Bridge Live

1RU broadcast-quality, low-latency turnkey system for REMI, contribution, and streaming — developed by AJA and Comprimato

SDI Video Formats

Bridge Live 12G-4

Format	Frame rates
UltraHD 3840×2160p	23.98, 24, 25, 29.97, 30, 50, 59.94, 60
2K 2048×1080p	23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
HD 1080p	23.98, 24, 25, 29.97, 30, 50, 59.94, 60
HD 1080i	50, 59.94, 60
HD 720p	50, 59.94, 60
SD 625i	50
SD 525i	59.94

SDI standards: 12G-SDI (SMPTE ST 2082), 6G-SDI* (SMPTE ST 2081), 3G-SDI (SMPTE ST 424), 1.5G-SDI (SMPTE ST 292M), 270 Mbit/s SDI (SMPTE ST 259M-C) — all 10-bit.

*Only UltraHD 2160-line single link supported.

Bridge Live 3G-8

Format	Frame rates
HD 1080p	23.98, 24, 25, 29.97, 30, 50, 59.94, 60
HD 1080i	50, 59.94, 60
HD 720p	50, 59.94, 60
SD 625i	50
SD 525i	59.94

SDI standards: 3G-SDI (SMPTE ST 424), 1.5G-SDI (SMPTE ST 292M), 270 Mbit/s SDI (SMPTE ST 259M-C) — all 10-bit.

Video Color Component Sampling

Source	Sampling
SDI	YCbCr, 4:2:2, 10-bit
Transport Streams	YCbCr, 4:2:2 or 4:2:0, 10-bit/8-bit
NDI	P216 4:2:2 16-bit; UYVY 4:2:2 8-bit

Video Codecs

• H.264 (AVC, MPEG-4)
• H.265 (HEVC)
• JPEG 2000 (VSF TR-01)
• H.262 (MPEG-2)
• NDI
• JPEG XS (VSF TR-07)

Audio Streams / Codecs

Codec	Notes
AAC-LC	ADTS, LATM
AAC-HE	ADTS, LATM
AAC-HE v1 & v2	ADTS, LATM
AC-3	—
E-AC-3	input
Dolby-E	pass-through
MPEG-2 Audio	—
NDI	uncompressed float
Uncompressed PCM	SMPTE ST 302M-2007, multichannel

Audio I/O

	Details
Audio input (digital)	16-channel, 16 and 24-bit SDI embedded audio, 48 kHz, synchronous per SDI connection
Audio output (digital)	16-channel, 16 and 24-bit SDI embedded audio, 48 kHz, synchronous per SDI connection

Metadata

• MPEG-2 ancillary packet support (SMPTE ST 2038)
• HDR over SDI end-to-end via VPID signaling (SDR/HDR Transfer Characteristics, Colorimetry, Luminance)
• Closed Captioning (EIA-608/708), Line 21 Captions
• Metadata pass-through
• SCTE-35, SCTE-104
• Subtitles embedded within H.264 SEI messages
• Timecode embedded within HEVC and H.264 SEI messages
• Electronic program guide (EPG) on input

Containers & Protocols

Protocol / Container	Notes
HLS (input)	AVC TS segments, Fragmented MP4
HLS (output)	AVC TS segments
MPEG-TS / MPTS	input
RTMP	—
RTMPS	output
RTP, UDP	—
SRT	including encryption
VSF TR-01	—
VSF TR-07	—

Video Processing

• Auto Color Component Sampling based on I/O settings
• Cropping / Padding
• Color adjustments
• De-interlacing
• Frame rate 50% down-conversion (60p→30p, 59.94→29.97, 50p→25p)
• Frame rate up-conversion (50i→50p)
• Logo insertion
• Resizing

Audio Processing

• Channel remapping
• Gain
• Sample rate conversion
• Up/down-mixing (e.g., 5.1 to stereo and vice versa)

Synchronization

Parameter	Options
Input PCR	Global (separate transport stream) or Local (per transport stream)
Output PTS	Pass-through or add offset to input PTS
NTP / PCR	—
Encoder synchronous multi-channel transport	—
Decoder synchronous multi-channel transport	—

Configuration & Monitoring

• Local "Kiosk" interface (keyboard, mouse, and monitor)
• Remote access via browser
• REST API
• SNMP

Hardware Specifications

Bridge Live 12G-4 Form Factor

Parameter	Value
Chassis	1RU turnkey system
SDI I/O	4× full-size BNC (12G/6G/3G/1.5G-SDI compatible)
Network	2× 10 GigE
Local interface	Display Port and USB

Bridge Live 3G-8 Form Factor

Parameter	Value
Chassis	1RU turnkey system
SDI I/O	8× DIN 1.0/2.3 (3G-SDI compatible)
Network	2× 10 GigE RJ-45
Local interface	Display Port and USB

Physical & Electrical

Parameter	Value
Size (W × D × H)	17.2" × 16.9" × 1.7" (436.88 × 429.26 × 43.18 mm)
Weight (boxed)	28 lb (12.7 kg)
Weight (unit only)	18 lb (8.2 kg)
Power	100–240 VAC, 50/60 Hz, dual redundant — 190 W typical, 245 W max

Environment

Parameter	Value
Safe operating temperature	5°C to 35°C (41°F to 95°F)
Safe storage temperature	−40°C to 60°C (−40°F to 140°F)
Operating relative humidity	8%–90% non-condensing
Non-operating relative humidity	5%–95% non-condensing