Frame Sync and Format Conversion

The frame synchronizer / format converter (FSFC) and input i-to-p converters that can be used to convert video signals as well as correct mistimed, or drifting, video input signal. The frame synchronizers cannot completely correct badly formatted video, mistimed switches, signal drops, or similar issues. Output format converters are only available on outputs 5-14.

The CUF-ADD-​I/OPLUS option provides 24 FSFC in HD (7 in UHDTV1).

Each FSFC channel maintains a separate setting for different video formats. This lets you change between video formats without losing FSFC channel configurations.

Keep the following in mind:

Keep the following in mind when working with Frame Synchronizers and Format Converters:

  • If a video format not compatible with the currently defined conversion is used, the video image is frozen with the last successfully processed image frame.
  • FSFCs create a one-frame delay in the video output of the switcher for the video signal being converted.
  • FSFCs strip embedded audio data from the video signal unless an SRC mode is used (HD SRC 4 Key or HD SRC 6 Key). Ensure that no FSFC channels are assigned to any input, outputs, or bus you are using with external audio mode.
  • The SD or HD output format converters are only available on output BNCs 5 to 14.
  • The FSFCs used in the switcher conform to the SMPTE ST 125:2013 standard. Some older equipment may not fully conform to the current standards and can send out-of-spec video to the switcher which can have unexpected results. Ensure that video coming into the switcher conforms to current standards, especially with regard to 480i video signals with variable blanking sizes.
  • An FSFC is required for Quad-Link 3Gb/s UHD-​2SI inputs. You must assign an FSFC to the first input of the quad-link 3Gb/s UHD-​2SI or UHD-​QSD inputs.