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YouTube can reject a live stream when the video’s actual width and height do not match the resolution selected in Live Control Room’s Ingestion Settings. Read the exact stream-health error, compare the selected resolution with the encoder’s output dimensions, and make them match. YouTube’s published live-stream guidance does not describe a separate resolution rule for 24/7 streams.
What “incorrect video size” means
The resolution YouTube expects is tied to the setting selected in Live Control Room’s Ingestion Settings. The video sent by your encoder must have the height and width for that selected resolution. For example, if the selected setting is 1920 × 1080, the encoder must send 1920 × 1080 video—not a different size, even if the picture looks similar.
YouTube normally detects encoder settings automatically. If you use a custom stream key and have manually set a resolution, check that setting as well as the encoder output. The key question is whether the dimensions being sent match the dimensions YouTube expects.
Check the error and match the settings
- Open Live Control Room and inspect stream health. Note the exact message and its timestamp. “Incorrect video size (resolution)” points to a dimension mismatch; a different message may identify another encoder setting.
- Read the encoder’s actual output dimensions. Check the outgoing stream configuration, not just the source file’s resolution. Confirm the width and height being sent.
- Compare with Ingestion Settings. Set the encoder output to the selected resolution, or change the selected resolution to match what the encoder sends.
- If using a custom stream key, check manual settings. Confirm its Stream Resolution setting is the one you intend. YouTube recommends automatic detection by default.
- Preview and monitor stream health before relying on the feed. Resolve any remaining messages and verify that the stream is stable at the intended settings.
Check the other settings that can produce errors
A resolution warning can appear alongside another encoder issue, so do not stop at dimensions if Live Control Room reports additional problems. YouTube’s current English encoder guidance lists RTMP/RTMPS, H.264, H.265 (HEVC), or AV1 video, up to 60 fps, constant bitrate (CBR), and AAC or MP3 audio. It recommends progressive scan and square pixels, with keyframes every two seconds and no more than four seconds apart. Follow YouTube’s current guidance for your selected protocol and codec: Choose live encoder settings, bitrates, and resolutions.
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#1 Best Overall
Sale
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.
- Bitrate: Choose a bitrate appropriate for the codec, resolution, and frame rate. Examples from YouTube’s current H.264 recommendations include 1080p at 30 fps: 5 Mbps minimum and 14 Mbps recommended; and 720p at 30 fps: 3 Mbps minimum and 8 Mbps recommended. For AV1 or H.265 at 1080p30, the listed figures are 4 Mbps minimum and 10 Mbps recommended. These are recommendations, not guarantees that your encoder or connection can sustain them.
- Connection capacity: If upload bandwidth cannot reliably support the chosen mode, lower the selected resolution and use a bitrate suited to the connection. YouTube recommends testing upload bitrate and choosing a quality your connection can sustain.
- Video format and scan: Check the reported video codec and format, and use progressive rather than interlaced video.
- Frame rate and keyframes: Confirm the frame rate is supported and keyframes are approximately two seconds apart, never more than four seconds apart.
- Audio: Check that the audio codec and format are supported.
- Backup feed: If you use primary and backup streams, verify that their settings match.
YouTube’s encoder page says it automatically detects the encoder settings chosen. If you need to identify the precise problem, use the health message together with the encoder’s actual width × height, codec, frame rate, and bitrate.
Choosing a reliable resolution for a continuous stream
The highest available resolution is not automatically the best setting for a 24/7 feed. Choose a mode your encoder can send at exactly the selected dimensions, your connection can sustain at the appropriate bitrate, and your backup feed can match if you use one. A lower, stable resolution is preferable to a higher mode that repeatedly drops or generates health errors.
Rank #2
Sale
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.
Before leaving a continuous stream unattended, preview it and monitor stream health. YouTube’s live-streaming tips recommend testing failover by stopping the primary feed or disconnecting its Ethernet cable, then checking that the player switches to the backup feed. See Live streaming tips.
Common causes and fixes
| What you see | Likely issue | What to check |
|---|---|---|
| “Incorrect video size (resolution)” | Encoder output width and height do not match the selected Ingestion Settings resolution. | Compare actual output dimensions with the selected setting and make them identical. |
| Manual resolution is unexpected | A custom stream key may have manual resolution settings. | Check Stream Resolution for that key, or use automatic detection. |
| Resolution matches but health errors continue | A separate bitrate, codec, format, audio, scan, frame-rate, or keyframe issue may also be present. | Read each health message and verify the encoder against YouTube’s current settings guidance. |
| Frequent quality problems or dropped stream | The selected mode may exceed reliable upload capacity. | Test upload bitrate and consider lowering resolution and bitrate to a sustainable combination. |
| Backup does not take over cleanly | Primary and backup stream settings may differ, or failover may not be configured as expected. | Match settings and test by stopping the primary feed before depending on failover. |
Or let it run in the cloud
If the goal is to keep uploaded video playing on YouTube around the clock, StreamNeo is a cloud option: upload a recording or build a playlist, add your YouTube stream key, and go live. Your computer and home connection do not have to stay on. It streams the uploaded video as made, up to 4K 60fps, at one flat price per slot; it automatically recovers if YouTube drops the stream. The first day is free with no card, one free day per account. Monthly pricing is $9.99 per month. StreamNeo is for YouTube streams of uploaded videos, not camera broadcasts. See StreamNeo or start the free day.
