stream_in_sync.py: ideas for streaming live two side-by-side syncronized streams

stream_in_sync.py

@@ -0,0 +1,33 @@
+
+from datetime import datetime, timedelta
+
+
+def pipe_stream(racer, start):
+	"""Returns a pipe streaming racer's video, starting from given start timestamp."""
+	# TODO this is basically a specialized version of fast_cut_segments with no end point
+	# that polls for new segments.
+
+
+def sync_stream(racer, start):
+	"""Returns a pipe streaming racer's video, starting from the point they started.
+	Starts searching from given start timestamp.
+	Blocks until start found.
+	"""
+	# TODO send pipe_stream(racer, start) to ffmpeg until blackdetect found,
+	# then return pipe_stream(racer, start + blackdetect)
+
+
+def main(racer1, racer2, start=0):
+	"""
+		start:
+			0: now
+			< 0: seconds ago
+			> 0: unix timestamp
+	"""
+	if start > 0:
+		start = datetime.utcfromtimestamp(start)
+	else:
+		start = datetime.utcnow() + timedelta(seconds=start)
+
+	stream1, stream2 = gevent.Pool.Group().map(lambda r: sync_stream(r, start), [racer1, racer2])
+	# TODO multiplex stream1, stream2 and timer (using drawtext) into one video