Re: [Mjpeg-users] I suppose, file with no avi header

2006-01-03 Thread Richard Ellis
On Tue, Dec 20, 2005 at 10:13:01AM +0100, Martin Samuelsson wrote: On Mon, 19 Dec 2005 18:20:56 +0100 Bernhard Praschinger [EMAIL PROTECTED] wrote: Lavtools, avilib, or something, likes to write an empty RIFF header when beginning and recording an avi file. If there is a sudden or

Re: [Mjpeg-users] Creating a jpg from an avi

2005-10-26 Thread Richard Ellis
On Wed, Oct 26, 2005 at 03:12:03PM +0100, Anne Wilson wrote: Based on the work I did last year, I issued the command lavtrans -o title.jpg -f i 286 ~/susan.avi ^^^ Maybe something has changed, or maybe I've got it wrong, but this didn't work. I got Error

Re: [Mjpeg-users] Some wishes for yuvplay

2005-07-26 Thread Richard Ellis
On Tue, Jul 26, 2005 at 10:07:47AM +0200, Dik Takken wrote: 2: Allow yuvplay to be used in the middle of a processing chain, like this: ... | y4mscaler ... | yuvplay | mpeg2enc ... Now yuvplay can be used as a progress monitor anywhere in the processing chain. Possibly even multiple

Re: [Mjpeg-users] Numerical stream conditioning

2005-03-21 Thread Richard Ellis
On Sun, Mar 20, 2005 at 04:20:48PM -0800, Steven M. Schultz wrote: On the recently discussed topics of blocks in dark scenes and does the encoder see things differently than the eye I have something that might be of interest. I pulled up a still frame from a DV file that to the eye

Re: [Mjpeg-users] Numerical stream conditioning

2005-03-21 Thread Richard Ellis
On Mon, Mar 21, 2005 at 11:18:36AM -0800, Steven M. Schultz wrote: On Mon, 21 Mar 2005, Richard Ellis wrote: What you are likely seeing there is the limits of the accuracy of the ADC of whatever encoded the video. I.e., ADC noise, which will Not really - unless Canopus' quality

Re: Re: [Mjpeg-users] problems with 2Gig boundary??

2005-03-07 Thread Richard Ellis
On Thu, Mar 03, 2005 at 06:31:42PM +0100, Jan Rottschaefer wrote: hi Richard, so its is normal that lav2yuv +p testy.avi | mpeg2enc -f8 -b4000 -o testy.m1v does not work with avi's larger than 2Gig and you can not do anything about that?? Yes. At present it is a limitation of the

Re: [Mjpeg-users] Size of interlaced material

2005-03-07 Thread Richard Ellis
On Thu, Mar 03, 2005 at 10:09:05PM +0100, Lehmeier Michael wrote: Hi! I recorded a nature documentary on television. ... The result of the reencoding was bigger than the original 720x576! Most likely due to noise and encoding/decoding artifacts. Am I doing something really wrong or

Re: [Mjpeg-users] problems with 2Gig boundary??

2005-03-02 Thread Richard Ellis
On Wed, Mar 02, 2005 at 09:37:37PM +0100, Jan Rottschaefer wrote: ... When i record one hour with streamer -t 1:00:00 -s 480x576 -r 25 -j 85 -f mjpeg -F stereo -o testy.avi i get a 6 to 7Gig avi file. Next step i extract video and audio using: ... lav2yuv +p testy.avi | mpeg2enc

Re: [Mjpeg-users] Colour depth, frame sizes and general comments

2005-02-09 Thread Richard Ellis
On Tue, Feb 08, 2005 at 04:27:08PM +, John Gay wrote: Well, I finally figured out how to get POV-Ray to output non-3:4 ratio frames, so I'm playing around with using Wide screen setting. For extra resolution, I'm generating 16:9 frames at 2048 X 1152 for scaling down. The default output

Re: [Mjpeg-users] When interlaced? (was Re: lav2yuv problems with mencoder material)

2005-02-09 Thread Richard Ellis
On Wed, Feb 09, 2005 at 12:21:16AM +0100, Lehmeier Michael wrote: Is there a rule of thumb when to use interlacing and when not? If the source material is interlaced, it's generally better to keep it that way. If the destination is an interlaced display (television) you have little choice, at

Re: [Mjpeg-users] Colour depth, frame sizes and general comments

2005-02-09 Thread Richard Ellis
On Wed, Feb 09, 2005 at 10:32:17PM +, John Gay wrote: On Wednesday 09 February 2005 17:54, Richard Ellis wrote: But you said above that you wanted max quality. Technically, that is max quality. Pov-ray created a pixel, the mpeg encoder faithfully reproduced that pixel. But I

Re: [Mjpeg-users] Kernel oops with mpeg2enc

2005-02-01 Thread Richard Ellis
On Fri, Jan 28, 2005 at 01:36:37PM +0100, Thomas B?rkel wrote: HI! Richard Ellis wrote: Maybe heat? Mpeg2enc will push your CPU to run at 100% power for quite a lengthy amount of time, and if your CPU cooler is not able to handle the heat load, you can get crashes and freezes. Hm

