Sound Devices 788T - Manual (Page 74)

• 24 – Frame rate of standard fi lm. Sometimes, it is also used in high-defi nition video production
when the video fi les go through a telecine process.
• 25 – The frame rate of PAL video. Most often used in video and fi lm production in Europe and
other PAL-based environments.
• 29.97 – The frame rate of NTSC color video. Most often used in the USA and other NTSC based
nations. Counts 0.1% slower than real time.
• 29.97DF – The frame rate of NTSC video modifi ed to match real time. Drop frame time code
is primarily used in the NTSC broadcast industry where it is often required that the time code
of fi nished program material refl ects actual real time duration. Drop frame is not common for
production time code.
• 30 – Originally, the standard frame rate for American black and white television. Today, it is
most often used to sync sound to fi lm where transfer to NTSC video is expected.
• 30DF – This is a rarely used non-standard frame rate. Do not use unless specifi cally requested
by production.
• 30+ – This setting is specifi c to Sound Devices recorders. Records at 48.048 sampling rate at 30
frames per second but stamps the fi le at 48 kHz, 30 frames per second.
Sound Devices Wave Agent Beta for Mac OS and Windows computers allows users to change the Frame
Per Second Stamp of any fi le. This is useful when the wrong Frame Rate was selected at the time of re-
cording.
See Wave Agent Beta for more details.
F Sampling Rate Modes
48.048k and 48.048kF
The 48.048kF mode (F stands for fake, faux, Fostex—take your pick) is a specifi c compatibility mode
for use with the Fostex DV40 software (1.74 and previous), Avid, Final Cut Pro, and other post-pro-
duction environments that do not recognize audio fi les written at 48.048 kHz. In this mode fi les are
recorded at a 48.048 kHz sampling rate but are stamped at 48 kHz. When played, they will play back
0.1% slower than real time.
One use for the 48.048kF mode is to force a 0.1% speed reduction (pull down) of audio to match
MOS-telecined fi lm (24 fps-to-NTSC) in non-linear edit systems, such as Avid or Final Cut Pro. Since
the fi le is stamped as a 48 kHz fi le, the edit system will play it back at 48 kHz and not at 48.048 kHz.
This “audio pull down” will match the transferred picture without the need for an intermediate step
through other software to create the pull down.
The time code frame rate (actual recording rate) is forced to 30 ND in 48.048kF mode. The LCD dis-
play will show 30 ND during recording. No other frame rate is available in 48.048kF mode.
the file is recorded at 48.048 k, 30 ND
788T/788T-SSD User Guide and Technical Information
66
v. 3.02 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Sync
hronization and T
imecode
6