New post with some pictures :)

main-site/scripts/slow-mo-video.sh

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+#!/bin/bash
+
+set -e
+
+if [ -z "$3" ]; then
+	cat <<- EOF
+	Usage: slow-mo.sh /input.mp4 /outputm.mp4 RATE
+	Alternative flags( environment variables ):
+	    REMOVE_AUDIO
+		    When this is set the audio output is disabled
+		SLOW_RATE
+		    2.0 => Half speed
+            3.0 => 3x slower
+            Formula is 1 / RATE => OutputRate
+	EOF
+	exit 0
+fi
+
+# If this gets set then we do not create the first clip with audio
+# Default to having no audio
+if [ ! -z "$REMOVE_AUDIO" ]; then
+	echo "Audio: DISABLED"
+	FFMPEG_COPY="-c copy -an"
+else
+	echo "Audio: ENABLED"
+	FFMPEG_COPY="-c:v copy"
+fi
+
+# Aliasing input variables
+input="$1"
+output="$2"
+
+SLOW_RATE=2.0
+LOG="-loglevel error"
+
+ffmpeg $LOG -y -i "$input" -vf "setpts=$SLOW_RATE*PTS" "$output"
+

main-site/scripts/trim-video.sh

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+#!/bin/bash
+
+set -e
+
+if [ -z "$3" ]; then
+	cat <<- EOF
+    Usage: trim.sh /path/to/file.mp4 HH:MM:SS[.ms] HH:MM:SS[.ms] [/path/to/output.mp4]
+    NOTE:
+        .ms (miliseconds) are optional and default .000
+    Alternate flags ( environment variables ):
+        REMOVE_AUDIO
+            When this is set audio output is disabled
+	EOF
+    exit 0
+fi
+
+input="$1"
+start="$2"
+end="$3"
+
+# Figure out the output file name
+out="$(dirname $input)/$(basename -s .mp4 $input).slow.mp4"
+if [ ! -z "$4" ]; then
+    out="$4"
+fi
+
+# Figure out the copy options for audio
+if [ ! -z "$REMOVE_AUDIO" ]; then
+	echo "Audio: DISABLED"
+	COPY_OPT="-c copy -an"
+else
+	echo "Audio: ENABLED"
+	COPY_OPT="-c:v copy"
+fi
+
+LOG="-loglevel error"
+
+echo Trimming video
+ffmpeg $LOG -y -i "$input" -ss "$start" -to "$end" $COPY_OPT "$out"
+
+echo File here $(pwd)
+ls -la "$out"