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Weird and annoying Transmit playback bug with empty “gaps” in timeline
I had a problem yesterday in PPCC (Mac OS X) where the last frame of a clip that was fading to black would stutter and freeze on my external SDI/HDMI output for a moment before it actually went black.
After much hair pulling, I finally determined that the cause of this problem was due to the fact that the clip was cross dissolving into an empty timeline gap, rather than actually fading into a Black Video slug.
Further testing revealed that the cross dissolve has nothing to do with the problem. I discovered that playing over an empty timeline gap in any circumstance will cause the external Transmit playback (in my case, through a Decklink 4K Extreme card) to completely drop out.
This seems to be a Transmit issue, because the timeline plays and displays fine in Premiere’s desktop windows.
Anyone else seen this issue?
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2 Replies
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[Mel Matsuoka] “I discovered that playing over an empty timeline gap in any circumstance will cause the external Transmit playback (in my case, through a Decklink 4K Extreme card) to completely drop out.”
Hi Mel,
A few questions. By drop out do you mean your external monitor receives no signal? Does this happen with both SDI and HDMI? What Mac OS are you running? Do you have a GPU?
I haven’t seen this myself. But I will take a look Monday to see if I can reproduce this issue.
Best,
Peter Garaway
Adobe
Premiere Pro -
[Peter Garaway] “Hi Mel,
A few questions. By drop out do you mean your external monitor receives no signal? Does this happen with both SDI and HDMI? What Mac OS are you running? Do you have a GPU? “
Hi Peter,
Yes…my external monitor (Panasonic TH-58PF12UK ProPlasma) will drop out and actually display its “NO SIGNAL” on-screen message when this happens, as if I had actually pulled the HDMI cable out of the port.
I dont have an SDI input card for this display, so I’m feeding it via HDMI directly from the Decklink 4K Extreme card.
I’m not sure why I’m noticing this all of a sudden, but I’m now wondering if it has something to do with the fact that I just recently installed the Decklink 4K Extreme Card, to replace the older Decklink 3D Extreme card I was previously using. I was using the older card for over 2 years, but only noticed this “issue” only recently, after the new card was installed. I uninstalled the old Decklink driver and reinstalled the 4K Extreme Decklink driver when I upgraded the card. Other than that, nothing else has changed with my system, hardware or OS wise.
I’m on a 2010 8 Core MacPro with 64GB system RAM, running 10.8.4. My display GPU is a 2.5GB GTX570 (from MacVidCards), and I have an external Cyclone 2707 PCIe chassis which houses an additional 2.5GB GTX570 and REDRocket card.
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