Differences

This shows you the differences between two versions of the page.

--- personal:portfolio:vcat-script [2019/01/02 14:09]
antonello created
+++ personal:portfolio:vcat-script [2019/01/02 14:52] (current)
antonello Allowed decimal of seconds
@@ Line 1: / Line 1: @@
 ====== Vcat script: cut & merge video segments ======
-A Python script that wraps [[https://zulko.github.io/moviepy/|moviepy]] (that in turn wraps `ffmpeg`) to allow mixing and merging segments from other videos in a final video.
+A Python script that wraps [[https://zulko.github.io/moviepy/|moviepy]] (that in turn wraps ''ffmpeg'') to allow mixing and merging segments from other videos in a final video.
 Tested with mp4 (h.264/mp3) videos all with the same resolution.
-Use it with `vcat -i inputfile1,inputfile2[start-end],... -o <outputfile>`
+Use it with ''vcat -i inputfile1,inputfile2[start-end],... -o <outputfile>''
+<code python>
+#!/usr/bin/python3
+import sys, getopt, re
+def printerror(errormsg):
+  print("*** vcat - concatenate video segments using moviepy ***\n")
+  print("ERROR:", errormsg,"\n")
+  print("Usage: vcat -i inputfile1,inputfile2[start-end],... -o <outputfile>")
+  print("Optional start and end points should be given in seconds. If files have spaces, they should be quoted (e.g. \"input file.mp4[5-30]\").")
+try:
+ from moviepy.editor import VideoFileClip, concatenate_videoclips
+except ImportError:
+ printerror("You don't seem to have moviepy installed. Install it with `pip install moviepy`.")
+ exit(1)
+def main(argv):
+    inputfiles_arg = ''
+    outputfile = ''
+    try:
+        opts, args = getopt.getopt(argv,"hi:o:",["input=","output="])
+    except getopt.GetoptError as err:
+        printerror(str(err))
+        sys.exit(2)
+    for opt, arg in opts:
+        if opt == '-h':
+            printerror("")
+            sys.exit()
+        elif opt in ("-i", "--input"):
+            inputfiles_arg = arg
+        elif opt in ("-o", "--output"):
+            outputfile = arg
+    if outputfile =='':
+        printerror("Output file not specified")
+    iFiles = inputfiles_arg.split(',')
+    clips=[]
+    for iFile in iFiles:
+        subclip = re.search(r"\[([0-9\-\.]+)\]", iFile)
+        if subclip is None:
+            clips.append(VideoFileClip(iFile))
+        else:
+            dims = subclip.group(1).split('-')
+            if len(dims) != 2:
+                printerror("If a specific segment of a file is specified, this should be given as [startseconds-endseconds]")
+            iFile = iFile.replace("["+subclip.group(1)+"]",'')
+            clips.append(VideoFileClip(iFile).subclip(float(dims[0]),float(dims[1])))
+    f = concatenate_videoclips(clips)
+    f.write_videofile(outputfile)
+if __name__ == "__main__":
+   main(sys.argv[1:])
-  #!/usr/bin/python3
+</code>
-  import sys, getopt, re
-  def printerror(errormsg):
-    print("*** vcat - concatenate video segments using moviepy ***\n")
-    print("ERROR:", errormsg,"\n")
-    print("Usage: vcat -i inputfile1,inputfile2[start-end],... -o <outputfile>")
-    print("Optional start and end points should be given in seconds. If files have spaces, they should be quoted (e.g. \"input file.mp4[5-30]\").")
-  try:
-   from moviepy.editor import VideoFileClip, concatenate_videoclips
-  except ImportError:
-   printerror("You don't seem to have moviepy installed. Install it with `pip install moviepy`.")
-   exit(1)
-  def main(argv):
-      inputfiles_arg = ''
-      outputfile = ''
-      try:
-          opts, args = getopt.getopt(argv,"hi:o:",["input=","output="])
-      except getopt.GetoptError as err:
-          printerror(str(err))
-          sys.exit(2)
-      for opt, arg in opts:
-          if opt == '-h':
-              printerror("")
-              sys.exit()
-          elif opt in ("-i", "--input"):
-              inputfiles_arg = arg
-          elif opt in ("-o", "--output"):
-              outputfile = arg
-      if outputfile =='':
-          printerror("Output file not specified")
-      iFiles = inputfiles_arg.split(',')
-      clips=[]
-      for iFile in iFiles:
-          subclip = re.search(r"\[([0-9\-]+)\]", iFile)
-          if subclip is None:
-              clips.append(VideoFileClip(iFile))
-          else:
-              dims = subclip.group(1).split('-')
-              if len(dims) != 2:
-                  printerror("If a specific segment of a file is specified, this should be given as [startseconds-endseconds]")
-              iFile = iFile.replace("["+subclip.group(1)+"]",'')
-              clips.append(VideoFileClip(iFile).subclip(int(dims[0]),int(dims[1])))
-      f = concatenate_videoclips(clips)
-      f.write_videofile(outputfile)