map2gpx

A command-line tool to convert .MAP GPS log files from SHOW-ME dashcams (AMBA format) to standard GPX format.

About

SHOW-ME dashcams store GPS tracks in a proprietary .MAP binary format alongside video files. This tool decodes and converts them to GPX, which can be used with mapping software, Google Earth, or video geotagging tools.

MAP File Format

The AMBA MAP format uses:

• TT markers as record separators (251 bytes apart)
• XOR encoding (key: 0x9A)
• BCD-encoded timestamps and coordinates
• NMEA-style coordinate format (ddmm.mmmm)

Installation

go install github.com/user/map2gpx/cmd/map2gpx@latest

Or build from source:

go build -o map2gpx ./cmd/map2gpx.go

Usage

map2gpx input.MAP output.gpx

Example

$ map2gpx AMBA0004.MAP track.gpx
Done. 3027 track points written

Output:

<?xml version="1.0" encoding="UTF-8"?>
<gpx version="1.1" creator="showme-map-converter" xmlns="http://www.topografix.com/GPX/1/1">
<trk><trkseg>
<trkpt lat="56.8102033" lon="59.5341667"><time>2016-01-01T12:34:56Z</time></trkpt>
<trkpt lat="56.8102350" lon="59.5338833"><time>2016-01-01T12:34:57Z</time></trkpt>
...
</trkseg></trk></gpx>