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Record videos in 720p

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This commit is contained in:
Thomas Nordquist
2019-02-20 15:40:35 +01:00
parent 60a06d8c82
commit 2efc8f4dda
2 changed files with 8 additions and 6 deletions
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12
scripts/prepareVideo.sh
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@@ -1,5 +1,7 @@
#!/bin/bash
ffmpeg -s:v 1024x700 -r 20 -f rawvideo -pix_fmt yuv420p -i qrawvideorgb24.yuv app2.mp4
DIMENSIONS="1280x720"
ffmpeg -s:v $DIMENSIONS -r 20 -f rawvideo -pix_fmt yuv420p -i qrawvideorgb24.yuv app2.mp4
# The video starts with a few blank frames, we want to know when the stop
ffprobe -f lavfi -i "movie=app2.mp4,blackdetect[out0]" -show_entries tags=lavfi.black_start,lavfi.black_end -of default=nw=1 -v quiet > ffmpeg_info
@@ -9,16 +11,16 @@ END_OF_BLACK=`cat ffmpeg_info | grep end | head -n1 | cut -d'=' -f2`
END_OF_BLACK=`awk "BEGIN {print $END_OF_BLACK+0.8; exit}"`
# Trim black frames at start
ffmpeg -s:v 1024x700 -r 20 -f rawvideo -pix_fmt yuv420p -i qrawvideorgb24.yuv -ss $END_OF_BLACK app.mp4
ffmpeg -s:v $DIMENSIONS -r 20 -f rawvideo -pix_fmt yuv420p -i qrawvideorgb24.yuv -ss $END_OF_BLACK app.mp4
# Generate gif palette
ffmpeg -y -s:v 1024x700 -r 20 -f rawvideo -pix_fmt yuv420p -i qrawvideorgb24.yuv -vf fps=10,scale=1024:-1:flags=lanczos,palettegen palette1024.png
ffmpeg -y -s:v $DIMENSIONS -r 20 -f rawvideo -pix_fmt yuv420p -i qrawvideorgb24.yuv -vf fps=10,scale=1024:-1:flags=lanczos,palettegen palette1024.png
# Create gif
ffmpeg -s:v 1024x700 -r 20 -f rawvideo -pix_fmt yuv420p -i qrawvideorgb24.yuv -i palette1024.png -ss $END_OF_BLACK -filter_complex "fps=10,scale=1024:-1:flags=lanczos[x];[x][1:v]paletteuse" app1024.gif
ffmpeg -s:v $DIMENSIONS -r 20 -f rawvideo -pix_fmt yuv420p -i qrawvideorgb24.yuv -i palette1024.png -ss $END_OF_BLACK -filter_complex "fps=10,scale=1024:-1:flags=lanczos[x];[x][1:v]paletteuse" app720.gif
# Clean up
rm ffmpeg_info palette*.png qrawvideorgb24.yuv
mv app.mp4 ui-test.mp4
mv app1024.gif ui-test.gif
mv app720.gif ui-test.gif