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For those who don’t know the tool: AJA builds video I/O, conversion, sync, colour-management and IP infrastructure used around production and postproduction facilities. The FS8 sits in the machine room rather than on an editor’s desktop: SDI or SMPTE ST 2110 feeds arrive from playback, grading, QC, graphics or other infrastructure, and FS8 can synchronize, scale, convert, colour-process, delay and route them before they reach monitoring, internal cinemas, mastering, playout or other facility destinations.
AJA’s FS8 takes the familiar frame synchronizer and feeds it rather a lot of vitamins. The 1RU processor combines multi-channel frame synchronization, scaling and format conversion with HDR/WCG processing, audio handling and a gateway between 12G-SDI and SMPTE ST 2110.
That combination is relevant to postproduction facilities because post rarely migrates infrastructure in one neat sweep. A grading room may still run SDI. A QC station may expect another format. An internal cinema needs a dependable feed. A mastering suite may have to service SDR and HDR destinations on the same afternoon. Meanwhile, someone has decided that the new backbone should be ST 2110.
FS8 is designed to sit in the middle of that argument. AJA gives you up to eight independent HD or 2K processing channels, or up to four full-resolution UHD channels. Each can handle frame sync and conversion duties, while the chassis can exchange signals between SDI and ST 2110.
IP without throwing away the BNCs
The useful part for an established post house is not simply that FS8 has both SDI and Ethernet connectivity. It can act as a boundary between them. An existing SDI output from a grading system, mastering chain, playout device or other machine-room hardware can enter FS8, be synchronized or processed and then leave as ST 2110 for transport across an IP backbone. At another endpoint, the journey can go the other way.
That makes a staged migration possible. Grading rooms, QC stations and screening spaces can remain SDI islands while the facility begins moving longer-distance or central routing onto IP. Nobody needs to replace every perfectly serviceable SDI device merely because a new switch has appeared in the rack. FS8 can also operate entirely with ST 2110 signals, so the SDI side is not compulsory once a facility eventually moves beyond it.
One architectural point is worth making very clearly: FS8 is not the facility’s IP router or Ethernet switch. The ST 2110 switching fabric still moves multicast traffic around the building. FS8 is an endpoint, processor and gateway attached to that network. In other words, buying the clever 1RU box does not make multicast configuration, PTP timing or network engineering disappear in a puff.
Four ports, many packets
FS8 provides four SFP28 cages for its IP media connections and supports 10 or 25GbE operation. AJA gives you SMPTE ST 2110-10, -20, -21, -30 and -40 support for timing, uncompressed video, traffic shaping, audio and ancillary data, together with ST 2022-7 redundancy.
The four interfaces form two redundant pairs for ST 2022-7 workflows. In a properly designed redundant network, matching streams can travel over separate paths so a failure on one does not immediately take the signal with it. Because if something goes wrong, it is always during the session with the biggest client.
AJA specifies fibre SFPs for these connections. Direct Attach Copper is not supported. The company gives 25GBASE-SR over multimode fibre and 25GBASE-LR over single-mode fibre as examples, but leaves validation of the actual SFP, switch and complete system to the customer. That is a very infrastructure-shaped detail, but it matters. A post house taking its first step into ST 2110 needs to budget for the network around FS8, not just FS8 itself.
SDI remains very much alive
The baseband side starts with eight 12G-SDI BNC inputs and eight outputs. Optional SDI SFP modules can extend connectivity to 16×16 SDI. That lets a facility retain substantial SDI infrastructure while adding an IP core where it makes sense. A colour suite does not suddenly become obsolete because the machine room has acquired fibre.
FS8 then combines several jobs that would otherwise often be spread across smaller utility devices. Its processing includes frame synchronization, up/down/cross conversion, frame-rate conversion, scaling, video delay, LUT processing and colour correction. For a postproduction machine room, this consolidation may be the more persuasive feature. One chassis can potentially replace several bits of glue whose chief achievement is normally occupying rack space until somebody forgets why they are there.
Eight HD paths, four proper UHD paths
FS8 contains eight video processors. All eight can operate independently for HD work. Full-resolution UHD processing pairs processors, resulting in up to four UHD channels. AJA also provides modes that allow a greater number of UHD signal paths by processing internally at HD resolution. That is useful infrastructure flexibility, but it should not be confused with four channels of full-resolution UHD image processing.
For post facilities, the distinction affects where the box is deployed. A critical UHD mastering or grading path deserves different consideration from a confidence feed, preview output or utility conversion. The routing architecture allows inputs and outputs to be assigned to processing channels, while presets can store system, video, audio, IP and LUT configurations. That is handy when the same hardware needs one personality for QC in the morning and another for a client screening in the afternoon.
HDR moves into the machine room
FS8 also performs HDR and wide-colour-gamut processing, including HDR-to-HDR, HDR-to-SDR and SDR-to-HDR transforms. AJA lists BT.709 and BT.2020 handling, user 3D LUTs and additional colour-management options.
