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Second monitor preview, interlacing
I just got CS5 Production Premium and an EVGA GTX 465, which is basically a GTX470 with less CUDA cores (352 instead of 448). I added the card to the list in the Premiere CS5 txt file (the so called hack) and everything seems to work perfect except for one thing. When I play back interlaced footage that I shot with either of my two AVCHD cameras (Canon HF100 and Panasonic AG-HMC40), the footage in the TV set (which is setup as my second monitor) will play with the fields in the right order but after a few seconds it will start playing as if it were progressive, or as if the fields were in the wrong order. Then, eventually, it will go back to play the fields in the right order, and then the wrong order, and go back and forth like that. It switches every ten or twenty seconds. This happens both when the footage is played back in the source window and in the timeline.
Thanks to the GPU acceleration, it plays smoothly always even with added effects and even with different tracks at different opacity levels (I tried three tracks, one at 25%, another at 50% and the other at 100% and it played without skipping a frame), but I don’t understand why it doesn’t always send the right field order. I wonder if it has anything to do with the cable that goes to the TV set, since it’s DVI on the end that I connect to the video card, and HDMI on the other end. Regardless of that, I purchased the cable from Monoprice and it’s a very thick, well shielded cable. The card comes with a mini HDMI output, but the cable that comes with it is not long enough to reach the TV. Still, I’m not sure that it would make a difference.
Is this happening to any of you? Could this be a problem with the card itself, with my footage, or with Premiere?
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8 Replies
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Very difficult to diagnose the problem if you are using unsupported hardware. However, I recommend using a larger single monitor rather than 2 smaller monitors with Premiere Pro. With all GPU intensive applications, you are stealing editing system resources to display that second monitor.
See how the system works with a single monitor. I bet you’ll have more predictable performance.
Kevin Monahan
Sr. Content and Community Lead
Adobe After Effects
Adobe Premiere Pro
Adobe Systems, Inc.
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Kevin, while the GTX465 is not on the supported list, it’s probably just because they haven’t tested it thoroughly yet, but it’s a very powerful card that I’m sure will be on the supported list soon just like the GTX470 is now.
Regardless of that, I don’t see the point of editing with just one monitor when you need a full screen monitor to preview the video with the right colors and levels. The main monitor won’t give you that.
Sebastian R. Alvarez
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[Sebastian Alvarez] “The card comes with a mini HDMI output, but the cable that comes with it is not long enough to reach the TV. Still, I’m not sure that it would make a difference”
You can try to extend your mini HDMI cable by using a HDMI Female to Female adapter and another short HDMI cable, I don’t know if that would cure your problem but sometimes DVI to HDMI can cause problems, also since the problem is cyclic it possibly could be a memory problem either in the computer or on the video card, in the computer you could run a memory routine over night to check the memory, but for the card the best way is substitution. -
[Brian Louis] “You can try to extend your mini HDMI cable by using a HDMI Female to Female adapter and another short HDMI cable, I don’t know if that would cure your problem but sometimes DVI to HDMI can cause problems”
Thanks, I already got the female to female adapter and the result is the same as with the DVI to HDMI configuration.
Sebastian R. Alvarez
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I think I understand your problem now. You want full screen playback of the timeline on the TV monitor, right? Again, you’re reducing Premiere Pro’s performance by attempting to run the second monitor the way you wish to. I would look into getting a video capture card that is especially made for playout of the timeline.
The Blackmagic Intensity at $199 is the most affordable option but you can also look into offerings by Matrox, AJA and Bluefish444.
Read more about the issue here: https://www.adobe.com/products/premiere/capturecard_partners/
Video display cards are not made for timeline playback, video capture cards are. This is a fact of life for any NLE including Avid, FCP and Premiere Pro.
Kevin Monahan
Sr. Content and Community Lead
Adobe After Effects
Adobe Premiere Pro
Adobe Systems, Inc.
Follow Me on Twitter! -
[Kevin Monahan] “I would look into getting a video capture card that is especially made for playout of the timeline.
The Blackmagic Intensity at $199 is the most affordable option”
Thanks, I was thinking about getting the Intensity Pro. My concern is if Mercury playback GPU acceleration will still be available if I output the timeline through the Int. Pro.
Sebastian R. Alvarez
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I use an Nvidia Quadro fx3800 and run hdmi to a second lcd monitor which displays Premieres timeline/preview perfectly…this is with the mercury playback engine enabled also….so you get a 1920 x 1080 output of your timeline….its expensive but works beautifully:)
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Great you got that to work Steve. I still maintain that you are affecting performance by running a second monitor for playout but if is OK for your workflow then good on ya!
Kevin Monahan
Sr. Content and Community Lead
Adobe After Effects
Adobe Premiere Pro
Adobe Systems, Inc.
Follow Me on Twitter!
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