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audio stuttering on playback, help!
Distressing audio problem in FCP 6. Video/audio appears to capture just fine, but on playback, often, but not every time, I get audio stuttering. It doesn’t appear to matter whether I’m playing in browser, timeline or print to tape mode, and it happens in a different place every time. Video looks normal.
Any ideas what would cause this, or how I can fix it?
Configuration:
MacBook Pro running OS X 10.5.6 with 2.53 GHz Intel Core 2 Duo processor, 4 GB memory, Final Cut 6. Source video is recorded on a Sony DNW-90 (SX) NTSC 16:9, then played out to capture from a Sony DNW-A220 (SX recorder), composite signal converted through a Canopus ADVC-110 converter with RS-422 device control.Settings:
Capture:
ADVC-110 using NTSC
29.97 frames per second
DV/DVCPRO – NTSC at Best quality
24 bits per pixel
640 by 480 (Anamorphic 16:9)
Using DV Audio for audio input
Input: first 2 channels
Format: 48,000 kHz 16-bit 2-chan
Speaker: off
Volume 100, Gain 0Sequence:
Frame Size: 640 x 480 pixels
Editing Timebase: 29.97 fps
Field Dominance: Lower (even)
Pixel Aspect Ratio: NTSC – CCIR 601 / DV
Anamorphic 16:9 : on
Video Processing: YUV allowed (8-bit)
White Point: WhiteCompressor: DV/DVCPRO – NTSC
Millions of Colors (24 bit)
No Data Rate Limit
No Keyframes Set
Quality 100Audio settings: 16-bit 48.000 kHz stereo
Device control Presets
Protocol: Sony RS-422
Time Source: LTC
Port: KeySerial1
Audio Device Control mapping (Ch1-8): 2
Channels: Frame Rate : 29.97
Use deck search mechanism
Pre-roll: 3 secs
Post-roll: 3 secs
Capture offset: 0.00 frames -
4 Replies
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Why 640×480? I live in a PAL area, but I don’t think that’s NTSC.
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Quite right, and I have changed it. Do you think that would affect the audio playback though?
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Yes I think so. Better use the captue/sequence presets that come with FCP.
Jaap
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OK, that has fixed the problem during playback, but I still have it in print to tape mode. Any ideas?
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