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SaleBestseller No. 1
Bestseller No. 3
Best Value
ORIVISION H.265/264/MJPEG Ultra Mini HDMI 1080P Video Encoder with HDMI loopout, HTTP, RTSP, RTMP/RTMPS, SRT, HLS, FLV, Compatible with ONVIF, Multicast IPTV Encoder for YouTube Facebook Twitch Live
- 【Local Recording & Video Cropping – EH1211 Exclusive Features】 This mini HDMI video encoder supports local recording to USB drive or TF card – it can record both RTSP streaming video and direct HDMI input to external storage. The built-in video cropping function lets you customize the encoding region, making it easy to adapt input to needed displays or focus on specific areas. With its space-saving design, EH1211 is ideal for classrooms, conference rooms, and digital signage installations.
- 【ORIVISION Advantage& Ultra Mini Model】- This ORIVISION ultra mini video encoder has high integration with low cost. Ultra mini size(125x72x25mm) and light weight (200g) of H.265 encoder is perfect for live broadcasting applications with frequent move or tiny device installation space. IP encoder has 1 X HDMI Input and loop-out, 1 X 3.5mm audio input,1 X 3.5mm audio output(new), 1X USB2.0 port(new), 1X TF card port(new). IPTV encoder support audio encoding without video input.
- 【1080P@30HZ Input/Output Resolution & 2 Channel Output】- HDMI encoder supports max 1080P@30 resolution HD input and output. The video encoder for live broadcasting can output 2 channels feeds at the same time. While only 1 channel can reach 1080p output. The H.265/ H.264 encoder supports multiple different protocol feeds output at the same time, but does not support simultaneous output 1080P30.
- 【Multi-Protocols & Software & Platform & Flip Supporting】- Hardware encoder supports protocols including HTTP/HTTPS/RTSP/RTMP/RTMPS/SRT/UDP/RTP/FLS/FLV,is compatible with Onvif protocol. Multicast UDP/RTP. HDMI video encoder supports software like Flashplayer, OBS, VLC player, Vmix..etc. Fit for Youtube, Facebook, Ustream, Livestream, Twitch, Vimeo, Streamspot, Dacast, Tikilive, Netrmedi, etc. This video encoder also supports new function of image rotation and mirror flip. More convenient for live broadcasting.
- 【Powerful OSD Setting】- OSD setting function of the live broadcasting encoder makes it easy for you to add any self-defined text, time and image overlay on your video when output displayed. You may add any text/logo at any position to announce your copyrights with this hevc video encoder.
Rank #4
DDMALL H.265 HDMI Video Encoder, Mini 2K Hardware Live Encoder (AVC-2K)
- 【Ultra-Compact & Low-Power Design】 Experience maximum portability with this pocket-sized (2.95 x 1.26 x 0.87 in) HDMI video encoder, weighing only 1.13oz. Engineered for extreme efficiency, it consumes just 2.4W and can be powered directly via USB or the HDMI source. This eliminates the need for bulky external adapters—perfect for professional live broadcasting, mobile setups, and installations with limited space.
- 【Pro-Grade 1080P HD Encoding】 Deliver crystal-clear video transmission with support for up to 1080P60 HD input and stable 1080P30 encoding output. This versatile hardware encoder is fully compatible with a wide range of HDMI sources, including NVRs, PCs, drones, DSLR cameras, and professional camcorders. Whether for security monitoring or live broadcasting, it ensures a high-quality, low-latency video feed for a truly reliable user experience.
- 【2K SRT & Multi-Protocol Compatibility】 Experience broadcast-level stability with 2K SRT support, delivering secure, reliable, and ultra-low latency video over any network. This hardware encoder ensures peak efficiency with H.265/HEVC and H.264/AVC compression. Fully compatible with a wide range of protocols—including RTMP, RTMPS, HLS, RTSP, and UDP—it is tailor-made for social media live production, house of worship, secure IP surveillance, and corporate training.
- 【Centralized Cloud Management】 Beyond standard Web-UI, this encoder supports DDMALL LinkCloud for remote monitoring and control via the Internet. For large-scale deployments, we provide specialized support to assist you in building a self-hosted private cloud, ensuring absolute data security and efficient video distribution. This professional-grade centralized control simplifies complex workflows for multi-site corporate, educational, or broadcast environments.
- 【More Excellent Features & Reliable Support】This encoder elevates your broadcasting with dual-stream output, enabling simultaneous streaming to platforms like YouTube and Facebook. It also features real-time OSD overlays and direct Web-UI signal preview for precise control. Beyond the device, our professional technical team provides customized solutions, continuous firmware updates, and expert guidance to ensure your live production stays seamless.
Rank #3
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.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
