JB Thumbnail Preloader Thumbnail Preloader
JB Thumbnail Preloader is a Windows app. You can buy your license right here on your phone; for the download itself, open this page on your Windows PC.

RAW video

BRAW previews in Windows Explorer

For BRAW, Windows shows nothing at all. No image, no hint, just a grey icon and a file name.

Why that hurts in daily work

BRAW folders all look alike. After a shoot day there are dozens of clips with sequential numbers, and the only way to find out what is inside leads through the edit suite or a player. Screening freshly copied cards costs time every single time.

What the preloader does differently

With the Blackmagic RAW runtime present, JB Thumbnail Preloader reads a representative frame from the BRAW clip and puts it in place as a preview. In Explorer a list of numbers becomes a contact sheet where you recognise scenes.

  • Works for entire card folders at once.
  • Also on external drives, where footage usually lives.
  • On NAS and network drives with the Studio plan.

Honest about the limits

The preloader replaces neither a player nor screening software. It answers "what is in this clip" at a glance, not "how does the motion look".

Requirement for BRAW previews

JB Thumbnail Preloader does not include the Blackmagic RAW runtime. To decode a frame from the clip, Blackmagic RAW must already be installed on the computer, for example with DaVinci Resolve. Without that runtime, JB Thumbnail Preloader can only use an embedded preview if the clip contains one. If that is also missing, Explorer shows the file type icon.