Re: Capture HD video directly from HDMI uncompressed

22 Feb 2007 9:04 PM

Smarty

Gene,

HDV does a pretty good job of it on a minDV tape, and 80 minute tapes for
HDV are on the market now. Not sure if you can pump HDMI video into an HDV
camcorder and have it record in HDV. If so, then capturing HD via the HDMI
port using the Blackmagic and then copying it to a miniDV with a camcorder
would be a sweet little archiving solution at relatively low cost. Nice to
see the Blackmagic has both HDMI IN and HDMI OUT ports. :-)

Smarty

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"Gene" <ge***@wildblue.net> wrote in message
news:cnnDh.9$Ar5.96351@news.sisna.com...
> You can get ~ 90+ minutes (~20GB) on a MiniDV camcorder tape:-)
> Wonder if that would be enough to make the movie
> look OK? It's probably a little better than a double
> sided DVD.
>
> $400 for a 1TB sounds like a fair price:
> http://www.reghardware.co.uk/2007/01/05/hitachi_unveils_first_1tb_hdd/
>
>
> Gene
>
>
>
>
>
> "Jan Panteltje" <pNaonStpealm***@yahoo.com> wrote in message
> news:erktje$h07$1@news.datemas.de...
>> On a sunny day (Thu, 22 Feb 2007 14:35:11 -0500) it happened "Smarty"
>> <nob***@nobody.com> wrote in
>> <IeWdnaWQ04rybUDYnZ2dnUVZ_qemn***@adelphia.com>:
>>
>>>Jan,
>>>
>>>What a refreshing and intelligent reply! I've done a bit of research on
>>>this
>>>specific topic, and it appears that "Port Multiplication" with SATA
>>>drives
>>>in a RAID is an available and more than adequate solution. The web link
>>>cited below shows simple to achieve 230 MB/sec performance and offers a
>>>solution up to around 265 MB/sec as well.
>>>
>>>
>>>http://www.macgurus.com/productpages/sata/PortMultiplicationGuide.php
>>>
>>>This will certainly fill disk drives quickly!!
>>>
>>>Given that cable boxes and satellite boxes are not generally providing
>>>HDCP
>>>over HDMI, this would appear to be an alternative method to directly
>>>capture
>>>cable and satellite HDTV at full resolution.
>>>
>>>Smarty
>>
>> Good info, thank you, good to know somebody already did all this..
>> Yes, it will take a lot of space:
>> at 200 MB / s for 90 minutes 90 x 60 x 200 = 1 080 000 MB say 1.1 Tera
>> Byte.
>> That is if you wanted to record a movie.
>> It would not be so good if you recorded from a settop box, or even from a
>> DVD player,
>> as the source would be mpeg2 or similar, and that is better recorded as
>> .ps or
>> transport stream, taking much less space.
>> But for directly from a HD camera it is the right stuff.
>> Then you need more space for editing, at least double the space, 10TB
>> would be nice.
>> Now let's extrapolate a bit:
>> In the 1980 ties we were at 10MB for a harddisk.
>> Now, say 20 years later, we are at 500 MB.
>> A factor 50 in 20 years.
>> So perhaps 10 years from now we have the 12 TB harddisks....
>> In 5 years from now the 6 TB, and that would be enough already.
>> Just to know where it will go :-)
>>
>>
>
>

22 Feb 2007 9:15 PM

Frank

On Thu, 22 Feb 2007 16:04:12 -0500, in 'rec.video.production',
in article <Re: Capture HD video directly from HDMI uncompressed>,

"Smarty" <nob***@nobody.com> wrote:

>Gene,
>
>HDV does a pretty good job of it on a minDV tape, and 80 minute tapes for
>HDV are on the market now.

Some of use wouldn't dream of using 80-minute tapes for anything. :)

>Not sure if you can pump HDMI video into an HDV
>camcorder and have it record in HDV.

No, you can't. As with the analog component video jacks on HDV and
AVCHD camcorders, the HDMI jacks on these products are also output
only. They do *not* accept an input signal, sorry.

>If so, then capturing HD via the HDMI
>port using the Blackmagic and then copying it to a miniDV with a camcorder
>would be a sweet little archiving solution at relatively low cost. Nice to
>see the Blackmagic has both HDMI IN and HDMI OUT ports. :-)

--
Frank, Independent Consultant, New York, NY
[Please remove 'nojunkmail.' from address to reply via e-mail.]
Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/

23 Feb 2007 1:48 AM

Smarty

Thanks Frank for the follow-up comments. A bit disappointing but not
surprising to find out that HDMI is an output only, and not supported for
input on the HDV camcorders.

I am now curious.....are the 80 minute miniDV tapes too thin, and /
or otherwise unreliable?

Smarty

"Frank" <fr***@nojunkmail.humanvalues.net> wrote in message
news:gl1st2hv1nvpv7f5k2eg23ue43sjo04qcf@4ax.com...
> On Thu, 22 Feb 2007 16:04:12 -0500, in 'rec.video.production',
> in article <Re: Capture HD video directly from HDMI uncompressed>,
> Some of use wouldn't dream of using 80-minute tapes for anything. :)
>
>>Not sure if you can pump HDMI video into an HDV
>>camcorder and have it record in HDV.
>
> No, you can't. As with the analog component video jacks on HDV and
> AVCHD camcorders, the HDMI jacks on these products are also output
> only. They do *not* accept an input signal, sorry.
>

\> Frank, Independent Consultant, New York, NY
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> [Please remove 'nojunkmail.' from address to reply via e-mail.]
> Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/

23 Feb 2007 6:44 AM

Frank

On Thu, 22 Feb 2007 20:48:50 -0500, in 'rec.video.desktop',
in article <Re: Capture HD video directly from HDMI uncompressed>,

"Smarty" <nob***@nobody.com> wrote:

>Thanks Frank for the follow-up comments.

You're quite welcome.

>A bit disappointing but not
>surprising to find out that HDMI is an output only,

They don't want consumers creating HDV content except by shooting
through the lens of an HDV camcorder.

>and not supported for input on the HDV camcorders.

Same situation with all of the current AVCHD camcorders. The HDMI jack
is output only.

>I am now curious.....are the 80 minute miniDV tapes too thin, and /
>or otherwise unreliable?

It's just a personal thing. I've never used long running tape and
never will. Even back in the days of open reel audio tape, I bought
2500-foot loads and never the 3600-foot loads. Of course, I used
mostly Ampex 456 which, as it turned out, had a shorter life than it
should have, but that's another story.

>Smarty

--
Frank, Independent Consultant, New York, NY
[Please remove 'nojunkmail.' from address to reply via e-mail.]
Read Frank's thoughts on HDV at http://www.humanvalues.net/hdv/