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MediaSPIP Simple : futur thème graphique par défaut ?
26 septembre 2013, par
Mis à jour : Octobre 2013
Langue : français
Type : Video
Sur d’autres sites (333)
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Frames from Video Using OpenCV in Ubuntu with Java 17
2 août 2023, par bstrdnI've been trying to extract frames from a video using OpenCV in an Ubuntu environment with Java 17, but all my attempts have been unsuccessful so far. The main issue is that ffmpeg is not detected by the OpenCV library on ubuntu.


Here's my test code :


Main class


import org.opencv.core.Core;
import org.opencv.videoio.VideoCapture;

public class Main {
 public static String videoPath = "";
 static {
 String osName = System.getProperty("os.name").toLowerCase();
 if (osName.contains("win")) {
 System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
 videoPath = ClassLoader.getSystemResource("video.mp4").getPath();
 } else {
 videoPath = "/video.mp4";
// System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
 System.load("/usr/lib/opencv_java470.so");
 }
 }

 public static void main(String[] args) throws InterruptedException {
 VideoCapture videoCapture = new VideoCapture(videoPath);
 if (!videoCapture.isOpened()) {
 System.out.println("Error opening video file.");
 } else {
 System.out.println("Everything is fine.");
 }
 System.out.println(Core.getBuildInformation());
 Thread.sleep(1000000000000000000L);
 }
}


Maven :


<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0">
 <modelversion>4.0.0</modelversion>
 <parent>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-parent</artifactid>
 <version>3.0.2</version>
 <relativepath></relativepath> 
 </parent>
 <groupid>org.example</groupid>
 <artifactid>untitled</artifactid>
 <version>1.0-SNAPSHOT</version>
 <properties>
 17
 17
 UTF-8
 </properties>

<dependencies>
<dependency>
 <groupid>org.bytedeco</groupid>
 <artifactid>opencv-platform</artifactid>
 <version>4.7.0-1.5.9</version>
</dependency>

<dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-web</artifactid>
</dependency>
</dependencies>
<build>
<plugins>
 <plugin>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-maven-plugin</artifactid>
 </plugin>
</plugins>
</build>
</project>


Dockerfile :


FROM ubuntu:20.04
RUN apt-get update && apt-get install -y openjdk-17-jdk
RUN apt-get update && apt-get install -y pkg-config
RUN apt-get update && apt-get install -y ffmpeg libavformat-dev libavcodec-dev libswscale-dev libavresample-dev
ENV JAVA_HOME /usr/lib/jvm/java-17-openjdk-amd64
COPY target/*.jar /app.jar
COPY src/main/resources/video.mp4 /
COPY opencv_java470.so /usr/lib
ENV JAVA_TOOL_OPTIONS="-Djava.library.path=/usr/lib:/lib:/usr/local/lib:/usr/local:/usr/lib/x86_64-linux-gnu"
ENV LD_LIBRARY_PATH=/usr/lib:/lib:/usr/local/lib:/usr/local:/usr/lib/x86_64-linux-gnu
ENTRYPOINT [ "sh", "-c", "java $JAVA_TOOL_OPTIONS -jar /app.jar" ]


The application displays the following text (video is not opened) :


Error opening video file.

