evilronin said:
Awesome. I didn’t think you could do it digitally. I’ll do more research. I’m trying to pick up a rf demod from eBay. Nostalgia is going cost me. Can you give me any direct links on the process? No worries if not, I’ll dig around myself. Thanks.I haven’t done it myself, but you basically need a sound card and recording set-up that can capture audio bit-perfect. That can actually be more of a pain than it sounds; a lot of cards and software re-sample stuff.
- Here’s instructions on how to ensure that on Creative X-Fi Cards: https://app.box.com/s/6135gvxl13utjo0dj9n8
- You then record straight from the audio out (should sound like garbage, because it’s Dolby digital data before decoding). And save your recording to a wav file without any adjustments.
- Then you bsconvert to interpret the encapsulated AC3 stream inside the wav file.
http://www.ac3filter.net/wiki/AC3Filter_tools#bsconvert- (bsconvert should work for DTS and Dolby Digital. DTS can also use “DTS parser”:http://originaltrilogy.com/topic/SUCCESS-Bit-Perfect-Audio-Capture/id/15988)
- You can then use eac3to or a similar tool to edit the AC3 to sync it to the new video while avoiding transcoding:
https://forum.fanres.com/thread-1587.html
(You can also edit the wav file before converting it with bsconvert.)That’s just my basic understanding. If you have any questions, there’s many members here and on fanres that will be happy to help if you make a thread.
I never thanked you for the info. Update (whether you care or not, I guess), used the x-fi titanium, capture was straightforward, (sigh) some issues with bsconvert and eac3to ate a lot of the dynamic range I was hoping to retain. Had to play with sampling rates a bit and recapture a few times to overcome this. Long story short, now I’m running into some major drifting issues (sync), I have some speculation as to the cause, but nothing for sure, major suspect is the difference in source video versus HD format, which I didn’t think would have any bearing since is strictly raw audio not beholding to frame rates as such, but I could be wrong. Anyway, that’s where I’m at. Thanks for the info, it saved me some time with research. Cheers.