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Google Cloud Live Stream API accepts SRT input. It can receive an SRT contribution feed and distribute a separate output to a remote endpoint using RTMP. YouTube’s documented direct ingest protocols are RTMP, RTMPS, HLS and DASH—not SRT—so an SRT feed ordinarily needs a cloud relay or another compatible intermediary before it reaches YouTube.
How SRT reaches YouTube through Google Cloud
There are two protocol hops, and they should not be confused:
- Contribution: An encoder or transcoder that supports SRT sends the feed to a Google Cloud Live Stream API input configured for SRT.
- Distribution: Google Cloud sends the service output to YouTube using a protocol YouTube accepts, such as RTMP. Google Cloud’s documentation describes RTMP remote distribution using FLV; its SRT remote distribution option uses MPEG-TS.
This is a relay workflow, not direct SRT ingest by YouTube. Confirm the current input endpoint configuration in Google Cloud and the ingest protocol available for the YouTube stream key before deployment, since service settings and supported protocols can change.
What each service supports
| Service or hop | Documented protocol support | What it means for your workflow |
|---|---|---|
| Google Cloud Live Stream API input | SRT and RTMP input | Can accept an SRT contribution feed. The sending encoder or transcoder must support SRT. |
| Google Cloud Live Stream API output | HLS or DASH outputs; remote distribution using SRT or RTMP | For a YouTube destination, RTMP distribution aligns with YouTube’s documented RTMP-family ingest. Google specifies FLV for RTMP remote distribution. |
| YouTube Live direct ingest | RTMP, RTMPS, HLS and DASH | SRT is not listed among YouTube’s documented third-party ingest protocols. |
These protocol descriptions come from Google Cloud Live Stream API and Google/YouTube’s official live-streaming documentation. They establish protocol compatibility, but do not by themselves guarantee that a particular configuration, codec, or endpoint will work without checking the current service settings.
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#1 Best Overall
URayCoder HD HEVC H.265 MPEG4 H.264 4K HDMI to Video Streaming IPTV Encoder for HDMI to RTSP RTMP HTTP UDP HLS SRT Facebook YouTube Live Streaming Server
- 【Innovative Product with Leading Technology】- Equipped with an advanced H.265 /H.264 dual encoding chip, supports 4K UHD (3840x2160) video input and output, with a maximum frame rate of 30fps at 4K resolution and up to 120fps at 2K and lower resolutions, delivering a smooth and detailed visual experience. It also supports HDCP 1.4 decryption, easily decoding various HDMI ultra HD video sources, delivering a cinematic visual experience for both professional live streaming and 4K ultra HD content transmission.
- 【Multi-protocol and Multi-platform Compatibility】- Fully compatible with streaming protocols such as HTTP, RTSP, RTMP(S), SRT, HLS(M3U8), MP4, Multicast(UDP, RTP, PTL), FLV, WebRTC, TRTC, ICECAST, it can simultaneously output 4 video streams with different protocols and push them to live streaming platforms such as YouTube, Facebook, Twitch, and Vimeo with one click. Simultaneous live streaming across multiple platforms can be achieved without additional equipment.
- 【Highly Customizable Settings to Meet Individual Needs】- It supports adding static text, scrolling captions, brand logos, and timestamps. Users can freely adjust core parameters such as video resolution, frame rate, and bitrate, and also perform personalized editing functions such as video cropping, rotation, flipping, and mirroring. It supports dual input of HDMI embedded audio and line-in audio, with adjustable sound quality, making your live stream content more distinctive and allowing you to create a unique brand live stream style.
- 【Stable and Efficient Transmission, Easy Operation】- Employing HDMI to Ethernet core connection technology, it ensures stable and reliable network transmission with low latency and no lag, adapting to various network environments. Equipped with an intuitive user interface and detailed instruction manual, no professional technical background is required; setup can be completed quickly after connecting the device. It is also compatible with multiple terminals such as computers and mobile phones for management, and the video stream status can be viewed in real time via a URL.
- 【Lifetime Free Warranty and Technical Supports】- All URayCoder video codecs come with a lifetime free warranty and technical supports, supporting secondary development and feature customization to meet enterprise-level personalized needs. Meanwhile, we providing many kinds of customization services such as shell pattern printing, logo addition, hardware and function development, ensuring reliable quality and worry-free after-sales service.
