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May 17th, 2012, 09:16 PM
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#1 |
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Major Player
Join Date: Oct 2006
Location: Burbank CA
Posts: 466
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best audio format for secondary audio
Going to shoot a 1-1/2 hr show. Want to record a separate stand alone audio recording.
video system: Sony Ex-1r If I shoot 1920 x 1080 60i, then the question becomes: Using the tascam HD-P2 recorder, I can only record uncompressed. I will choose 48k , 16 bit. Can I expect this footage to be in sync? I have recorded DV shows for this length of time with great results. Just not HD footage. |
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May 17th, 2012, 09:34 PM
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#2 |
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Trustee
Join Date: Aug 2007
Location: Portland, Oregon
Posts: 1,238
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Re: best audio format for secondary audio
No way in the universe ANY independent recorder will hold sync for 90 minutes.
Not clear why separate sound is important here? There are work-arounds if you MUST use double-system. |
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May 17th, 2012, 09:53 PM
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#3 |
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Major Player
Join Date: Oct 2006
Location: Burbank CA
Posts: 466
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Re: best audio format for secondary audio
well, I have done it in SD mode.
Anyway, I could output a downconverted signal and sync the Tascam with the video sync from this output. However, I'm not sure how the audio formats are going to jive |
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May 17th, 2012, 11:03 PM
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#4 | |
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Trustee
Join Date: Aug 2007
Location: Portland, Oregon
Posts: 1,238
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Re: best audio format for secondary audio
Quote:
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May 18th, 2012, 10:57 AM
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#5 |
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Inner Circle
Join Date: Aug 2008
Location: New York
Posts: 2,038
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Re: best audio format for secondary audio
The stars, planets and gods in Dave's world must have been perfectly aligned.
For 'long form' recording, a master sync/word clock source is necessary. Dave, why would you want anything other than uncompressed audio for acquisition? |
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May 18th, 2012, 01:31 PM
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#6 |
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Inner Circle
Join Date: Sep 2003
Location: Portland, Oregon
Posts: 3,420
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Re: best audio format for secondary audio
The Tascam HD-P2 is rather unique in that it includes a black burst / composite input that it will clock to on a continuous basis. In other words, excellent (timebase) sync to video is easy to achieve.
If you're able to get composite SD video out of your EX1 to the HD-P2 while shooting HD, you can expect good stability and syncability of your separate recording. In all such recordings, post sync is much easier to manage the better your camera and recorder audio content match. T'wouldn't hurt to test, of course. Just start the dual recording, clap, let it run an hour, then clap again. See how the clips look on the timeline, it should be perfect. 16-bit 48KHz or better yet 24-bit 48KHz uncompressed would be the formats of choice for the audio recording.
__________________
30 years of pro media production. Vegas user since 1.0. Webcaster since 1997. Freelancer since 2000. College instructor since 2001. |
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May 18th, 2012, 03:11 PM
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#7 |
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Regular Crew
Join Date: Nov 2007
Location: Brea, CA
Posts: 37
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Re: best audio format for secondary audio
I agree with Seth. Take composite from your camera for the HD-P2 to sync with, and record 48khz 24 bit for extra headroom. Clap at the beginning/end of the recording for sync marks that you can line up with the in-camera audio during post. I shoot 1080 24p HD on a Canon XH-A1 & HD-P2 like this and it works like a charm.
/BILLW |
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May 20th, 2012, 09:46 PM
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#8 |
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Major Player
Join Date: Oct 2006
Location: Burbank CA
Posts: 466
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Re: best audio format for secondary audio
yes I used "video sync" from the downconverted composite output of the EX-1r to the Tascam HD-P2. I had other issues however, posted in a separate post above. still trying to figure it out
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