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• FFmpeg : use absolute path in "metadata=print:file="

  27 octobre 2022, par Axel Herrmann

  I'm using FFmpeg to extract frames of a video and therefore I want to print the metadata of the video to a text file first (to get the scene\ value of each frame).

  


  This already works for me with something like :

  


  ffmpeg -i input.mp4 -vf "select='gte(scene,0)',metadata=print:file=scenescores.txt" -an -f null -


  


  Because I'm using all this inside of a Java application I want to pass an absolute path (of an temp directory) to print:file= instead of the currently relative one which will write it to the root directory of the project.

  


  But when I try to specify an absolute path like D:\scenescores.txt I get the following error :

  


  [metadata @ 00000203282ff0c0] Unable to parse option value "scenescores.txt" as boolean
[metadata @ 00000203282ff0c0] Error setting option direct to value scenescores.txt.
[Parsed_metadata_1 @ 00000203269bdf00] Error applying options to the filter.
[AVFilterGraph @ 0000020328020840] Error initializing filter 'metadata' with args 'print:file=D:\scenescores.txt'


  


  Is there any way to achieve printing to an absolute path ? Am I missing some escape rules or something ?

  


• Loading shared libraries with Gradle 2.2.1

  12 février 2015, par Gabriel Furstenheim

  I’m trying to use a shared library, libavcodec-56.so, in my Android app and I can’t find the way. I’m using Gradle 2.2.1 and Android Studio 1.0. What I have done so far is the following :

  -I built libavcodec-56.so from source code using a NDK toolchain.

  -I copied libavcodec-56.so into src/main/jniLibs/armeabi

  -I’m able to create a .c file in the project and communicate with the java files using private native void nameOfTheNativeMethod()

  -I can load some external libraries like ldLibs "m"

  However, if I try to use #include <libavcodec></libavcodec>avcodec.h> I get the error

  No such file or directory
  
       #include <libavcodec></libavcodec>avcodec.h>

  My gradle file looks like :

  apply plugin: 'com.android.library'
  
  
  
  android {
  
      compileSdkVersion 21
  
      buildToolsVersion "21.1.2"
  
  
  
      defaultConfig {
  
          minSdkVersion 15
  
          targetSdkVersion 21
  
          versionCode 1
  
          versionName "1.0"
  
          ndk {
  
              moduleName "ffmpeg"
  
              cFlags "-std=c99"   
  
              ldLibs "log",  "m" 
  
          }
  
      }
  
  
  
      sourceSets.main {
  
          jni.srcDirs = ["src/main/jni"];
  
          //jniLibs.srcDirs = ['src/main/jniLibs'];
  
      }
  
  
  
  
  
      buildTypes {
  
          release {
  
              minifyEnabled false
  
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  
          }
  
      }
  
  }
  
  
  
  dependencies {
  
      compile fileTree(dir: 'libs', include: ['*.jar'])
  
      compile 'com.android.support:appcompat-v7:21.0.3'
  
  
  
  }

  Any ideas ?

  Thanks in advance

• avcodec/libx265 : unbreak build for X265_BUILD >= 213

  5 octobre 2024, par Gyan Doshi

  avcodec/libx265 : unbreak build for X265_BUILD >= 213
  Earlier, x265 made an API change to support alpha and
  
  other multiple layer pictures. We added guards to accommodate
  
  that in 1f801dfdb5
  They have now reverted that API change in
  
  https://bitbucket.org/multicoreware/x265_git/commits/78e5b703b1
  Updated our wrapper guards to unbreak build again.
  

  • [DH] libavcodec/libx265.c