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Autres articles (61)
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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...) -
MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...)
Sur d’autres sites (3453)
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FFMPEG / streameye - MJPEG streaming from raspebbry cam
16 mai 2017, par Emmanuel BrunetI’m trying to stream video from different Raspberry Pi’s .. ; RPI 2B /2 B+ and RPI 3.
I found out how to stream rtmp / flv video through NINGX and it works fine but now I need to convert this stream to MJPEG stream. Actually I need it as input for motion (detection)I’ve tried mjeg_streamer to publish a MJPEG stream using FFMPEG / image2 in front to split the stream into image chunhs. But it’s too slow and to much greedy
after many searches I’ve installed streameye which seems perfect. but the process traps 10s after a web client connects to the server hosted on the raspberry py (2/3 same result so not an ARM61/71 issue I think .. same with FFMPEG or AVCONV).
... and more over it crashes the ssh session we are connected to access the rapsberry device. An FFMPEG trap generating a SSH session issue ?.
Note that the raspberry was not down after connection loss as all it’s services were still up and running. Just need to connect via SSH to again.I don’t know if it’s due to my ffmpeg feeding command or if it’s a streameye nug. Didn’t find any info about on google but a web client issue that would have been fixed in 0.8 (the version I’m working on)
from a FLV / h264 I run
avconv -r 15 -f flv -i rtmp://127.0.0.1/app/my_stream -c:v mjpeg -crf 15 -f mjpeg - | streameye -p 8080the source stream is defined as follow (no audio stream) :
Input #0, live_flv, from 'rtmp://boxnet-0-eth/live/boxnet-2':
Metadata:
Server : NGINX RTMP (github.com/arut/nginx-rtmp-module)
displayWidth : 480
displayHeight : 320
fps : 0
profile :
level :
Duration: 00:00:00.00, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264 (High), yuv420p(progressive), 480x320, 1k tbr, 1k tbn -
Removing encoded date of mp4's metadata ?
18 mai 2017, par yongwoonI want to remove encoded data in mp4 file for test.
for this, I try to use library like mp4box, ffmpeg, AtomicParsley.
But I can’t.
How can I remove an encoded date in metadata ?
Is it impossible ?$ mediainfo xxxxx.mp4
General
Complete name : xxxxx.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/mp41)
File size : 4.62 MiB
Duration : 2 min 0 s
Overall bit rate mode : Constant
Overall bit rate : 323 kb/s
Encoded date : UTC 1904-01-01 00:00:00
Tagged date : UTC 1904-01-01 00:00:00
Writing application : Lavf57.71.100
Audio
ID : 1
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 2 min 0 s
Duration_LastFrame : -1 ms
Bit rate mode : Constant
Bit rate : 322 kb/s
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 spf)
Compression mode : Lossy
Stream size : 4.60 MiB (100%)
Default : Yes
Alternate group : 1
Encoded date : UTC 1904-01-01 00:00:00
Tagged date : UTC 1904-01-01 00:00:00 -
How to compress webcam videos recorded by html5 MediaRecorder api ?
19 mai 2017, par JasonYI successfully recorded my webcam using MediaRecorder api and the resulting filesizes seemed far too big for their quality.
For example, for an 8 second video that was 480x640 I got a 1mB file size. That does not seem right.
My code to record()
navigator.mediaDevices.getUserMedia({video: true, audio: true})
.then(function(stream){
var options = {
mimeType : "video/webm;codecs=vp9"
//I don't set bitrate here even if I do the quality is too bad
}
var media_recorder = new MediaRecorder(media_stream, options);
var recorded_data = [];
media_recorder.ondataavailable = function(e){
recorded_data.push(e.data);
}
media_recorder.onstop = function(e){
recorded_data.push(e.data);
var recorded_blob = new Blob(recorded_data, { 'type' : 'video/webm; codecs=vp9' });
var recorded_video_url = window.URL.createObjectURL(recorded_blob);
//here I write some code to download the blob from this url through a href
}
})The file obtained by this method is unreasonably large which makes me wonder if it was even compressed when encoded by VP9 ? A 7 second video is about 870kB !
Inspecting the file with a mediainfo tool gives me
General
Count : 323
Count of stream of this kind : 1
Kind of stream : General
Kind of stream : General
Stream identifier : 0
Count of video streams : 1
Count of audio streams : 1
Video_Format_List : VP9
Video_Format_WithHint_List : VP9
Codecs Video : V_VP9
Video_Language_List : English
Audio_Format_List : Opus
Audio_Format_WithHint_List : Opus
Audio codecs : Opus
Audio_Language_List : English
Complete name : recorded_video.webm
File name : recorded_video
File extension : webm
Format : WebM
Format : WebM
Format/Url : http://www.webmproject.org/
Format/Extensions usually used : webm
Commercial name : WebM
Format version : Version 2
Internet media type : video/webm
Codec : WebM
Codec : WebM
Codec/Url : http://www.webmproject.org/
Codec/Extensions usually used : webm
File size : 867870
File size : 848 KiB
File size : 848 KiB
File size : 848 KiB
File size : 848 KiB
File size : 847.5 KiB
File last modification date : UTC 2017-05-19 05:48:00
File last modification date (local) : 2017-05-19 17:48:00
Writing application : Chrome
Writing application : Chrome
Writing library : Chrome
Writing library : Chrome
IsTruncated : Yes
Video
Count : 332
Count of stream of this kind : 1
Kind of stream : Video
Kind of stream : Video
Stream identifier : 0
StreamOrder : 1
ID : 2
ID : 2
Unique ID : 62101435245162993
Format : VP9
Commercial name : VP9
Codec ID : V_VP9
Codec ID/Url : http://www.webmproject.org/
Codec : V_VP9
Codec : V_VP9
Width : 640
Width : 640 pixels
Height : 480
Height : 480 pixels
Pixel aspect ratio : 1.000
Display aspect ratio : 1.333
Display aspect ratio : 4:3
Frame rate mode : VFR
Frame rate mode : Variable
Language : en
Language : English
Language : English
Language : en
Language : eng
Language : en
Default : Yes
Default : Yes
Forced : No
Forced : No
Audio
Count : 272
Count of stream of this kind : 1
Kind of stream : Audio
Kind of stream : Audio
Stream identifier : 0
StreamOrder : 0
ID : 1
ID : 1
Unique ID : 32224324715799545
Format : Opus
Format/Url : http://opus-codec.org/
Commercial name : Opus
Internet media type : audio/opus
Codec ID : A_OPUS
Codec ID/Url : http://opus-codec.org
Codec : Opus
Codec : Opus
Codec/Family : PCM
Channel(s) : 1
Channel(s) : 1 channel
Channel positions : Front: C
Channel positions : 1/0/0
Sampling rate : 48000
Sampling rate : 48.0 KHz
Compression mode : Lossy
Compression mode : Lossy
Delay : 718
Delay : 718ms
Delay : 718ms
Delay : 718ms
Delay : 00:00:00.718
Delay, origin : Container
Delay, origin : Container
Language : en
Language : English
Language : English
Language : en
Language : eng
Language : en
Default : Yes
Default : Yes
Forced : No
Forced : NoWhat did I do wrong ? Do I have to re-encode it after the chunks get appended ? Is there some attribute I’m missing ? VP9 is supposed to reduce file sizes drastically.
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