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Autres articles (106)
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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 (...) -
Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...)
Sur d’autres sites (14603)
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lavf/webm_dash : some fields should go into Representation
1er octobre 2014, par Vignesh Venkatasubramanianlavf/webm_dash : some fields should go into Representation
Width, Height and Sample Rate should be in the AdaptationSet tag
only if all the contained representations have the same width,
height and sampling rate. Otherwise they should go into the
Representation tag. This patch adds this functionality and a fate
test for the same.Signed-off-by : Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by : Michael Niedermayer <michaelni@gmx.at> -
ffmpeg creates empty mpd-file
1er avril 2021, par MacsterI'm trying to live stream a webm file using ffmpeg and Dash.js as a Player. Creating chunks with ffmpeg seems to work fine, but when want to create the manifest it says
Could not find codec parameters for stream 0 (Video: vp9, none, 640x480): unspecified pixel format Consider increasing the value for the 'analyzeduration' and 'probesize' options
and at the endOutput file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
.

Commands I use


ffmpeg -re -r 25 -i Dash/strm.webm
 -map 0:v:0
 -pix_fmt yuv420p
 -c:v libvpx-vp9
 -s 640x480 -keyint_min 25 -g 25 
 -speed 6 -threads 8 -static-thresh 0 -max-intra-rate 300 
 -deadline realtime -lag-in-frames 0 -error-resilient 1
 -f webm_chunk 
 -header "Dash/glass_360.hdr"
 -chunk_start_index 1
 Dash\glass_360_%d.chk



Manifest


ffmpeg ^
 -f webm_dash_manifest -live 1
 -r 25
 -i Dash/glass_360.hdr
 -c copy
 -map 0
 -r 25
 -framerate 25
 -f webm_dash_manifest -live 1
 -adaptation_sets "id=0,streams=0"
 -chunk_start_index 1
 -chunk_duration_ms 1000
 -time_shift_buffer_depth 7200
 -minimum_update_period 7200
 Dash/glass_live_manifest.mpd



Manifest Output


libavutil 56. 49.100 / 56. 49.100
 libavcodec 58. 87.101 / 58. 87.101
 libavformat 58. 43.100 / 58. 43.100
 libavdevice 58. 9.103 / 58. 9.103
 libavfilter 7. 83.100 / 7. 83.100
 libswscale 5. 6.101 / 5. 6.101
 libswresample 3. 6.100 / 3. 6.100
 libpostproc 55. 6.100 / 55. 6.100
[webm_dash_manifest @ 0000015f19f2ea40] Could not find codec parameters for stream 0 (Video: vp9, none, 640x480): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, webm_dash_manifest, from 'Dash/glass_360.hdr':
 Metadata:
 ENCODER : Lavf58.43.100
 Duration: N/A, bitrate: N/A
 Stream #0:0(eng): Video: vp9, none, 640x480, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
 Metadata:
 ALPHA_MODE : 1
 ENCODER : Lavc58.87.101 libvpx-vp9
 webm_dash_manifest_file_name: glass_360.hdr
 webm_dash_manifest_track_number: 1
Output #0, webm_dash_manifest, to 'stream_manifest.mpd':
 Metadata:
 encoder : Lavf58.43.100
 Stream #0:0(eng): Video: vp9, none, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 1k tbr, 1k tbn, 1k tbc (default)
 Metadata:
 ALPHA_MODE : 1
 ENCODER : Lavc58.87.101 libvpx-vp9
 webm_dash_manifest_file_name: glass_360.hdr
 webm_dash_manifest_track_number: 1
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
frame= 0 fps=0.0 q=-1.0 Lsize= 1kB time=00:00:00.00 bitrate=N/A speed= 0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)



glass_live_manifest.mpd


<?xml version="1.0" encoding="UTF-8"?>

<period start="PT0S">
<adaptationset mimetype="video/webm" codecs="vp9" lang="eng" bitstreamswitching="true" subsegmentalignment="true" subsegmentstartswithsap="1">
<contentcomponent type="video"></contentcomponent>
<segmenttemplate timescale="1000" duration="1000" media="glass_$RepresentationID$_$Number$.chk" startnumber="1" initialization="glass_$RepresentationID$.hdr"></segmenttemplate>
<representation bandwidth="1000000" width="640" height="480" codecs="vp9" mimetype="video/webm" startswithsap="1"></representation>
</adaptationset>
</period>




