RSV Rescue

Fix Sony .RSV files

Rebuild recordings that were cut off by a dead battery, a full card or an overheat shutdown. Free preview. Your footage never leaves your computer. Nothing is uploaded.

How it works
  1. Drop RSV

    Drop your .RSV file onto the page. Your browser reads the camera’s own settings, picture and sound from it. Nothing is uploaded.

  2. Preview

    Watch and hear the first 15 seconds of your recovered clip, free, before you decide.

  3. Payment

    Happy with it? Pay once for that file: £15, £25 or £39 by size. Not happy? Click No thanks and nothing is charged.

  4. Fix video

    The full repair saves straight to your computer, with picture and sound in sync. Fixing the same file again is free.

Where Sony keeps them
PRIVATE/M4ROOT/CLIP/C0042.RSV

Copy the whole card to your computer before trying anything, and don’t format it or record over it until you’ve got your clip back. Then choose the .RSV here. Everything needed to rebuild it is read from the .RSV itself.

Works with
  • XAVC S, XAVC HS and XAVC S-I (H.264 and H.265, 8- or 10-bit) with LPCM audio
  • Just the .RSV: camera settings, picture, sound and timing all come from the file itself
  • Clips where the camera changed settings partway through
Cameras
a7S III

Tested on the a7S III. Built for any Sony body recording XAVC S, XAVC HS or XAVC S-I, such as the FX3, FX30, FX6, a7 IV, a7R V, a7C II and a6700. The free preview tells you in seconds whether your clip can be fixed.

Won’t help with
  • Clips whose data was overwritten or never reached the card
  • .RSV files that show 0 bytes: the camera never wrote the recording into them
  • X-OCN and ProRes RAW recordings
FAQ
What is an .RSV file?

While a Sony camera records, it writes the clip to the card as a temporary .RSV file and turns it into a normal .MP4 when you stop. If the battery dies, the card fills up or the camera overheats, that last step never happens and you’re left with an .RSV that won’t open. The picture and sound are usually all still inside it.

Is my footage uploaded?

No. The repair runs entirely in your browser on your own computer. Your video never leaves it. We only receive a short fingerprint of the file (so you never pay twice for the same clip) and the details of your payment.

How much does it cost?

The preview is free. Saving the full recovery is a one-time payment per file, by its size: £15 under 4 GB, £25 for 4–20 GB and £39 for 20 GB and over, shown on the button in your own currency before you commit. Fixing the same file again, later or on another computer, is free. Pricing

What if the repair doesn’t work?

You see the preview before paying, so you know it works. If a paid repair fails, contact us with the file name and you get your money back. Refunds

Will picture and sound be in sync?

Yes, guaranteed. Every sound block is placed at the moment its frames start. If part of the card was damaged, the last good picture is held and silence fills the lost sound, so everything after it stays in sync. If your repaired clip is ever out of sync, you get your money back.

What do I get?

A normal QuickTime .MOV file with the original picture and sound, untouched (nothing is re-encoded). It saves straight to your Downloads folder and opens in Premiere Pro, Final Cut Pro, DaVinci Resolve, QuickTime and VLC.

Which browsers work?

Chrome, Edge or Safari on a Mac or Windows computer. The preview of H.265 clips needs a browser that can play H.265; the repair itself works either way. Phones and tablets can’t handle files this large.

Test checkout

Test mode stands in for the real payment page. Choose what happens.