2023-08-02T13:30:58.448538297Z 
2023-08-02T13:30:58.448572597Z General configuration for OpenCV 4.7.0 =====================================
2023-08-02T13:30:58.448587327Z Version control: v4.7.0
2023-08-02T13:30:58.448590607Z 
2023-08-02T13:30:58.448593217Z Platform:
2023-08-02T13:30:58.448596057Z Timestamp: 2023-03-27T23:13:34Z
2023-08-02T13:30:58.448598747Z Host: Linux 5.4.0-1103-azure x86_64
2023-08-02T13:30:58.448601377Z CMake: 3.25.2
2023-08-02T13:30:58.448604277Z CMake generator: Unix Makefiles
2023-08-02T13:30:58.448606837Z CMake build tool: /usr/bin/make
2023-08-02T13:30:58.448609327Z Configuration: RELEASE
2023-08-02T13:30:58.448611867Z 
.......there is a lot of text......
2023-08-02T13:30:58.448772865Z 
2023-08-02T13:30:58.448775355Z Video I/O:
2023-08-02T13:30:58.448777845Z DC1394: NO
2023-08-02T13:30:58.448780535Z FFMPEG: NO
2023-08-02T13:30:58.448783105Z avcodec: NO
2023-08-02T13:30:58.448785725Z avformat: NO
2023-08-02T13:30:58.448788295Z avutil: NO
2023-08-02T13:30:58.448790755Z swscale: NO
2023-08-02T13:30:58.448793295Z avresample: NO
2023-08-02T13:30:58.448795845Z GStreamer: NO
2023-08-02T13:30:58.448798255Z v4l/v4l2: YES (linux/videodev2.h)
2023-08-02T13:30:58.448800885Z 
2023-08-02T13:30:58.448803525Z Parallel framework: pthreads
2023-08-02T13:30:58.448806345Z 
............
2023-08-02T13:30:58.448859654Z Java: export all functions
2023-08-02T13:30:58.448862024Z ant: /usr/bin/ant (ver 1.10.5)
2023-08-02T13:30:58.448864504Z JNI: /opt/hostedtoolcache/jdk/8.0.362/x64/include /opt/hostedtoolcache/jdk/8.0.362/x64/include/linux /opt/hostedtoolcache/jdk/8.0.362/x64/include
2023-08-02T13:30:58.448867224Z Java wrappers: YES
2023-08-02T13:30:58.448869804Z Java tests: NO
2023-08-02T13:30:58.448872314Z 
2023-08-02T13:30:58.448874734Z Install to: /usr/local


Moreover, ffmpeg is installed on Ubuntu.


How can i fix this ? I'm deathly tired(


Thank you in advance for your assistance !


First I tried installation following the official instructions.https://github.com/bytedeco/javacv#required-software


Then the solution provided in https://stackoverflow.com/a/76750478/8087508,


but the result is the same.


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ffmpeg command to use font on subtitle still uses the default one
3 août 2023, par mikamy command in python :


ffmpegCommandAddSub = [
 'ffmpeg', '-i', input_video, '-vf', f"subtitles={input_srt}:force_style='Fontfile=Borel-Regular.ttf:fontsdir=./'",
 '-c:v', 'libx264', '-c:a', 'copy', output_video
]


Borel-Regular.ttf is in the same folder as the python code


the font is not applied to the subtitle. what am I doing wrong or didn't pay attention ?


FFMPEG -version :


ffmpeg version N-111432-g374184a4dc-20230714 Copyright (c) 2000-2023 the FFmpeg 

developers
built with gcc 13.1.0 (crosstool-NG 1.25.0.196_227d99d)
configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype 
--enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20230714
libavutil 58. 14.100 / 58. 14.100
libavcodec 60. 22.100 / 60. 22.100
libavformat 60. 10.100 / 60. 10.100
libavdevice 60. 2.101 / 60. 2.101
libavfilter 9. 8.102 / 9. 8.102
libswscale 7. 3.100 / 7. 3.100
libswresample 4. 11.100 / 4. 11.100
libpostproc 57. 2.100 / 57. 2.100


-
The error "Failed to query nvenc max version" typically occurs when using FFmpeg on Linux
28 juillet 2023, par Well ChenThe error "Failed to query nvenc max version" typically occurs when using FFmpeg with NVIDIA GPU acceleration (hevc_nvenc) on Linux.


Does anyone know how to solve this bug ? Thank you very much.


The following code is the FFmpeg code I entered, along with the output content.


