#!/bin/bash

for videoFile in "$@"
do
    echo "Extracting gpx for $videoFile"
   ./gopro-telemetry-exporter --input $videoFile --output "${videoFile%.*}.gpx" --GPS5Fix 3 --preset gpx --groupTimes 200
   gpsbabel -i gpx -f "${videoFile%.*}.gpx" -x track,speed -o subrip -F - | grep -v Lat > "${videoFile%.*}.srt"
   ffmpeg -i "${videoFile%.*}.srt" "${videoFile%.*}.ass"
   sed -i 's/^Style: .*/Style: Default,SquareFont,12,\&Hffffff,\&Hffffff,\&H0,\&H0,0,0,0,0,100,100,0,0,1,1,0,1,10,10,10,0/' "${videoFile%.*}.ass"
   ffmpeg -i $videoFile -vcodec h264_nvenc -vf subtitles="${videoFile%.*}.ass" -preset bd -b:v 20M "${videoFile%.*}.with_speed_overlay.mp4"
done