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FFmpegAndroid/app/src/main/java/com/frank/ffmpeg/util/FFmpegUtil.java

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34 KiB

package com.frank.ffmpeg.util;
import com.frank.ffmpeg.FFmpegApplication;
import com.frank.ffmpeg.model.VideoLayout;
import java.util.List;
import java.util.Locale;
/**
* ffmpeg tool: assemble the complete command
* Created by frank on 2018/1/23.
*/
public class FFmpegUtil {
private static String[] insert(String[] cmd, int position, String inputPath) {
return insert(cmd, position, inputPath, null);
}
/**
* insert inputPath and outputPath into target array
*/
private static String[] insert(String[] cmd, int position, String inputPath, String outputPath) {
if (cmd == null || inputPath == null || position < 2) {
return cmd;
}
int len = (outputPath != null ? (cmd.length + 2) : (cmd.length + 1));
String[] result = new String[len];
System.arraycopy(cmd, 0, result, 0, position);
result[position] = inputPath;
System.arraycopy(cmd, position, result, position + 1, cmd.length - position);
if (outputPath != null) {
result[result.length - 1] = outputPath;
}
return result;
}
public static String[] insert(String[] cmd, int position1, String inputPath1,
int position2, String inputPath2, String outputPath) {
if (cmd == null || inputPath1 == null || position1 < 2 || inputPath2 == null || position2 < 4) {
return cmd;
}
int len = (outputPath != null ? (cmd.length + 3) : (cmd.length + 2));
String[] result = new String[len];
System.arraycopy(cmd, 0, result, 0, position1);
result[position1] = inputPath1;
System.arraycopy(cmd, position1, result, position1 + 1, position2 - position1 - 1);
result[position2] = inputPath2;
System.arraycopy(cmd, position2 - 1, result, position2 + 1, cmd.length - (position2 - 1));
if (outputPath != null) {
result[result.length - 1] = outputPath;
}
return result;
}
/**
* transform audio, according to your assigning the output format
*
* @param inputPath input file
* @param outputPath output file
* @return transform success or not
*/
public static String[] transformAudio(String inputPath, String outputPath) {
String[] result = new String[4];
result[0] = "ffmpeg";
result[1] = "-i";
result[2] = inputPath;
result[3] = outputPath;
return result;
}
public static String[] transformAudio(String inputPath, String acodec, String outputPath) {
String transformAudioCmd = "ffmpeg -i -acodec %s -ac 2 -ar 44100";
transformAudioCmd = String.format(transformAudioCmd, acodec);
return insert(transformAudioCmd.split(" "), 2, inputPath, outputPath);
}
/**
* cut audio, you could assign the startTime and duration which you want to
*
* @param inputPath input file
* @param startTime start time in the audio(unit is second)
* @param duration start time(unit is second)
* @param outputPath output file
* @return cut success or not
*/
public static String[] cutAudio(String inputPath, float startTime, float duration, String outputPath) {
String cutAudioCmd = "ffmpeg -i -ss %f -t %f -vn";
cutAudioCmd = String.format(Locale.getDefault(), cutAudioCmd, startTime, duration);
return insert(cutAudioCmd.split(" "), 2, inputPath, outputPath);
}
/**
* concat all the audio together
*
* @param fileList list of files
* @param outputPath output file
* @return concat success or not
*/
public static String[] concatAudio(List<String> fileList, String outputPath) {
if (fileList == null || fileList.size() == 0) {
return null;
}
StringBuilder concatBuilder = new StringBuilder();
concatBuilder.append("concat:");
for (String file : fileList) {
concatBuilder.append(file).append("|");
}
String concatStr = concatBuilder.substring(0, concatBuilder.length() - 1);
