ffmpeg cli wrapper

Wrapper CLI FFmpeg pour Java

par Andrew Brampton (bramp.net) (c) 2013-2024

Une interface fluide pour exécuter FFmpeg depuis Java.

GitHub | Documents sur l'API

Installer

Nous prenons actuellement en charge Java 8 et supérieur. Utilisez Maven pour installer la dépendance.

< dependency >
  < groupId >net.bramp.ffmpeg</ groupId >
  < artifactId >ffmpeg</ artifactId >
  < version >0.8.0</ version >
</ dependency >

Usage

Encodage vidéo

Code:

 FFmpeg ffmpeg = new FFmpeg ( "/path/to/ffmpeg" );
FFprobe ffprobe = new FFprobe ( "/path/to/ffprobe" );

FFmpegBuilder builder = new FFmpegBuilder ()

  . setInput ( "input.mp4" )     // Filename, or a FFmpegProbeResult
  . done ()
  . overrideOutputFiles ( true ) // Override the output if it exists

  . addOutput ( "output.mp4" )   // Filename for the destination
    . setFormat ( "mp4" )        // Format is inferred from filename, or can be set
    . setTargetSize ( 250_000 )  // Aim for a 250KB file

    . disableSubtitle ()       // No subtiles

    . setAudioChannels ( 1 )         // Mono audio
    . setAudioCodec ( "aac" )        // using the aac codec
    . setAudioSampleRate ( 48_000 )  // at 48KHz
    . setAudioBitRate ( 32768 )      // at 32 kbit/s

    . setVideoCodec ( "libx264" )     // Video using x264
    . setVideoFrameRate ( 24 , 1 )     // at 24 frames per second
    . setVideoResolution ( 640 , 480 ) // at 640x480 resolution

    . setStrict ( FFmpegBuilder . Strict . EXPERIMENTAL ) // Allow FFmpeg to use experimental specs
  . done ();

FFmpegExecutor executor = new FFmpegExecutor ( ffmpeg , ffprobe );

// Run a one-pass encode
executor . createJob ( builder ). run ();

// Or run a two-pass encode (which is better quality at the cost of being slower)
executor . createTwoPassJob ( builder ). run ();

Obtenir des informations sur les médias

Code:

 FFprobe ffprobe = new FFprobe ( "/path/to/ffprobe" );
FFmpegProbeResult probeResult = ffprobe . probe ( "input.mp4" );

FFmpegFormat format = probeResult . getFormat ();
System . out . format ( "%nFile: '%s' ; Format: '%s' ; Duration: %.3fs" , 
 format . filename ,
 format . format_long_name ,
 format . duration
);

FFmpegStream stream = probeResult . getStreams (). get ( 0 );
System . out . format ( "%nCodec: '%s' ; Width: %dpx ; Height: %dpx" ,
 stream . codec_long_name ,
 stream . width ,
 stream . height
);

Progressez lors de l'encodage

 FFmpegExecutor executor = new FFmpegExecutor ( ffmpeg , ffprobe );

FFmpegProbeResult in = ffprobe . probe ( "input.flv" );

FFmpegBuilder builder = new FFmpegBuilder ()
 . setInput ( in ) // Or filename
 . done ()
 . addOutput ( "output.mp4" )
 . done ();

FFmpegJob job = executor . createJob ( builder , new ProgressListener () {

 // Using the FFmpegProbeResult determine the duration of the input
 final double duration_ns = in . getFormat (). duration * TimeUnit . SECONDS . toNanos ( 1 );

 @ Override
 public void progress ( Progress progress ) {
  double percentage = progress . out_time_ns / duration_ns ;

  // Print out interesting information about the progress
  System . out . println ( String . format (
   "[%.0f%%] status:%s frame:%d time:%s ms fps:%.0f speed:%.2fx" ,
   percentage * 100 ,
   progress . status ,
   progress . frame ,
   FFmpegUtils . toTimecode ( progress . out_time_ns , TimeUnit . NANOSECONDS ),
   progress . fps . doubleValue (),
   progress . speed
  ));
 }
});

job . run ();

Construction et publication

Si vous souhaitez apporter des modifications, la construction et la publication sont simples :

 # To build
mvn

# To test
mvn test

# To release (pushing jar to maven central)
# (don't forget to set up your ~/.m2/settings.xml)
mvn release:prepare
mvn release:perform

# To publish javadoc
git checkout ffmpeg-0.x
mvn clean javadoc:aggregate scm-publish:publish-scm

Dépôts de bosses

 # Update Maven Plugins
mvn versions:display-plugin-updates

# Library Dependencies
mvn versions:display-dependency-updates 

Installez FFmpeg sur Ubuntu

Nous ne prenons en charge que le FFmpeg original, pas la version libav. Avant Ubuntu 12.04, et dans 15.04 et versions ultérieures, le FFmpeg original est livré. Si vous devez exécuter sur une version avec libav, vous pouvez installer FFmpeg à partir d'un PPA ou en utilisant la version statique. Plus d'informations ici

Impliquez-vous

Nous apprécions les contributions. Veuillez consulter le suivi des problèmes. Si vous voyez quelque chose sur lequel vous souhaitez travailler, veuillez soit commenter le problème, soit simplement envoyer une pull request. Vous voulez travailler sur autre chose, alors ouvrez simplement un ticket et nous pourrons en discuter ! Nous apprécions les améliorations de la documentation, le nettoyage du code ou les nouvelles fonctionnalités. Veuillez noter que tout le travail est effectué sur une base bénévole, nous pouvons donc mettre du temps à répondre.

Licence (Licence BSD simplifiée)

 Copyright (c) 2013-2024, Andrew Brampton
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.