An SDI encoder turns a camera or switcher output into a network stream, but the right box depends on where that stream needs to go. A simple webcast, a low-latency contribution link, and an NDI production setup call for different features.
These 10 options span single- and multichannel hardware, HD and 4K inputs, and a range of streaming protocols. Use the guide below to narrow the field by signal format, destination, and workflow.
Best 10 Sdi Video Encoders Picks for 2026
Flexible Single-Input Streamer
- Four simultaneous output streams
- H.265/H.264 with broad protocol support
- Adjustable streams and on-screen overlays
Best For: One SDI feed sent to multiple destinations
NDI Workflow Bridge
- SDI-to-NDI|HX or NDI|HX-to-SDI modes
- PoE, tally light and tripod mount
- No full NDI or simultaneous encode/decode
Best For: SDI and NDI|HX production integration
4K Multi-Stream Option
URayCoder 4K SDI to IP Encoder
- Listed 4K input/output up to 30 fps
- Four simultaneous network streams
- Verify inputs: listing also references HDMI
Best For: Configurable 4K streaming to multiple destinations
SDI-and-USB Workflow Converter
ZowieBox SDI IP Encoder Decoder
- SDI/IP encoding and decoding options
- SDI-to-UVC and UVC H.264-to-SDI
- PoE, SDI loopout and tally light
Best For: Single-channel SDI, IP and UVC conversion
Best for SDI-Only 4K
Magewell Ultra Encode SDI Plus
- Encodes SDI up to 4096×2160p30.
- Streams via SRT, RTMP, NDI|HX, and more.
- Records internally, to USB, or to network storage.
Best For: SDI-only 4K streaming with integrated recording
Best for 1080p SDI Loopout
ISEEVY H.265/H.264 SDI Encoder
- Handles SDI input up to 1080p60.
- Includes SDI loopout.
- Supports SRT, RTMP, RTSP, and other protocols.
Best For: Single-channel 1080p SDI streams with loopout
Best for Mixed Inputs
- Mixes HDMI and SDI in PiP or side-by-side layouts.
- Streams to up to six destinations.
- Records to SD card, USB, or network drives.
Best For: Live productions combining HDMI and SDI sources
Best for Four SDI Sources
ISEEVY 4-Channel H.265 SDI Encoder
- Four HD/3G-SDI inputs
- H.265 and H.264 encoding
- Per-channel watermark support
Best For: Four-source streaming setups
Best for NDI Workflows
- One SDI-to-NDI channel
- Up to 2048 × 1080 at 60 fps
- PoE or USB power
Best For: Single-source SDI-to-NDI conversion
Best for Multi-Platform Streaming
- Up to four output streams
- OLED status display
- Confirm connector before buying
Best For: Sending one source to multiple streaming destinations
Flexible Single-Input Streamer – URayCoder SDI to IP Encoder
Among sdi video encoders, this URayCoder model is a practical choice when one SDI source needs to reach several streaming destinations. It encodes H.265 or H.264 video and can output four streams simultaneously, each with its own protocol.
Best For: Streaming a single SDI feed to multiple platforms or network destinations.
Pros:
- Four simultaneous streams can use different protocols.
- Supports SRT, RTMP(S), RTSP, HLS, UDP and more.
- Offers text, logo and time overlays, plus resolution, frame-rate and bitrate controls.
Cons:
- Has one SDI input, so it is not a multi-camera input solution.
- Multiple output settings may take time to configure for a specific workflow.
Choose this unit for flexible delivery from one SDI source, particularly if you need separate stream settings or branded overlays.
For buyers comparing sdi video encoders for NDI production, this ZowieBox can encode SDI to NDI or switch modes to decode NDI to SDI. It supports certified NDI|HX formats, including NDI|HX3, but not full-bandwidth NDI.
Best For: Connecting SDI equipment with NDI|HX-based production workflows.
Pros:
- Switches between SDI-to-NDI encoding and NDI-to-SDI decoding.
- Decoding mode can turn RTMP, RTSP or SRT streams into SDI and NDI output.
- Compact aluminum design includes PoE support, a tripod mount and a tally light.
Cons:
- Cannot encode and decode at the same time.
- Does not support full NDI (NDI|HB).
- Earlier hardware has stated compatibility exceptions for certain SDI devices.
Its main advantage is bridging SDI and NDI|HX in a small, independently powered box. Confirm your NDI format and hardware compatibility before building it into a production chain.
If 4K delivery is the priority among sdi video encoders, this URayCoder model lists 3840 × 2160 input and output at up to 30 fps, with H.265/H.264 encoding. It can send four simultaneous output streams using different protocols.
Best For: A 4K SDI streaming setup that needs several network outputs and configurable presentation.
Pros:
- Supports up to 4K at 30 fps, according to the supplied specifications.
- Outputs four simultaneous streams with options including SRT, RTMP(S), RTSP and HLS.