String concatAudioCmd = "ffmpeg -i -acodec copy"; // "ffmpeg -i -acodec libmp3lame"
return insert(concatAudioCmd.split(" "), 2, concatStr, outputPath);
}
/**
* mix multiple audio inputs into a single output
*
*/
public static String[] mixAudio(String inputPath, String mixPath, String outputPath) {
//mixing formula: value = sample1 + sample2 - ((sample1 * sample2) >> 0x10)
return mixAudio(inputPath, mixPath, 0, 0, false, outputPath);
}
public static String[] mixAudio(String inputPath, String mixPath, int weight1, int weight2,
boolean disableThumb, String outputPath) {
//duration: first shortest longest
//weight: adjust weight(volume) of each audio stream
//disableThumb:(-vn)if not disable, it may cause incorrect mixing
int len = 8;
String amix = "amix=inputs=2:duration=longest";
if (disableThumb) len += 1;
String[] mixAudioCmd = new String[len];
mixAudioCmd[0] = "ffmpeg";
mixAudioCmd[1] = "-i";
mixAudioCmd[2] = inputPath;
mixAudioCmd[3] = "-i";
mixAudioCmd[4] = mixPath;
mixAudioCmd[5] = "-filter_complex";
if (weight1 > 0 && weight2 > 0) {
String weight = ":weights=" + "'" + weight1 + " " + weight2 + "'";
amix += weight;
}
mixAudioCmd[6] = amix;
if (disableThumb) mixAudioCmd[7] = "-vn";
mixAudioCmd[len-1] = outputPath;
return mixAudioCmd;
}
/**
* merge multiple audio streams into a single multi-channel stream
*
*/
public static String[] mergeAudio(String inputPath, String mergePath, String outputPath) {
String mergeCmd = "ffmpeg -i %s -i %s -filter_complex [0:a][1:a]amerge=inputs=2[aout] -map [aout] %s";
mergeCmd = String.format(mergeCmd, inputPath, mergePath, outputPath);
return mergeCmd.split(" ");
}
/**
* Set echo and delay effect
*
* @param inputPath input file
* @param delay delay to play
* @param outputPath output file
*/
public static String[] audioEcho(String inputPath, int delay, String outputPath) {
// in_gain (0, 1], Default is 0.6
// out_gain (0, 1], Default is 0.3
// delays (0 - 90000]. Default is 1000
// decays (0 - 1.0]. Default is 0.5
String echoCmd = "ffmpeg -i -af aecho=0.8:0.8:%d:0.5";
echoCmd = String.format(Locale.getDefault(), echoCmd, delay);
return insert(echoCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Set tremolo effect, sinusoidal amplitude modulation
*
* @param inputPath input file
* @param frequency frequency
* @param depth depth
* @param outputPath output file
*/
public static String[] audioTremolo(String inputPath, int frequency, float depth, String outputPath) {
// frequency [0.1, 20000.0], Default is 5
// depth (0, 1], Default is 0.5
String tremoloCmd = "ffmpeg -i -af tremolo=%d:%f";
tremoloCmd = String.format(Locale.getDefault(), tremoloCmd, frequency, depth);
return insert(tremoloCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Denoise audio samples with FFT
*
* @param inputPath input file
* @param outputPath output file
*/
public static String[] audioDenoise(String inputPath, String outputPath) {
// nr: noise reduction in dB, [0.01 to 97], Default value is 12 dB
// nf: noise floor in dB, [-80 to -20], Default value is -50 dB
// nt: noise type {w:white noise v:vinyl noise s:shellac noise}
String fftDenoiseCmd = "ffmpeg -i -af afftdn";
return insert(fftDenoiseCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Detect silence of a chunk of audio
*
* @param inputPath input file
*/
public static String[] audioSilenceDetect(String inputPath) {
// silence_start: 268.978
// silence_end: 271.048 | silence_duration: 2.06975
String silenceCmd = "ffmpeg -i -af silencedetect=noise=0.0001 -f null -";
return insert(silenceCmd.split(" "), 2, inputPath);
}
/**
* Change volume of a chunk of audio
*
* @param inputPath input file
* @param volume volume
* @param outputPath output file
*/