Choose the YouTube output protocol
RTMPS for typical low-latency streams
YouTube recommends RTMPS for ordinary low-latency live streams. It is the most straightforward documented choice for a Google Cloud relay when the selected YouTube endpoint supports it. Google Cloud’s remote-distribution documentation describes RTMP; verify whether your configured endpoint and stream key call for RTMP or RTMPS.
HLS when HDR or codec needs call for it
YouTube documents HLS as an option for HDR or codecs not supported by RTMP. HLS sends video in segments, so it generally has higher latency than RTMP-family ingest. DASH is also among YouTube’s documented ingest protocols and is segment-based; the specific output and endpoint must be compatible across both services.
Rank #2
Zowietek ZowieBox 3G SDI NDI Video Encoder/Decoder, SDI NDI
- SDI NDI Encoder Decoder: Encode SDI signals to NDI or decode NDI signals to SDI. It supports NDI|HX3, NDI|HX2, and NDI|HX (Certified), but not full NDI (NDI|HB). Streamlines workflows with high-efficiency NDI|HX formats, ensuring seamless integration between different production systems. Note: ZowieBox cannot be used as an encoder and decoder at the same time. It can only switch between the two working modes, not use both modes at the same time
- AVoIP to NDI and SDI: It can decode AVoIP video streams (RTMP, RTSP, SRT) into NDI and SDI in decoding mode, seamlessly integrating diverse video sources into NDI-compatible workflows for enhanced efficiency in media production and broadcasting
- UVC to SDI Converter: Easily turn your UVC cameras into SDI cameras. With up to 1080@60fps decoding resolution, ZowieBox allows you to unfold more possibilities for webcam devices. Note: USB capture card functionality is not supported
- SDI Extender: Using two ZowieBoxes enables point-to-point transmission: one serves as an SDI encoder/transmitter, while the other functions as an SDI decoder/receiver. This setup allows SDI video signals to be transmitted via a LAN. Note: The SDI signal of ZowieBox (hardware before 10.1.13) is not compatible with ATOMAS SHOGUN INFERNO, SHOGUN ULTRA, Blackmagic Decklink Quad 2
- Standalone Live Streaming: Just plug and play, ZowieBox can stream videos PC-free, not affecting your computer performance at all. Support SRT caller/RTMP(S)/RTSP streaming protocol
When SRT is useful—and when it is not
Google Cloud recommends SRT over RTMP for its input endpoint when possible, citing packet-drop recovery, forward error correction, support for multiple audio elementary streams, and higher bandwidth. Those are reasons to consider SRT on the contribution leg, especially when the source-to-cloud connection is less reliable. They do not mean YouTube accepts SRT directly.
- Use SRT into Google Cloud when your contribution encoder supports SRT and you want the cloud service to receive that feed.
- Use a supported YouTube ingest protocol downstream when distributing from the cloud to YouTube; RTMP-family ingest is the typical low-latency route.
- Consider HLS if the codec or HDR requirement makes it the appropriate YouTube ingest option, allowing for higher segment-related latency.
- Check both ends for protocol, container or transport expectations and stream-key configuration. A compatible input does not prove the output endpoint is configured correctly.
What to check before you configure the relay
- Confirm source capability. Make sure the encoder or transcoder can send SRT and can be configured for the Google Cloud input endpoint.
- Select the cloud input protocol. Configure the Live Stream API input for SRT and use the endpoint details provided by Google Cloud.
- Choose a downstream protocol. For typical low-latency YouTube streaming, start by checking RTMPS availability and the relevant endpoint details. If a codec or HDR requirement calls for HLS, account for its higher segment-based latency.
- Match the YouTube destination. Use the protocol and endpoint supported by the selected YouTube stream key; do not send SRT directly to YouTube on the assumption that Cloud SRT input makes it a YouTube ingest protocol.
- Validate the full path. Check that the source is reaching Google Cloud and that the configured remote distribution reaches the intended YouTube live event. Diagnose the contribution and distribution hops separately.
