Error loading http stream

g-unit-2 · April 15, 2024, 12:47am

Given a simple web server @ local
streaming h.264 video using picamera2
streams to localhost:port in browser

As a developer creating a stream media source asset and providing the the correct host and port

the below error is received upon trying to open the media source.

ERROR

LogAvfMedia:

Warning: Failed to load video tracks.
The operation couldn’t be completed.

CoreMediaErrorDomain error -12939

byte range length mismatch - should be length 2 is length 182)

see below for example web server implementation.

github.com

raspberrypi/picamera2/blob/main/examples/mjpeg_server.py

#!/usr/bin/python3

# Mostly copied from https://picamera.readthedocs.io/en/release-1.13/recipes2.html
# Run this script, then point a web browser at http:<this-ip-address>:8000
# Note: needs simplejpeg to be installed (pip3 install simplejpeg).

import io
import logging
import socketserver
from http import server
from threading import Condition

from picamera2 import Picamera2
from picamera2.encoders import JpegEncoder
from picamera2.outputs import FileOutput

PAGE = """\
<html>
<head>
<title>picamera2 MJPEG streaming demo</title>

This file has been truncated. show original

Notes.
Possible header length is incorrect.

but given

content = PAGE.encode(‘utf-8’)
self.send_header(‘Content-Length’, len(content))

???

nande · April 15, 2024, 12:55am

python code looks ok to me.
have you tried this on the web?
quite possibly though ue is trying to use a technique that queries the file before actually loading.
requesting only 2 bytes and you send the whole frame. this is very common but your code is a more simple implementation.
or maybe you’re only sending 2 bytes.

check this

might be good to ensure this is not a CORS issue.