Generate Hellworld Dispatch episode

gen_hwd.sh

#!/bin/bash
# Generate Hellworld Dispatch episode
EP=$1

# Height of the video frames we tell ffmpeg to generate. We cut off bottom half to make mountains.
WAVESHEIGHT=512

# lol if u don't have an NVIDIA card remove prime-run and the nvidia wankery
NVIDIA_ARGS='-vsync 0 -hwaccel cuda -hwaccel_output_format cuda'
NVIDIA_RUNNER=prime-run
$NVIDIA_RUNNER ffmpeg $NVIDIA_ARGS -y -i ep$EP.flac -loop 1 -i ep$EP-title.png -filter_complex \
 "[0:a]showwaves=s=1920x${WAVESHEIGHT}:mode=cline:colors=#a1c398[waves]; \
  [1:v]scale=1920:1080[bg]; \
  [bg][waves]overlay=shortest=1:y="$((1080-($WAVESHEIGHT/2)))":format=auto,format=yuv420p" \
 -map 0:a -c:v h264_nvenc -preset fast -b:v 1M -c:a aac -b:a 192k ep$EP.mkv