Re: [Mjpeg-users] glav and lossless avi's
On Sun, Jan 12, 2003 at 08:14:50AM +0100, Bernhard Praschinger wrote: Hallo I want to capture (using streamer), edit (using what, I don't yet know), then process into DivX (using mencoder). The capture file is about 40GB for 2 hours, so I don't want big temporary files (which is why I though of glav, since it uses edit lists. Or is glav only for MJPEG streams? Correct, the whole mjpeg tools can only handle mjpeg avi's, and only AVI's up to 2GB. I got it working. Apparently, glav (and most other lav and yuv tools), can handle quicktime with YV12 encoding. Streamer can handle this too. So you can capture with streamer (or whatever you're prefered tool is), edit with glav, then do the following lav2wav foo.edl foo.wav lav2yuv foo.edl | mencoder -audiofile foo.wav ... - A big thanks to Ave on #mplayer for this. -- Cameron Kerr Email: [EMAIL PROTECTED] Website: http://nzgeeks.org/cameron/ --- 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] glav and lossless avi's
Hi there, I get my captured data using streamer (part of XawTV package) from my BT878 card (lavrec exhibits problems). I capture into .avi with RGB24 frames, so I have a lossless datastream from which I can process later (to get rid of ads etc). I want to capture (using streamer), edit (using what, I don't yet know), then process into DivX (using mencoder). The capture file is about 40GB for 2 hours, so I don't want big temporary files (which is why I though of glav, since it uses edit lists. I though I would use lavtrans with the editlist and feed the output directly into mencoder. Or is glav only for MJPEG streams? Thanks -- Cameron Kerr Email: [EMAIL PROTECTED] Website: http://nzgeeks.org/cameron/ --- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Question about SVCD aspect
On Wed, Jan 08, 2003 at 10:30:59PM +0100, Andrew Stevens wrote: Oh boy 500kbps for the video! Basically, that just is not doable with current codecs at reasonable display resolutions, it is even worse if you have captured (noisy) material. A realistic minimum is more like 900kbps. Well, I can't capture at greater than 320x240 anyway, so it works quite sufficiently for me (for TV shows anyway). Viewing fullscreen is of course quite ugly up close, but passable at a distance. I think I'll aim for about 400MB for an hour for stuff I want to keep. -- Cameron Kerr Email: [EMAIL PROTECTED] Website: http://nzgeeks.org/cameron/ --- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] Question about SVCD aspect
On Tue, Jan 07, 2003 at 04:30:11PM +0100, Bernhard Praschinger wrote: Thanks for your help everyone. I've decided that mpeg2 based solutions are too intensive for my intended application. I am now trying DIVX based solutions (using lav2divx), but I'm having a lot of trouble getting it working at the moment (possibly avifile related). For instance, things like bitrate, crispness, and keyframes are not set, so I can't get it below my target of 5MB/minute. I'll check out VirtualDub (under WINE and in Windows) until such a time as avifile is working correctly. FWIW, the lav2divx command I'm using is lav2divx -E DIV5 -b 600 -o stream.divx stream.avi Win32 plugin : Using Win32 dll library: divxcvki.dll Win32 video encoder : W32 Quality 0 KeyFrames: BitRate: 91 Win32 video encoder : W32 Quality 0 KeyFrames: BitRate: 60 -- Cameron Kerr Email: [EMAIL PROTECTED] Website: http://nzgeeks.org/cameron/ --- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com ___ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
Re: [Mjpeg-users] green screen and noise
I've got it working. In short, I use this command lavrec --software-encoding --format=a --input=P --use-read --geometry=320x240 --audio-source=l --audio-volume=100 --time=10 test.avi This is using the loopback cable that goes into the line-in in my sound-card. Using a sound-mixer, set the recording source to Line (I use rexima), and make the volume about 90% Note that I have used --input=P. I am recording from the Composite1 channel, but P is for SVHS. The key thing to note is that these letters are dual-purpose. I have a BT878 card, and if you look at the second part of each latter p - PAL through Composite or 1st Bt8x8 input P - PAL through SVHS- or 2nd Bt8x8 input t - PAL through TV-tuner- or 3rd Bt8x8 input you will see that we are using the 2nd Bt8x8 input (which is Composite). I think the documentation could point this out somewhat better. The only problem I have now is that playback (with lavplay) is rather quiet. -- Cameron Kerr Email: [EMAIL PROTECTED] Website: http://nzgeeks.org/cameron/ --- 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] Question about SVCD aspect
Hi all. I'm creating my first SVCD (30 minutes). After mpeg2enc (I'm following the steps in the HOWTO), I preview it with mplayer, and it shows up as a strange aspect, taller than it ought to be, and and with thick black side borders. Also, the image isn't terribly great on the bottom (colour out of whack, a bit, ahhh, streaky???). Is this normal for a SVCD (captured using PAL, if it matters). I've yet to burn it (I'll need to go to a friends place to test it on his DVD player (plays SVCD also)). Also, is it normal for a 30 minute recoding to take about 12 hours for mpeg2enc to process? Thanks -- Cameron Kerr Email: [EMAIL PROTECTED] Website: http://nzgeeks.org/cameron/ --- 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] green screen and noise
Keywords: green noise composite v4l video4linux lavrec bttv I'm new to mjpegtools and video capture in general. I would like to make a PVR so I can record shows into SVCD (so I'll actually watch, rather than forget them as I so often do). I have the following hardware and software installed AMD K6-2/450 256MB RAM 80GB+ HDD bt878 (card=30) video4linux Sound Blaster Live! (emu10k1 module) Linux 2.4.20 mjpegtools 1.6.1 compiled from source (./configure --without-aviplay). xawtv and mplayer can view the images perfectly well (although the colour and brightness need tweaking). I'm currently viewing through composite (Composite1). Sound comes from line in (/dev/dsp), via loopback cable from the card. I use this command to try to capture some video. lavrec --software-encoding --format=a --input=p --audio-source=l --mute --use-read --geometry=320x240 --time=10 test.avi (I've tried using -d1 and -d2 in lue of --geometry, but it refuses to start. I think its because I'm using software encoding). However, when I play it back (using lavplay or mplayer) shows as just a green with noise at the top 1/5th of the screen, and the sound is noisy. I cannot reproduce what I see using xawtv. Normally, my VCR (from which I an getting my source from) is blue, so its not that. /dev/video is not in use while lavrec is recording. Also (not sure if its related), but I get a very large (110 over 10 seconds) inserted frames (0 deleted). There are no audio errors or lost frames. Additionally, when lavrec exits, it complains with the following line **ERROR: [lavrec] Error resetting tuner audio params: Invalid argument Can anyone help me with this? PS. Is there any useful IRC channels out there for this? Thanks in advance. -- Cameron Kerr Email: [EMAIL PROTECTED] Website: http://nzgeeks.org/cameron/ --- 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
