youtube clipper first version

onlineTraining/clips.json

@@ -0,0 +1,8 @@
+[
+{
+	"source": "https://www.youtube.com/embed/zDj1Yf4d07I",
+	"target": "taiso-sumo.webm",
+	"from": "03.103",
+	"to": "20.804"
+}
+]

onlineTraining/yt-clipper.py

@@ -0,0 +1,30 @@
+#! /usr/bin/env python3
+
+import youtube_dl
+import json
+import ffmpeg
+
+jsonFileName = "clips.json"
+
+clipDict = {}
+with open(jsonFileName) as jf:
+	clipDict = json.load(jf)
+
+ydl_opts = {"outtmpl": "%(id)s"}
+
+for clip in clipDict:
+	infoDict = None
+	with youtube_dl.YoutubeDL(ydl_opts) as ydl:
+		infoDict = ydl.extract_info(clip['source'], download=False)
+		ydl.download([clip['source']])
+	
+	if infoDict is not None:
+		stream = ffmpeg.input(
+			infoDict['webpage_url_basename']+"."+infoDict['ext'], 
+			ss=clip['from'], 
+			to=clip['to'], 
+		)
+		stream = ffmpeg.filter(stream, "scale", height="480", width="-2" )
+		stream = ffmpeg.output(stream, clip['target'], vcodec='vp9', **{"an":None, "y":None})
+		ffmpeg.run(stream)
+