Troubleshooting protocol mismatches
- The encoder cannot connect to the cloud input: Verify that the encoder supports SRT and that its SRT settings match the Google Cloud input endpoint. A service accepting SRT does not make an RTMP-only encoder SRT-capable.
- The cloud receives the feed but YouTube does not: Check the remote distribution protocol and destination details separately from the SRT input. YouTube’s documented direct ingest list does not include SRT.
- The stream works but latency is higher than expected: Check whether the YouTube output uses HLS or DASH. Segment-based delivery generally has higher latency than RTMP-family ingest.
- The expected codec or HDR format is unavailable over RTMP: Check YouTube’s HLS ingest requirements and whether HLS is suitable for the workflow; its segment-based delivery can increase latency.
- A configuration that worked before stops working: Re-check current Google Cloud input settings and the ingest protocol offered for the YouTube stream key. Protocol support and service configurations can change.
For a different job: keep uploaded videos live on YouTube
If you need to loop uploaded recordings into a 24/7 YouTube stream rather than relay a live SRT contribution feed, StreamNeo is a different kind of service. It plays uploaded videos; it is not an SRT contribution relay and does not go live from a camera. Upload a recording or build a playlist, add your YouTube stream key once, and go live. StreamNeo runs the loop in the cloud, so your computer and home connection do not have to stay on.
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Rank #3
ZowieBox, 4K HDMI NDI Video Encoder/Decoder, HDMI NDI
- Compact but Powerful Design: ZowieBox is smaller than a phone, featuring a tally light and LCD screen for streaming status. Capture console gameplay in up to 4K with zero-lag HDMI passthrough, while the built-in video encoder converts video for IP streaming. The IP stream can also be decoded back to a 4K HDMI signal.
- Standalone Game Streaming: Just plug and play—ZowieBox enables PC-free live gaming without affecting gameplay. As an RTMP hardware encoder and HDMI streamer, it delivers stable streaming directly from your source, making it ideal for gaming, live events, and professional broadcasting.
- NDI|HX3 Converter Technology: ZowieBox converts HDMI signals to NDI|HX3/HX2/HX, functioning as an NDI video encoder, or NDI Video Decoder for flexible IP workflows. Certified NDI technology enables low-latency gameplay streaming through OBS/vMix. Note: Encoder and decoder modes cannot run simultaneously; full NDI signals are not supported.
- UVC to HDMI Conversion: Supporting up to 4K@30fps and 1080p@60fps decoding, ZowieBox enables flexible conversion for webcam and video workflows. As a video decoder and HDMI to IP converter, it expands connectivity options for professional video devices. Note: USB capture card functionality is not currently supported.
- All-around Configuration Options: Control ZowieBox through its web UI on a PC, phone, or tablet. Manage connected PTZ cameras, tally light, video/audio, OSD, work mode, streams, network, and system settings. Support for VISCA over IP encoder workflows enables flexible PTZ control, while the dashboard provides video preview and system status.
Each slot includes one always-on YouTube stream, 10 GB of storage per slot pooled across active slots, looping and playlists, automatic recovery if YouTube drops the stream, and StreamNeo team support. Your upload streams as made, up to 4K 60fps, with no re-encoding or quality tiers. The first day is free with no card, one free day per account. Billing can be daily, weekly, monthly, for six months, or yearly, and can be cancelled any time; UPI and cards are available in India, and card checkout is available worldwide. For five or more slots, contact support.
Monthly pricing: $9.99 per month. Learn more at StreamNeo.
Rank #4
HEVC MPEG4 H.265 H.264 HDMI to IP Network Video Encoder, 1080P HD Digital Video Audio Encoder Hardware Supports RTSP RTMPS UDP HLS SRT, for IPTV, Live Streaming, YouTube, Facebook, OBS, NVR, etc.
- ⭐【Innovative Product with Leading Technology】- Equipped with an advanced H.265/H.264 dual encoding chip, supports 1920x1080 resolution input and output, achieving 60fps high-definition presentation with realistic and delicate color reproduction and lossless detail. It also supports HDCP 1.4 decryption, easily decoding various HDMI high-definition video sources, delivering a cinematic visual experience for both professional live streaming and high-definition content transmission.
