A compressed video can get larger after conversion because the new export may encode more data per second—or more image data—than the original. Compare the files’ duration, resolution, frame rate, video and audio codecs, and bitrates before changing settings. Also clarify whether you mean a prerecorded upload or a live stream: YouTube has separate recommendations for those workflows.
Why a compressed video can grow after conversion
“Compressed” does not mean that every later export will be smaller. A converter or editor can re-encode an already compressed source using a higher bitrate, a higher resolution or frame rate, or an encoder setting that is less efficient for that footage. The output can therefore contain more data even if it looks similar.
Duration and audio matter too. A longer export has more time in which to store video and audio data; a higher audio bitrate can add data even when the picture settings are unchanged. Without the source and output files or their settings, there is no reliable way to name the cause in a particular case.
Compare the source and output before adjusting anything
Open each file’s media details in your editing program or a media-inspection utility and compare these properties:
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →#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.
- Duration: Check that the converted file is not longer because of added material, padding, or a different trim.
- Resolution: A larger frame, such as converting 1080p footage to 4K, stores more picture information per frame. Upscaling does not restore detail that was absent from the source.
- Frame rate: More frames per second can increase the amount of encoded video data. For an upload, YouTube advises matching the recording’s frame rate.
- Video codec and encoder settings: Different codecs, encoders, and presets can produce different file sizes at similar visual quality. The codec name alone does not identify every setting used.
- Video bitrate or quality target: A fixed bitrate, variable-bitrate target, or quality-based mode can produce a different output size. If the export is set to a higher data rate than the source, it may grow.
- Audio codec and bitrate: Compare these separately from the video. Audio contributes to total size, but it is not determined by the video resolution.
As a rough diagnostic, when average bitrate is known, total size is driven by the combined audio and video data rates over the file’s duration, plus container overhead. So a larger file does not by itself prove that picture quality improved—or that the conversion failed.
Choose settings for a prerecorded YouTube upload
If you are uploading a finished recording, follow YouTube’s recommended upload encoding settings, not its live-ingestion bitrate table. YouTube recommends an MP4 container and H.264 video, variable bitrate, and the same frame rate as the recording. It says no bitrate limit is required and provides reference bitrates rather than a guaranteed file size.
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.
For SDR uploads, YouTube’s current recommendations include these video bitrates:
| Resolution | 24, 25, or 30 fps | 48, 50, or 60 fps |
|---|---|---|
| 720p | 5 Mbps | 7.5 Mbps |
| 1080p | 8 Mbps | 12 Mbps |
| 2160p (4K) | 35–45 Mbps | 53–68 Mbps |
These are YouTube’s recommended SDR upload bitrates, not a required minimum, a prediction of the resulting file size, or an instruction to raise the bitrate of a lower-bitrate source. YouTube’s upload guide lists stereo audio at 384 kbps and notes that audio playback bitrate is not related to video resolution. Actual file size also depends on duration and the selected encoding settings.
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.
A practical export check
- In your editor, choose the source’s actual resolution and frame rate unless you have a specific reason to change them.
- For a conventional YouTube upload, select MP4 with H.264 video and AAC-LC audio if your editor offers those options. YouTube’s upload troubleshooting guidance also points to H.264, automatic data rate and key frames, common supported frame rates, AAC-LC audio, and choosing the original video size.
- Use a variable-bitrate or quality-based export where available, rather than raising a fixed bitrate without a quality reason. YouTube’s reference rates above can help you choose a sensible target for SDR footage, but they do not guarantee a particular size.
- Export a short representative section first if you need to compare quality and size. Check its output properties against the source before exporting the full recording.
Do not use live-stream bitrates as upload targets
A prerecorded file upload and a live encoder sending video to YouTube are different workflows. YouTube’s live encoder settings and bitrate recommendations recommend constant bitrate (CBR) for live ingestion and set bitrate guidance by codec, resolution, and frame rate. For example, the current H.264 recommendations are 14 Mbps for 4K/30 and 50 Mbps for 4K/60. Those are live-ingestion figures; they are not settings to apply to a prerecorded upload simply because you plan to show that video during a stream.
Common causes and fixes
| What you find | Likely explanation | What to try |
|---|---|---|
| Output bitrate is higher than the source | The export target or quality setting writes more data per second. | Use a more appropriate variable-bitrate or quality target; do not increase the source’s bitrate without a quality reason. |
| Output resolution or frame rate is higher | The export is encoding more pixels or frames. | Match the source unless the change is intentional and supported by the footage. |
| Output is longer | The conversion may include extra material or use different in/out points. | Check timeline boundaries, trims, and duration. |
| Picture settings look similar, but size still rises | A different codec, encoder, or preset may be less efficient for this footage; audio settings may also differ. | Compare codec, encoder mode, audio codec, and audio bitrate, then make one change at a time. |
| File size seems inconsistent with the video bitrate | Video bitrate is only part of the total; audio, duration, and container overhead also contribute. | Compare total duration and both audio and video settings, not just resolution or the video codec label. |
| You are setting a live encoder from upload guidance | Upload and live-ingestion recommendations describe different workflows. | Use YouTube’s live settings for an actual live feed and its upload guidance for a finished file. |
Or let it run in the cloud
If your aim is to keep a YouTube channel showing prerecorded videos continuously, that is separate from fixing a larger export: StreamNeo loops videos you upload, but it does not convert them or go live from a camera. Upload a recording or build a playlist, add your YouTube stream key once, and go live. The stream continues from the cloud, so nothing has to stay on at home. Each slot streams the uploaded quality up to 4K 60fps at one flat price, with no re-encode or quality tiers; StreamNeo automatically recovers if YouTube drops the stream. The first day is free with no card, one free day per account. Monthly service is $9.99 per month. See StreamNeo or start the free first day.
Quick Recap
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.
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
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.