For postproduction, that does not replace the grading system. What it can do is handle downstream adaptations after the creative grade has been established. A facility might, for example, need an HDR master feeding one destination while an SDR monitoring or QC path is required elsewhere. Performing those utility transforms in infrastructure avoids turning the grading workstation into a permanent signal-conversion department.
Optional colour-processing licences extend this further. AJA offers Colorfront Engine processing and BBC HLG LUTs as separate perpetual options. The Colorfront package includes an SDR-to-Dolby-Vision preview workflow, which AJA sees as a preview path rather than an integrated Dolby Vision mastering system. That qualifier matters in post. A preview conversion is useful. A master is what eventually gets delivered.
Audio brings the giant matrix
The audio side is equally substantial. AJA specifies a 459×448 mono audio matrix combining embedded SDI, MADI, Dante and ST 2110-30 sources and destinations. Individual audio paths can be routed and adjusted for level, delay, phase and sample-rate conversion. Dante provides up to 64 channels in and out, while MADI and ST 2110-30 extend the options for larger facility installations.
This is relevant to post houses because video migration rarely happens without audio following behind, carrying several suitcases. A hybrid suite may need embedded SDI audio at one end, networked audio elsewhere and carefully aligned monitoring throughout.
By handling video conversion and a substantial amount of audio plumbing in the same chassis, FS8 can reduce the number of embedders, disembedders, delay units and miscellaneous translators surrounding a room. Video delay reaches up to 60 frames in HD or 30 frames in UHD, while configurable audio delay reaches 2.5 seconds. AJA also provides a low-latency video-processing mode below half a frame, although some processing options are restricted in that mode. And if you ever thought, “Why do I need a de-embedder?” you haven’t sat in the big grading suite, with the audio running 6 frames out of sync.
PTP meets old-fashioned house sync
Timing is another reason FS8 makes sense at the edge of an IP migration. On the ST 2110 side, it can lock to PTP. On the traditional side, analogue black burst and tri-level reference remain available. AJA also allows an analogue reference output to be derived from PTP timing for downstream equipment.
That makes FS8 useful where a new PTP-timed IP core has to coexist with existing SDI hardware expecting traditional reference. Again, it does not design the timing architecture for you. It simply gives both sides somewhere to meet.
Control from somewhere more comfortable
AJA provides a browser-based node interface with signal routing, configuration, video preview, audio meters and status monitoring. There is also an OpenAPI-based REST interface for custom control and third-party integration, alongside NMOS IS-04 and IS-05 support for IP discovery and connection management. For a machine-room processor with hundreds of possible audio routes and multiple processing chains, remote control is less of a luxury than an act of kindness.
Presets also make FS8 more useful as shared infrastructure. A post facility can prepare known configurations for grading, QC, screening or mastering workflows instead of rebuilding the signal path every time a room changes job.
One box, fewer excuses
AJA currently lists FS8 at $14,995 US MSRP plus applicable tariffs, with international pricing varying. The optional perpetual Colorfront Engine licence is listed at $1,995, while the BBC HLG LUT licence is $295. AJA offers 15-day trials for those colour options.
A facility can use it for frame sync, SDI/IP conversion, raster and frame-rate conversion, HDR/SDR transforms, audio routing, delay and timing at the same boundary. That can simplify a machine room and, more importantly, provides a practical place to connect yesterday’s SDI installation to tomorrow’s ST 2110 backbone.
For studios that are still mostly SDI, FS8 looks particularly interesting as a first serious ST 2110 step. The old infrastructure can keep working while IP is introduced where it provides a clear operational benefit.
The networking still needs proper engineering. The fibre still needs compatible optics. PTP still has to behave. But at least the transition no longer requires the entire facility to wake up one Monday morning speaking IP.
| Product | AJA FS8 |
| Developer | AJA Video Systems |
| Form factor | 1RU |
| Video processing | Up to 8 HD/2K channels or 4 full-resolution UHD channels |
| SDI | 8×8 12G-SDI BNC; up to 16×16 with optional SDI SFPs |
| IP video | SMPTE ST 2110-20; four 10/25GbE SFP28 cages; ST 2022-7 redundancy |
| Timing/control | PTP/ST 2059-2; NMOS IS-04/IS-05; REST API |
| Audio | Embedded SDI, MADI, Dante and ST 2110-30; 459×448 mono matrix |
| HDR/WCG | HDR/HDR, HDR/SDR and SDR/HDR processing; BT.709/BT.2020; 3D LUT workflows |
| Optional colour licences | Colorfront Engine: $1,995 perpetual; BBC HLG LUTs: $295 perpetual; 15-day trials |
| Pricing | $14,995 US MSRP plus applicable tariffs; US pricing only, international pricing varies |
