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Autres articles (77)
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Configurer la prise en compte des langues
15 novembre 2010, parAccéder à la configuration et ajouter des langues prises en compte
Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...) -
La sauvegarde automatique de canaux SPIP
1er avril 2010, parDans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...) -
Automated installation script of MediaSPIP
25 avril 2011, parTo overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
The documentation of the use of this installation script is available here.
The code of this (...)
Sur d’autres sites (6581)
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ffmpeg extracting frames from video
22 novembre 2017, par TheOtherguyz4kjI am using Writingminds FFmpeg to use FFmpeg with Android. I am currently trying to extract frames from a video.
I would like to extract 8 frames from the video evenly distributed throughout the video. I found this tutorial here is my implementation of it.
MediaMetadataRetriever retriever = new MediaMetadataRetriever();
retriever.setDataSource(videoCroppedFile.getAbsolutePath());
String time = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
Long videoLength = Long.parseLong(time);
final String cmd[] = {
"-i",
videoCroppedFile.getAbsolutePath(),
"-f",
"image2",
"-ss",
String.valueOf(videoLength.intValue() / ((8 + 1) * 10)),
"-r",
String.valueOf((8 + 1) / videoLength.intValue()),
mediaStorageDir.getAbsolutePath() + "/%d.jpg"
};However, when i go to the folder where the frames should be saved there isn’t anything there. Also there are no error messages.
I feel like its a way this library takes the String parameters. I’ve been stuck on this for sometime I have tried lots of different versions of the
cmd. I was hoping someone could help.Here is my output from ffmpeg :
1-22 19:33:14.904 30981-30981/com.firebase.android D/videoFrames: failure reason ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (GCC)
configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/com.firebase.android/cache/videovgntp6q5ar4dglkaflaoobfpcv945824159.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.25.100
Duration: 00:00:08.28, start: 0.000000, bitrate: 391 kb/s
Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x764 [SAR 1:1 DAR 180:191], 132 kb/s, 16.67 fps, 16.67 tbr, 12800 tbn, 33.33 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default)
Metadata:
handler_name : SoundHandler
Invalid framerate value: 0Update 2
Here is my Android code :
try {
ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
@Override
public void onStart() {
Log.d("videoFrames", "starting to load binary");
}
@Override
public void onFailure() {
Log.d("videoFrames", "failed to load binary");
}
@Override
public void onSuccess() {
Log.d("videoFrames", "loaded binary");
try {
ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
@Override
public void onStart() {
Log.d("videoFrames", " starting to get frames from video");
if (mediaStorageDir.isDirectory() && mediaStorageDir.list().length > 0) {
String[] children = mediaStorageDir.list();
for (int i = 0; i < children.length; i++) {
new File(mediaStorageDir, children[i]).delete();
}
}
}
@Override
public void onProgress(String message) {
Log.d("videoFrames", " progress getting frames from video");
}
@Override
public void onFailure(String message) {
Log.d("videoFrames", " failed to get frames from video");
Log.d("videoFrames", " failure reason " + message);
Log.d("videoFrames", " ----------------------------------------------- ");
}
@Override
public void onSuccess(String message) {
Log.d("videoFrames", " success getting frames from video");
}
@Override
public void onFinish() {
Log.d("videoFrames", " finished getting frames from video");
}
});
} catch (FFmpegCommandAlreadyRunningException e) {
Log.d("videoFrames", " command already running in fmpeg");
e.printStackTrace();
}
}
@Override
public void onFinish() {}
});
} catch (FFmpegNotSupportedException e) {
// Handle if FFmpeg is not supported by device
}Update 3
I fixed my code by doing :
final String cmd[] = {
"-i",
videoCroppedFile.getAbsolutePath(),
"-f",
"image2",
"-ss",
String.valueOf(videoLength.floatValue() / (8.0 * 10.0)),
"-r",
String.valueOf(8.0 / videoLength.floatValue()),
mediaStorageDir.getAbsolutePath() + "/%d.jpg"
}; -
Why does FFMPEG report the wrong duration ?
7 janvier 2020, par Adrian LynchI have an oldish build of FFmpeg that I can’t easily change.
