more capturing troubles

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Cygnus: 2005-07-05 06:55:54 pm

2005-07-05 06:55:22 pm

Ben Goldberg

I can't believe I have more problems, but I do. I captured my AUF run yesterday. It's a long run, so I didn't want to rewatch it. I decided to rewatch one level though. For about 30 seconds in that level, it only recorded about 3 frames per second, but the sounds fine. I'm not sure if this happens in other parts of the video, but I'm pretty sure it does. The first 15 minutes of the video is fine, though.

All my programs were shut off, except this one. I was recording in 320x240 resolution. I don't know what went wrong. Do I need a real good computer to record 50 minutes straight without dropping any frames?

I had one more problem, but I'm sure this one can be fixed. As I mentioned, my sound came out fine, except it was out of sync at the end of the movie. At the end of the video, it's almost 1 second out of sync. At the middle of the video, it was almost half a second out of sync. It seems that the sound becomes out of sync gradually. Is there a tool in VDub to fix that?

Thread title:

Radix

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Radix: 2005-07-05 11:53:59 pm

2005-07-05 11:53:34 pm

I'm addicted to games

Quote:

Do I need a real good computer to record 50 minutes straight without dropping any frames?

My computer is only 450 mhz and it captures for hours just fine. I drop 2-3 frames a second because my crappy card is on USB 1, so it has nothing to do with the mhz. The CPU is only about 18% in use when I capture. You're capturing to huffyuv right?

Quote:

I had one more problem, but I'm sure this one can be fixed. As I mentioned, my sound came out fine, except it was out of sync at the end of the movie. At the end of the video, it's almost 1 second out of sync. At the middle of the video, it was almost half a second out of sync. It seems that the sound becomes out of sync gradually. Is there a tool in VDub to fix that?

There's something in capture mode having to do with sound synch... I can't tell you what mine is set at right now though, but try it out.

Cygnus

Edit history:

Cygnus: 2005-07-06 06:35:44 pm

2005-07-06 05:16:15 pm

Ben Goldberg

Quote:

You're capturing to huffyuv right?

I am now. The only problem is, every few seconds, 1/3 the screen will flash with part of the picture. Two pictures are overlapping each other when it flashes. I followed Nate's FAQ exactly, so I don't know.

I was using another program to capture before, BTW.

EDIT: Well, it seems the problem fixed itself. Really, all I did was leave the VDub open while I was playing a game, and now the flashing lines are gone and it works fine. Hopefully it won't come up again. Time to redo my run...

EDIT 2: I closed and reopened VDub, and the problem came up again. I hope there's a solution to it, so I don't have to wait a half hour every time I want to record for the flashing lines to go away.

Cygnus

2005-07-07 08:10:10 am

Ben Goldberg

I messed with the program all day, but nothing changed. I don't know if it would help to see what it looks like, but if it does...

http://www.vortiginous.com/cygnus/flashinglines.avi

Cygnus

Edit history:

Cygnus: 2005-07-11 08:07:17 pm

2005-07-11 07:20:44 pm

Ben Goldberg

All right, I downloaded the newest version of VirtualDub, and it seemed to fix the problem. The problem now is that when I record, I get cracks and pops in the sound. I went searching around the VirtualDub site to see if I could figure out the problem, when I came across this...

Quote:

I get sound, but it has cracks and pops in it.My video has greenish lines in it. Occasionally, I see thin horizontal strips in the captured video that looks like they came from the last frame?
No one has a rock-solid answer for why these problems occur, but it appears to be caused by contention on the PCI bus, which then prevents the sound card and video capture devices from emptying their buffers in time. This problem is reported more frequently on motherboards that have a VIA chipset, or in systems that have a SoundBlaster Live! sound card. In the former case, try upgrading your VIA 4-in-1 drivers first, and if that is not sufficient, check for a motherboard BIOS update that specifically addresses your problem. As for the Live!, the Creative driver is known to cause problems by lowering the latency timer of the PCI bus. (The result is similar that of making the red lights appear every ten seconds at a four-way intersection.) In that case, try installing the Microsoft drivers instead.

Also, check the websites for the hardware manufacturers to see if they have utilities which may help. For instance, Pinnacle has a PCI adjustment utility for some of their cards.

If you are using RGB24 for your raw capture format, switch to YUY2 to drop your raw datarate by 33% (see below), which may be enough to lower PCI bus load to workable levels.

My last problem was...

Quote:

Occasionally, I see thin horizontal strips in the captured video that looks like they came from the last frame?

And now it's...

Quote:

I get sound, but it has cracks and pops in it.

So I went from one problem to another, but the source of the problem seems to be the same. I'm using YUY2 for my raw capture format, so it's not that. The other stuff, quite frankly, I don't understand. That's where I need help, I think. :-/

EDIT: I downloaded a driver and a patch for my capture card from their website, but it didn't fix anything.

All right, I downloaded the newest version of VirtualDub, and it seemed to fix the problem. The problem now is that when I record, I get cracks and pops in the sound. I went searching around the VirtualDub site to see if I could figure out the problem, when I came across this...

[quote][list]I get sound, but it has cracks and pops in it.
My video has greenish lines in it. 
Occasionally, I see thin horizontal strips in the captured video that looks like they came from the last frame?

[/list]
No one has a rock-solid answer for why these problems occur, but it appears to be caused by contention on the PCI bus, which then prevents the sound card and video capture devices from emptying their buffers in time.  This problem is reported more frequently on motherboards that have a VIA chipset, or in systems that have a SoundBlaster Live! sound card.  In the former case, try upgrading your VIA 4-in-1 drivers first, and if that is not sufficient, check for a motherboard BIOS update that specifically addresses your problem.  As for the Live!, the Creative driver is known to cause problems by lowering the latency timer of the PCI bus.  (The result is similar that of making the red lights appear every ten seconds at a four-way intersection.)  In that case, try installing the Microsoft drivers instead.

Also, check the websites for the hardware manufacturers to see if they have utilities which may help.  For instance, Pinnacle has a PCI adjustment utility for some of their cards.

If you are using RGB24 for your raw capture format, switch to YUY2 to drop your raw datarate by 33% (see below), which may be enough to lower PCI bus load to workable levels.
[/quote]

My last problem was...

[quote]Occasionally, I see thin horizontal strips in the captured video that looks like they came from the last frame? [/quote]

And now it's...

[quote]I get sound, but it has cracks and pops in it.[/quote]

So I went from one problem to another, but the source of the problem seems to be the same. I'm using YUY2 for my raw capture format, so it's not that. The other stuff, quite frankly, I don't understand. That's where I need help, I think.  :-/

EDIT: I downloaded a driver and a patch for my capture card from their website, but it didn't fix anything.

Cygnus

2005-07-19 12:16:32 am

Ben Goldberg

Well, I seemed to have fixed my problem, but maybe not. I tried recording something today, and the crackling was back. I noticed the sound was louder than when I recorded my AUF run a few days ago.

If I lower the sound, I think it'll get rid of the crackling. On VDub 1.6.9, there's no option to change the recording level of the sound. In the old version of VDub I had, there was an option to do so. There's no reason to get rid of that option, so where is it?

Molotov

Edit history:

Molotov: 2005-07-19 01:58:50 am

2005-07-19 01:57:24 am

Hey. It's still there. It's under Audio > Windows Mixer. Adjust the Line In.

Cygnus

2005-07-19 02:04:41 am

Ben Goldberg

Ah, thank you very much.