Re: [Mjpeg-users] Kernel oops with mpeg2enc

2005-01-27 Thread Richard Ellis
On Wed, Jan 26, 2005 at 10:07:12PM +0100, Thomas B?rkel wrote: HI! I got a kernel oops while mpeg2enc was running. When I tried the same encoding again later (after reboot), the machine froze. This is the first time, I had problems with mpeg2enc. I tested the memory and hard disks (with

Re: [Mjpeg-users] Achieving near-perfection with NTSC videotapes of 24fps films

2005-01-19 Thread Richard Ellis
On Wed, Jan 19, 2005 at 11:27:18PM +0100, Roine Gustafsson wrote: On Wednesday, Jan 19, 2005, at 19:02 Europe/Stockholm, Steven Boswell II wrote: /video/DVD/URGH-A Music War (DVD,ac3,advc-colorscale-conform-kinecoF1-newd1_z1t2m30M3-med_fr1R1w8- m2e_b5055q1D10H).mpg LOL! Worst

Re: [Mjpeg-users] Problem with audio (DC10+ / EMU10K1)

2005-01-15 Thread Richard Ellis
On Sat, Jan 15, 2005 at 12:49:57PM -0300, Marco Carvalho wrote: Hi, I'm trying capture with lavrec, if someone have have any sugestion... First, verify that you can capture audio with an audio only capture app (one that uses the OSS emulation, as lavrec does not know ALSA directly). If you

Re: [Mjpeg-users] Example: using y4mdenoise to achieve near-perfection with videotapes

2004-12-31 Thread Richard Ellis
On Fri, Dec 31, 2004 at 09:29:41AM -0800, Steven Boswell II wrote: Aieee - but if you're using a composite cable then the VCR is MASHING/MUSHING/CURDLING/DOWNGRADING/etc the Y and C signals into a composite signal - that is a LOSSY (and damaging) conversion and even the best Y/C separator can

Re: [Mjpeg-users] What Recent MJPEG Card?

2004-12-16 Thread Richard Ellis
On Mon, Dec 13, 2004 at 10:34:43AM -0800, Steven M. Schultz wrote: On Mon, 13 Dec 2004, Richard Ellis wrote: might also consider one of the hardware mpeg2 compression boards instead of a MJPEG/DV solution. I can attest that the Hauppage WinTV PVR250 card's will generate a simply

Re: [Mjpeg-users] Re: best parameters for DVB-T analog capturing

2004-12-16 Thread Richard Ellis
On Wed, Dec 15, 2004 at 10:35:06AM +0100, Frank Albrecht wrote: Do you still record with the BT878 card ? Yes, from the DVD-T Box via fbas(composite). This Signal contains already Blocks due to the mpeg-bitrate. Do you mean that the signal from the DVD-T box that is being recorded already

Re: [Mjpeg-users] What Recent MJPEG Card?

2004-12-16 Thread Richard Ellis
On Mon, Dec 13, 2004 at 09:54:38AM -0800, Steven M. Schultz wrote: I do not know if the PVR-250 (or 350) can be used as a general purpose capture/encoding device (if a VHS deck can be attached) or if it's limited to signals received via the TV tuner section of the card. The PVR-250 has 3

Re: [Mjpeg-users] What Recent MJPEG Card?

2004-12-16 Thread Richard Ellis
On Tue, Dec 14, 2004 at 12:15:22AM +0100, Dik Takken wrote: 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

Re: [Mjpeg-users] Re: best parameters for DVB-T analog capturing

2004-12-16 Thread Richard Ellis
On Thu, Dec 16, 2004 at 03:41:49PM +0100, Frank Albrecht wrote: On Wed, Dec 15, 2004 at 10:35:06AM +0100, Frank Albrecht wrote: Yes, from the DVD-T Box via fbas(composite). This Signal contains already Blocks due to the mpeg-bitrate. Do you mean that the signal from the DVD-T box that

Re: [Mjpeg-users] Audio ring buffer overflow in lavrec

2004-11-26 Thread Richard Ellis
On Thu, Nov 25, 2004 at 01:53:28PM +, Anne Wilson wrote: Without -U O don't even get a start: Then that's not a solution. :) A/V sync ins/del: 028/000 ^^^ This seems very suspicious. 28 inserted frames for 15 seconds of recording is way too much. You have something

Re: [Mjpeg-users] Audio ring buffer overflow in lavrec

2004-11-25 Thread Richard Ellis
On Thu, Nov 25, 2004 at 12:01:29PM +, Anne Wilson wrote: Subject: [Mjpeg-users] Audio ring buffer overflow in lavrec This section of input has a rather high volume. I tried recording with lavrec -f a -i P -d 2 -q 80 -s -l 60 -R l -U filename.avi and have tried dropping -l to 40, but

