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New mode: "equal"

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Thumbnails at specific intervalls
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Findus23 2015-10-31 12:11:06 +01:00
parent 2c8f2ebce5
commit ac91440f1e
1 changed files with 19 additions and 1 deletions
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thumbnail.sh
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@ -32,9 +32,27 @@ then
echo "$(tput setaf 2)using default seconds between keyframes: $(tput setaf 3)$setting$(tput sgr0)"
fi
ffmpeg -y -i $inputfile -vsync 0 -vf select="eq(pict_type\,I)*(isnan(prev_selected_t)+gte(t-prev_selected_t\,$setting))",tile=$tile -frames:v 1 $outputfile
elif [ "$mode" == "equal" ]
then
if [ -z "$setting" ] || (( $setting < 1 ))
then
setting="600" #seconds of video to look at
echo "$(tput setaf 2)only looking at the first $(tput setaf 3)$setting$(tput setaf 2) seconds.$(tput sgr0)"
fi
duration=$(ffprobe -i $inputfile -show_format -v quiet | sed -n 's/duration=//p')
if [ "$setting" -gt "${duration%.*}" ]
then
echo "$(tput setaf 1)video is shorter than $setting seconds$(tput sgr0)"
exit 1
fi
frames=$((${tile/"x"/"*"})) # 3x3 -> 3*3
sec_between=$(python3 -c "print($setting/$frames)")
echo $sec_between
ffmpeg -y -i $inputfile -vsync 0 -vf "fps=1/$sec_between,tile=$tile" -frames:v 1 $outputfile
# alternativ: select every x frame https://ffmpeg.org/ffmpeg-filters.html#select_002c-aselect
else
echo "$(tput setaf 1)invalid mode$(tput sgr0)"
echo "use \"best\" or \"fast\""
echo "use \"best\", \"equal\" or \"fast\""
exit 1
fi