Changes to be committed:

- Starkes Komprimieren von png
	new file:   src/Makefiles/Makefile.pngCompress
- Dynamische Bitrate, damit eine max. Dateigröße von 10MB eingehalten wird
	modified:   src/Makefiles/Makefile.vidstabTest
	new file:   src/galleryHelper/getVideoDuration.py
	new file:   src/galleryHelper/getVideoDurationJson.py

homepage/redesign2018/markdownExperiment/src/galleryHelper/getVideoDuration.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+
+import sys
+import subprocess
+
+#ffprobe = 
+
+def getLength(filename):
+	result = subprocess.Popen(
+		["C:\\proggis\\media\\editoren\\ffmpeg-4.0.2-win64-static\\bin\\ffprobe.exe", filename],
+		stdout = subprocess.PIPE, stderr = subprocess.STDOUT)
+#	print( result.stdout.readlines() )
+#	for x in result.stdout.readlines():
+#		print(x)
+	return [x for x in result.stdout.readlines() if b"Duration" in x]
+
+#print( str( getLength(sys.argv[1]) ) )
+getLength(sys.argv[1])

homepage/redesign2018/markdownExperiment/src/galleryHelper/getVideoDurationJson.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+
+#
+# Command line use of 'ffprobe':
+#
+# ffprobe -loglevel quiet -print_format json \
+#         -show_format    -show_streams \
+#         video-file-name.mp4
+#
+# man ffprobe # for more information about ffprobe
+#
+
+import subprocess as sp
+import json
+import sys
+
+
+def probe(vid_file_path):
+    ''' Give a json from ffprobe command line
+
+    @vid_file_path : The absolute (full) path of the video file, string.
+    '''
+    if type(vid_file_path) != str:
+        raise Exception('Gvie ffprobe a full file path of the video')
+        return
+
+    command = ["ffprobe",
+            "-loglevel",  "quiet",
+            "-print_format", "json",
+             "-show_format",
+             "-show_streams",
+             vid_file_path
+             ]
+
+    pipe = sp.Popen(command, stdout=sp.PIPE, stderr=sp.STDOUT)
+    out, err = pipe.communicate()
+    return json.loads(out)
+
+
+def duration(vid_file_path):
+    ''' Video's duration in seconds, return a float number
+    '''
+    _json = probe(vid_file_path)
+
+    if 'format' in _json:
+        if 'duration' in _json['format']:
+            return float(_json['format']['duration'])
+
+    if 'streams' in _json:
+        # commonly stream 0 is the video
+        for s in _json['streams']:
+            if 'duration' in s:
+                return float(s['duration'])
+
+    # if everything didn't happen,
+    # we got here because no single 'return' in the above happen.
+    raise Exception('I found no duration')
+    #return None
+
+
+if __name__ == "__main__":
+#    video_file_path = "/tmp/tt1.mp4"
+    video_file_path = sys.argv[1]
+
+    durationInSec = duration(video_file_path)
+    rateInKbPerSec = (10 * 1024 * 1024 * 8)/( durationInSec * 1000 )
+    #print( duration(video_file_path) )	# 10.008
+    print( int(min(500, rateInKbPerSec)) )