Re: [Mjpeg-users] Combining interlaced and progressive video

2004-11-01 Thread Richard Ellis
On Sat, Oct 30, 2004 at 06:42:18PM +0200, Dik Takken wrote: I have done a bit of testing, comparing these two encoding pipelines: png images - yuv4mpeg - mjpeg - mpeg2 png images - yuv4mpeg - mpeg2 The quality produced by the second pipeline is clearly a lot better. The mjpeg

Re: [Mjpeg-users] Combining interlaced and progressive video

2004-11-01 Thread Richard Ellis
On Sat, Oct 30, 2004 at 11:30:29PM +0200, Dik Takken wrote: Fact is that using MPlayer's post processing can make compressed material look better to the human spectator, but the question is still if an encoder like mpeg2enc will also like the post-processed stream better. That's a question

Re: [Mjpeg-users] Field order keeps changing

2004-10-28 Thread Richard Ellis
On Wed, Oct 27, 2004 at 10:06:42PM +0100, scott wrote: I don't understand when you say You won't see comb effects on your TV-set It (the comb effect) will look different on a TV set than on a computer monitor. You can still see it if you know what to look for, but the visual effect is

Re: [Mjpeg-users] mpeg2enc: progressive vs interlaced quality

2004-10-28 Thread Richard Ellis
On Thu, Oct 28, 2004 at 12:26:24PM +0200, Dik Takken wrote: Quote from the mpeg2enc manual, -b option: If variable bit-rate mode has been selected (see the -q option) this is the maximum bit-rate of the stream. So, the -b value is not the average, but the upper limit when -q is

Re: [Mjpeg-users] Some more glav/lavplay problems

2004-10-27 Thread Richard Ellis
On Wed, Oct 27, 2004 at 01:53:01PM +0200, Dik Takken wrote: Here are two more problems that I discovered while working with glav/lavplay: * Simple MPlayer-style keyboard control. Using the arrow keys to seek, space as pause toggle and use the arrow keys to seek frame-by-frame when

Re: [Mjpeg-users] Fixing a broken .avi file

2004-10-04 Thread Richard Ellis
On Sun, Oct 03, 2004 at 02:23:32PM +0200, Martin Samuelsson wrote: Once in a while, my video computer die from a kernel panic. If this happens while I'm recording something (which it normally does), I'm left with an avi file with no usable values in the header. Is there any good way to fix

Re: [Mjpeg-users] VCR capture

2004-09-23 Thread Richard Ellis
On Wed, Sep 22, 2004 at 06:11:24PM +0200, Bernhard Praschinger wrote: Hallo When you have only 2MHz of bandwith, you cannot have a chessboard of white/black pixles and in each row 360 white annd 360 Black pixles for PAL. The voltage level has to raise and fall. And with 2MHZ of bandwith you

Re: [Mjpeg-users] VCR capture

2004-09-21 Thread Richard Ellis
On Tue, Sep 21, 2004 at 04:56:04PM +0200, Bernhard Praschinger wrote: Hallo If you're in a 625line (usually PAL) video country then VHS has 576 active (vertical) lines in 2 fields just like TV and DVDs. VHS does lack resolution though since it effectively only has 200 or so

Re: [Mjpeg-users] Too late?

2004-08-25 Thread Richard Ellis
On Tue, Aug 24, 2004 at 06:36:30PM -0400, Selva Nair wrote: On Tue, 24 Aug 2004, Steven M. Schultz wrote: My capture card is a DC10+ under v4l - that's the resolution it captures at full size. On my previous small project I used -d 2, but I think on this one I used -d 1 in lavrec.

Re: [Mjpeg-users] Best capture tools under Linux for V4L2?

2004-06-22 Thread Richard Ellis
On Tue, Jun 22, 2004 at 07:31:58PM +1200, Steven Ellis wrote: On Tue, 2004-06-22 at 17:45, Steven M. Schultz wrote: On Tue, 22 Jun 2004, Steven Ellis wrote: Get yourself a IEEE1394 card (very cheap) and a Canopus ADVC100 or even better (but somewhat more expensive) ADVC300 analog to DV

Re: [Mjpeg-users] Best capture tools under Linux for V4L2?

2004-06-22 Thread Richard Ellis
On Tue, Jun 22, 2004 at 08:57:43AM -0700, Steven M. Schultz wrote: On Tue, 22 Jun 2004, Steven Ellis wrote: 1. Can't really build a PVR around this, which is part of the long term goal. You most certainly can. Might be an extra (S-Video or composite) cable or two involved but that

Re: [Mjpeg-users] lav2wav | sox poor performance

2004-06-21 Thread Richard Ellis
On Mon, Jun 21, 2004 at 09:42:52AM -0400, Brian J. Murrell wrote: ... So my command line is: $ lav2wav file.eli | sox -t wav - -t wav /dev/null stat -v but both lav2wav and sox both use up negligible CPU in doing this job, and it takes far too long. lav2wav's CPU usage is about 2% and

