NTSC bars and tone?

mmreed wrote on 12/18/2003, 12:41 PM
Does anyone have a solid method of producing the NTSC bars and tone to insert at the start of a video? I am submitting a project for replication and the replication service wants 5 secs of black ... 5 secs of NTSC bars with tone, then 5 secs of black at the start.

Does anyone have a sound file of the specific tone and a bars image?

Comments

Chienworks wrote on 12/18/2003, 4:49 PM
These were generated in Vegas. You can dump then right on the timeline and stretch them out as long as you need them to be.

http://www.vegasusers.com/testbench/files/1khz-test-tone.wav
http://www.vegasusers.com/testbench/files/ntsc-colorbars.png
NaperRick wrote on 12/19/2003, 6:50 AM
I assume they told you the tone needed to be set at 0 db

Rick
Former user wrote on 12/19/2003, 8:05 AM
Are you sure they only want 5 seconds of bars and tone? You would have to move pretty fast to set that up at a dupe house.

Dave T2
mmreed wrote on 12/19/2003, 8:19 AM
my mistake... they need 30 seconds:

All sources must be edited to the following specifications to ensure proper encoding and avoid additional charges: 30 seconds black, 30 seconds of Bars and Tone, then 5 seconds of black before the start of your program. 5 seconds of black immediately following your program.

mmreed wrote on 12/19/2003, 8:19 AM
I was also wondering how they use this colored pattern and tone?

Do they align it with an inhouse pattern and tone to match up colors and audio variances?
NaperRick wrote on 12/19/2003, 11:35 AM
They will use a waveform monitor and vectorscope on your bars to adjust video levels and color timing. The tone is used to set audio level - they will assume your tone is at 0 db so it is important that you add the tone to your video it's level is at 0 db and the audio of your video show is peaking to 0 db.

Rick
Former user wrote on 12/19/2003, 11:39 AM
That sounds better. They need time to set it up to match their house standard.

Dave T2
Chienworks wrote on 12/19/2003, 1:43 PM
Interesting. The tone that Vegas puts out is 1Khz at -20dB. That's what is in the file i posted the link to above.