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Search took 0.00 seconds. Search: Posts Made By: Novgorod
Forum: Capture, Record, Transfer 08-17-2023, 02:06 PM
Replies: 102
Views: 7,899
Posted By Novgorod
Oh, I wasn't caught up on all the abbreviations...

Oh, I wasn't caught up on all the abbreviations ;) .. Dropout handling depends entirely on the field start and line start detection algorithm, so that's (again) up to you since different approaches...
Forum: Capture, Record, Transfer 08-17-2023, 09:40 AM
Replies: 102
Views: 7,899
Posted By Novgorod
Yeah, the camcorder is doing a pretty decent job...

Yeah, the camcorder is doing a pretty decent job at decoding, so the goal (for me) wasn't to make the picture substantially better (that's limited by what's on the tape anyway), but rather to have...
Forum: Capture, Record, Transfer 08-17-2023, 05:21 AM
Replies: 102
Views: 7,899
Posted By Novgorod
What do you mean by DOC? The 8mm tape spec (IEC...

What do you mean by DOC? The 8mm tape spec (IEC 843-X)? It's more of a guideline and the manufacturers don't seem to use the exact filter specifications, at least I have to tune the "spec" values...
Forum: Capture, Record, Transfer 08-17-2023, 01:42 AM
Replies: 102
Views: 7,899
Posted By Novgorod
Do you mean parameter tunability or "good...

Do you mean parameter tunability or "good results"? I can't speak for the results because they're not mine (and my own V8/Hi8 stuff is not finished yet) and they need to be compared with a...
Forum: Capture, Record, Transfer 08-16-2023, 01:31 PM
Replies: 102
Views: 7,899
Posted By Novgorod
Typically it's tuning a bunch of filters and...

Typically it's tuning a bunch of filters and (optionally) software TBC parameters. VHS-decode does a lot (if not most) of it automatically following the spec which works more or less well depending...
Forum: Capture, Record, Transfer 08-15-2023, 05:30 AM
Replies: 102
Views: 7,899
Posted By Novgorod
I don't think the TBC memory is usually...

I don't think the TBC memory is usually accessible unless the processing chip clocks out the data for debug reasons. So it may work on some models with a fast enough logic analyzer and wouldn't be...
Forum: Capture, Record, Transfer 08-15-2023, 12:50 AM
Replies: 102
Views: 7,899
Posted By Novgorod
Funny you mention it - SDRs have been doing that...

Funny you mention it - SDRs have been doing that since their inception :congrats: ..

You're also comparing very different signal types and applications. AM/FM radio is extremely narrow-band and...
Forum: Capture, Record, Transfer 08-14-2023, 11:13 AM
Replies: 102
Views: 7,899
Posted By Novgorod
I'm not pretending to be an audio codec expert,...

I'm not pretending to be an audio codec expert, it's just that from all I've read about it, Opus seemed to be the "best" in terms of "quality per bitrate" and latency :) .. But I really have no idea...
Forum: Capture, Record, Transfer 08-14-2023, 10:38 AM
Replies: 102
Views: 7,899
Posted By Novgorod
I agree that it's plenty sufficient for SD RGB...

I agree that it's plenty sufficient for SD RGB (or YUV) video, but I meant trying to put a raw RF waveform through any type of (lossy) image or video compressor. Technically any waveform signal can...
Forum: Capture, Record, Transfer 08-14-2023, 04:16 AM
Replies: 102
Views: 7,899
Posted By Novgorod
You mean digitize the raw RF signal with a DVHS...

You mean digitize the raw RF signal with a DVHS recorder? I like the outside-the-box thinking but it will result in a big mess (or, more realistically, in an empty recording) because the DVHS...
Forum: Capture, Record, Transfer 08-09-2023, 02:02 PM
Replies: 102
Views: 7,899
Posted By Novgorod
Are you sure they digitize the RF directly? I...

Are you sure they digitize the RF directly? I thought the processing is analog at least until after the demodulation step and probably also after de-emphasis (all inside a chip but still analog) and...
Forum: Capture, Record, Transfer 08-09-2023, 04:41 AM
Replies: 102
Views: 7,899
Posted By Novgorod
That's a misconception and the only reason to...

That's a misconception and the only reason to bother with RF in the first place. Both methods (traditional and RF capture) start with an identical signal, which is the RF picked up by the read head....
Forum: Capture, Record, Transfer 08-05-2023, 07:05 AM
Replies: 102
Views: 7,899
Posted By Novgorod
That's absolutely a valid concern, that's why I...

That's absolutely a valid concern, that's why I called it a speculation to do it (somewhat!) "blind". In order to perfectly verify your RF captures, you need to perfectly decode them. If that would...
Forum: Capture, Record, Transfer 08-04-2023, 03:29 PM
Replies: 102
Views: 7,899
Posted By Novgorod
I think we're getting to the core of the issue,...

I think we're getting to the core of the issue, so I'll try to keep it brief :) ..



But what's the mission? If it's getting a better image with software RF decoding under all circumstances for...
Forum: Capture, Record, Transfer 08-03-2023, 11:09 AM
Replies: 102
Views: 7,899
Posted By Novgorod
Thanks for the detailed reply! :congrats: I'm...

Thanks for the detailed reply! :congrats:
I'm pretty much an outsider (to both sides), but I'm intrigued by the academical value of the RF capture and software decode concept because it enables the...
Forum: Capture, Record, Transfer 08-02-2023, 09:43 AM
Replies: 102
Views: 7,899
Posted By Novgorod
Morning! I've been a lurker and don't want to add...

Morning! I've been a lurker and don't want to add to the drama, I'm just intrigued by this statement:



From a technical point of view, how does tape degradation affect the signal? If it's...
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