Re: [Mjpeg-users] lav2wav | sox poor performance

2004-06-21 Thread Richard Ellis
On Mon, Jun 21, 2004 at 11:11:09AM -0400, Brian J. Murrell wrote: On Mon, 2004-06-21 at 10:28 -0400, Richard Ellis wrote: Check your disk I/O read bandwidth. Lav2wav is heavily read I/O bandwidth bound. ... /dev/hda: Timing buffer-cache reads: 636 MB in 2.00 seconds = 318.00 MB/sec

Re: [Mjpeg-users] lav2wav | sox poor performance

2004-06-21 Thread Richard Ellis
On Mon, Jun 21, 2004 at 03:25:54PM -0400, Brian J. Murrell wrote: Right but since then I have simplified the test to just lav2wav sucking. See my previous e-mail: $ time lav2wav file.eli file.wav INFO: [lav2wav] WAV done 0.58user 12.01system 1:49.86elapsed 11%CPU

Re: [Mjpeg-users] Build VDR, Tuner needed

2004-04-21 Thread Richard Ellis
On Wed, Apr 21, 2004 at 01:22:13PM +0200, Torsten Mohr wrote: Hi, i'd like to build a VDR based on my DC10 card. But that card has no tuner, so the idea is to either: - add an external tuner that selects the program to record. Can anybody recommend an external tuner? Any VCR with

Re: [Mjpeg-users] DVD with constant bit rate

2004-04-20 Thread Richard Ellis
On Tue, Apr 20, 2004 at 03:07:10PM +1200, E.Chalaron wrote: Was wondering how I could get a MPEG2 4 DVD with a constant bit rate. I do not mind about sparing DVDs, I'd rather have the best quality possible. Constant bit rate does not equate to best quality. Unless you set the CBR ceiling

Re: [Mjpeg-users] audio error

2004-04-08 Thread Richard Ellis
On Thu, Apr 08, 2004 at 02:00:26PM -0300, Marcelo Duschkin wrote: I've just upgraded from Mandrake 9.1 to 9.2, and now in LVS lavplay returns this error: Error initializing audio: Audio task died. Reason: Error mapping audio buffer What's wrong? Sounds like in the upgrade you changed sound

Re: [Mjpeg-users] Cant get started

2004-04-05 Thread Richard Ellis
On Sun, Apr 04, 2004 at 01:04:22PM +0100, Anne Wilson wrote: I disabled the AC97 and installed the SBLive! 5.1. I could capture the video now, without problem, though I still have no sound. Does the sound cable go straight from camcorder to capture card, or does it have to go

Re: [Mjpeg-users] MPEG editors?

2004-04-04 Thread Richard Ellis
On Sun, Apr 04, 2004 at 10:17:21AM -0700, Steven M. Schultz wrote: On Sat, 3 Apr 2004, Richard Ellis wrote: is sparse (actually, sparse is a bit too generous) and that the mode of operation for mpeg cutting is slightly non-intuitive. However, on Yes indeed - actually I would go

Re: [Mjpeg-users] Silence?

2004-04-04 Thread Richard Ellis
On Fri, Jun 04, 2004 at 11:10:59PM +0200, Alfonso wrote: Thanks for the tip, but I found Steve's formula in my inbox and used it to generate 6 seconds of silence to go with the 150 frames of 720X576 video of four X-Wings flying in formation against a starfield and used mplex to create a

Re: [Mjpeg-users] MPEG editors?

2004-04-03 Thread Richard Ellis
On Sat, Apr 03, 2004 at 11:06:50AM -0800, Steven M. Schultz wrote: What programs exist to edit MPEG program stream files? I know about GOPchop but reading the documentation I see that GOPchop allocates about 10% of the filesize as memory buffers - that doesn't work well at all with large

Re: [Mjpeg-users] Cant get started

2004-04-03 Thread Richard Ellis
On Fri, Apr 02, 2004 at 08:06:35PM +0100, Anne Wilson wrote: -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I have on loan, for testing, a Pinnacle DC10+ card. My hope is to convert Hi8 tape into vcd or dvd. Distro: Mandrake 9.2 Hardware: Asus A7v8X-X Soundard: on-board AC97 -

Re: [Mjpeg-users] obtaining maximum player compatibility

2004-03-18 Thread Richard Ellis
On Thu, Mar 18, 2004 at 10:11:38AM +0100, Maarten de Boer wrote: If I understand you correctly, you are saying that using B frames will result in less player compatibility? And Richard suggests dual prima motion estimation is causing less player compatibility. So I guess it is best

Re: [Mjpeg-users] obtaining maximum player compatibility

2004-03-18 Thread Richard Ellis
On Thu, Mar 18, 2004 at 01:51:10PM +0100, Maarten de Boer wrote: Since you found a hardware player that seems allergic to -R 0 streams, why not test it for us. ... That is actually a very good idea. While I am at it, I might create some more test mpegs, and create a reference dvd image.

