illegal broadcast levels and DVDs

[Shane Ross]

No.

Shane

Littlefrog Post
http://www.lfhd.net

[Michael Gissing]

I doubt that the white levels will cause buzzing as the signal is going in via composite or component. Maybe if the connection is RF?

If in doubt, chuck a broadcast safe over the whole show. It is likely that the mpeg compression will be better if whites are at 100 IRE as there is less range to deal with.

[Rafael Amador]

As Shane says, no. When you make aa MPG2 all the values that oversteping the legal levels are just cuted-off.
The Video-out of the DVD will be allways legal.
Rafael

[Walter Biscardi]

[sdlawson] ”
I’m creating a video that won’t be broadcast, only put on DVDs for a few people. Do I need to worry about buzzing from illegal broadcast levels if people watch the DVD on a CRT TV?”

Probably not, but it’s always good practice to bring your levels down to a reasonable level. If your whites are above 120, I would certainly bring them down. If you’re at 110, then I would not worry about it.

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

[Sean Oneil]

The buzzing is caused by VHF over-the-air signals. So like everyone else says, no.

Sean

[Bouke Vahl]

The answer is YES. You should worry, but not about ‘broadcast’
As walter stated, always check your levels.

The encoder expects minimum and maximum levels, so if you go over that, the levels will be clipped.
Watch the skies and see if detail in the sky goes missing after the encode, watch the blacks to see if there is still detail.

Now some (i think compressor too) encoders expect full RGB on input. In that case, you cannot go wrong unless your capture was ‘true’ 601 (well, i’m in PAL).

Most important (and then the ‘no’ camp is right), nothing will go horribly wrong, only the image might not be what you expect.

Do a quick and dirty encode, watch it and if you like it, you’re done. If not, you know where to start troubleshooting.

Bouke

http://www.videoToolShed.com
smart tools for video pro’s

[Sdlawson]

Thanks for all the responses, everyone!

[Rafael Amador]

The quetion of sdlawson was very clear:
Do I need to worry about buzzing from illegal broadcast levels if people watch the DVD on a CRT TV?
The answer is: NO. In the Video-out of a DVD player you will never find an ilegal signal.
Off-course if hi cares about how his film will looks, hi should care about the signal levels before the MPG2 compression.
Rafael