We use FFmpeg to find the duration of video and sound files. So far it has been working wonderfully.
Recently on an uploaded file, FFmpeg has reported a 30 second file as being 5 minutes 30 seconds in length.
Could it be something wrong with the file rather than FFmpeg ?
If I use FFmpeg to convert to another file, the duration is restored.
In case it matters, ffmpeg -i ’path to the file’ produces :
FFmpeg version Sherpya-r15618, Copyright (c) 2000-2008 Fabrice Bellard, et al. libavutil 49.11. 0 / 49.11. 0 libavcodec 52. 0. 0 / 52. 0. 0 libavformat 52.22. 1 / 52.22. 1 libavdevice 52. 1. 0 / 52. 1. 0 libswscale 0. 6. 1 / 0. 6. 1 libpostproc 51. 2. 0 / 51. 2. 0 built on Oct 14 2008 23:43:47, gcc : 4.2.5 20080919 (prerelease) [Sherpya] Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ’H :\path\to\file.mov’ : Duration : 00:05:35.00, start : 0.000000, bitrate : 1223 kb/s Stream #0.0(eng) : Audio : aac, 44100 Hz, stereo, s16 Stream #0.1(eng) : Video : h264, yuv420p, 720x576, 25.00 tb(r) Must supply at least one output fileIt’s that very command I use to then extract the duration with RegEx.
Does anyone have a nice application that can do what I’m trying above but get it right 100% of the time ?
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Want to send a video from desktop to Wowza using ffmpeg
3 mars 2018, par ST94I am trying to stream a local
.mp4video file from my laptop toWowza Streaming Engineusing ffmpeg. Both systems are able to ping each other. I give the following command on my laptopffmpeg -re -i bunny_1080p_60fps_normal.mp4 -vcodec libx264 -acodec aac -ar 48000 -strict experimental -f flv "rtmp://192.168.1.22:1935/live/myStream"192.168.1.22is the IP address of Wowza server residing on another system runningUbuntu 17.04.I see the following on the command prompt of my laptop when I give the above command,
ffmpeg version N-89894-g18e2ac032e Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7.2.0 (GCC)
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libmfx --enable-amf --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth
libavutil 56. 7.100 / 56. 7.100
libavcodec 58. 9.100 / 58. 9.100
libavformat 58. 5.101 / 58. 5.101
libavdevice 58. 0.101 / 58. 0.101
libavfilter 7. 11.101 / 7. 11.101
libswscale 5. 0.101 / 5. 0.101
libswresample 3. 0.101 / 3. 0.101
libpostproc 55. 0.100 / 55. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bunny_1080p_60fps_normal.mp4':
Metadata:
major_brand : isom
minor_version : 1
compatible_brands: isomavc1
creation_time : 2013-12-16T17:59:32.000000Z
title : Big Buck Bunny, Sunflower version
artist : Blender Foundation 2008, Janus Bager Kristensen 2013
comment : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
genre : Animation
composer : Sacha Goedegebure
Duration: 00:10:34.53, start: 0.000000, bitrate: 4486 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 4001 kb/s, 60 fps, 60 tbr, 60k tbn, 120 tbc (default)
Metadata:
creation_time : 2013-12-16T17:59:32.000000Z
handler_name : GPAC ISO Video Handler
Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo, s16p, 160 kb/s (default)
Metadata:
creation_time : 2013-12-16T17:59:37.000000Z
handler_name : GPAC ISO Audio Handler
Stream #0:2(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 320 kb/s (default)
Metadata:
creation_time : 2013-12-16T17:59:37.000000Z
handler_name : GPAC ISO Audio Handler
Side data:
audio service type: main
[rtmp @ 000001ed7c4108c0] No credentials set
[rtmp @ 000001ed7c4108c0] Server error: [ AccessManager.Reject ] : [ code=403 need auth; authmod=adobe ] :
rtmp://192.168.1.22:1935/live/myStream: Unknown error occurredCan anyone please tell me what the exact procedure is to stream a video file to Wowza .
How will I be able to view the stream at Wowza ?
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