Re: [Mjpeg-users] RE: [Dvdauthor-users] obtaining maximum player compatibility

2004-03-18 Thread Richard Ellis
On Thu, Mar 18, 2004 at 01:02:34PM -0800, Florin Andrei wrote: That's very strange. I thought MP2 should work with the vast majority of DVD players (no matter what the standards say). It never happened to me, anyway. But now i use AC3 and the point became moot. The DVD specs, or at least that

Re: [Mjpeg-users] obtaining maximum player compatibility

2004-03-17 Thread Richard Ellis
On Wed, Mar 17, 2004 at 09:59:59AM +0100, Maarten de Boer wrote: Hello, I created a DVD from some miniDV recordings, and I tested it on 3 hardware players. 2 work perfectly, but the third one, a SAMSUNG M105, only shows the menu I created, but refuses to play any titles. (can't give the

Re: [Mjpeg-users] mpeg2enc 1.6.2: Pulsating DCT blocks in quiet regions

2004-03-17 Thread Richard Ellis
On Sun, Mar 14, 2004 at 10:40:41PM +0100, Rickard Westman wrote: Hi, I have recently started to transfer some TV recordings onto DVD:s, using Fredrik Hubinette's mkdvd script. With high bitrates (~ 5.5Mbit/s) the quality was quite good, but when I tried a lower bitrate (~3.5 Mbit/s), I

Re: [Mjpeg-users] obtaining maximum player compatibility

2004-03-17 Thread Richard Ellis
On Wed, Mar 17, 2004 at 03:10:18PM +0100, Maarten de Boer wrote: Hello Richard, Thanks for your reply. You did not say which version of mpeg2enc you are running. Is it the Yes, sorry, I am not in front of my home machine, where I did all the encoding... I use a fairly recent (about

Re: [Mjpeg-users] Distributed Encoding of DV

2004-03-03 Thread Richard Ellis
On Tue, Mar 02, 2004 at 10:55:49PM -0600, George Kola wrote: Hi, I would like to try Distributed encoding of DV to MPEG1,2 4 using some 10+ machines. I realize that I need some utility to split the DV, encode the pieces and finally merge them together. Does anybody know of any utilites to

Re: [Mjpeg-users] multiple dc10+ cards

2004-02-25 Thread Richard Ellis
On Tue, Feb 24, 2004 at 08:49:20PM -0800, Douglas Fraser wrote: Setting up a system with two dc10+ cards, one for capture and the other for playback. I was hoping someone could give me a tip on how to configure lavrec lavplay to access the different cards. For lavrec, you set LAV_VIDEO_DEV,

Re: [Mjpeg-users] VCD easy (hopefully) question

2004-02-10 Thread Richard Ellis
On Tue, Feb 10, 2004 at 10:44:34AM -0500, Paul Miller wrote: On Mon, Feb 09, 2004 at 04:56:14PM -0500, [EMAIL PROTECTED] wrote: y4mscaler -I active=704x480+12+0 -I matte=696x472+16+0 -S option=sinc8lan -O preset=DVD -O size=704x480 -O Xscale=15:16 -O Yscale=14:15 Is there a way to get

Re: [Mjpeg-users] VCD easy (hopefully) question

2004-02-09 Thread Richard Ellis
The problem is, my DVD player cuts off 10 or so pixels from each side, and 15 or so from the top and bottom. When I try to play the VCD it renders some of the subtitles off the screen -- not to mention some of the video. Are you certain it's the DVD player? It sounds like you are

[Mjpeg-users] How to concatenate mp2/m2v files for multiplexing ?

2004-01-22 Thread Richard Ellis
Is there any way to concatenate plural sets of mp2/m2v files for multiplexing together into a single stream. The m2v files are created in mpeg format (-f 8) to mpeg2enc. I tried: cat f1.mp2 f2.mp2 f3.mp2 all.mp2 cat f1.m2v f2.m2v f3.m2v all.m2v mplex -f 8 -r 0 -V -b 230 -S 0 -o all.%0d.mpeg

Re: [Mjpeg-users] Quality factor -q

2004-01-21 Thread Richard Ellis
On Wed, Jan 21, 2004 at 02:00:22PM +0100, Thomas B?rkel wrote: A lower -q (2 or 3) gets me higher file sizes, so shouldn't it also be potentially better quality? Provided you don't hit your maximum bit-rate limit (-b 4000) that you've chosen, yes. I want to encode about 43 minutes of video

Re: [Mjpeg-users] 1.6.2 on gcc 2.96?

2004-01-05 Thread Richard Ellis
On Mon, Jan 05, 2004 at 08:35:31AM -0800, Steven M. Schultz wrote: On Mon, 5 Jan 2004, Dik Takken wrote: Will version 1.6.2 be compilable on gcc 2.96? I have posted problem reports about 1.6.1, which appears to be compilable only on gcc 3.x. gcc 2.95.{3,4} was able to compile

Re: [Mjpeg-users] -M 2/3 on SMP is slower than -M 0

2003-12-19 Thread Richard Ellis
On Fri, Dec 19, 2003 at 01:34:38AM -0800, Trent Piepho wrote: On Fri, 19 Dec 2003, Andrew Stevens wrote: The next bottlenecks would be the run-length coding and the use of variance instead of SAD in motion compensation mode and DCT mode selection. Sadly Is SAD really any faster to

