Economy recording of HDTV downconverted to 480i? - AVS Forum
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Old 03-19-2002, 05:43 PM - Thread Starter
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I'm new to HDTV (OTA for 6 weeks) and am hooked!

This weekend I had to spend some time with the family during part of the HD broadcast (Wash DC games) of the NCAA tournament. As you know, the programming on HDTV is often different than what is on SD from the same station, so there might be many times I want to record from my HD receiver (Hughes HIRD-E86).

Poor me - what I did was have the HD receiver downconvert to 480i and recorded one of the games on my VCR (std VHS). To my surprise, it recorded widescreen, but the picture quality of course was approximately what I would normally expect from a EP recording.

If I had recorded this material on a S-VHS VCR, what should I expect? Would the PQ be close to recording a SD broadcast on a standard VCR at SP? Is there an economical way to record and get approximately a 480i picture?

I've ordered a ReplayTV 4080 (shipped yesterday) so I don't know that much about it's capabilities yet. Will that record the downconverted (to 480i) HD programming and be decent quality?

What suggestions do you guys have?

Thanks from a real newbie,

Tim L
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Old 03-19-2002, 08:25 PM
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I have recently aquired a JVC 7800 S-VHS deck (for very cheap) and have used it to record HD channels via the s-video port of my DTC100. With SP mode using S-VHS media the recording is nearly identical to watching the s-video output live. It's certainly not HD but it's not too bad and it's in the correct aspect ratio. The Replay unit should give you similar quality if you use the highest quality setting. I have not yet tried EP mode. Good luck.

Jay
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Old 03-20-2002, 04:46 AM
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A S VHS recorder with time base correction will yield 95% of the origional broadcast. I use a JVC that is the second from the top of the line. It cost about $170.00. For 480I from the antenna or C band dish it yields acceptable immages on my 65 inch Toshiba.

Joby in Fredericksburg
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Old 03-20-2002, 09:16 AM
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I use a JVC S-VHS machine for recording HD programs throu S-Video (480i).

It's OK but has video noise and loss of color acuity as well as resolution.

I think it is the best current solution but hardly what I would like to be able to do.
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Old 03-20-2002, 08:04 PM
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I have all of: DV, SVHS, DVHS and D9. The only format that does
full justice to 480i is D9 (when you have resolved the signal all
the way to analog.) DV and DVHS (HM30000) are also pretty
good, but you need to watch out for motion/decoder artifacts
on the DVHS deck and not all DV decks have great NTSC decoders.

SVHS is a reasonable 3rd choice, but alot of the signal quality
is lost. For consumer use, and having a few extra bucks, my
choice would be DV. D9 is essentially perfect, but very
cumbersome to use for timeshifting.

John
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Old 03-20-2002, 09:53 PM - Thread Starter
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Quote:
Originally posted by jdyson
I have all of: DV, SVHS, DVHS and D9. The only format that does
full justice to 480i is D9 (when you have resolved the signal all
the way to analog.) DV and DVHS (HM30000) are also pretty
good, but you need to watch out for motion/decoder artifacts
on the DVHS deck and not all DV decks have great NTSC decoders.

SVHS is a reasonable 3rd choice, but alot of the signal quality
is lost. For consumer use, and having a few extra bucks, my
choice would be DV. D9 is essentially perfect, but very
cumbersome to use for timeshifting.

John
John,

Excuse my ignorance, but I haven't heard of D9 before. What is it?

You have a D-VHS? Is the only way to use one of those with Firewire? What are the different options for getting Firewire output?

Thanks,

Tim
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Old 03-21-2002, 09:56 AM
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Recordable DVD is also a great alternative for this form of archiving.
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Old 03-22-2002, 10:26 AM
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Do most STB's output 480i on the s-video out? I have a SA2000HD (TWC) and it will not output anything form the s-video when watching a hi-def channel. I wish it would since I still love my replay.
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Old 03-22-2002, 11:30 AM - Thread Starter
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Quote:
Originally posted by Ronald
Recordable DVD is also a great alternative for this form of archiving.
What do you recommend for recording DVD's?
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Old 03-22-2002, 01:45 PM
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I have had excellent results recording to a Sony Digital-8 Camara via it's S-Video jack and audio analog input from a DTC-100. I can then transfer/view on my HTPC by Firewire and use it for a good scaler. Results are very good. I can't see a better way to do it other than a stand alone DV deck.

Of course I have not jerry-rigged any way to do timer based recordings but maybe someday I'll give it a try.

The Idiot
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Old 03-23-2002, 07:14 AM
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tluxon,

I have been using the Panasonic E20s with a DTC-100 stb and the Panasonic stb. Of course neither stb outputs on the s-video if you are watching HDTV. Depending on the source, DVD recorded material will look as good as, if not better than, commercially produced DVDs.
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Old 03-23-2002, 10:14 AM
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if neither stb outputs on the s-video while you are watching HDTV, then I don't understand how you could record a down-ressed image of HDTV.
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Old 03-23-2002, 12:05 PM
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dkan24

Either the stb is outputting the 480i via composite or S-video or it is outputting the 1080i or 720p via VGA or component outs, but never both at the same time. (You cannot watch the HDTV signal and record it downrezzed at the same time.) Further, on a HD channel such as HBO-HD, the 480i output is still in the 16:9 aspect ratio and is recorded anamorphically by the recording device.
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