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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (52)
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Creating farms of unique websites
13 avril 2011, parMediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...) -
Websites made with MediaSPIP
2 mai 2011, parThis page lists some websites based on MediaSPIP.
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Possibilité de déploiement en ferme
12 avril 2011, parMediaSPIP peut être installé comme une ferme, avec un seul "noyau" hébergé sur un serveur dédié et utilisé par une multitude de sites différents.
Cela permet, par exemple : de pouvoir partager les frais de mise en œuvre entre plusieurs projets / individus ; de pouvoir déployer rapidement une multitude de sites uniques ; d’éviter d’avoir à mettre l’ensemble des créations dans un fourre-tout numérique comme c’est le cas pour les grandes plate-formes tout public disséminées sur le (...)
Sur d’autres sites (5822)
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How to solve issue for converting ismv file of h264 video codec and aac audio codec ?
4 octobre 2013, par PriyalI want to convert transmux ismv file to mp4 format. ISMV file is encoded withe the following ffmpeg detail :
Metadata:
major_brand : isml
minor_version : 1
compatible_brands: piffiso2
creation_time : 2013-10-03 14:10:41
Duration: 15:21:13.16, start: 0.000000, bitrate: 41 kb/s
Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64
kb/s (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Audio
Stream #0:1(und): Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s, 29.9
7 tbr, 10000k tbn, 20000k tbc (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Video
Stream #0:2(und): Data: none (dfxp / 0x70786664), 32 kb/s (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : TextI used the following ffmpeg command to transmux :
ffmpeg -y -ss 00:00:10 -i Encoder1.ismv -vcodec libx264 -ar 44100 -t 40 -preset slow -qp 0
Encoder.mp4I got output as :
ffmpeg version N-56010-g54d628a Copyright (c) 2000-2013 the FFmpeg developers
built on Sep 4 2013 00:44:27 with gcc 4.7.3 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
enable-libxvid --enable-zlib
libavutil 52. 43.100 / 52. 43.100
libavcodec 55. 31.100 / 55. 31.100
libavformat 55. 16.100 / 55. 16.100
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 83.102 / 3. 83.102
libswscale 2. 5.100 / 2. 5.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
[aac @ 040f1ba0] TYPE_FIL: Input buffer exhausted before END element found
[h264 @ 00353120] AVC: nal size -729776398
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -570515285
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -1477874754
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -712314563
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -23151524
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -592499201
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size 225768173
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size 698187359
[h264 @ 00353120] AVC: nal size 635127544
[h264 @ 00353120] no frame!
[h264 @ 00353120] AVC: nal size -1242688339
[h264 @ 00353120] AVC: nal size 269543071
[h264 @ 00353120] no frame!
[mov,mp4,m4a,3gp,3g2,mj2 @ 0035e840] decoding for stream 1 failed
[mov,mp4,m4a,3gp,3g2,mj2 @ 0035e840] Could not find codec parameters for stream
1 (Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s): unspecified pixel form
at Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\inetpub\media\archives\DEFAULT WEB S
ITE\PushToPUblishPoint\Eagan_12034_Soccer_3-10-2013_14_10_19-isml\2013-10-03-14-
10-35-436\Segment001\Encoder1.ismv':
Metadata:
major_brand : isml
minor_version : 1
compatible_brands: piffiso2
creation_time : 2013-10-03 14:10:41
Duration: 15:21:13.16, start: 0.000000, bitrate: 41 kb/s
Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 64
kb/s (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Audio
Stream #0:1(und): Video: h264 (avc1 / 0x31637661), 1280x720, 3217 kb/s, 29.9
7 tbr, 10000k tbn, 20000k tbc (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Video
Stream #0:2(und): Data: none (dfxp / 0x70786664), 32 kb/s (default)
Metadata:
creation_time : 2013-10-03 14:10:41
handler_name : Text
[buffer @ 04679480] Unable to parse option value "-1" as pixel format
Last message repeated 1 times
[buffer @ 04679480] Error setting option pix_fmt to value -1.
[graph 0 input from stream 0:1 @ 040f7380] Error applying options to the filter.
Error opening filters!Please suggest the solution for Windows OS
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NextJS not working with jsmpeg/node-rtsp-stream. Trying to display RTSP stream
15 septembre 2022, par Vlad CrehulFollowing : https://github.com/kyriesent/node-rtsp-stream and How to display IP camera feed from an RTSP url onto reactjs app page ? I was trying to display the RTSP stream from a CCTV but it gives me an error.
ReferenceError: document is not definedatscripts\jsmpeg.min.js (1:701) @ eval

I haven't found a single implementation of this module in NextJS so I might be doing something wrong but I can't tell what. And I didn't find any better solution for NextJS.


There wasn't anything to get me out in : https://github.com/phoboslab/jsmpeg but I might be using it wrong in here.


The rabbit hole started from this : How can I display an RTSP video stream in a web page ? but things are either outdated, do not apply or I couldn't figure them out.


The actual question :


How can I fix the error I get ? Is there an alternative to this in NextJS ? I don't care how all I need is to stream the RTSP feed from a CCTV.