- Provides logo, caption and timestamp overlays alongside bitrate and frame-rate controls.
Cons:
- 4K frame rate tops out at 30 fps in the supplied specifications.
- The listing mixes SDI positioning with HDMI-specific feature descriptions; verify the exact input configuration before purchase.
This is the most relevant option here for stated 4K support and multi-protocol distribution. Because the supplied feature descriptions reference both SDI and HDMI, check the connection details against your source equipment.
This ZowieBox stands out among sdi video encoders for its conversion options: it can stream an SDI signal over SRT, RTMP(S) or RTSP, decode those network streams to SDI, and bridge SDI with supported UVC workflows. It operates without a PC for standalone streaming.
Best For: Productions that need a compact SDI/IP converter with UVC options and flexible placement.
Pros:
- Supports SDI encoding and network-stream-to-SDI decoding for SRT, RTMP(S) and RTSP.
- Offers SDI-to-UVC and UVC H.264-to-SDI conversion.
- Includes PoE support, SDI loopout, a tally light and a tripod mount.
Cons:
- Provides one SDI channel rather than multiple SDI inputs.
- UVC-to-SDI decoding is described for UVC H.264 sources, so confirm your source format.
Consider it when signal conversion matters as much as live streaming. Its single-channel design is better suited to one source or destination at a time than a multi-input production rack.
Best for SDI-Only 4K – Magewell Ultra Encode SDI Plus
Among sdi video encoders, the Magewell Ultra Encode SDI Plus is a strong fit when your source is SDI and you need a compact, standalone 4K workflow. It accepts SDI video up to 4096×2160p30 and encodes in H.264 or H.265.
Best For: SDI-based live production that needs multiple streaming protocols and local recording.
Pros:
- Supports RTMP, RTMPS, SRT, NDI|HX, HLS, and TS over UDP/RTP.
- Can stream while recording to its 128 GB internal storage, USB storage, or a network location.
- Offers PoE, Wi-Fi, and web, API, or on-device control.
Cons:
- SDI input only; it does not offer the HDMI/SDI mixing of the AIO model.
- 4G/5G USB modem support requires a modem that is not supplied.
Choose this model if SDI is your established signal path and integrated recording matters more than adding a second video input.
Best for 1080p SDI Loopout – ISEEVY H.265/H.264 SDI Encoder
ISEEVY H.265 H.264 SDI Video Encoder with Loopout Support RTMP RTMPS SRT RTSP UDP HTTP Protocols
Check Price On AmazonIf you are comparing sdi video encoders for a 1080p signal rather than 4K, this ISEEVY unit focuses on the essentials: SDI input up to 1080p60, H.265/H.264 encoding, and SDI loopout.
Best For: Single-channel 1080p SDI streaming setups that also need a loopout connection.
Pros:
- Accepts and encodes SDI video up to 1080p60.
- Supports RTMP, RTMPS, SRT, RTSP, UDP, and HTTP.
- Includes text and image on-screen display management.
Cons:
- Its stated maximum is 1080p60, not 4K.
- Provides one channel, so it is not intended for combining multiple inputs.
Its loopout and protocol selection make it a practical choice for a straightforward SDI feed; look elsewhere if 4K or input mixing is required.
Best for Mixed Inputs – Magewell Ultra Encode AIO
The Magewell Ultra Encode AIO stands out among sdi video encoders when a production also uses HDMI. It can take either input or combine both in picture-in-picture or side-by-side layouts, with SDI input up to 4096×2160p30 and HDMI input up to 4096×2160p60.
Best For: Live productions that need HDMI/SDI input mixing, multi-destination streaming, and recording in one unit.
Pros:
- Combines HDMI and SDI sources in two on-device layouts.
- Streams to up to six destinations using protocols including RTMP, SRT, NDI|HX2/HX3, and HLS.
- Records to SD card, USB storage, or network drives while streaming.
Cons:
- SDI input tops out at 4096×2160p30, even though HDMI accepts up to p60.
- At 10 × 7 × 4 inches, it takes more space than the compact SDI Plus.
Pick the AIO when combining two source types is worth the larger footprint; an SDI-only setup may not need its mixing features.
Best for Four SDI Sources – ISEEVY 4-Channel H.265 SDI Encoder
ISEEVY 4 Channel 1080P H.265 H.264 SDI Video Encoder Support RTMP RTMPS SRT RTSP UDP HTTP Protocols
Check Price On AmazonFor buyers comparing sdi video encoders to handle several cameras, this ISEEVY unit accepts four HD/3G-SDI video and audio inputs and encodes in H.265 or H.264. It is a practical fit when each source needs its own stream.
Best For: Four-source SDI setups that need flexible streaming protocols and per-channel watermarks.
Pros:
- Four HD/3G-SDI input channels.
- Supports H.265 and H.264 encoding.
