on, if that makes a difference. The problem is that the sound comes out on the AVI file with pulsed crackles every second. I'm not sure how else to describe it. The sound track is there, and you can hear the conversation, but over the top is this consistent pulsed squelching noise. The sound card works fine under other circumstances and applications, so I suspect the capture, rather than the playback. Any ideas on this one? --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=5047alloc_id=10808op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Most easily usable video format
I have to capture and encode a few (like 5) minutes of video and distribute it to fairly clueless consumers. Most consumers would be running flavours of Windows, maybe a few with Mac or *NIX desktops. Distribution will be via CD, possibly LAN in some cases. The video will not contain any fast movement and will be played on the user's computers. Transfer anywhere else is not required. I wondered which of the formats the MJPEG tools support would be best for this? I thought MPG1, which I figured a standard desktop of just about any flavour could play. Would that be right? Are there other formats which MJPEG tools can produce which an out-of-box Windows or Mac desktop can play? --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] What's a mux format?
I've used mpeg2enc for ages now, and I use -f 1 to set VCD format, as per the help: --format-f fmt Set pre-defined mux format fmt. [0 = Generic MPEG1, 1 = standard VCD, 2 = VCD, 3 = Generic MPEG2, 4 = standard SVCD, 5 = user SVCD, 6 = VCD Stills sequences, 7 = SVCD Stills sequences, 8 = DVD] This has always made sense and I've never really thought about it. Somewhere in my mind I associated this with an operation which scales the image to VCD size. Only today, it finally dawned on me that that /isn't/ what it does. I plugged in a 512 x 384 video, and that's what came out! So, for curiousity's sake, what does do? What is a pre-defined mux format? --- This SF.Net email is sponsored by: SourceForge.net Broadband Sign-up now for SourceForge Broadband and get the fastest 6.0/768 connection for only $19.95/mo for the first 3 months! http://ads.osdn.com/?ad_id=2562alloc_id=6184op=click ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Using the video playback
Daft question time. I've had a DC10+ card for a few years now, and have used the MJPEG tools successfully for all that time. However, I've never had to use the hardware video playback features of the card. Is it possible to playback an MPEG or Divx file using the card to show the picture on my TV? If so, what software is required? -- eatapple core dump --- This SF.net email is sponsored by: The SF.net Donation Program. Do you like what SourceForge.net is doing for the Open Source Community? Make a contribution, and help us add new features and functionality. Click here: http://sourceforge.net/donate/ ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Using the video playback
The card can directly only decode mjpeg encoded AVI/Quicktime/Movtar, and produce video output. With mplayer and the -vo zr (try the -zrhelp first) you can play back nearly every stream on the TV out of you DC10. But a 1GHz CPU is needed to convert the video in realtime to a mjpeg stream that is sent to DC10/LML33/BUZ. OK, I have a recent Mplayer build doing just that. :o) However, my box is a dual PIII-500mhz, which, since MPlayer doesn't thread, is effectively a single PIII-500. As you say, it's a bit slow. The image judders when things move about. 2 questions: 1) is it possible to preconvert the stream in some way, to prevent things having to be done in real time? 2) is it possible to have the picture fill the TV screen? It currently occupies the centre, and has a wide black border all round the outside. -- eatapple core dump --- This SF.net email is sponsored by: The SF.net Donation Program. Do you like what SourceForge.net is doing for the Open Source Community? Make a contribution, and help us add new features and functionality. Click here: http://sourceforge.net/donate/ ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] CVS status
I've asked a couple of questions on the list over the last few days, and have been directed to features in CVS, which aren't in the stable 1.6.1 which I'm using. So, how stable is CVS these days? Heavy development, or ready for regular users to start beta testing? -- Eagles may soar, but weasels don't get sucked into jet engines --- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Flickering DVD output
I'm trying to get a reasonable DVD/TV output, and I'm having flickering problems. I captured a PAL VHS source using a DC10+ and 1.6.1. My MJPEG file has these attributes: --DEBUG: [lav2yuv]width:768 --DEBUG: [lav2yuv]height: 576 --DEBUG: [lav2yuv]interlacing: top field first --DEBUG: [lav2yuv]frames/sec:25.000 Following the HOWTO, I tried encoding to DVD acceptable format using this: lav2yuv _30secs.eli | yuvdenoise | yuvscaler -O SIZE_720x576 | mpeg2enc -f 8 -q 7 -4 1 -2 1 -P -I 1 -N -o dvd_30secs.m2v Which I understand denoises leaving the interlacing in place, then encodes the interlaced source. Played on my DVD player and 50hz TV, it's horrible. The content is a yoga style video, which has slow (to non existant :o)) action and a pure white studio background. The background flickers terribly, and the edges of the person and equipment are ghosted and flickery. I tried adding -F to yuvdenoise and -I 1 to mpegenc, understanding this would deinterlace and produce deinterlaced output, and should therefore look bad on my TV. Actually, it looks a bit better, but is still not really usable. Any clues? My suspicions fall on the yuvscaler, which isn't described in the HOWTO, but appears to be necessary. (The example in the HOWTO gives an error message for me without it.) -- Eagles may soar, but weasels don't get sucked into jet engines --- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Producing a speeded up video
On Saturday 15 February 2003 00:26, Bernhard Praschinger wrote: Hallo I have captured to MJPEG an 8 minute video clip featuring a short drive (taken from a camera in the car). Can I speed up this video, down to say, 30 seconds by encoding every n'th frame? Basically I'm after a final version which looks like 'glav' playing at x30 If you use the cvsm you will have yuvfps, that can speed up you video cvsm? yuvfps? These aren't mentioned in the HOWTO, or anywhere else I could find. -- Eagles may soar, but weasels don't get sucked into jet engines --- This SF.NET email is sponsored by: FREE SSL Guide from Thawte are you planning your Web Server Security? Click here to get a FREE Thawte SSL guide and find the answers to all your SSL security issues. http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0026en ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Producing a speeded up video
I have captured to MJPEG an 8 minute video clip featuring a short drive (taken from a camera in the car). Can I speed up this video, down to say, 30 seconds by encoding every n'th frame? Basically I'm after a final version which looks like 'glav' playing at x30. -- Eagles may soar, but weasels don't get sucked into jet engines --- This SF.NET email is sponsored by: FREE SSL Guide from Thawte are you planning your Web Server Security? Click here to get a FREE Thawte SSL guide and find the answers to all your SSL security issues. http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0026en ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Adobe Premiere
This is bordering on flamebait, but... :o) Has anyone used the output of the MJPEG tools as input to Adobe Premiere? Other than as an already encoded mpg or avi that is? -- Australian Linux Technical Conference 2003: http://www.linux.conf.au/ Explain to your boss the benefits of you going... --- This SF.NET email is sponsored by: FREE SSL Guide from Thawte are you planning your Web Server Security? Click here to get a FREE Thawte SSL guide and find the answers to all your SSL security issues. http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0026en ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
