High-end video capture cards

[pipefan413]

No, I meant recording normally the first time. And then just running that recorded stuff through one of those devices afterwards. It will only use up an extra output, not an extra input. Latency is auto-corrected in DAWs like Cubase to my knowledge, so that wouldn't be an issue. In either case it would be a fixed delay and incredibly easy to adjust, whereas a whole second capture from an analogue source might very well have changes in speed over the entire duration leading to a non-constant desync.

OK no you've lost me hahah. Might be because it's nearly 1am.

I am intending to record the digital output from the player over TOSLINK to sound card's daughter card first, which I'll be doing simultaneously with the video for sync purposes. Then, separately, I'd run that recorded (hopefully bit perfect) digital track out of the sound card via RCA, to the stereo inputs of either the Yamaha or Dolby hardware decoder, then back to either the input of the sound card (for the Yamaha, RCA) or the input of a USB audio interface (XLR-TRS, for the Dolby SDU4). I can't currently capture all 4 output channels simultaneously in either case, so I'd need to capture 2 at a time (probably L+R then C+S). Or as I put it in the original post...

I might actually be best to just run the bit perfect caps back through after recording them, so that the RCA sound card output is sent to the RCA/XLR Lt & Rt inputs of the hardware decoder being used at the time and then the RCA out of the Yamaha is sent back to the RCA in of the sound card's daughter card (which is all shielded and gold plated etc.) or the XLR out of the Dolby is sent along XLR-TRS balanced cables to an audio interface, depending on which hardware I'm using to de-matrix.

What exactly are you suggesting I do instead? Or are you saying that I should do what I just said?

In terms of repeating captures from an analogue source causing some sync drift, well, this is something I'm concerned about and have already been thinking about a lot. That being said, the *source* is most likely going to be digital unless there's some significant reason that the analogue tracks end up being better (dynamically or whatever); it's just that to capture the 4 channels, I'm probably going to need to record 2 channels at a time.

Buuuut I think all of this is getting a little bit off topic for this particular thread. It might be best if we move over here if we continue this chat (which I'd like to, fwiw).