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Outputting 4 Channel Audio
Is there a way to output 4-channel discreet audio (for playback to a broadcast video deck)? I want output channels 1&2 to be stereo and channels 3&4 to be mono. But I can only seem to get it to mix down to 2-channel stereo.
Anybody???
Thanks
Tim Walton
KVIE Public TelevisionPS – We’re using a 2.0 Duo Core G5 running FCP 5.1 and outputting through a Kona II card
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16 Replies
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Outputting to what deck? With what capture card? What format?
Info…we need info.
Shane
Littlefrog Post
http://www.lfhd.net -
I’m just on my way out, but here is something to get you started.
https://forums.creativecow.net/cgi-bin/new_read_post.cgi?forumid=8&postid=930667
I’ll check back tomorrow to try to help more if I can.
-Russ
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[tristan004] “Is there a way to output 4-channel discreet audio (for playback to a broadcast video deck)? I want output channels 1&2 to be stereo and channels 3&4 to be mono.”
Sequence Settings > Audio Output > set this to four channel and set the channels the way you want them.
Then in the FCP timeline, assign the audio tracks to the four channels for output.
This is assuming the video deck in question can accept four channels discreet audio and you have an FCP system capable of outputting four channels of discreet audio.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”Read my blog! https://blogs.creativecow.net/WalterBiscardi
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Hi tristan004
to add to Walters post, also make sure that your device control preset is set to map 4 channels of audio.
This is especially important if you are outputting 4 discrete channels of audio via embedded SDI as the RS422 device control preset
will control your broadcast deck’s sdi audio inputs.Best Regards
Footagehead -
I’ll answer this for Tim. It’s either DVCPro 100 or DVCPro 50 to either a AJ-D950 or a AJ-HD1400 from an oem HDe AJA card
Jim Calahan
KVIE, Sacramento -
Hi Jim
these decks and the card you mention will handle SDI embedded audio
or 4 channels of AES EBU. With the information set down in these posts you should be
able to sucessfully output 4 discrete channels of audio in one of these formats.Best Regards
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If you have already created the sequence as a stereo sequence, then simply changing the mapping on the sequence settings will not work.
What you need to do is either create a new sequence with the new audio settings already set, or after changing the settings of the sequence go to the Audio Mixer and re-assign the tracks 3 & 4. You can do this by right clicking on the track buttons to the left of the mixer.Hope that helps.
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[footagehead] “This is especially important if you are outputting 4 discrete channels of audio via embedded SDI as the RS422 device control preset
will control your broadcast deck’s sdi audio inputs.”Never heard of that one before. RS-422 Control has nothing with do with audio mapping via SDI. RS-422 is just controlling the start / stop time of the deck, has nothing to with audio / video inputs.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”Read my blog! https://blogs.creativecow.net/WalterBiscardi
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[Jim Calahan] “I’ll answer this for Tim. It’s either DVCPro 100 or DVCPro 50 to either a AJ-D950 or a AJ-HD1400 from an oem HDe AJA card”
1400 handles 4 channel audio just fine, but it records DVCPro HD only. Just set up the audio as I described above and you’re good to go. I master broadcast shows to our 1400 all the time with a 4 channel mix.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”Read my blog! https://blogs.creativecow.net/WalterBiscardi
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i think it does, or rather i have assumed it does … when you tell the ETT window to do, for example, an audio only insert on channel 3&4, how does the deck receive this necessary control information if not through the rs422 control?
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