UPDATE


I fixed the "warnings" by changing the comands like this :


ffmpeg -re -r 25 -i Dash/strm.webm
-map 0:v:0
-pix_fmt yuv420p
-c:v libvpx
-s 640x480 -keyint_min 60 -g 60 -speed 6 -tile-columns 4 -frame-parallel 1 -threads 8 -static-thresh 0 -max-intra-rate 300 -deadline realtime -lag-in-frames 0 -error-resilient 1
-b:v 3000k
-f webm_chunk
-header "Dash/glass_360.hdr"
-chunk_start_index 1 Dash/glass_360_%d.chk
-map 0:a:0
-c:a libvorbis
-b:a 128k -ar 44100
-f webm_chunk
-audio_chunk_duration 2000
-header Dash/glass_171.hdr
-chunk_start_index 1 Dash/glass_171_%d.chk

ffmpeg
-f webm_dash_manifest -live 1
-i Dash/glass_360.hdr
-f webm_dash_manifest -live 1
-i Dash/glass_171.hdr
-c copy
-map 0 -map 1
-f webm_dash_manifest -live 1
-adaptation_sets "id=0,streams=0 id=1,streams=1"
-chunk_start_index 1
-chunk_duration_ms 2000
-time_shift_buffer_depth 7200
-minimum_update_period 7200 Dash/glass_video_manifest.mpd



However, it's still not working.


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Execute mp4box cmd via java got error
6 novembre 2015, par Ducthiensorry when I tag ffmpeg because I couldn’t tag MP4Box.But I have proplem with excuted with ffmpeg via javacode too.
I read at How to execute cmd commands via Java but i can’t find my proplem.I’m tested commands in cmd, it was ok :
MP4Box -dash 10000 -dash-profile live -segment-name output- seg -rap
-bs-switching no input.mp4but when i executed cmd via java code , i get error :
Error - only one input file found as argument, please check usage
Below is my code, has something wrong ?
package com.uit.reformatvideo;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.logging.Logger;
public class ExecuteComandToFormatVideo {
public final static String LINK_MP4BOX = "C:/MP4Box/Tools/MP4Box.exe";
public final static String CREATE_MPD_ECLIPSE = "mp4box -dash 10000 -frag 1000 -rap -bs-switching no";
public final static String CREATE_MPD_IE = "MP4Box -dash 10000 -dash-profile live -segment-name output-seg -rap -bs-switching no";
private static final Logger log = Logger.getLogger(ExecuteComandToFormatVideo.class.getName());
public static void main(String[] args) throws IOException, InterruptedException {
String s = null;
try {
// run the Unix "ps -ef" command
// using the Runtime exec method:
String lsCmd[] = new String [2];
lsCmd[0] = LINK_MP4BOX;
lsCmd[1] = "MP4Box -dash 10000 -dash-profile live -segment-name output-seg -rap -bs-switching no input.mp4";
Process p = Runtime.getRuntime().exec(lsCmd);
p.waitFor();
BufferedReader stdInput = new BufferedReader(new
InputStreamReader(p.getInputStream()));
BufferedReader stdError = new BufferedReader(new
InputStreamReader(p.getErrorStream()));
// read the output from the command
System.out.println("Here is the standard output of the command:\n");
while ((s = stdInput.readLine()) != null) {
System.out.println(s);
}
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null) {
System.out.println(s);
}
System.exit(0);
}
catch (IOException e) {
System.out.println("exception happened - here's what I know: ");
e.printStackTrace();
System.exit(-1);
}
}
}Here was out put :
Here is the standard output of the command :
Here is the standarderror of the command (if any) : Error - only one
input file found as argument, please check usage