01
What causes most upload failures?
Size above the plan limit, a connection that drops partway, a file the browser cannot read, and a device that went to sleep during the transfer. Size fails immediately, a dropped connection fails partway, an unreadable file fails at the start, and sleep fails at whatever point the screen went off.
02
Where it stopped tells you why
Four causes cover nearly all of them, and each leaves a different clue about where the transfer gave up.
| Stopped | Likely cause | First thing to try |
|---|---|---|
| Immediately | File over the plan limit | Check size against your tier |
| At a few percent | Browser cannot read the file | Export an mp4 and retry |
| Partway, varying each time | Connection dropping | Wired connection, or a supported link |
| Always at the same point | The file itself is damaged there | Re export from the original |
| Near the end, on a phone | Screen locked during transfer | Keep the device awake |
03
Diagnosing by where it stops
If an upload fails immediately, the file may be too large or in a format the browser cannot read. If it stops partway, the connection or device probably interrupted it. If it reaches the end and then fails, processing may have had trouble with the file. Noting where it stopped narrows the cause quickly.
Take a screenshot of any error message.
04
Keeping the device awake
Phones and laptops may sleep or pause background transfers to save power. Keep the screen on, connect to power and disable sleep during large uploads.
Keep the browser tab or app open until it finishes.
05
Stabilising the connection
Use a stable Wi-Fi network or a wired connection. Avoid switching networks mid-upload, such as leaving Wi-Fi range. Pause other heavy internet use during the transfer.
Uploading at quieter times can help.
06
Fixing unreadable files
If a file will not upload at all, check its format with a media information tool. Converting it to a widely supported format usually solves the problem.
Files recorded with unusual settings are more likely to fail.
07
Reducing size
Trimming dead time or exporting a copy at a lower bitrate can bring a file under the limit and make the upload faster and more reliable.
Keep the original safely.
08
When it keeps failing
Try a different browser or device, and test with a short file to see whether the problem is the file or the setup.
If a short test works, the original file is the likely cause.
09
Get the file in on the first try
- Note where it stopped. Immediately, partway, or at the end. That alone narrows it to one cause.
- Check the size against your plan. The free video allows two gigabytes, and the ceiling rises with each paid tier to twelve.
- Keep the device awake. A sleeping laptop or a phone that locks will interrupt a long transfer.
Send one video and see it through.
Questions people ask
- What are the size limits?
- Two gigabytes on the free video, four on Lite 10, eight on Lite 30, and twelve on Lite 50.
- Does a longer video always mean a bigger file?
- Not necessarily. A short high quality recording can be larger than a long compressed one, so length and size are worth checking separately.
- Can I upload from a phone?
- Yes, and it is worth keeping the screen on. Phones interrupt background transfers more aggressively than laptops do.
- Would a link be more reliable?
- Often, since a supported link avoids the transfer entirely. Seven sources can be pasted rather than uploaded.
- What if it fails every time?
- Try a shorter section of the same recording. If that succeeds, the issue is size or duration rather than the file itself.