Re: [vox-tech] ripping video: wierd interleaving effect on fast motion
OK, I'm jumping into this conversation late, but here are my 2 cents. 1. I have a KWorld el-generico TV tuner that works just fine with bttv and xawtv. I believe it is the same chipset that comes in the Haupaggue (spelling?) cards. I love xawtv. It is one of the _killer apps_ for sure. I configured all the settings in .xawtv and got exactly the TV in a window while I'm reading my e-mail I was looking for. 2. I've tried serveral combinations of recording with xawtv and mencoder and ending up with nothing even remotely inspiring. I always hoped I could write scripts called by cron to do some serious command line PVRing, but haven't gotten close yet. It's got to be possible, right? That's what TIVO is all about: Linux with a TV Card, a nice case, some specialized software, and a remote control. 3. Here is the part I don't get! These cards are supposed to do HARDWARE MPEG 1 and 2 encoding. Savign to AVI and then re-encoding into some MPEG format seems like ripping MP3s into WAV and then back out to OGG. I admit I don't get how any of this works, but shouldn't it be more straigtforward to just _catch_ the already encoded MPEG data and put it somewhere??? Dave M. On Tue, 14 Oct 2003 [EMAIL PROTECTED] wrote: hi all, ok, i ripped a southpark video with: System: AMD Athlon 1.3GHz 2.4.22 w/ low latency Radeon QD very unloaded machine name: southpark1.avi ripper: xawtv -noxv audio format: 8bit mono sample rate: 44100 video format: 24bit TrueColor (LE: bgr) fps: 30 video size: 384x288 the next step is to compress/encode it. however, i first tried to watch the avi with mplayer. the quality was bad. whenever there was fast motion, it looked like the areas with fast motion had white horizontal lines interleaved with the normal video. mplayer gave output which looks like it's related to this problem: badly interleaved AVI file. switching to -ni mode. i'm not sure what to do. i don't think it's a matter of my system not being powerful enough. i did tests at low fps of a few seconds of video, and got the same interleaved effect. it was actually worse at lower fps. and there really aren't that many options with xawtv. i've played with fps, sample rate, and video format. nothing seems to help. in xawtv, there are options to save as single file raw video and apple quicktime format. i take it these are container formats that sam was talking about. any suggestions? thanks! pete -- GPG Instructions: http://www.dirac.org/linux/gpg GPG Fingerprint: B9F1 6CF3 47C4 7CD8 D33E 70A9 A3B9 1945 67EA 951D ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech
Re: [vox-tech] ripping video: wierd interleaving effect on fast motion
On Wed, 15 Oct 2003, David Margolis wrote: 3. Here is the part I don't get! These cards are supposed to do HARDWARE MPEG 1 and 2 encoding. Savign to AVI and then re-encoding into some MPEG format seems like ripping MP3s into WAV and then back out to OGG. I admit I don't get how any of this works, but shouldn't it be more straigtforward to just _catch_ the already encoded MPEG data and put it somewhere??? I think v4l doesn't support receiving compressed video. The way to receive the stream is probably specific for each card anyway so there wouldn't be a easy way to support them all unless you start writing a driver for each card. -Mark -- Mark K. Kim http://www.cbreak.org/ PGP key available on the website PGP key fingerprint: 7324 BACA 53AD E504 A76E 5167 6822 94F0 F298 5DCE ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech
Re: [vox-tech] ripping video: wierd interleaving effect on fast motion
David Margolis wrote: OK, I'm jumping into this conversation late, but here are my 2 cents. 1. I have a KWorld el-generico TV tuner that works just fine with bttv and xawtv. I believe it is the same chipset that comes in the Haupaggue (spelling?) cards. I love xawtv. It is one of the _killer apps_ for sure. I configured all the settings in .xawtv and got exactly the TV in a window while I'm reading my e-mail I was looking for. 2. I've tried serveral combinations of recording with xawtv and mencoder and ending up with nothing even remotely inspiring. I always hoped I could write scripts called by cron to do some serious command line PVRing, but haven't gotten close yet. It's got to be possible, right? That's what TIVO is all about: Linux with a TV Card, a nice case, some specialized software, and a remote control. You might want to check out MythTV (http://mythtv.org). I haven't used it, because my TV card can only capture under Windows, but it looks like a very slick project. If nothing else, you might get some tips from looking around. Also, I've found the mplayer-users list (archived on mplayerhq.hu) to be a useful source of video capture/encoding tips. Matt 3. Here is the part I don't get! These cards are supposed to do HARDWARE MPEG 1 and 2 encoding. Savign to AVI and then re-encoding into some MPEG format seems like ripping MP3s into WAV and then back out to OGG. I admit I don't get how any of this works, but shouldn't it be more straigtforward to just _catch_ the already encoded MPEG data and put it somewhere??? Dave M. On Tue, 14 Oct 2003 [EMAIL PROTECTED] wrote: hi all, ok, i ripped a southpark video with: System: AMD Athlon 1.3GHz 2.4.22 w/ low latency Radeon QD very unloaded machine name: southpark1.avi ripper: xawtv -noxv audio format: 8bit mono sample rate: 44100 video format: 24bit TrueColor (LE: bgr) fps: 30 video size: 384x288 the next step is to compress/encode it. however, i first tried to watch the avi with mplayer. the quality was bad. whenever there was fast motion, it looked like the areas with fast motion had white horizontal lines interleaved with the normal video. mplayer gave output which looks like it's related to this problem: badly interleaved AVI file. switching to -ni mode. i'm not sure what to do. i don't think it's a matter of my system not being powerful enough. i did tests at low fps of a few seconds of video, and got the same interleaved effect. it was actually worse at lower fps. and there really aren't that many options with xawtv. i've played with fps, sample rate, and video format. nothing seems to help. in xawtv, there are options to save as single file raw video and apple quicktime format. i take it these are container formats that sam was talking about. any suggestions? thanks! pete -- GPG Instructions: http://www.dirac.org/linux/gpg GPG Fingerprint: B9F1 6CF3 47C4 7CD8 D33E 70A9 A3B9 1945 67EA 951D ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech
Re: [vox-tech] ripping video: wierd interleaving effect on fast motion
On Wed, Oct 15, 2003 at 09:13:10AM -0700, Matt Holland wrote: You might want to check out MythTV (http://mythtv.org). I haven't used it, because my TV card can only capture under Windows, but it looks like a very slick project. If nothing else, you might get some tips from looking around. last night at nblug we had a presentation on mythTV. It *is* slick. The mpeg4 encoding looked very nice and it had the option to record raw and encode later (in case you don't have the CPU to do it in one shot. I expected an Alpha level product but instead saw something which blows a stock Tivo out of the water. That's just my impression; I haven't used either the Tivo or MythTV personally. There are a bunch of screenshots at mythtv.org -troy ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech
Re: [vox-tech] ripping video: wierd interleaving effect on fast motion
On Wed, 15 Oct 2003 16:22:10 -0700, Ken Herron wrote: One nice feature of tivo (and replaytv) is that they can be set to control an external cable/satellite converter instead of using their internal tuner for everything. They come with a little ifrared LED that sticks onto the converter's IR port. The tivo/replaytv sets its own tuner to channel 4 (or uses a composite video input) and changes channels by sending remote-control commands to the converter. This way, you can record from scrambled channels and so on. Do any of the convert-your-PC-into-a-tivo products have anything like this? MythTV does support this via an IR Blaster...an IR transmitter that connects generally via a serial port. Any blaster device supported by the lirc driver will work. I've even seen schematics with RadioShack part numbers included that you can put together for a few bucks. Some cable/satellite systems also have some sort of data port on the back of the unit, often RJ-11, but also commonly as a 9pin serial port. The unit can be controlled via this port also (well, most units anyways. The protocol varies depending on manufacturer) and more reliably than via IR. I used MythTV pretty heavily for a while, but I currently don't have a card with TV-Out, so it became more trouble than it was worth. Watching on a 17 monitor in the computer room isn't nearly as comfortable as watching a 32 from the couch. :) I haven't used it since July (around the 0.10 release) but it was pretty rock solid back then, and it looks like a lot of new features have been added since then. Development is quite fast paced. I was using CVS and rebuilding at least a couple times a week to get the new features. ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech
Re: [vox-tech] ripping video: wierd interleaving effect on fast motion
On Wed, Oct 15, 2003 at 05:36:00PM -0700, Rob Rogers wrote:
MythTV does support this via an IR Blaster...an IR transmitter that
connects generally via a serial port. Any blaster device supported by the
lirc driver will work. I've even seen schematics with RadioShack part
numbers included that you can put together for a few bucks.
Assuming RadioShack still has it any more. You know, they need all that
space for their cell phone salespeople, big screen TVs and RC cars.
:^P
-bill ('null modem?' you mean, like, for a phone?) kendrick
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Re: [vox-tech] ripping video: wierd interleaving effect on fast motion
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Tuesday 14 October 2003 02:17 pm, [EMAIL PROTECTED] wrote: hi all, ok, i ripped a southpark video with: System: AMD Athlon 1.3GHz 2.4.22 w/ low latency Radeon QD very unloaded machine name: southpark1.avi ripper: xawtv -noxv audio format: 8bit mono sample rate: 44100 video format: 24bit TrueColor (LE: bgr) fps: 30 video size: 384x288 the next step is to compress/encode it. however, i first tried to watch the avi with mplayer. the quality was bad. whenever there was fast motion, it looked like the areas with fast motion had white horizontal lines interleaved with the normal video. mplayer gave output which looks like it's related to this problem: badly interleaved AVI file. switching to -ni mode. This refers to audio/video interleave, not interlacing. i'm not sure what to do. i don't think it's a matter of my system not being powerful enough. i did tests at low fps of a few seconds of video, and got the same interleaved effect. it was actually worse at lower fps. and there really aren't that many options with xawtv. i've played with fps, sample rate, and video format. nothing seems to help. in xawtv, there are options to save as single file raw video and apple quicktime format. i take it these are container formats that sam was talking about. any suggestions? try passing mplayer '-vop pp=fd' This uses the FFMpeg Deinterlacer. Your machine should have no problem doing this in real time. If it doesn't work, it's because the video was scaled without being deinterlaced, and you can't really get rid of it. Also, have you tried recording video with nupplevideo yet? (I mentioned it, along with some options to use with mencoder in another post) It should be able to handle 640x480 captures at full framerate. - -- PGP/GPG Fingerprint: 3B30 C6BE B1C6 9526 7A90 34E7 11DF 44F3 7217 7BC7 On pgp.mit.edu, import with `gpg --keyserver pgp.mit.edu --recv-key 72177BC7` Also available at http://www.cal.net/~ryan/ryan_at_mother_dot_com.asc -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.2 (GNU/Linux) iD8DBQE/jKiTEd9E83IXe8cRAqJ4AKCz1hIFrUcdORYbVVuhY1lhI/cF4QCfesup VIitLwCxu8J5PiHEXlWGcrc= =jt62 -END PGP SIGNATURE- ___ vox-tech mailing list [EMAIL PROTECTED] http://lists.lugod.org/mailman/listinfo/vox-tech
