FS4 is a 4-channel 2K/HD/SD or 1-channel 4K/UltraHD frame synchronizer and up, down, cross-converter. AJA’s flagship frame synchronizer and converter offers incredible versatility and connectivity in a sleek 1RU frame for all your 4K/UltraHD and 2K/HD/SD conversion needs, with a wealth of digital and optional 12G-SDI Fiber LC and 12G-SDI BNC SFP connectivity. Offering a wide range of connection options for both video and audio, FS4 can do the work of four separate devices in 2K/HD/SD or combine all processors and channels together for maximum flexibility for 4K/UltraHD productivity.

FS4 offers two modes for comprehensive conversion and signal processing. Single Channel Mode provides a full suite of 4K/UltraHD processing and up, down, cross-conversion to and from 2K, HD, or SD. Four Channel Mode offers 4x 2K/HD/SD channels of simultaneous conversion and processing, all within an elegant 1RU chassis for multi-channel high density delivery.

AJA FS4 Features

Multi-channel Frame Synchronizer and Format Converter
Four independent 2K, HD, or SD video processors
One 4K, UltraHD, 2K, HD, or SD video processor
Up, down, cross-conversion
4x 3G-SDI in and 4x 3G-SDI out
12G-SDI (HD-BNC) I/O with optional SFPs
12G-SDI Fiber I/O with optional SFPs
Quadrant (Square Division) or 2SI (Two Sample Interleave) 4K/UltraHD input pixel mapping
1x 3G-SDI and 1x HDMI monitor outputs
16-channel embedded audio over SDI per port, 8-ch AES In and Out, 64-ch MADI Fiber and 64-ch MADI Coax I/O
Front panel controls
Easy to use web UI, configure and control from standard web browsers
Five year warranty

FS4 multi-channel frame synchronizer & format converter1

Modes of operation
- Four independent 2K, HD, or SD video processors
- One 4K, UltraHD, 2K, HD, or SD video processor
Video formats
- (4K) 4096 x 2160p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
- (4K) 4096 x 2160PsF 23.98, 24, 25, 29.97, 30
- (UltraHD) 3840 x 2160p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
- (UltraHD) 3840 x 2160PsF 23.98, 24, 25, 29.97, 30
- (2K) 2048 x 1080p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
- (HD) 1920 x 1080p 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
- (HD) 1920 x 1080PsF 23.98, 24, 25, 29.97, 30
- (HD) 1920 x 1080i 50, 59.94, 60
- (HD) 1280 x 720p 50, 59.94, 60
- (SD) 625i 50
- (SD) 525i 59.94
- YCbCr, 4:2:2, 10-bit
Video input digital
- 4x 3G-SDI inputs, 4x BNC
- 4x 3G-SDI inputs, 4x Fiber or HD-BNC (optional SFP modules)
- 12G/6G/3G/HD/SD, SMPTE-259/292/424/2081/2082
- Quadrant (Square Division) or 2SI (Two Sample Interleave) 4K/UltraHD input pixel mapping
- 8x 1 selector feeds video processor(s)
Video output digital
- 4x 3G-SDI outputs, 4x BNC
- 4x 3G-SDI outputs, 4x fiber or HD-BNC (optional SFP modules)
- 12G/6G/3G/HD/SD, SMPTE-259/292/424/2081/2082
- Quadrant (Square Division) or 2SI (Two Sample Interleave) 4K/UltraHD output pixel mapping
Monitor output digital
- 1x BNC, 1x 3G-SDI output
- 1x HDMI, 1x HD output
- Crop control on HDMI output
Video processing
- Motion adaptive deinterlacer
- Proc amp controls
- Color corrector
- Legalizer
- Frame rate conversion/film cadence removal/insertion (3:2, 1:2, 2:1, 2:3)
- Adjustable delay 0-6 frames with H and V timing controls in lines and pixels
- Closed Captioning conversion (CEA-608/CEA-708)
- AFD input detection, down-convert control, and output pass through or overwrite
- Freeze (manual or on input signal loss) to black or last good frame
- Matte generator for background fill
- Video test generator
- Nominal video delay HD/SD, 2 frames (LFR), 4 frames (HFR)
Format conversion
- Convert any supported input format to any supported output format, within the same frame rate family. These three families are:
Scaling
- Supported in 2K/HD/SD formats
Up-conversion
- Hardware 10-bit
- Zoom 14:9: results in a 4:3 image zoomed slightly to fill a 14:9 image with black side bars
- Zoom Letterbox: results in image zoomed to fill fullscreen
- Zoom Wide: results in a combination of zoom and horizontal stretch to fill a 16:9 screen; this setting will introduce a small aspect ratio change
Down-conversion
- Hardware 10-bit
- Anamorphic: fullscreen
- Letterbox: image is reduced with black top and bottom added to image area with the aspect ratio preserved
- Crop: image is cropped to fit video output format
Aspect ratio conversion for SD to SD
- Letterbox: Transforms SD anamorphic material to a letterboxed image
- H Crop: Produces a horizontally stretched effect on the image; transforms anamorphic SD to full frame
- SD Pillarbox: Produces an image in the center of the screen with black borders on the left and right sides and an anamorphized image in the center
- V Crop: Transforms SD letterbox material to an anamorphic image
Audio input digital
- 48 kHz sample rate
- 8x SDI embedded inputs (16-channels each): 128-Channels, 24-bit (20-bit SD), SMPTE-272/299
- 8x balanced AES inputs (16-Channels), 1x DB-25: 16-Channels, 24-bit, AES-3
- 2x MADI inputs, 1 BNC, 1x ST Fiber: 128-Channels, 24-bit, AES-10
Audio output digital
- 48 kHz sample rate
- 1x SDI embedded output per Video Processor (16-Channels each)
- 8x balanced AES outputs (16-Channels), 1x DB-25: 16-Channels, 24-bit, AES-3
- 2x MADI outputs, 1 BNC, 1x ST Fiber: 128-Channels, 24-bit, AES-10
Audio processing
- 277 x 208 mono audio matrix, route 1 to 1, 1 to many
- Input adjustment controls for each channel
- Input adjustment controls for each channel pair
- Audio delay can automatically follow video timing delay adjustments
- Two independent 5.1 or 7.1 to stereo mixdown processors with gain adjust
- High quality Sample Rate Conversion supported on all audio inputs
- SRC bypass for non-PCM audio (e.g. Dolby E, AC-3, etc)
- Audio tone generator (mute, 400 Hz, 1 kHz)
Reference input
- External, 2x BNC
Genlock
- Lock to External Reference
- Lock to SDI input 1 thru 8
- Free run based on Temperature Compensated Crystal Oscillator
Network interface
- 1x RJ-45, 10/100/1000 Ethernet
- Embedded web server for remote control
- SNMP
PresetsFour Channel and Single Channel mode each support 40 presets
GPI1x 25-pin D-Connector (4 optically isolated GPI inputs, 4 optically isolated GPI outputs)
Power100-240 VAC 50/60 Hz (Dual, redundant power supplies), 55W typical; 70W max
Safe operating temperature32° to 104°F (0° to 40°C)
Dimensions (WxDxH)17.5" x 16" x 1.75"
Weight7 pounds (3.2 kg)