JVC HD monitor latency

[Walter Biscardi]

That monitor may require an offset like our Panasonic Pro Plasmas.

In 720p I leave the Playback Offset at 0. In 1080i, I have to change the offset to 2.

So if you have a two frame lag, change that offset.

Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.

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[Gordon Gurley]

Hmm, but that seems a little scary. If I offset to match my monitor, my audio will be out of sync when it hits my deck. I’d hate to have to switch it every time I do a layoff. Is there a way to set up different offsets for each output of the Kona?

[David Roth weiss]

[Gordon Gurley] “I offset to match my monitor, my audio will be out of sync when it hits my deck.”

There’s nothing really changing, just the apparent relation between video and audio to correct for the monitor latency. Its not really making a shift between the two as in actually slipping audio and video.

David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los Angeles

POST-PRODUCTION WITHOUT THE USUAL INSANITY

[Gordon Gurley]

OK wait a minute, how will the offset (i’m assuming your talking the playback offset in FCP) make my Kona monitor match my Kona audio? It has no effect.

[Walter Biscardi]

[Gordon Gurley] “OK wait a minute, how will the offset (i’m assuming your talking the playback offset in FCP) make my Kona monitor match my Kona audio? It has no effect.”

The offset puts a slight delay in the way the video is received by the monitor so it puts your audio and video back in sync for viewing purposes.

Record to tape is not affected at all.

Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.

All Things Apple Podcast! https://cowcast.creativecow.net/all_things_apple/index.html

Read my blog! https://blogs.creativecow.net/WalterBiscardi

[Gordon Gurley]

I’m missing something here. FCP Playback offset only affects the desktop sync. It doesn’t seem to do anything to Kona output (thank god). What offset delays the audio from Kona to match a slow monitor?

Please put me straight if I’m missing something here.

[Walter Biscardi]

[Gordon Gurley] “FCP Playback offset only affects the desktop sync. It doesn’t seem to do anything to Kona output (thank god). What offset delays the audio from Kona to match a slow monitor?”

It affects the audio sync to picture. In your case, the JVC monitor sounds like it requires 1 or 2 frames to display the image correctly, just like my Panasonic Plasma requires 2 frames to correctly display 1080i material. So by adjusting the playback offset, you put your external display in sync with audio.

Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Broadcast and independent productions.

All Things Apple Podcast! https://cowcast.creativecow.net/all_things_apple/index.html

Read my blog! https://blogs.creativecow.net/WalterBiscardi

[David Roth weiss]

Gordon,

Here’s the deal…

The Frame Offset setting in the System Settings–Playback Control doesn’t really change sync between audio and video, it just changes “apparent” relationship bewteen the two when monitoring through FCP both on the FCP desktop and through the Kona card. Unfortunately, some monitors require a setting that is not perfect for for both. In that situation you must chose which is more important to you, perfect sync on your client monitor or perfect sync on your FCP desktop. Does this make sense???

David

David Roth Weiss
Director/Editor
David Weiss Productions, Inc.
Los Angeles

POST-PRODUCTION WITHOUT THE USUAL INSANITY

[Gordon Gurley]

Yes, thank you.

[Bob Zelin]

Hi Gordon –
the 24″ JVC is a great monitor. All the LCD’s and Plasma’s have delay issues like you are seeing. The people that say “I don’t have any problems” can’t see a 1-2 frame delay error. CRT’s never had propogation delay issues.

bob Zelin