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FCP doesn’t support 24 bit sound !!!!!
Hi,
Recently I faced a strange problem. I am editing a feature film http://www.3xthefilm.in
where my sound designer mastered the audio in both 16bit and 24bit in Nuendo.
But when I am importing the audio, the 24bit is going outsync !!!
The waveforms for the 16 and 24bit are identical on the timeline, but the 24bit audio is playing outsync !!!
Any suggestions ?
Raj
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5 Replies
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I’ve used 24-bit audio coming from a Sound devices recorder. FCP supported it. And I managed to have an entire 2 and half hour feature film in sync even with 6 audio tracks at places.
So FCP does support 24 bit audio.
Neil Sadwelkar
FCP Editor, Mumbai, India.
Completely PAL. -
Hi neil,
1. The film was shot on JVC HDV at24fps…and its at 23.98fps on the timeline…
2. The DAT sound was recorded at 24fps.
3. The audio was mixed on this DAW/software called SOUNDSCAPE.
4.The 16bit is working fine, but not the 24bit. Although the waveforms are identical on the timeline..the 24bit is still going outsync.
5. The audio was .wav on a dvd from SOUNDSCAPE, I have copied the audio on the mac.
Any Suggestions ?
Rajarshi
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1 – FCP supports 24bit sound, that’s all we use for our ProTools broadcast mixes.
[Rajarshi Basu] “1. The film was shot on JVC HDV at24fps…and its at 23.98fps on the timeline…
2. The DAT sound was recorded at 24fps. “
Those are two different frame rates if the DAT truly recorded in 24 with the video being recorded in 23.98. Could be the source of your out of sync audio.
Walter Biscardi, Jr.
Biscardi Creative Media
HD and SD Production for Broadcast and Independent Productions.STOP STARING AND START GRADING WITH APPLE COLOR Apple Color Training DVD available now!
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You know, I think Walter is right.
Rajarshi, there is such a thing as 23.98 fps. We in the PAL world use 25 fps for TV and 24fps for our film. So we are about as unaware of 23.98 as people in the NTSC world are about ‘true 24fps’.
One place I’ve encountered this is when the new Avid MC Mojo exports Quicktime ‘Same as Source’ from a 24 fps timeline in a 24 fps ‘film matchback’ project edited in PAL.
Avid exports a 24fps timeline as a 23.98 fps Quicktime. And that doesn’t sync with any sound we get from the sound house. So we export these movies as DV-PAL, conform them to 25, and then back to 24. That makes them 24fps.
You could try that. Export your timeline as a QT movie. Conform that to 25fps in CinemaTools and then back to 24 in CinemaTools again. Now check if that syncs with the sound you have.
Neil Sadwelkar
FCP Editor, Mumbai, India.
Completely PAL. -
Walter and Neil,
Thanks for your suggestion, but that still doesn’t solve my problem why the 16bit audio syncs and the 24bit doesn’t !! Very strange…
Another thing, when I give print to tape for a 2 hour DV PAL sequence…it shows out of memory while rendering…although I have tons of Gbs free in all my drives…
Any suggestions ?
Rajarshi
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