Camera overlay
Camera names and timestamps are rebuilt from the overlay records stored alongside the video.
Free
Open source
Windows and macOS
Convert Blue Iris .bvr recordings to MP4
Keep the camera name, timestamp, variable frame timing and audio. The conversion happens on your computer, so your footage never leaves it.
The Mac download is for Apple silicon. Intel Macs use this one. First-time setup installs FFmpeg from its upstream project. Conversion is offline after that.
- No account
- No uploads
- No telemetry
- GPL licensed
bvr2mp4
Blue Iris recordings, converted locally.
BVR
FRONT-DOOR.20260803_212907.bvr
Choose
MP4
FRONT-DOOR.20260803_212907.mp4
✓ Keep overlay✓ Keep audio
Local conversion
Automatic encoder
Reading BVR and writing MP4...working
input.bvr
output.mp4
A normal video file, without losing the useful bits
Your recording stays recognisable
bvr2mp4 reads the data Blue Iris stores inside the BVR container instead of recording the screen or guessing at a fixed frame rate.
Exact frame timing
Every frame keeps its recorded millisecond timestamp, including variable frame rates and gaps.
Audio included
FLAC and uncompressed PCM tracks are carried into the output and aligned to the video.
Hardware encoding
Windows checks NVIDIA, Intel and AMD encoders, macOS uses VideoToolbox, and either falls back to the CPU.
autoNVENCQSVAMFVideoToolboxx264
Open source, in the useful sense
Inspect what reads your footage
The BVR parser is plain Python. FFmpeg handles the video work. There is no licence server, online activation, analytics SDK or hidden upload path.
Read the converter source →cli.py
# One local conversion
BVR records
├─ video frames + millisecond PTS
├─ overlay text + positions
└─ FLAC / PCM audio
FFmpeg
└─ MP4 + burned overlay + AAC audio
✓ no network requestFrom proprietary recording to ordinary video
Three steps
- 1
Download and extract
Get the ZIP for your machine from GitHub Releases and open the extracted folder.
- 2
Set up FFmpeg once
On Windows,
setup-ffmpeg.cmddownloads FFmpeg from BtbN and verifies the publisher's checksum. On macOS, runbrew install ffmpeg-full. - 3
Choose and convert
Select the BVR file and MP4 destination. The recording itself is never sent anywhere.
Straight answers
Before you download
Does it upload my CCTV footage?
No. The application contains no upload service or telemetry. It reads and writes local files.
Why does my computer show a warning?
The build is not signed with a paid certificate, so Windows shows SmartScreen and macOS reports an unidentified developer. On a Mac, right-click the app and choose Open the first time. GitHub Actions builds each release from the public source.
Is this an official Blue Iris tool?
No. It is an independent personal project and is not affiliated with or endorsed by Perspective Software.
What about macOS and Linux?
macOS has its own application, built for both Apple silicon and Intel. Linux has no packaged build, but the Python command line runs there with any FFmpeg that includes the subtitles filter.
Free. Offline. Open source.