Record video straight to cloud storage while you are still recording

Why photo-library sync misses the footage that matters most, and what to use instead.

Automatic cloud backup sounds like it solves the problem of losing footage. For long video it usually does not, because most backup treats a recording as one file that cannot upload until you stop. This page explains why, and how uploading during the recording works. Written by the developer of Witness Camera, so read it with that in mind; where another approach is better, it says so.

Short answer. Photo-library sync normally treats a recording in progress as one unfinished file and waits until you stop, often also waiting for Wi-Fi or a charged battery. A twelve-minute video uploads nothing at minute eleven. Witness records in pieces of about 15 seconds, finalises each as a complete file and uploads it straight away to the Google Drive, Dropbox, Nextcloud or WebDAV account you connected, using a background transfer so uploads continue if the app is suspended or the phone is locked. Pieces stay on the phone until your storage confirms them, and failed uploads retry automatically.

The limitation of ordinary backup

iCloud and Google Photos sync were built for convenience. They commonly wait for Wi-Fi, hold off on low battery and, most importantly, do not upload a file that is still being written. So the minutes just before a phone is lost are the ones still sitting on it.

How uploading during recording works in Witness

Pieces of about 15 seconds, each finalised as a complete, independently playable file the moment it ends.
Upload starts immediately, over cellular or Wi-Fi, using a background transfer session so it continues if the app is suspended or the phone is locked.
Nothing is deleted from the phone until your storage confirms receipt. A failed upload retries with exponential backoff, and the queue flushes when connectivity returns.
Retries are safe. A retry after a partial failure lands on the same destination file, not a duplicate.
A stand-in on bad networks. If the queue falls behind, Witness sends a small low-resolution copy of each new piece first, then the full file replaces it. See recording on a weak connection.

Where it can go

Google Drive, Dropbox, Nextcloud or any WebDAV server. Nothing uploads until you connect one, so set it up and test it first. Footage goes from your phone to your own account. There is no Witness server in the middle.

What it cannot do

The piece being recorded and queued pieces are still on the phone, so a seized phone can lose the last few seconds or whatever had not finished uploading.
Very high-quality settings upload slower. 4K can outrun a mobile connection, and ProRes and Mastering never upload.
Your storage provider is a third party, and footage there is reachable by legal process served on them.

Questions

Why doesn't iCloud or Google Photos upload my video while I record?

They treat a recording in progress as one unfinished file and wait until you stop, often also waiting for Wi-Fi or enough battery. The footage just before a phone is lost is the footage still on it.

How often does Witness upload?

Roughly every 15 seconds, as each piece is finalised, to Google Drive, Dropbox, Nextcloud or WebDAV.

What if the connection drops?

Pieces stay on the phone until your storage confirms them, retry automatically and flush when the connection returns.

Does anyone else see my footage?

No. It goes from your phone to the account you connected. Witness has no server and no account system.

Try it free

The free app includes this. Set it up and test it before you need it.

Get Witness Camera for Free Get it on Google Play

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Written on 27 October 2026. Features and prices change. This is not legal advice.