Re: [Mjpeg-users] -M 2/3 on SMP is slower than -M 0

2003-12-17 Thread Richard Ellis
On Tue, Dec 16, 2003 at 06:54:22PM -0700, Slepp Lukwai wrote: As a side note, I'm also using a 200Hz timer, instead of the standard 100Hz. Though I don't see this doing anything but making it quicker, as it reduces latency on scheduling, while slightly increasing scheduler overhead and context

Re: [Mjpeg-users] -M 2/3 on SMP is slower than -M 0

2003-12-16 Thread Richard Ellis
On Tue, Dec 16, 2003 at 09:27:53AM -0800, Steven M. Schultz wrote: Perhaps Richard Ellis could chime in with his experiences with -Q ;) It seems that with the right set of options, and the right set of input data, -Q can help to create some really nasty looking artifacts. And again, son

Re: [Mjpeg-users] -M 2/3 on SMP is slower than -M 0

2003-12-16 Thread Richard Ellis
On Tue, Dec 16, 2003 at 12:33:52AM -0700, Slepp Lukwai wrote: On Mon, 2003-12-15 at 21:08, Richard Ellis wrote: Additionally, why kind of memory do you have attached to the cpu's? Mpeg encoding is very memory bandwidth hungry to begin with, and with two cpu's trying to eat at the same

Re: [Mjpeg-users] -M 2/3 on SMP is slower than -M 0

2003-12-16 Thread Richard Ellis
On Tue, Dec 16, 2003 at 12:45:48PM -0800, Trent Piepho wrote: On Tue, 16 Dec 2003, Richard Ellis wrote: 6 or 8GB/s L2. The cache size is 256k/CPU, 64k L1. At 550MB/s, it SHOULD be able to push enough to keep the frames encoding at 100% CPU, in theory. Yes, but just one 720x480 DVD

Re: [Mjpeg-users] Odd artifact from mpeg2enc rc92

2003-12-04 Thread Richard Ellis
On Thu, Dec 04, 2003 at 04:18:36PM -0800, Steven M. Schultz wrote: On Thu, 4 Dec 2003, Richard Ellis wrote: splotches less intense, but they are still there. If you want, I can lavtrans out the first 30 or 60 seconds of the capture and set it up I could take a look at it and verify

[Mjpeg-users] GOP size 18 vs. GOP size 54

2003-11-09 Thread Richard Ellis
On Fri, Nov 07, 2003 at 11:49:03AM -0800, Steven M. Schultz wrote: On Fri, 7 Nov 2003, Richard Ellis wrote: It's been so long since I bumped up to -G 54 for timeshifting I don't remember, but when I tested it the reduction was worth enough to convince me that it was worth staying

Re: [Mjpeg-users] GOP size 18 vs. GOP size 54

2003-11-09 Thread Richard Ellis
I've got a second real world example now: 76,643 MJPEG frames, for 42.6220 minutes of video. GOP 54 343,248,122 bytes GOP 18 357,706,821 bytes A 4.042% reduction in size. --- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November

[Mjpeg-users] mpeg2enc current cvs segfault ?

2003-11-07 Thread Richard Ellis
Has anyone tried the current cvs mpeg2enc lately? I pulled the current cvs on Nov. 4 because I wanted to see for myself how well the new no B frames please option worked. But my copy of mpeg2enc compiled from the source I pulled that day takes a segfault while it's processing the first frame

Re: [Mjpeg-users] mpeg2enc current cvs segfault ?

2003-11-07 Thread Richard Ellis
On Fri, Nov 07, 2003 at 04:20:13PM +0100, Bernhard Praschinger wrote: Hallo Has anyone tried the current cvs mpeg2enc lately? I pulled the current cvs on Nov. 4 because I wanted to see for myself how well the new no B frames please option worked. But my copy of mpeg2enc compiled from

Re: [Mjpeg-users] mpeg2enc current cvs segfault ?

2003-11-07 Thread Richard Ellis
On Fri, Nov 07, 2003 at 10:28:40AM -0800, Steven M. Schultz wrote: On Fri, 7 Nov 2003, Richard Ellis wrote: switch. Using gop length of 54 shrinks the resultant video size a wee bit due to fewer I frames. The command line is what I use for How little is 'wee' bit? There are other

Re: [Mjpeg-users] mpeg2enc current cvs segfault ?

2003-11-07 Thread Richard Ellis
On Fri, Nov 07, 2003 at 07:24:08PM +0100, Bernhard Praschinger wrote: q_scale_type=1, satlim=2047, nonsat_mquant=0x41b5d02c) at quantize_x86.c:309 309 mulps_m2r( *(mmx_t*)piqf[0], xmm2 ); I forgot to ask, wihch version of NASM do you use ? I have NASM version

Re: [Mjpeg-users] mpeg2enc current cvs segfault ?

