bc5

.bc5 — Blackmagic RAW Cache File

Blackmagic Design · 2018

Developer

Blackmagic Design

Key Features

Stores processed video frames from BRAW footage.
Aims to accelerate playback and editing performance.
Used as an intermediate cache by Blackmagic software.
Optimized for fast read access during post-production.

Best For

Users of Blackmagic cameras and DaVinci Resolve.
Optimizing editing performance for RAW video.
Reducing latency during real-time video processing.
Maintaining a smooth editing experience with high-bitrate footage.

Less Ideal For

Archiving final video projects (use dedicated video formats).
Sharing raw footage with editors not using compatible software.
Long-term storage without the original BRAW files.
Use outside of the Blackmagic ecosystem.

Common Use Cases

Speeding up playback of Blackmagic RAW video in DaVinci Resolve.
Caching frames during complex color grading sessions.
Providing faster access to visual effects previews.
Reducing the computational load when working with high-resolution BRAW files.

How to Open It

Open the project containing the .bc5 files in Blackmagic DaVinci Resolve.
If the files are automatically generated, they will be used by Resolve during playback.
Do not attempt to open .bc5 files directly with standard media players as they are proprietary cache files.

What is a .bc5 file?

The .bc5 file extension is associated with Blackmagic Design's RAW video codec, specifically used for caching recorded footage. These files store processed frames from the Blackmagic RAW (BRAW) format, acting as an intermediate cache to speed up playback and editing. When you record using a Blackmagic camera and select the RAW option, the camera or editing software might generate these .bc5 files to store a more accessible version of the high-resolution video data. This helps in achieving smoother performance during post-production, especially when working with complex visual effects or color grading.

Programs That Open .bc5 Files

Platform	Program
Windows	DaVinci Resolve	Free	Official
macOS	DaVinci Resolve	Free	Official
Linux	DaVinci Resolve	Free	Official

How to Convert .bc5 Files

Format	Method
.MOV	DaVinci Resolve export
.MP4	DaVinci Resolve export

Common Problems with .bc5 Files

⚠️ Files not appearing or playing correctly.

Ensure you are using the latest version of DaVinci Resolve and that the cache settings are correctly configured. Sometimes deleting and regenerating the cache can resolve issues.

⚠️ Large file sizes.

.bc5 files are cache files and can consume significant disk space. Manage your cache by clearing it when not needed or by configuring DaVinci Resolve to use a different storage location.

Frequently Asked Questions

Can I open a .bc5 file with a standard video player?▼

No, .bc5 files are proprietary cache files for Blackmagic software and cannot be opened or played by standard media players like VLC or Windows Media Player.

Is a .bc5 file the same as a Blackmagic RAW (.braw) file?▼

No, a .bc5 file is a cached, processed version of a .braw file, optimized for editing performance. The original .braw file contains the unprocessed sensor data.

Should I delete .bc5 files?▼

You can safely delete .bc5 files if you need disk space, as they are cache files. The software will regenerate them when needed. However, deleting them will temporarily reduce editing performance until new cache files are built.

Technical Details

BC5 files are essentially compressed, cached versions of frames captured in the Blackmagic RAW (BRAW) format. They are designed for rapid access during editing workflows. The underlying structure allows for efficient decompression and display of video data, enabling smoother playback and interaction with the footage, particularly within Blackmagic's DaVinci Resolve software.

Did You Know?

The '.bc' prefix likely stands for 'Blackmagic Cache'.

These files are crucial for maintaining smooth real-time playback of high-resolution BRAW footage within DaVinci Resolve.

Security Information

As a proprietary cache file format, .bc5 files are generally safe. However, like any file, avoid opening them from untrusted sources, although direct execution is not possible as they require specific software context.