"Video to Film Rate Conversion"
WHAT IS IT?
When standard TVs are filmed at 24 frames per second (24fps), the standard film
rate, normal CRT TVs or Monitors will either flicker or show horizontal bars due
to the difference between the scan rates of the TV and film camera. This can only
be totally eliminated by synchronising the video image to the film rate. At the
same time the video image colour temperature may need correcting to 3200K to match
stage lighting. The ACE24 can also be used for simple colour correction of any world
video standard without conversion if required for TVs or monitors which do not show
flicker. However if you only use displays with no inherent flicker and only need
colour correction then the Advanced Convertor Enhancer
is ideal and the ONLY unit to combine Full Standards Conversion with all of our
usual Colour Correction features.
WHERE DOES THE "ACE24" FIT IN?
The ACE24 fits quite simply between your video source and the display. The source
can be in any world video standard. The display can be any which will cope with a
24fps vertical scan rate - the ACE24 can deliver output in any world colour standard
at 24fps.
The film camera is then synchronised to the 24fps video output using standard equipment.
If multiple video sources are used then any number of ACE24s can be synchronised
together using their 24Hz Sync output and Sync input connections. Full colour
correction is available plus an unusually wide range of other useful features.
For more details please see the ACE24 Features Page or
download the ACE24 User Manual from our Manuals Page.
Simple isn't it!
INPUT VIDEO STANDARDS ACCEPTED
Please note the ACE24 Convertor automatically senses the input standards and
you only need to set the output colour standard.
| Input Format | Version | Fields | Colour |
| PAL | BDGHIN (e.g. UK etc.) | 50Hz | 4.43MHz |
| Pseudo PAL | 60Hz | 4.43MHz |
| M | 60Hz | 3.58MHz |
| Combination-N | 50Hz | 3.58MHz |
| NTSC | M (e.g. USA etc.) | 60Hz | 3.58MHz |
| N | 50Hz | 3.58MHz |
| - | 50Hz | 4.43MHz |
| - | 60Hz | 4.43MHz |
| SECAM | BDGKL | 50Hz | 4MHz FM |
OUTPUT VIDEO STANDARDS PROVIDED
Video Output can either match the video input for simple colour correction
at 525/60, 625/50, PAL/NTSC/SECAM or provide any of the following combinations at
625 line 48 fields per second.
NOTE: Most modern TVs (but not all) will accept 48 Hz field rate without
adjustment and many older older TVs can cope if their vertical hold is adjusted.
However we cannot guarantee than any particular model will work with 625/48 as line
and field times are 4% longer than 625/50.
| Output Format | Version (ALL 625/48) | Fields | Colour |
| PAL | Slow PAL 4.43 - Europe | 48Hz | 4.43MHz |
| Slow PAL 3.58 | 48Hz | 3.58MHz |
| NTSC | Slow NTSC 3.58 - USA | 48Hz | 3.58MHz |
| Slow NTSC 4.43 | 48Hz | 4.43MHz |
| SECAM | Slow SECAM | 48Hz | 4MHz FM |
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