ffmpeg cli wrapper

Envoltorio CLI de FFmpeg para Java

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

Una interfaz fluida para ejecutar FFmpeg desde Java.

GitHub | Documentos API

Instalar

Actualmente admitimos Java 8 y superiores. Utilice Maven para instalar la dependencia.

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

Uso

Codificación de vídeo

Código:

 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 ();

Obtener información de los medios

Código:

 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
);

Obtenga progreso mientras codifica

 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 ();

Construcción y lanzamiento

Si desea realizar cambios, crear y publicar es sencillo:

 # 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

Departamentos de golpes

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

# Library Dependencies
mvn versions:display-dependency-updates 

Instalar FFmpeg en Ubuntu

Solo admitimos el FFmpeg original, no la versión libav. Antes de Ubuntu 12.04, y en 15.04 y posteriores, se envía el FFmpeg original. Si tiene que ejecutar una versión con libav, puede instalar FFmpeg desde un PPA o utilizando la compilación estática. Más información aquí

Complicarse

Damos la bienvenida a las contribuciones. Consulte el rastreador de problemas. Si ve algo en lo que desea trabajar, comente el problema o simplemente envíe una solicitud de extracción. Si desea trabajar en otra cosa, simplemente abra un problema y ¡podremos discutirlo! Apreciamos mejoras en la documentación, limpieza de código o nuevas funciones. Tenga en cuenta que todo el trabajo se realiza de forma voluntaria, por lo que podemos tardar en responder.

Licencia (Licencia BSD simplificada)

 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.