- Includes RTMP, RTMPS, SRT, RTSP, UDP, RTP, and HTTP support, plus a watermark for each channel.
Cons:
- Requires a 12V DC supply.
- Specified upper temperature rating is 45°C.
Choose this model for input capacity and protocol choice; check that its power and operating-temperature requirements suit your installation.
Best for NDI Workflows – Magewell Pro Convert SDI TX
Among sdi video encoders, the Magewell Pro Convert SDI TX is aimed specifically at bringing one SDI source onto an NDI High Bandwidth network. It accepts SD, HD, and 3G-SDI and supports resolutions up to 2048 × 1080 at 60 fps.
Best For: AV-over-IP installations that need a single SDI source converted to NDI.
Pros:
- Built-in deinterlacing, scaling, aspect-ratio, and color-format conversion.
- Supports up to 16 channels of embedded SDI audio.
- Offers Gigabit Ethernet, PoE or USB power, and compatible PTZ camera control.
Cons:
- Handles only one SDI input channel.
- Its stated output is NDI High Bandwidth, so it is not the documented choice for direct RTMP or SRT streaming.
This is the focused option when NDI integration and onboard video processing matter more than multi-input capacity.
Best for Multi-Platform Streaming – ORIVISION ES901 SDI Encoder
If you are shopping for sdi video encoders to distribute one feed across services, the ORIVISION ES901 supports up to four simultaneous video streams. Its listed streaming protocols include RTMP, RTMPS, SRT, RTSP, HLS, and HTTP.
Best For: A single-source setup that needs multiple streaming outputs and an onboard status display.
Pros:
- Outputs up to four video streams simultaneously.
- OLED display provides real-time status information.
- Supports separate audio encoding and multiple streaming protocols.
Cons:
- Four output streams do not mean four input channels; the supplied details list one port.
- The supplied listing has conflicting connector and model details, so confirm the SDI input configuration before ordering.
The multi-stream output is its clearest advantage, but verify the exact hardware variant because the supplied specifications also mention HDMI and two model identifiers.
How We Picked These Sdi Video Encoders
We focused on hardware with SDI input and a clear role in streaming or IP production. The selection covers single-channel web streaming, multichannel encoding, NDI conversion, and 4K-capable workflows. We also considered stated codec and protocol support, SDI loopout, recording, power options, and whether a unit can serve as a decoder. Specifications alone cannot establish reliability or stream quality: confirm current firmware capabilities and test a unit with your own sources and destinations before a critical event.
Quick Comparison by Workflow
- Web streaming: Look for H.264 and RTMP or RTMPS support, plus SRT if you need to send a feed to a compatible remote receiver.
- NDI production: The ZowieBox NDI model, Magewell Pro Convert SDI TX, and Magewell Ultra Encode models are the NDI-oriented choices; check whether your setup requires full NDI or NDI|HX.
- Several SDI cameras: Compare the four-channel ISEEVY and multichannel 4K model by simultaneous input count, resolution, and per-channel output limits.
- 4K or mixed inputs: The Magewell Ultra Encode SDI Plus and Ultra Encode AIO target more demanding setups; the AIO adds HDMI/SDI input flexibility and mixing.
Key Buying Factors for Sdi Video Encoders
Match the SDI Signal First
Check the exact input format—not just the connector. Confirm supported SDI standards, resolution, frame rate, interlacing, and embedded-audio handling against your camera or switcher. A 3G-SDI unit intended for 1080p should not be assumed to accept a 4K signal. If you need a local monitor or backup path, verify that loopout works in your intended configuration.
Choose the Codec and Delivery Protocol
H.264 remains a practical choice for broad compatibility; H.265 can reduce bandwidth when the receiving platform supports it. RTMP/RTMPS commonly serve streaming platforms, while SRT is useful for contribution across unpredictable networks. RTSP, UDP, and HLS suit different local distribution or playback needs. Confirm the exact combination of codec, protocol, resolution, and simultaneous streams you plan to use; a device may list each feature without supporting them all at once.
Plan for Network and Operations
Check available upload bandwidth, wired-network requirements, power method, and whether your crew needs recording, PoE, an on-device display, or remote configuration. For NDI, distinguish full NDI from NDI|HX variants and budget network capacity accordingly. If latency matters, look beyond a protocol label: the encoder settings, transport, decoder, and player all affect the end-to-end delay.
Who Should Buy Which Sdi Video Encoders?
For a straightforward single-camera stream, start with a single-channel H.264/H.265 SDI encoder that supports your destination and budget. Choose a multichannel unit when several SDI feeds must be encoded from one location, but verify independent channel settings and total throughput. If your production runs on NDI, prioritize the ZowieBox NDI or Magewell NDI-capable options according to the NDI format your system uses. Consider the Ultra Encode SDI Plus for a standalone 4K SDI workflow, or the Ultra Encode AIO when HDMI/SDI flexibility and mixing are worth the added capability.