why not learn something and try to do it right?

Signed-off-by: Milan Santosi <milan.santosi@gmail.com>

kiss/ffmpeg_splitter.sh

 #!/bin/bash
 
-# very dirty script to split a video into 15 minutes parts with ten
+# dirty little script to split a video into 15 minutes parts with ten
 # seconds overlap (for upload to youtube)
 
 # USAGE: read comments and adjust where necessary, then:
@@ -15,10 +15,23 @@ bname=${fname%%.*} # the file basename
 ext=${fname#*.}    # the file extension
 
 
-for i in {1..5}  # Naive assumption that no video is longer than
-                 # 5*15=75min. Please adjust!
-do                                                                     
-    ffmpeg -vcodec copy -acodec copy -ss $[i*890 - 890] -t 899.999 -i $1 $bname-part0$i.$ext
-done
+# to avoid async a/v, re-encode with every frame as keyframe
+if 
+    test -f $bname-keyframes.$ext
+then
+    :
+else 
+    ffmpeg -g 1 -i $1 $bname-keyframes.$ext
+fi    
+    
+
+# get length and calculate amount of segments
+let vidlen=$(ffprobe -show_format $1 | grep duration | cut -d "." -f 1 | cut -d "=" -f 2)+1
+let segcount=$vidlen/890
 
 
+# loop until it's done
+for (( i = 1; i <= $segcount; i++))
+do                                                                     
+    ffmpeg -vcodec copy -acodec copy -ss $[i*890 - 890] -t 899.999 -i $bname-keyframes.$ext $bname-part0$i.$ext
+done