Folder Structure :


components
 -layout
 -Stream.js
pages
 -api
 -stream
 -[streamId].js
 -app.js
 -index.js
scripts
 -jsmpeg.min.js


Stream.jsis a component instream/app.jsandstream/app.jsis used instream/[streamId].js

Client-side :
Stream.js

import JSMpeg from "../../scripts/jsmpeg.min.js";

const Stream = (props) => {
 const player = new JSMpeg.Player("ws://localhost:9999", {
 canvas: document.getElementById("video-canvas"), // Canvas should be a canvas DOM element
 });

 return (
 <fragment>
 
 </fragment>
 );
};


Server-side :
[streamId.js]

export async function getStaticProps(context) {
const StreamCCTV = require("node-rtsp-stream");
 const streamCCTV = new StreamCCTV({
 ffmpegPath: "C:\\Program Files\\ffmpeg\\bin\\ffmpeg.exe", //! remove on Ubuntu
 name: "name",
 streamUrl: "rtsp://someuser:somepassword@1.1.1.1",
 wsPort: 9999,
 ffmpegOptions: {
 // options ffmpeg flags
 "-stats": "", // an option with no neccessary value uses a blank string
 "-r": 30, // options with required values specify the value after the key
 },
 });



Edit :


I have also tried with https://www.npmjs.com/package/jsmpeg
Where i changed
Stream.jsto :

import jsmpeg from 'jsmpeg';

const Stream = (props) => {
 const client = new WebSocket("ws://localhost:9999")
 const player = new jsmpeg(client, {
 canvas: document.getElementById("video-canvas"), // Canvas should be a canvas DOM element
 });

 return (
 <fragment>
 
 </fragment>
 );
};


Now the error is :
ReferenceError: window is not defined

-
How to use FFMPEG properly in python with openCV ?
9 mai 2022, par GottaGamingI got a problem with my programm. It has no output. I try to make a Webcamvideostream on my raspberry pi 4 and try to use ffmpeg to handle the frame grabbing in python. My Problem is, that the output looks terrible. No real picture from my cam. Is it the wrong pixel format ? And it doesnt really care what resolution i choose. It always takes the 640x480 as resolution. I show you the code :



 import os
 import tempfile
 import subprocess
 import cv2
 import numpy as np
 
 # To get this path execute:
 # $ which ffmpeg
 FFMPEG_BIN = '/usr/bin/ffmpeg'
 def run_ffmpeg():
 ffmpg_cmd = [
 FFMPEG_BIN,
 '-i', '/dev/video0',
 '-f', 'image2pipe',
 '-framerate', '30',
 '-video_size', '1280x720',
 # opencv requires bgr24 pixel format
 '-input_format', 'mjpeg',
 #'-an','-sn', # disable audio processing
 # '-f', 'image2pipe',
 '-', # output to go to stdout
 ]
 return subprocess.Popen(ffmpg_cmd, stdout = subprocess.PIPE, bufsize=10**8)
 
 def run_cv_window(process):
 while True:
 # read frame-by-frame
 raw_image = process.stdout.read(640*480*3)
 if raw_image == b'':
 raise RuntimeError("Empty pipe")
 
 # transform the bytes read into a numpy array
 frame = np.frombuffer(raw_image, dtype='uint8')
 frame = frame.reshape((480,640,3)) # height, width, channels
 if frame is not None:
 cv2.imshow('Video', frame)
 
 if cv2.waitKey(1) & 0xFF == ord('q'):
 break
 process.stdout.flush()
 
 cv2.destroyAllWindows()
 process.terminate()
 print(process.poll())
 
 def run():
 ffmpeg_process = run_ffmpeg()
 run_cv_window(ffmpeg_process)
 
 run()



This is the following output on the console :



 libavutil 56. 51.100 / 56. 51.100
 libavcodec 58. 91.100 / 58. 91.100
 libavformat 58. 45.100 / 58. 45.100
 libavdevice 58. 10.100 / 58. 10.100
 libavfilter 7. 85.100 / 7. 85.100
 libavresample 4. 0. 0 / 4. 0. 0
 libswscale 5. 7.100 / 5. 7.100
 libswresample 3. 7.100 / 3. 7.100
 libpostproc 55. 7.100 / 55. 7.100
 Input #0, video4linux2,v4l2, from '/dev/video0':
 Duration: N/A, start: 2588.219343, bitrate: 147456 kb/s
 Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
 Stream mapping:
 Stream #0:0 -> #0:0 (rawvideo (native) -> mjpeg (native))
 Press [q] to stop, [?] for help
 [swscaler @ 0xb317a0] deprecated pixel format used, make sure you did set range correctly
 Output #0, image2pipe, to 'pipe:':
 Metadata:
 encoder : Lavf58.45.100
 Stream #0:0: Video: mjpeg, yuvj422p(pc), 640x480, q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc
 Metadata:
 encoder : Lavc58.91.100 mjpeg
 Side data:
 cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
 frame= 16 fps=0.0 q=24.8 size= 331kB time=00:00:00.53 bitrate=5082.7kbits/s speed=1.06x 
 frame= 31 fps= 31 q=24.8 size= 510kB time=00:00:01.03 bitrate=4044.3kbits/s speed=1.02x 
 frame= 46 fps= 30 q=24.8 size= 694kB time=00:00:01.53 bitrate=3706.8kbits/s speed=1.01x



This is why i chose the 640x480 in the main code. It wont choose the 1280x720 resolution. Theres no real output picture and idk why. Can someone please help me ?


Heres the output picture :



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