![]() The only other machine with PCIe slots that I have only has on-board Intel video. For comparison, I tried capturing with a Canopus AVDC-300 over Firewire and that was perfectly in sync, but I like the captured detail and color rendering with the Blackmagic card better (I gather the DV colorspace is more limited). I was hoping that this was a known driver issue, or I could try out a beta Windows 8 driver to see if there was improvement. I also tried capturing with Premiere CS6 instead of Media Express with exactly the same results. If there's a resource issue, shouldn't the software detect dropped frames and report the error? I do have "stop on dropped frames" enabled. when the recorder is stopped and restarted, or switched between SP and EP mode - I'm not sure what's on many of these tapes, so I prefer to ingest the entire tape and then extract anything worth keeping), so as a test I transferred a perfectly recorded 90 minute SP S-VHS tape, and the sync error still occurred. I thought it might be related to the loss of signal (i.e. There are no video artifacts at those points that I can see. ![]() It seems to get behind in bursts rather than linearly, but it's hard to tell where the increments are. With the longer captures, an example: at the 45 minute mark, audio precedes the video by about 8 seconds. I'd expect both video and audio to be missing unless there is simply no error detection. Since I'm capturing to an interleaved AVI file, I don't see how disk write speed could affect the recording. The machine has 16GB of memory and CPU utilization during capture is low as well. I'm ripping to a nearly empty 4TB Hitachi disk, and although the machine only has SATA-1 (3gb/sec) ports, the Windows 8 resource monitor indicates that the disk maxes out at 20% of its usable bandwidth while capturing. I can understand that there might be a resource issue, but the card reports no dropped frames and I've tried 8 or 9 long captures that resulted in A/V sync errors every time, sometimes starting within the first minute. You can try a simple control test by testing the card in a different system to see if the issue is indeed with the system or just a resource issue. Lastly, 9 out 10 Dells do work but about 1 in 10 exhibit problems or are simply not compatible. You may also need to consider using a compressed capture option instead of uncompressed. Their is a small chance that you will need a RAID 0 with 2 hard drivers for your video capture of uncompressed video. With SD you should be able to capture the video 99% of the time. It is more common in HD and no so much in SD. The progressive increase in audio and video off sync is typically a resource issue. During capture, it's using 10-15% of the CPU and 20% disk bandwidth (Win8 gives you nice stats).Īny advice would be really welcome at this point since this is the closest I've gotten to an acceptable solution. The computer is a Dell XPS 630x: x58 motheboard, Intel i920, 16GB RAM, NVidia GTX-290, and the capture disk is a 4TB Hitachi with over 2TB of free space. * Continue playback in the background is checked * Stop capture if dropped frames are detected is checked * Tried both settings for "Use dropped frame timecode" with the audio drift in both cases I haven't yet tried to capture in a different application (I figured if Media Express can't get it right, nothing will). Mind you, this is within Media Express, but I saw the same thing after loading the clip into Premiere Pro CS6 and Cyberlink PowerDirectory 11 (trial version).Īny advice on how to get this fixed? I'd hate to have to return the card because the quality is so much better than any of the other solutions I've tried and they didn't have this problem. The sound and picture are perfectly synchronized during the capture but slowly but surely drift out of sync, so during playback, it's noticeable after a few minutes, and off by many seconds after a couple of hours. The problem I'm having is with audio sync. The file sizes are huge, but that's not unexpected. ![]() I was pleasantly surprised at how smoothly everything went I've captured about 10 hours of video while testing so far with no dropped frames. The install went flawlessly and I was able to capture video and audio over S-Video/analog audio at SMTP 480i from my JVC S-VHS deck using Media Express immediately after a reboot. I'm using "Blackmagic_Desktop_Video_Windows_9.6.8" (the latest version). Instead of using the disc in the package, I downloaded the software from the BlackMagic website as recommended. I'm a relative newbie to video capture (but not computers) and, after trying a few other capture solutions, I just purchased and installed an Intensity Pro PCI card in my Windows 8 Pro/圆4 computer.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |