Use FFmpeg’s concat demuxer: list each video in a plain-text playlist in the order you want it played, then send FFmpeg’s output to the ingest URL and stream key shown in YouTube Live Control Room. Stream copy can avoid re-encoding when the files have compatible streams; otherwise, convert them to one consistent output profile.
1. Create a playlist in playback order
Put a text file such as playlist.txt in a predictable folder with the videos. Add one file directive per video, in the exact order you want them to play:
ffconcat version 1.0
file 'video-01.mp4'
file 'video-02.mp4'
file 'video-03.mp4'The optional ffconcat version 1.0 marker must be the first line exactly as shown for automatic script recognition. Paths may be relative to the working directory or absolute. Quote paths containing spaces or special characters appropriately; FFmpeg documents escaping such characters with backslashes or single quotes. Confirm that every referenced file exists and that FFmpeg can open it. See the FFmpeg concat demuxer documentation.
The concat demuxer reads the files sequentially and adjusts timestamps so each follows the previous one. It expects the files to have the same streams, including compatible codecs and time bases. File durations affect the timestamps of later files, so inaccurate duration metadata can cause artifacts; the playlist’s duration directive can override a file’s detected duration when necessary.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstall#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
2. Choose stream copy or transcoding
| Approach | Use it when | Trade-off |
|---|---|---|
Stream copy (-c copy) |
The input files meet the concat demuxer’s stream-compatibility requirements and the output muxer accepts their streams. | Avoids decoding and re-encoding, but does not make incompatible inputs compatible. |
| Transcoding | Inputs differ, or you need a consistent output profile, resizing, frame-rate conversion, or filters. | Produces a common output format but uses processing resources and re-encodes the media. |
FFmpeg’s command-line documentation describes stream handling and output options; consult it alongside the concat documentation before adapting a command to different media.
For compatible files: stream copy
This is a template, not a command validated against your files or FFmpeg build:
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
ffmpeg -re -f concat -safe 0 -i playlist.txt -c copy -f flv "<YouTube RTMP(S) ingest URL and stream key>"-re reads at the media’s native rate for real-time output; -c copy passes streams through without re-encoding. Replace the placeholder with the exact ingest destination YouTube provides, using the URL format displayed in Live Control Room. Whether this works depends on the inputs, FFmpeg build, output muxer, and destination protocol.
When the files differ: transcode to one profile
The following illustrative SDR H.264/AAC command targets 720p30. Adapt it to your source media, hardware and available upload bandwidth; it is not a universal preset:
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsRank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
ffmpeg -re -f concat -safe 0 -i playlist.txt
-vf "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,fps=30,format=yuv420p"
-c:v libx264 -preset veryfast -b:v 8M -maxrate 8M -bufsize 16M
-g 60 -keyint_min 60 -sc_threshold 0
-c:a aac -b:a 128k -ar 44100
-f flv "<YouTube RTMP(S) ingest URL and stream key>"The 8 Mbps video target is YouTube’s recommended H.264 bitrate for 720p30, not a recommendation for every resolution or frame rate. The 60-frame GOP corresponds to a two-second keyframe interval at 30 fps. YouTube’s encoder guidance recommends CBR, a two-second keyframe interval (not exceeding four seconds), and AAC or MP3 audio; select a bitrate from its current table for the chosen codec, resolution and frame rate. For H.264, YouTube lists 3 Mbps minimum and 8 Mbps recommended at 720p30, and 5 Mbps minimum and 14 Mbps recommended at 1080p30. These are profile-specific figures, not universal constants. See YouTube’s live encoder settings.
The example sets a target and maximum video rate, but YouTube recommends constant bitrate (CBR). Confirm the actual encoder behavior for your FFmpeg build and chosen settings rather than assuming a command-line combination guarantees CBR.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
3. Get the YouTube destination and prepare the stream
- In YouTube Studio, create or select a live stream and copy the stream URL and stream key into your encoder configuration. YouTube’s encoder setup instructions explain this process; the exact URL and key are account- and stream-specific.
- Keep the key private. Do not publish it, include it in a public script or share a command containing it. If it is exposed, replace or reset it in YouTube Studio.
- Check the output resolution, frame rate, video and audio codecs, keyframe interval, bitrate and available upload bandwidth. Use YouTube’s current recommendation for the specific output profile.
- Review the rights and permissions for every video and audio track. A live stream is still subject to YouTube’s copyright and platform rules; using a playlist does not grant permission to rebroadcast material.
- If you use
-safe 0, keep the playlist under your control and do not allow untrusted entries. That option permits paths outside the concat demuxer’s safe subset. For simple trusted relative paths, try omitting it if FFmpeg accepts them.
First-time live-stream activation on an account may take up to 24 hours, according to YouTube Help; allow for that before a scheduled broadcast.
4. Test, start and monitor
- Check the playlist order and file paths, then make a private or unlisted test where appropriate.
- Include both movement and audio in the test. YouTube specifically advises testing before going live; see its stream tips.
- Run the chosen FFmpeg command and check the preview and audio in Live Control Room before starting the public event.
- Monitor stream health and YouTube messages during transmission. Watch for dropped frames, audio problems and interruptions rather than relying only on FFmpeg’s process status.
5. Troubleshoot common failures
| Symptom | Likely cause | What to check or try |
|---|---|---|
| A file will not open | A playlist path is wrong, inaccessible, or parsed incorrectly because of spaces or special characters. | Check the working directory, verify each path and use correctly quoted or escaped paths. Test access to each file. |
| Concat errors or playback breaks at a file boundary | Inputs have different stream layouts, codecs or time bases, or duration metadata is inaccurate. | Inspect the input properties, correct duration information if needed, or transcode to a common output profile. |
| FFmpeg connects unsuccessfully | The stream URL or key may be incorrect, the wrong destination format may be in use, or live streaming may not yet be enabled. | Copy the current URL and key from Live Control Room, verify the output settings, and check account activation status. |
| YouTube reports unstable or poor stream health | Bitrate may not fit the chosen profile or available upload bandwidth; encoder settings may not match YouTube’s guidance. | Check YouTube’s current bitrate table for the output codec, resolution and frame rate, then verify keyframe interval and bandwidth. |
| Video appears but audio is missing or wrong | Inputs may have inconsistent audio streams or the output profile may not be suitable. | Test audio before going live; for mixed inputs, use a controlled transcode to a consistent audio format and verify it in Live Control Room. |
Or let it run in the cloud
If the goal is an always-on YouTube channel rather than a one-off FFmpeg session, StreamNeo runs uploaded videos or playlists from the cloud, so nothing has to stay on at home. Upload your recording or build a playlist, add your YouTube stream key once, and go live. It streams the upload as made, up to 4K 60fps at one flat price per slot, with automatic recovery if YouTube drops the stream. The first day is free with no card. Monthly service is $9.99 per month. Start the free day with StreamNeo.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Frequently Asked Questions
Does the playlist repeat automatically?
The concat playlist shown here lists files to play in sequence; it does not by itself set up endless looping.
Can I use this method for a live camera feed?
No. This workflow sends prerecorded files from a playlist, not a camera input.
Quick Recap
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.
