How to Sync SRT Files with VR04 Video for OSD Display

OSD Tools

With systems like Walksnail, OSD data is often saved as a separate file that can later be merged with video. The BETAFPV P1 ArtLynk system works differently:

• The Betaflight OSD data is embedded directly inside the recorded MP4 file
• The goggles do not export a separate OSD file
• You can’t simply toggle OSD on/off after recording

This means you need a tool that can extract that embedded data and render it back onto the footage.

A developer created a fork of the Walksnail OSD Tool that supports BETAFPV P1 ArtLynk recordings. It scans the MP4 file, extracts the Betaflight telemetry and OSD data, and overlays it onto the video.

Download links:

• OSD Tool: https://github.com/ksielick/walksnail-osd-tool/releases
• Sneaky FPV Fonts: http://sites.google.com/view/sneaky-fpv/

Drag and drop the MP4 file recorded by your BETAFPV goggles into tool, it will:

1. Scan the video for embedded OSD data
2. Extract telemetry information
3. Detect subtitle (SRT) files if present

The tool requires a Betaflight-compatible font which you also need to download.

1. Download a font pack (e.g., Sneaky FPV fonts)
2. Drag the font file into the application

Use the built-in sliders to position the OSD elements on screen. You can preview the result in real time to match the layout you want — typically similar to what you saw inside your goggles.

When everything looks correct:

1. Click Start Render (bottom-left corner)
2. The tool will generate a new video file
3. The output will have the OSD permanently burned into the footage