Added bash script for video transcoding

Lze nechat pravidelně  spouštět na serveru. Vyžaduje ffmpeg.

videos/transcode.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+if [[ ! -f "ffmpeg2pass-0.log" ]]; then
+    videoToConvert=$(ls -tr | grep -E '^.{4}\.' | grep -v xml | head -1)
+    if [ ! -z "$videoToConvert" ]; then
+
+        nameWithoutExtension=$(echo $videoToConvert | sed 's/\..*//')
+
+        ffmpeg -i $videoToConvert -c:v libvpx-vp9 -b:v 0 -crf 10 -pass 1 -an -f null /dev/null && \
+        ffmpeg -i $videoToConvert -c:v libvpx-vp9 -b:v 0 -crf 10 -pass 2 -c:a libopus transcoding-$nameWithoutExtension.webm
+
+        mv transcoding-$nameWithoutExtension.webm c$nameWithoutExtension.webm
+
+        editedXML=$(sed 's/\(<video src="\)\(.\{4\}.\{2,5\}\)\(">\)/\1c'$nameWithoutExtension'.webm\3/' $nameWithoutExtension.xml)
+        echo $editedXML > $nameWithoutExtension.xml
+
+        rm $videoToConvert
+        rm ffmpeg2pass-0.log
+    fi
+fi