Applications : Film 24 to NTSC Sync
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Film 24 to NTSC Sync
Here are some settings for the most common Scenarios for Film 24 to NTSC Sync. Presets for all of these can be
found in
Settings > All Settings > Hardware > Formats & Sync.
Mix/Editing for TV shot in NTSC and 48 kHz and edited in sync with NTSC equipment:
• Set the Frame Rate to NTSC Drop
• Set the Video Format to NTSC
• Set the Sampling Rate to 48 kHz
• Set the Varispeed to Nominal
Result: FR = 29.97 SR = 48000 Video Input = 29.97 (Standard for TV, Audio at 48kHz in sync with 29.97 while Shoot-
ing, Post and Diffusion)
Mix/Editing for Film shot at 24 fps and 48kHz but edited in sync with NTSC equipment:
• Set the Frame Rate to Film (24 fps)
• Set the Video Format to NTSC
• Set the Sampling Rate to 48 kHz
• Set the Varispeed to Pull-Down
Result: FR = 23.98 SR = 47952 Video Input = 29.97 (Standard for Film, Audio at 48kHz in sync with Film 24fps for
Shooting and Diffusion, but at 47952 in sync with 29.97 for the Post with Film 24 running at 23.98)
Mix/Editing for Film shot at 24 but converted 3:2 to 30 frames and edited in sync with NTSC
equipment:
• Set the Frame Rate to SMPTE Non-Drop
• Set the Video Format to NTSC
• Set the Sampling Rate to 48 kHz
• Set the Varispeed to Pull-Down
Result: FR = 29.97 SR = 47952 Video Input = 29.97 (Standard for Film, Audio at 48kHz in sync with Film 24fps for
Shooting and Diffusion, but at 47952 in sync with 29.97 for the Post with Film converted to 30 running at 29.97)
Special case:
Mix/Editing for Film shot in High Def at 23.98 fps and 48kHz and edited in sync with HD NTSC
equipment like D5 or other:
• Set the Frame Rate to 23.98
• Set the Video Format to Trilevel 24/1.001
• Set the Sampling Rate to 48 kHz
• Set the Varispeed to Nominal
Result: FR = 23.98 SR = 48000 Video Input = 23.98 (For Film shot in HD 23.98, Audio at 48 kHz sync with Film 23.98
while Shooting and Post.
Caution: The Audio needs a Pull-Up to run in sync with the Film if printed a real Roll)
Checking AC3 encoded files in Pyramix
Two types of AC3 encoded files can be played back in Pyramix:
If the file was generated as an .ac3 file, then Pyramix will automatically decode it on the fly and playback 6 chan-
nels of audio.
If the file was generated as a .wav file, then Pyramix will consider the file as Wave and simply play two channels of
digital encoded AC3 to its (digital) outputs to feed an external decoder.
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