• https://github.com/fmndantas/musicsheet-video-maker/blob/master/test/AcceptanceTests/AcceptanceTestsBase.cs#L19

Suggested processing steps are

• for now, final video resolution will be fixed in 1920x1080 (full hd)
• export pdf with 48:9 ratio (width:height) regarding to page layout
• cut original video and scale it to 1920x1080
• make musicsheet video with resolution 1920x360 (ratio 48:9)
• overlay cut video with musicsheet video

Ffmpeg commands

Cut

ffmpeg -ss 00:01:42.093 -i video_to_be_trimmed.mp4 -t 00:02:28.215 -c:v copy -c:a copy trimmed_video.mp4

Overlay

ffmpeg -y -i main.mp4 -i overlay.mp4 -filter_complex 'overlay=0:main_h-overlay_h' output.mp4

Scale

ffmpeg -y -i video_to_be_scaled.mp4 -vf scale=1920:1080,setsar=1:1 scaled_video.mp4