2003-11-07 Thread Richard Ellis
On Fri, Nov 07, 2003 at 10:40:06AM -0800, Steven M. Schultz wrote: On Fri, 7 Nov 2003, Bernhard Praschinger wrote: Could it be a memory problem ? On my machine mpeg2enc buffers 111 Frames. That is about 100MB That's a possibility I suppose. The other thing that might cause a problem

[Mjpeg-users] AMD Athlon 64's mpeg2enc

2003-10-15 Thread Richard Ellis
Does anyone on the list have one of the latest and greatest AMD Athlon 64's? If so, how does it stack up speed wise running mpeg2enc vs. Intel's P4 chips? This article: http://www.pcworld.com/resource/printable/article/0,aid,112749,00.asp part way down contains this statement: Once video

[Mjpeg-users] Another yuvdenoise bug? Not sure of fix.

2003-09-30 Thread Richard Ellis
For a while it has seemed to me that negative width and height values given to yuvdenoise on the -b parameter have not in fact created a black border on the bottom and/or right of a filtered image. So I started looking around in the code to see what was up. The man page says that the -b

Re: [Mjpeg-users] Another yuvdenoise bug? Not sure of fix.

2003-09-30 Thread Richard Ellis
On Tue, Sep 30, 2003 at 10:05:07AM -0700, Steven M. Schultz wrote: On Tue, 30 Sep 2003, Richard Ellis wrote: Note the w: and h: sizes. The border was specified as -b 4,4,-4,-4, and when a -4 signed int is stuffed into an unsigned int variable, 65532 is the resultant value

[Mjpeg-users] yuvdenose small speedup (sometimes) patch

2003-09-29 Thread Richard Ellis
Attached is a small patch that I put together today that based on my measurements produces about a 6-7% speedup of yuvdenoise if the luminance contrast option is used. I got the idea for the change from the yuvcorrect sources, the optimization is to pre-compute the contrasted values for pixel

Re: [Mjpeg-users] yuvdenose small speedup (sometimes) patch

2003-09-29 Thread Richard Ellis
On Mon, Sep 29, 2003 at 08:13:47PM -0700, Steven M. Schultz wrote: On Mon, 29 Sep 2003, Richard Ellis wrote: Attached is a small patch that I put together today that based on my measurements produces about a 6-7% speedup of yuvdenoise if the luminance contrast option is used. I got

Re: [Mjpeg-users] Buz field order problem

2003-09-22 Thread Richard Ellis
On Mon, Sep 22, 2003 at 10:22:15AM +0200, Ronald Bultje wrote: Hi, On Sun, 2003-09-21 at 14:14, Matt Trim wrote: I seem to be having this same problem with my Buz recordings - of the same TV program - one day it will be OK and the next it will be reversed. Am using the 0.9.4 driver as

Re: [Mjpeg-users] mpeg2enc -Q differences between 1.6.0 and 1.6.1.90

2003-09-21 Thread Richard Ellis
On Fri, Sep 19, 2003 at 10:47:35PM -0700, Steven M. Schultz wrote: 4 encodings were done using -N of 0, 0.5, 1.0 and 1.5 (and 2 different -q values, and using yuvdenoise in -f and -l modes). Quite an exhaustive (and time consuming ;)) set of runs. ... I have some more real world numbers to

Re: [Mjpeg-users] mpeg2enc -Q differences between 1.6.0 and 1.6.1.90

2003-09-21 Thread Richard Ellis
On Sun, Sep 21, 2003 at 05:51:19PM -0700, Steven M. Schultz wrote: On Sun, 21 Sep 2003, Richard Ellis wrote: The only difference between these files was different -N values. All other denoise/mpeg2enc parameters were identical. What value are you using for -q? What I am finding

Re: [Mjpeg-users] Re: JVC switcher Intel vs AMD

2003-09-20 Thread Richard Ellis
On Sat, Sep 20, 2003 at 10:05:35AM -0700, Steven M. Schultz wrote: On Sat, 20 Sep 2003, Bernhard Praschinger wrote: Audio: ( Samplerate * Channels * Bitsize ) / (8 * 1024) Video: (width * height * framerate * quality ) / (200 * 1024) You have to add both values together. To get the

Re: [Mjpeg-users] Disk data capture rates for video

2003-09-20 Thread Richard Ellis
On Sat, Sep 20, 2003 at 10:36:50AM -0700, Steven M. Schultz wrote: Hi - From: Bernhard Praschinger [EMAIL PROTECTED] Audio: ( Samplerate * Channels * Bitsize ) / (8 * 1024) Video: (width * height * framerate * quality ) / (200 * 1024) You have to add both values together. To get

Re: [Mjpeg-users] Disk data capture rates for video

2003-09-20 Thread Richard Ellis
On Sat, Sep 20, 2003 at 11:17:11AM -0700, Steven M. Schultz wrote: On Sat, 20 Sep 2003, Richard Ellis wrote: Real world numbers: Super! Thanks - always good to have those ;) Here's some more: 34 minutes of capture, DC10+, 320x480 frame size, NTSC, capture quality setting

