Peter Gruden
Forum Replies Created
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The fact that only the first TC frame is exported – if that’s the case – is nothing to worry about. All professional systems use black burst and word clock generators and once the first timecode address is received, the slave machine usually only follows the generator from that moment on. If analog tape machines are used as LTC source, that’s another story.
I have done the same thing as you are trying to do years ago with Matrox Digisuite/Incite and Nuendo using 9pin control. When working with audio, Nuendo was 9 pin master and serial TC clave, when working with video, Nuendo would just follow the LTC from one of the Incite’s audio tracks. Working with audio, video would follow, and vice versa.
In a simple setup, FCP would send LTC from one of the audio tracks to Logic (MTP). Both of them must be synced to the same sync source. If Midi TP has video sync input, just hook an composite signal from FCP into it. Also, when you record timecode as an audio signal, the timecode source must be synced to the same sync source.
Peter
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I’m using Decklink SP with Nuendo and it works fine (with UAD). As far as I could see on IBC hd jpeg does not demand so much power from cpu.
However, you are right, it is probably not a good idea to play HD video using the audio computer with large projects, so I’ll keep the Decklink SP for smaller SD projects and put an Aja LHe into Mac Pro with Virtual VTR for film work.
Regards,
Peter -
I did the test with two sources, Beta SP and DAC10 DV to component video converter. The result is the same on both. When I adjust gain to maximum the whites are still noticeable lower compared to the source.
Peter
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Perhaps you could use an industrial DVD player with touch screen interface over RS232(like Pioneer 7400) connected to a touch screen.
Peter
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I was wandering that too, but with a guy from BM staff we looked at computer properties and all we saw was 2gHz, no dual cpu or dual core. It is still possible that display was wrong and it was something else, but even with Core 2 the result would be impressive.
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Whatever that means, HD Studio playing 1920×1080 jpeg video (6.3 mb/sec) on a very ordinary P4 2Ghz machine was loading the processor by only 15-20% on the BM stand at IBC.
Peter
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Thanks for clarification about HDMI to DVI conversion. I guess nobody had time at IBC to dig a bit deeper in the subject. I’m aware that HD link can output DVI or HDMI, but I would not want to give up to the HDMI input capability on HD Studio.
Your statement about 720/50p:
[Sean ONeil] “Will intensity capture 1080p?”
Yes, the specs page for Intensity lists the following supported formats: 1080p24, 1080p25, 1080i50, 1080i59.94, 720p30, 720p59.94, 720p60.
https://forums.creativecow.net/cgi-bin/new_read_post.cgi?forumid=124&postid=862557&pview=t#head
Your explanation clarifies the subject, but it should also find it’s way into technical information relative to Mac and PC support on BM homepage.
regards,
Peter -
Luke,
The HD studio is a great little card and the HD jpeg codec is what we have been waiting for. I was watching 1920×1080 jpeg files playing out of HD studio and they were of a very high quality. The data rate was only 6.3 mb/sec.
On HD studio printed leaflet that I got at IBC it clearly says that it supports 720/50p, while on Blackmagic home page this format is missing. In the previous thread you are also saying that there is no 720/50p. I have been playing with Premiere presets on HD studio and 720/50p was there. A bit of IBC confusion I guess.
I mention this because EBU suggested 720/50p as the preferred present HD format for Europe, with 1080/50p as production format of choice and future standard. There was also an excellent presentation on EBU stand where different HD formats were compared side by side at different data rates, with progressive 720/50p being clearly superior over interlaced 1080/50i.
Regarding HDMI, it is great for 720p on LCD television sets, but for monitoring 1080 many will probably use an computer LCD monitor with DVI. I was asking about the possibility of HDMI to DVI conversion at Blackmagic and Convergent Designs and got different answers from different people.
I saw a small box in prototype stage on Geffen stand which would split HDMI source into DVI and analog audio (about 300$). I wonder if we can do it passively.Peter Gruden
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While it is not correct to plug Decklink directly into speakers, the mixer itself will not prevent switching noise. Except if you turn down the volume everytime before switching. For the same purpose, you could insert a simple switch on your audio cable to mute audio.
But this would not be an adequate way to deal with the problem.
If other Blackmagic cards don’t have the same problem ( Decklink SP works fine for me) then it must be multibridge fault, probably some kind of sync issue. Blackmagic should fix it. -
Sean,
I guess youre right about bad timing for G5.
My reason to go with Mac is really DVD Studio Pro, and Dvc Pro HD codec would be a bonus which is not available on PC. But it seems that reduced resolution and multigeneration loss negate the advantages of using Dvc Pro HD.
Are you getting better performance (effects, slomo and CC) with uncompressed than with Dvc Pro HD?
thanks for valuable information,
Peter