Recherche avancée

Sur d’autres sites (6290)

• combine specific mpeg-dash segments (ex int.mp4 + seg_1.m4s +seg_3.m4s) into one single mp4 file

  16 avril 2019, par Liquid

  I am working one video transcoding in FFmpeg and MP4Box. Currently I am trying to combine/merge/concatenate specific MPEG-DASH video segments(m4s ex:int.mp4, seg_1.m4s, seg2,m4s,sge5.m4s) into one mp4 file.

  This the example of what I am trying to do.

  I have followed this thread ("Combine MPEG-DASH segments (ex, init.mp4 + segments.m4s) back to a full source.mp4 ?") but there is a problem while combining the specific m4s segments, while doing that it frames feazed in after seg2 and in seg5 it played again.

  Reference : FFmpeg example

• ffmpeg : Remove an exact hex color ?

  26 octobre 2022, par Andrew Young

  i'm editing .gifs and it is a MUST that we remove a specific hex encoding from the gif and place the background behind it.

  


  This is all working fine, the problem is that 'colorkey' arg at its lowest default value (0.01) removes 'similar colors' to your input, not the exact value. So it's screwing up the entire gif by removing colors we don't need removed !

  


  Also tried chromakey, which does claim to be exact in the docs. Just doesn't work for gifs apparently, we're getting black pixels everywhere.

  


  This should be an easy problem, so how do we remove an exact hex color on a .gif ? Code below, although it doubt it helps. Thanks.

  


  -i background.png -i gifInfo.gif -i foreground.png -filter_complex '[0:v]split [a][b];[a] palettegen=stats_mode=full[p];[b][p] paletteuse=new=1[pbgout];[pbgout]scale=w=350:h=-1,pad=1080:1080:x=350:y=470[bgout];[1:v]colorkey=0x080806:[ckout];[bgout][ckout]overlay[olout];[olout][2:v]overlay[oloutb];[oloutb]split[s0][s1];[s0]palettegen=stats_mode=full[p];[s1][p]paletteuse=dither=none' -y testingGif.gif


  


• Unknown encoder 'libx264' in flutter android app

  17 juillet 2023, par ololo

  I am trying to use libx264 via ffmpeg_kit_flutter with full-gpl options in my Flutter app. However, when I start the app on Android, I keep getting the error :

  


  "Unknown encoder 'libx264'."

  


  Here is my current setup :

  


  In android/build.gradle file :

  


  buildscript {
    ext {
        ffmpegKitPackage = "full-gpl" // Notice I specified the option here
        kotlin_version = '1.8.0'
    }

    repositories {
        google()
        mavenCentral()
    }
    // .....
}


  


  In android/app/build.gradle file :

  


  android {
    compileSdkVersion 33

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    packagingOptions { 
        // I specified the libx264 in this packageOptions block
        pickFirst 'lib/x86_64/libx264.so'
        pickFirst 'lib/arm64-v8a/libx264.so'
        pickFirst 'lib/armeabi-v7a/libx264.so'
        pickFirst 'lib/x86/libx264.so'
    }
}


  


  In pubspec.yaml file :

  


  dependencies:
  ffmpeg_kit_flutter: ^5.1.0


  


  What could be the issue causing the "Unknown encoder 'libx264'" error ? Any help would be appreciated. Thank you !