- ⭐【Multi-protocol and Multi-platform Compatibility】- Fully compatible with streaming protocols such as HTTP, RTSP, RTMP(S), SRT, HLS(M3U8), MP4, Multicast(UDP, RTP, PTL), ONVIF, FLV, it can simultaneously output 4 video streams with different protocols and push them to live streaming platforms such as YouTube, Facebook, Twitch, and Vimeo with one click. Simultaneous live streaming across multiple platforms can be achieved without additional equipment.
- ⭐【Highly Customizable Settings to Meet Individual Needs】- It supports adding static text, scrolling captions, brand logos, and timestamps. Users can freely adjust core parameters such as video resolution, frame rate, and bitrate, and also perform personalized editing functions such as video cropping, rotation, flipping, and mirroring. It supports dual input of HDMI embedded audio and line-in audio, with adjustable sound quality, making your live stream content more distinctive and allowing you to create a unique brand live stream style.
- ⭐【Stable and Efficient Transmission, Easy Operation】- Employing HDMI to Ethernet core connection technology, it ensures stable and reliable network transmission with low latency and no lag, adapting to various network environments. Equipped with an intuitive user interface and detailed instruction manual, no professional technical background is required; setup can be completed quickly after connecting the device. It is also compatible with multiple terminals such as computers and mobile phones for management, and the video stream status can be viewed in real time via a URL.
- ⭐【Lifetime Free Warranty and Technical Supports】- All URayCoder video codecs come with a lifetime free warranty and technical supports, supporting secondary development and feature customization to meet enterprise-level personalized needs. Meanwhile, we providing many kinds of customization services such as shell pattern printing, logo addition, hardware and function development, ensuring reliable quality and worry-free after-sales service.
Or let it run in the cloud
- Upload your video or build a playlist.
- Add your YouTube stream key.
- Go live.
Nothing has to stay on at home; uploaded video streams at any quality up to 4K 60fps for one flat price per slot, and StreamNeo automatically recovers if YouTube drops the stream. The first day is free with no card. Start at StreamNeo’s free first-day signup.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
Can I send SRT directly to YouTube Live?
YouTube’s documented third-party ingest protocols do not list SRT.
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Best Value
UNISHEEN 1080P60 HDMI Video Encoder, H.265/H.264 Live Streaming Encoder, HDMI to RTSP/RTMP/SRT/HLS/WebRTC IPTV Encoder for YouTube Facebook Live, Browser Setup, No PC Software Needed
- 【Hardware H.265/H.264 Encoding at 1080P60】Dedicated hardware encoder delivers broadcast-quality 1080P60 streams with H.265/H.264 compression. Reduces bandwidth usage by up to 50% compared to legacy H.264-only solutions, while maintaining crisp, crystal-clear video output.
- 【Broad Protocol Support for IP Distribution】 Supports SRT, RTMP(S), RTSP, UDP, HTTP, HLS, WebRTC, TRTC, Icecast and SHOUTcast — integrate seamlessly with CDNs, surveillance NVRs, IPTV systems and browser-based monitoring dashboards. One device replaces multiple single-purpose streaming boxes.
- 【Browser-Based Setup in Minutes】 Set up in minutes through any browser — no software, drivers or OS compatibility issues. DHCP is enabled by default to prevent IP address conflicts on your network. Note: basic networking knowledge (IP address, RTSP/RTMP configuration) is recommended for advanced streaming setups.
- 【Compact Design with Flexible Deployment】Palm-sized form factor (approx. 90×54×29mm) fits easily behind monitors, on shelves, or in equipment racks. Low power consumption ensures reliable 24/7 operation for live events, remote monitoring, and digital signage.
- 【Professional Audio & OSD Overlay + 1-Year Warranty】 Supports HDMI embedded audio plus external 3.5mm input. Built-in OSD generator adds scrolling text, logos, or timestamps directly to the video stream — ideal for branding, event info, or security labeling. Backed by a 1-year warranty and 24/7 online technical support.
Does Google Cloud Live Stream API accept SRT input?
Yes. Its documented input protocols include SRT and RTMP.
Does StreamNeo accept SRT input?
StreamNeo is for looping uploaded videos to YouTube, not relaying an SRT contribution feed.
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