src/main/java/eu/svjatoslav/meviz/encoder/converters/AvconvVideo.java

   1 /*
   2  * Meviz - Various tools collection to work with multimedia.
   3  * Copyright (C) 2012, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of version 2 of the GNU General Public License
   7  * as published by the Free Software Foundation.
   8  */
   9
  10 package eu.svjatoslav.meviz.encoder.converters;
  11
  12 import java.io.File;
  13 import java.util.List;
  14
  15 import eu.svjatoslav.meviz.encoder.BitrateParameter;
  16 import eu.svjatoslav.meviz.encoder.BitrateParameter.bitrate;
  17 import eu.svjatoslav.meviz.encoder.EncodingOptions;
  18
  19 public class AvconvVideo extends AbstractConverter {
  20
  21         private String constructCodecParamsString(final EncodingOptions options,
  22                         final int videoBitrate, final int audioBitrate,
  23                         final String videoCodec, final String audioCodec) {
  24
  25                 final StringBuffer codecParams = new StringBuffer();
  26
  27                 if (audioCodec == null)
  28                         codecParams.append("-an ");
  29                 else
  30                         codecParams.append("-acodec " + audioCodec + " ");
  31
  32                 codecParams.append("-vcodec " + videoCodec + " ");
  33
  34                 if (videoBitrate != -1)
  35                         codecParams.append("-b " + videoBitrate + "k ");
  36
  37                 if (audioBitrate != -1)
  38                         codecParams.append("-b:a " + audioBitrate + "k ");
  39
  40                 if (options.isDeinterlace())
  41                         codecParams.append("-filter:v yadif ");
  42
  43                 if (options.getTargetFps() != null)
  44                         codecParams.append("-r " + options.getTargetFps() + " ");
  45
  46                 return codecParams.toString();
  47         }
  48
  49         private int getAudioBitrateValue(final BitrateParameter.bitrate bitRate) {
  50                 switch (bitRate) {
  51                 case LOW:
  52                         return 128;
  53
  54                 case MEDIUM:
  55                         return 160;
  56
  57                 case HIGH:
  58                         return 320;
  59
  60                 case COPY:
  61                         return -1;
  62
  63                 case NONE:
  64                         return -1;
  65
  66                 default:
  67                         throw new RuntimeException("Audio bitrate: " + bitRate
  68                                         + " is not supported.");
  69                 }
  70         }
  71
  72         @Override
  73         public String getCommand(final File inputFile, final File targetFile,
  74                         final EncodingOptions options, final String targetFormat) {
  75
  76                 int videoBitrate = getVideoBitrateValue(options.getVideoBitrate());
  77                 int audioBitrate = getAudioBitrateValue(options.getAudioBitrate());
  78
  79                 // convert
  80                 final StringBuffer codecParams = new StringBuffer();
  81
  82                 String videoCodec = "libx264";
  83                 String audioCodec = "libmp3lame";
  84
  85                 if (targetFormat.equals("webm")) {
  86                         videoCodec = "vp8";
  87                         audioCodec = "opus";
  88                         codecParams.append("-s 800x600 ");
  89                 }
  90
  91                 if (options.getVideoBitrate() == bitrate.COPY)
  92                         videoCodec = "copy";
  93
  94                 if (options.getAudioBitrate() == bitrate.COPY)
  95                         audioCodec = "copy";
  96
  97                 if (options.getAudioBitrate() == bitrate.NONE)
  98                         audioCodec = null;
  99
 100                 if (options.isForPortablePlayer()) {
 101                         videoBitrate = 1000;
 102                         audioBitrate = 128;
 103                         videoCodec = "libxvid";
 104
 105                         // reduce resolution
 106                         codecParams.append("-s 640x480 ");
 107
 108                         // enforce maximum keyframe interval
 109                         codecParams.append("-g 150 ");
 110                 }
 111
 112                 codecParams.append(constructCodecParamsString(options, videoBitrate,
 113                                 audioBitrate, videoCodec, audioCodec));
 114
 115                 return "avconv -i \"" + inputFile.getAbsolutePath() + "\" "
 116                                 + codecParams.toString() + "\"" + targetFile.getAbsolutePath()
 117                                 + "\"";
 118         }
 119
 120         @Override
 121         public List<String> getSourceFileExtensions() {
 122                 return toList("mkv", "mts", "mp4", "avi", "mpg", "mpeg", "vob", "m4v",
 123                                 "webm", "mov");
 124         }
 125
 126         @Override
 127         public List<String> getTargetFileExtensions() {
 128                 return toList("mkv", "mts", "mp4", "avi", "mpg", "mpeg", "vob", "m4v",
 129                                 "webm", "mov");
 130         }
 131
 132         private int getVideoBitrateValue(final BitrateParameter.bitrate bitRate) {
 133                 switch (bitRate) {
 134                 case LOW:
 135                         return 1000;
 136
 137                 case MEDIUM:
 138                         return 4000;
 139
 140                 case HIGH:
 141                         return 16000;
 142
 143                 case COPY:
 144                         return -1;
 145
 146                 default:
 147                         throw new RuntimeException("Video bitrate: " + bitRate
 148                                         + " is not supported.");
 149                 }
 150         }
 151
 152         @Override
 153         public boolean isTerminalMandatory() {
 154                 return true;
 155         }
 156
 157 }