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Autres articles (75)
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MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
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 (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
Sur d’autres sites (10702)
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lavc/hevc_ps : Add SPS/PPS parse support for HEVC extension syntax
16 février 2023, par Linjie Fulavc/hevc_ps : Add SPS/PPS parse support for HEVC extension syntax
1. Add extension syntax according to 7.3.2.2.3/7.3.2.3.3 in T-REC-H.265-201911.
2. Keep using parsed PPS when bitstream overread for compatibility. For
example, the clip PS_A_VIDYO_3.bit in FATE test has incomplete extension
syntax which will be overread and un-decodable if without this change.
3. Format brace in pps_range_extensions().Signed-off-by : Linjie Fu <linjie.justin.fu@gmail.com>
Signed-off-by : Haihao Xiang <haihao.xiang@intel.com>
Signed-off-by : Fei Wang <fei.w.wang@intel.com> -
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"
}; -
lavc/av1 : Add unit test for level handling
11 septembre 2023, par Fei Wang
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