Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteShort answer: Editing a local FFmpeg concat list while FFmpeg is running is not a documented way to add or replace upcoming videos. For a changing playlist, use a playback controller that can switch inputs while keeping one encoder connected to YouTube; if your current setup cannot do that, use a planned restart rather than relying on an undocumented hot reload.
First, identify which playlist you mean
“Playlist” can refer to different parts of a streaming setup, and changing one does not necessarily change another:
- Local concat input list: A text file supplied to FFmpeg that defines media files to join.
- HLS output playlist: A manifest FFmpeg generates as part of segmented HLS delivery.
- Playback-service queue: A playlist managed by a separate player or controller that supplies media to FFmpeg.
FFmpeg’s documentation describes the concat filter, concat demuxer and concat protocol as ways to join files. It does not document live rereading of an edited local concat list. Its HLS muxer, meanwhile, updates an output playlist; that is a separate operation and does not make the local input list editable during a run. FFmpeg FAQ · FFmpeg HLS muxer documentation
Can I edit a concat list while FFmpeg is running?
Do not assume that adding, removing or replacing lines in a concat list changes the queue FFmpeg is already processing. The documented concat methods explain how to join input files, not how to hot-reload an active input definition. The safe operational assumption is that the running process continues according to the input it was given at startup.
#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.
That distinction matters for both the concat demuxer and the concat filter. FFmpeg recommends the concat filter when re-encoding is needed; the concat demuxer can be useful when avoiding re-encoding and file-level concatenation is unavailable. These are concatenation choices, not documented live schedulers. The FFmpeg FAQ states of the filter approach: “This operation is recommended if you need to re-encode.” FFmpeg FAQ
How to change upcoming videos without ending the YouTube broadcast
Use one stable output connection and a controllable input
- Keep the output side of the encoder connected to YouTube. The stream key and output configuration belong to the encoder-to-YouTube connection; changing the video queue should happen upstream of that output.
- Replace the fixed input queue with a live-selectable player or controller. It must be able to choose or queue the next file while presenting media to the still-running encoder. A stock concat list is not a documented substitute for that function.
- Check source compatibility before switching. Compare codec, resolution, frame rate, timestamps, audio presence and audio layout across the files. Confirm how the controller handles transitions and whether the encoder needs to normalize or re-encode them.
- Test the handoff in a private or otherwise controlled stream. Verify that both audio and video continue, that the next source starts at the intended point, and that the YouTube connection stays active before relying on it for a public broadcast.
A continuous encoder output does not by itself guarantee a gapless handoff. The cited documentation does not establish seamless switching across arbitrary media with different stream parameters, so validate the actual sources and pipeline you plan to use.
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.
Choose a concatenation method for the files, not for live queue control
- Concat filter: FFmpeg recommends this when re-encoding is needed. It can be appropriate when inputs need processing to fit a common output, but it is not a live queue editor.
- Concat demuxer: A documented option when avoiding re-encoding and file-level concatenation is unavailable, subject to the files and stream parameters being suitable. It does not establish that an edited list will be reloaded mid-run.
- Concat protocol: Another documented concatenation method, not evidence of dynamic scheduling.
For format and usage details, consult the FFmpeg FAQ.
If your setup cannot switch inputs live
Use a controlled restart rather than promise a hot reload. Prepare the revised input definition, then stop and restart the encoder with the updated input while accounting for the interruption in your YouTube broadcast. If an uninterrupted channel is essential, move queue selection into a controller designed to change sources without tearing down the output connection, and test it with your exact files and command before scheduling a live event.
Rank #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.
Does an HLS output playlist let me update the input queue?
No. FFmpeg’s HLS muxer creates segments and an output manifest; this is distinct from a local concat input file. YouTube’s HLS ingest requirements apply when sending a stream using HLS, not when editing an FFmpeg concat list. YouTube Help specifies TS (Transport Stream) segments lasting 1–4 seconds, no byte ranges, a rolling playlist with no more than five outstanding segments, HTTPS POST/PUT, and no encryption other than HTTPS. It also notes that HLS has higher latency than a continuous RTMP stream because it sends segments. YouTube Help: HLS ingestion
If you are using HLS, configure and validate those ingest details separately from your source-queue design. They do not make a local concat input list dynamically reloadable.
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
Troubleshooting a playlist update
The new file does not play
Likely cause: The running FFmpeg process has not adopted the edited concat list; live rereading is not documented. Fix: Use a live-selectable input controller, or restart with the updated list if your current pipeline has no source-switching capability.
The broadcast stays connected but the transition breaks
Likely cause: The source files or handoff behavior are incompatible—for example, their codec, dimensions, frame rate, timestamps or audio layout differ. Fix: Validate the files and controller behavior together, and normalize or re-encode where your pipeline requires it. Do not assume arbitrary sources will switch seamlessly.
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.
The HLS stream has more latency than expected
Likely cause: HLS delivers segments rather than a continuous stream. Fix: Check the YouTube HLS segment and playlist requirements, and account for the higher latency YouTube documents compared with RTMP. This is an ingest-protocol issue, not a concat-list update issue. YouTube Help: HLS ingestion
Or let it run in the cloud
If your goal is a continuously looping YouTube channel rather than managing a live FFmpeg input queue yourself, StreamNeo runs uploaded videos or playlists from the cloud. Upload the video or build a playlist, add your YouTube stream key, and go live; your computer and home connection do not have to stay on.
Quick Recap
- One flat price per slot for any uploaded quality up to 4K 60fps, with no re-encode or quality tiers.
- Automatic recovery if YouTube drops the stream.
- The first day is free, with no card required.
- Monthly: $9.99 per month.
Start your free StreamNeo day.
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.