Re: [Mjpeg-users] mpeg2enc -Q differences between 1.6.0 and 1.6.1.90

2003-09-19 Thread Richard Ellis
On Wed, Sep 17, 2003 at 07:57:14PM -0700, Steven M. Schultz wrote: On Wed, 17 Sep 2003, Richard Ellis wrote: is driven by Q (in that section at least) was reworked quite a bit in January. That would account for the difference I'm seeing in the new mpeg2enc's Q that does not seem

Re: [Mjpeg-users] Re: JVC switcher Intel vs AMD

2003-09-19 Thread Richard Ellis
On Thu, Sep 18, 2003 at 08:45:45PM -0700, Steven M. Schultz wrote: Is this for protection against a drive failure?DV (or MJPEG) capture's data rate requirements are extremely modest (in the ~3.5MB/s range - even a notebook drive can sustain that without breathing hard). It depends on

Re: [Mjpeg-users] Re: JVC switcher Intel vs AMD

2003-09-19 Thread Richard Ellis
On Fri, Sep 19, 2003 at 09:36:55PM -0700, Steven M. Schultz wrote: 640x480? Thought fullframe NTSC was 704x480 - or is the DC10 using square pixels instead of the Rec.601 10:11 pixels? DV's weird - it gets an extra 8 pixels on each side for 720x480. The video digitizer chip that's used on

Re: [Mjpeg-users] mpeg2enc -Q differences between 1.6.0 and 1.6.1.90

2003-09-19 Thread Richard Ellis
On Fri, Sep 19, 2003 at 07:02:54PM -0700, Steven M. Schultz wrote: The -N parameter does work quite well for shrinking a file, but it seems it's a bit sensitive. In a test run, with -N 0.0 I got a file size of 748,032 kbyte. With -N of 0.1 I got 708,956 kbyte on the same input. The

Re: [Mjpeg-users] mpeg2enc -Q differences between 1.6.0 and 1.6.1.90

2003-09-17 Thread Richard Ellis
On Wed, Sep 17, 2003 at 03:08:25PM -0700, Steven M. Schultz wrote: On Wed, 17 Sep 2003, Richard Ellis wrote: Has anyone else noticed that the -Q parameter to mpeg2enc v 1.6.1.90 seems to have much less effect than it did in version 1.6.1? I've ... If you look at the CVS

Re: [Mjpeg-users] lavrec and at

2003-06-05 Thread Richard Ellis
--- Dirk [EMAIL PROTECTED] wrote: Hi all. Can anyone explain me why lavrec doesn't work very well with the at command? It doesn't matter if I use a script with a lavrec command or if I use the lavrec command directly with at. Lavrec does exactly what I want except scheduling a capture

Re: [Mjpeg-users] --reduce-hf question

2003-03-11 Thread Richard Ellis
. However, my (informal) tests seemed to indicate that --keep-hf did pretty good with denoised (i.e. yuvdenoise/yuvmedianfilter) analog source material. I wasn't sure if it was just my imagination. Anyone have any experience with this? Steven Boswell, [EMAIL PROTECTED] Richard Ellis [EMAIL

[Mjpeg-users] yuvdenoise parameter handling bug as well

2003-03-07 Thread Richard Ellis
While we are on the subject of parameter handling bugs in the yuv* tools, this one also exists: Call yuvdenoise with this parameter: -b 2,2,-2,-2 which according to the man page should do this: Sometimes it may be usefull to have relative coordinates like this: yuvdenoise -b 16,16,-16,-16

Re: [Mjpeg-users] interlace bug in yuvmedian filter

2003-03-04 Thread Richard Ellis
--- Steven M. Schultz [EMAIL PROTECTED] wrote: Hi - From: Richard Ellis [EMAIL PROTECTED] From: [EMAIL PROTECTED] Ok, so I just discovered that yuvmedianfilter has a -I switch for interlaced inputs (it switches to separate field filtering). Shouldn't this be something

Re: [Mjpeg-users] interlace bug in yuvmedian filter

2003-03-03 Thread Richard Ellis
--- Steven M. Schultz [EMAIL PROTECTED] wrote: Hi - From: [EMAIL PROTECTED] Ok, so I just discovered that yuvmedianfilter has a -I switch for interlaced inputs (it switches to separate field filtering). H, I haven't noticed the jerkiness. Seemed to save some bits

Re: [Mjpeg-users] video output

2003-02-25 Thread Richard Ellis
--- Florin Andrei [EMAIL PROTECTED] wrote: On Thu, 2003-02-20 at 08:44, Bernhard Praschinger wrote: What do you guys recommend as a TV out device for a Linux computer? The requirements as i can think of right now: - drivers available for free (or coming with the device) but anyway

Re: [Mjpeg-users] lav2wav from movtar file is gurgly

2003-01-05 Thread Richard Ellis
--- Ronald Bultje [EMAIL PROTECTED] wrote: Hi Brian, On Sun, 2003-01-05 at 16:28, [EMAIL PROTECTED] wrote: When I use lavrec to create a movtar file, and then try to extract the audio from the movtar file with lav2wav, it comes out gurgly. By gurgly, imagine the filter a special