What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
To loop a prerecorded video into a YouTube live stream with FFmpeg, send it at real-time speed with -re, loop the input with -stream_loop -1, encode H.264 video and AAC audio, and publish to the RTMPS server URL and stream key from YouTube Live Control Room. The command below is a 1080p30 starting point; adjust its bitrate and keyframe interval to match your actual output and YouTube’s current settings.
FFmpeg command for a looping YouTube stream
Replace input.mp4 with your video file and replace the destination with the RTMPS server URL and stream key shown in YouTube Live Control Room:
As an Amazon Associate I earn from qualifying purchases.
ffmpeg -re -stream_loop -1 -i input.mp4
-c:v libx264 -preset veryfast
-b:v 4500k -maxrate 4500k -bufsize 9000k
-g 60 -keyint_min 60 -sc_threshold 0 -pix_fmt yuv420p
-c:a aac -b:a 128k -ar 44100
-f flv "rtmps://SERVER/STREAM_KEY"This example is intended for a 30 fps output, with stereo AAC audio. It does not resize the video or convert its frame rate. Its 4,500 Kbps video target is only a conservative example—not YouTube’s recommended 1080p30 target. Choose your video bitrate based on the output resolution and frame rate, and confirm the file’s streams and frame rate before relying on the command. The example has not been tested against your particular file, FFmpeg build, channel, or network.
Free tools Windows power users keep installed
One-click scans. No signup required.
What the options do
-rereads the file at its native frame rate instead of sending it as fast as the encoder can process it. That is appropriate when replaying a file as a live stream.-stream_loop -1loops the input indefinitely. It is an input option, so keep it before-i. It repeats the file; it does not restart FFmpeg after a crash or restore a failed network connection.-c:v libx264selects FFmpeg’s H.264 encoder.-b:v,-maxrate, and-bufsizeset the video rate-control target and limits. The example uses a two-second buffer value relative to its target bitrate.-preset veryfasttrades some encoding efficiency for lower encoding load. If the machine cannot encode in real time, a faster preset may help, at the cost of compression efficiency; a slower preset can require more processing capacity.-g 60sets a maximum GOP size of 60 frames, while-keyint_min 60sets the minimum keyframe interval and-sc_threshold 0disables scene-change keyframes. At 30 fps, 60 frames is two seconds. If your output frame rate differs, set it deliberately and recalculate the GOP to roughly two seconds of frames.-pix_fmt yuv420pselects a widely compatible pixel format for H.264 playback and ingest.-c:a aac -b:a 128k -ar 44100encodes audio as AAC at 128 Kbps and 44.1 kHz. Those are YouTube’s published recommendations for stereo AAC audio.-f flvselects the FLV muxer commonly used for RTMP-family streaming. The destination uses RTMPS, the encrypted RTMP option YouTube recommends.
Set bitrate and keyframes for your actual stream
YouTube’s live encoder guidance recommends CBR, a two-second keyframe interval, and no more than four seconds between keyframes. Its published H.264 video recommendations include these resolution and frame-rate targets:
#1 Best Overall
- 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.
| Output | Minimum bitrate | Recommended bitrate |
|---|---|---|
| 720p30 | 3 Mbps | 8 Mbps |
| 1080p30 | 5 Mbps | 10 Mbps |
| 1080p60 | 6 Mbps | 17 Mbps |
| 1440p30 | 7 Mbps | 21 Mbps |
| 4K30 | 11 Mbps | 42 Mbps |
These are YouTube’s published H.264 recommendations for the listed ingest resolution and frame rate, not a promise that a particular connection can sustain them. Use the row matching your intended output, then ensure your upload connection has stable headroom above the total stream bitrate. YouTube also publishes guidance for AV1 and H.265; check its live settings page for current recommendations before deployment because platform guidance can change.
The sample command does not specify -r, so it preserves the source’s frame rate. If you choose to convert frame rate, specify an output frame rate and set -g and -keyint_min accordingly. For example, 60 frames gives a two-second interval at 30 fps but only one second at 60 fps.
Rank #2
- 【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.
Prepare YouTube and start the stream
- In YouTube Studio, open Live Control Room and create or select the stream. YouTube’s encoder setup instructions explain where to obtain the server URL and stream key.
- Replace
rtmps://SERVER/STREAM_KEYwith the RTMPS destination values for your stream. Keep the key private: anyone with it may be able to send video to that stream. - Run the command and check the YouTube preview and stream health. Test with audio and movement representative of the content you plan to broadcast before treating it as production-ready.
- Monitor the FFmpeg process, host, network connection, and source. The infinite loop handles only input repetition; it is not a process supervisor, failover system, or guarantee of uninterrupted connectivity.
Check the source file and handle special cases
The command assumes the input has usable timestamps and a video stream plus audio that can be encoded as stereo AAC. Inspect the file before streaming if its properties are uncertain; its dimensions, frame rate, audio layout, available encoders in your FFmpeg build, and your sustained upload capacity all affect the settings you should use.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →If the source has no audio, do not assume looping the video creates an audio stream. A silent stream or separately supplied music requires an explicit continuous audio input and a filter or mapping setup appropriate to that choice. Likewise, a still image or unusual timestamp pattern may need a different input/filter configuration; the title does not specify which case applies.
Rank #3
- 【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.
Copyright, monetization, and long broadcasts
Looping a file does not grant rights to its video or audio. Use content you own or are licensed to broadcast, and consider YouTube’s copyright rules before making a long-running stream public. Repeated or reused material can also affect a channel’s monetization eligibility; eligibility depends on YouTube’s current policies and the channel’s content, not on the FFmpeg command.
YouTube says streams under 12 hours are automatically archived when ended. Do not assume that one uninterrupted stream longer than 12 hours will produce a complete archive. Plan separately for the stream’s duration and any recording or archive needs.
Rank #4
- ⭐【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.
Troubleshooting common failures
- YouTube does not receive a signal: check that the server URL and stream key are copied correctly, that the key belongs to the selected stream, and that the destination uses RTMPS. Avoid sharing the key publicly.
- The stream buffers or drops frames: compare the configured video and audio bitrates with the upload connection’s sustained capacity. Use the matching YouTube resolution/frame-rate recommendation and leave network headroom; a connection that only intermittently reaches the target is not sufficient.
- FFmpeg exits at the end of the file: confirm
-stream_loop -1appears before-iand that the input file is readable. This option repeats one input, not a playlist of multiple files. - Video looks wrong or the GOP interval is unsuitable: check the actual output frame rate. The sample’s 60-frame interval is two seconds only at 30 fps; choose the GOP size based on the encoded output rate.
- Audio is missing or rejected: verify that the source has an audio stream and that the chosen mapping is valid. The example encodes available input audio to AAC, but it does not synthesize audio for a silent file.
- The process stops and the broadcast ends: looping is not automatic recovery from an FFmpeg crash, host shutdown, or network outage. A production 24/7 setup needs monitoring and a way to restart or recover the process; YouTube stream health should also be checked during a representative test.
Or let it run in the cloud
If you would rather not keep a computer and home connection running, StreamNeo keeps a YouTube channel live from uploaded videos. Upload a recording or build a playlist, add your YouTube stream key, and go live. Nothing has to stay on at home; it streams the upload as made, up to 4K 60fps, at one price per slot regardless of quality, and automatically recovers if YouTube drops the stream. The first day is free with no card. Monthly pricing is $9.99 per month. Start your free StreamNeo day.
Quick Recap
Best Value
- 【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.
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.
