I am trying to stream and save video from Raspberry Pi Camera. I found code which provide streaming to HTML page but when I write output stream to a file I am getting MJPEG file which size is increasing by the time but when I watch it, I can see same image from camera for the whole time. I guess it captures just first image and then it is stuck or replicated through the whole video. I tried to write bytes when write method is called or when whole frame is complete but it resolves in same problem.
Here is the code. The part inside StreamingOutput -> self.file.write(self.frame) is added by me and all things about file.
(EDIT) I will be glad for any working solution not just Python.
Thank you.
# Web streaming example
# Source code from the official PiCamera package
# http://picamera.readthedocs.io/en/latest/recipes2.html#web-streaming
import io
import picamera
import logging
import socketserver
from threading import Condition
from http import server
PAGE="""\
<html>
<head>
<title>Raspberry Pi - Surveillance Camera</title>
</head>
<body>
<center><h1>Raspberry Pi - Surveillance Camera</h1></center>
<center><img src="stream.mjpg" width="90%" height=90%"></center>
</body>
</html>
"""
class StreamingOutput(object):
def __init__(self):
self.frame = None
self.buffer = io.BytesIO()
self.condition = Condition()
self.file = None
def write(self, buf):
if buf.startswith(b'\xff\xd8'):
# New frame, copy the existing buffer's content and notify all
# clients it's available
self.buffer.truncate()
with self.condition:
self.frame = self.buffer.getvalue()
self.file.write(self.frame)
self.condition.notify_all()
self.buffer.seek(0)
#self.file.write(buf)
return self.buffer.write(buf)
class StreamingHandler(server.BaseHTTPRequestHandler):
def do_GET(self):
if self.path == '/':
self.send_response(301)
self.send_header('Location', '/index.html')
self.end_headers()
elif self.path == '/index.html':
content = PAGE.encode('utf-8')
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.send_header('Content-Length', len(content))
self.end_headers()
self.wfile.write(content)
elif self.path == '/stream.mjpg':
self.send_response(200)
self.send_header('Age', 0)
self.send_header('Cache-Control', 'no-cache, private')
self.send_header('Pragma', 'no-cache')
self.send_header('Content-Type', 'multipart/x-mixed-replace; boundary=FRAME')
self.end_headers()
try:
while True:
with output.condition:
output.condition.wait()
frame = output.frame
self.wfile.write(b'--FRAME\r\n')
self.send_header('Content-Type', 'image/jpeg')
self.send_header('Content-Length', len(frame))
self.end_headers()
self.wfile.write(frame)
self.wfile.write(b'\r\n')
except Exception as e:
logging.warning(
'Removed streaming client %s: %s',
self.client_address, str(e))
else:
self.send_error(404)
self.end_headers()
class StreamingServer(socketserver.ThreadingMixIn, server.HTTPServer):
allow_reuse_address = True
daemon_threads = True
with picamera.PiCamera(resolution='1920x1080', framerate=30) as camera:
try:
with open("/home/pi/stream.mjpeg", "wb") as outFile:
output = StreamingOutput()
output.file = outFile
camera.rotation = 180
camera.start_recording(output, format='mjpeg')
try:
address = ('', 8000)
server = StreamingServer(address, StreamingHandler)
server.serve_forever()
finally:
camera.stop_recording()
finally:
outFile.close()
raspivid -o - | tee fileso it divide output to file and stdout. But tee makes video broken. Video is much short. I watch it and it is played x-times faster. I admit question is asked wrong way and thank you I also raise another in general Stack.