ffmpeg -ss 10:00 -i /www/wwwroot/pyffmpeg/videos/0/011.mp4 -t 20 -r 30 -b:v 4M -an -vcodec hevc_nvenc -y /www/wwwroot/pyffmpeg/videos/post/999.mp4
ffmpeg version 6.0 Copyright (c) 2000-2023 the FFmpeg developers
 built with gcc 8 (GCC)
 configuration: --extra-cflags='-I/usr/local/cuda/include -fPIC ' --extra-ldflags='-L/usr/local/cuda/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-cuvid --enable-nvenc --enable-nonfree --nvcc='nvcc=/usr/local/cuda-12.2/bin/nvcc'
 WARNING: library configuration mismatch
 avutil configuration: --extra-cflags='-I/usr/local/cuda-12.2/include -fPIC ' --extra-ldflags='-L/usr/local/cuda-12.2/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-libfreetype --enable-cuvid --enable-nvenc --enable-nonfree --nvcc=/usr/local/cuda-12.2/bin/nvcc --prefix=/usr/local/ffmpeg
 avcodec configuration: --extra-cflags='-I/usr/local/cuda-12.2/include -fPIC ' --extra-ldflags='-L/usr/local/cuda-12.2/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-libfreetype --enable-cuvid --enable-nvenc --enable-nonfree --nvcc=/usr/local/cuda-12.2/bin/nvcc --prefix=/usr/local/ffmpeg
 avformat configuration: --extra-cflags='-I/usr/local/cuda-12.2/include -fPIC ' --extra-ldflags='-L/usr/local/cuda-12.2/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-libfreetype --enable-cuvid --enable-nvenc --enable-nonfree --nvcc=/usr/local/cuda-12.2/bin/nvcc --prefix=/usr/local/ffmpeg
 avdevice configuration: --extra-cflags='-I/usr/local/cuda-12.2/include -fPIC ' --extra-ldflags='-L/usr/local/cuda-12.2/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-libfreetype --enable-cuvid --enable-nvenc --enable-nonfree --nvcc=/usr/local/cuda-12.2/bin/nvcc --prefix=/usr/local/ffmpeg
 avfilter configuration: --extra-cflags='-I/usr/local/cuda-12.2/include -fPIC ' --extra-ldflags='-L/usr/local/cuda-12.2/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-libfreetype --enable-cuvid --enable-nvenc --enable-nonfree --nvcc=/usr/local/cuda-12.2/bin/nvcc --prefix=/usr/local/ffmpeg
 swscale configuration: --extra-cflags='-I/usr/local/cuda-12.2/include -fPIC ' --extra-ldflags='-L/usr/local/cuda-12.2/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-libfreetype --enable-cuvid --enable-nvenc --enable-nonfree --nvcc=/usr/local/cuda-12.2/bin/nvcc --prefix=/usr/local/ffmpeg
 swresample configuration: --extra-cflags='-I/usr/local/cuda-12.2/include -fPIC ' --extra-ldflags='-L/usr/local/cuda-12.2/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-libfreetype --enable-cuvid --enable-nvenc --enable-nonfree --nvcc=/usr/local/cuda-12.2/bin/nvcc --prefix=/usr/local/ffmpeg
 postproc configuration: --extra-cflags='-I/usr/local/cuda-12.2/include -fPIC ' --extra-ldflags='-L/usr/local/cuda-12.2/lib64 -ldl ' --pkg-config-flags=--static --enable-shared --enable-gpl --enable-libfreetype --enable-cuvid --enable-nvenc --enable-nonfree --nvcc=/usr/local/cuda-12.2/bin/nvcc --prefix=/usr/local/ffmpeg
 libavutil 58. 2.100 / 58. 2.100
 libavcodec 60. 3.100 / 60. 3.100
 libavformat 60. 3.100 / 60. 3.100
 libavdevice 60. 1.100 / 60. 1.100
 libavfilter 9. 3.100 / 9. 3.100
 libswscale 7. 1.100 / 7. 1.100
 libswresample 4. 10.100 / 4. 10.100
 libpostproc 57. 1.100 / 57. 1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/www/wwwroot/pyffmpeg/videos/0/011.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf59.6.100
 Duration: 00:17:48.83, start: 0.000000, bitrate: 4617 kb/s
 Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt470bg/bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 4481 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
 Metadata:
 handler_name : ISO Media file produced by Google Inc.
 vendor_id : [0][0][0][0]
 Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
 Metadata:
 handler_name : ISO Media file produced by Google Inc.
 vendor_id : [0][0][0][0]
Stream mapping:
 Stream #0:0 -> #0:0 (h264 (native) -> hevc (hevc_nvenc))
Press [q] to stop, [?] for help
[hevc_nvenc @ 0x2a577790] Failed to query nvenc max version: unknown error (-756041696): (no details)
Segmentation faul


I have installed FFmpeg, NVIDIA GPU drivers, and SDK. It works fine without using GPU acceleration, but it throws an error when using GPU acceleration.


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