Solved

Capturing Video to Disk with lossless frames

Posted on 2002-06-20
13
184 Views
Last Modified: 2010-04-06
ok.  I've tried several different capturing programs off the net and get the same results with them all.  When I try to capture a 2 hour video from my camcorder, I get frames being dropped.  So, by the end of the recording, my audio out of sync with the video by a varing amount (a second to several seconds).   I want to just start the tape, walk away and come back to a recorded set of files.
My PC is a 900 mhz, 40 gb drive with 20gb remaining, nothing else running, matrox g200 capture card, clean HD, defragged.   I can record about 15 minutes with only a few dropped frames, but it keeps building up.
I am trying to eventually get the video onto a CD in VCD format.  (no problem there)
Is there such a thing as a capture program (hopefully free) that will compensate for dropped frames so the audio doesn't get out of sync by the end of 2 hours?



0
Comment
Question by:HJohnson
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 4
  • 2
  • +2
13 Comments
 
LVL 30

Accepted Solution

by:
weed earned 100 total points
ID: 7097598
It may be that your HD is just too slow to do it. Uncompressed video+audio is ALOT of data being written very quickly. If your HD isnt up to it, youll lose frames. That's why most of the video folks use 10k+ rpm drives or Raid arrays. I really doubt that its a software issue.
0
 
LVL 1

Author Comment

by:HJohnson
ID: 7097968
You could be right - its a 5400 rpm drive.  How do you get a 10k+ rpm drive?  Is this a scsi drive?   Would a 7200 rpm drive do the trick?  


0
 
LVL 30

Expert Comment

by:weed
ID: 7099186
7200 is going to be borderline and you dont want to blow the bucks on it and find out its not gonna cut it. I dont think they make a 10k rpm ATA drive but 2 ATA 66 drives together could do the trick.
0
Enroll in June's Course of the Month

June's Course of the Month is now available! Every 10 seconds, a consumer gets hit with ransomware. Refresh your knowledge of ransomware best practices by enrolling in this month's complimentary course for Premium Members, Team Accounts, and Qualified Experts.

 
LVL 3

Expert Comment

by:ygal02
ID: 7107468
SCSI drives get up to 15k rpm these days.
0
 
LVL 30

Expert Comment

by:weed
ID: 7108382
Yep, and yesterday adaptec released a scsi-320 card. Dunno where youre gonna find drives for it though..heh.
0
 
LVL 1

Author Comment

by:HJohnson
ID: 7108469
So, does this mean that video capture software can't compensate for the dropped frames?
0
 
LVL 30

Expert Comment

by:weed
ID: 7108506
That's right. Imagine trying to drink all the water coming from a fire hydrant. You'd get a mouthfull and before you could swallow it, you'd get another mouthfull and it doesn't stop. It backs up to a point where you just have to spit it out....A dropped frame. Even the best software will choke if the HD cant keep up.
0
 
LVL 1

Author Comment

by:HJohnson
ID: 7108599
What about compression?  Can the video be compressed (using CPU) when capturing - this would require less HD resources then, wouldn't it?
According to the capture software (most of them) the cpu is only utilized ~10% when capturing.
0
 
LVL 30

Expert Comment

by:weed
ID: 7108618
Some input devices can do on the fly compression but by doing so youre losing quality which is generally a bad idea.
0
 
LVL 3

Expert Comment

by:TheRedGuy
ID: 7109351
You might want to try VirtualDub. You can download it at www.vcdhelp.com.

It doesn't use the native windows code for capturing and gives you a diagnostic for your system in order to determine optimum settings.

Worth a try...
0
 
LVL 3

Expert Comment

by:TheRedGuy
ID: 7109357
Oh and there are lossless codecs out there - try a search engine.

That way you won't lose quality and will be writing less data to your HD...
0
 
LVL 1

Expert Comment

by:OGee
ID: 7166394
you need to free up more hardisk space or get new harddisk and use the adobe premier 6 to capture a series of file 20 Min Each one of them.

But I recommend to get a SCSI Harddisk cause its faster than the IDE harddisks.
0
 
LVL 1

Author Comment

by:HJohnson
ID: 7166770
Thanks Weed.  For the short term, I'm going to capture smaller files at one go and just merge them together.  A bit more work, but what the hey.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many programs have tried to outwit PowerPoint in terms of technology and skill. These programs, however, still lack several characteristics that PowerPoint has possessed from the start. Here's why PowerPoint replacements won't entirely work for desi…
Technology opened people to different means of presenting information, but PowerPoint remains to be above competition. Know why PPT still works today.
Learn how to create interesting presentations by including videos to keep your audience engaged using Prezi. Select "Insert" from the top menu in your Prezi editor: Select "YouTube Video": Paste the video URL into the prompt: "Select "Insert":…
Learn the basics of inputting and editing your text components in Prezi. We will cover how to set styles, position, and group your text components. In your Prezi editor, click anywhere on the canvas to add text: A flashing cursor informs you that yo…

729 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question