public static String[] audioVolume(String inputPath, float volume, String outputPath) {
// output_volume = volume * input_volume
String volumeCmd = "ffmpeg -i -af volume=%f";
volumeCmd = String.format(Locale.getDefault(), volumeCmd, volume);
return insert(volumeCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Apply 18 band of equalizer into audio
*
* @param inputPath input file
* @param bandList bandList
* @param outputPath output file
*/
public static String[] audioEqualizer(String inputPath, List<String> bandList, String outputPath) {
// unit: Hz gain:0-20
/*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1b | 2b | 3b | 4b | 5b | 6b | 7b | 8b | 9b |
| 65 | 92 | 131 | 185 | 262 | 370 | 523 | 740 | 1047 |
|- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 10b | 11b | 12b | 13b | 14b | 15b | 16b | 17b | 18b |
| 1480 | 2093 | 2960 | 4186 | 5920 | 8372 | 11840 | 16744 | 20000 |
|- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
StringBuilder builder = new StringBuilder();
for (String band:bandList) {
builder.append(band).append(":");
}
builder.deleteCharAt(builder.length() - 1);
// "ffmpeg -i %s -af superequalizer=%s -y %s"
String equalizerCmd = "ffmpeg -i -af superequalizer=%s -y";
equalizerCmd = String.format(Locale.getDefault(), equalizerCmd, builder.toString());
return insert(equalizerCmd.split(" "), 2, inputPath, outputPath);
}
/**
* mux audio and video together
*
* @param videoFile the file of pure video
* @param audioFile the file of pure audio
* @param copy copy codec
* @param muxFile output file
* @return mux success or not
*/
public static String[] mediaMux(String videoFile, String audioFile, boolean copy, String muxFile) {
String mediaMuxCmd;
if (copy) {
mediaMuxCmd = "ffmpeg -i %s -i %s -codec copy -y %s";
} else {
mediaMuxCmd = "ffmpeg -i %s -i %s -y %s";
}
mediaMuxCmd = String.format(Locale.getDefault(), mediaMuxCmd, videoFile, audioFile, muxFile);
return mediaMuxCmd.split(" ");
}
/**
* extract audio from media file
*
* @param inputPath input file
* @param outputPath output file
* @return demux audio success or not
*/
public static String[] extractAudio(String inputPath, String outputPath) {
// -vn: disable video
// multi audio track: ffmpeg -i input.mp4 -map 0:1 -vn output.mp3
String extractAudioCmd = "ffmpeg -i -vn";
return insert(extractAudioCmd.split(" "), 2, inputPath, outputPath);
}
/**
* extract pure video from media file
*
* @param inputPath input file
* @param outputPath output file
* @return demux video success or not
*/
public static String[] extractVideo(String inputPath, String outputPath) {
//-an: disable audio
String extractVideoCmd = "ffmpeg -i -vcodec copy -an";
return insert(extractVideoCmd.split(" "), 2, inputPath, outputPath);
}
/**
* transform video, according to your assigning the output format
*
* @param inputPath input file
* @param outputPath output file
* @return transform video success or not
*/
public static String[] transformVideo(String inputPath, String outputPath) {
//just copy codec
// String transformVideoCmd = "ffmpeg -i %s -vcodec copy -acodec copy %s";
// assign the frameRate, bitRate and resolution
// String transformVideoCmd = "ffmpeg -i %s -r 25 -b 200 -s 1080x720 %s";
// assign the encoder
// ffmpeg -i %s -vcodec libx264 -acodec libmp3lame %s
String transformVideoCmd = "ffmpeg -i -vcodec libx264 -acodec libmp3lame";
return insert(transformVideoCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Using FFmpeg to transform video, with re-encode
*
* @param inputPath the source file
* @param outputPath target file
* @return transform video success or not
*/
public static String[] transformVideoWithEncode(String inputPath, String outputPath) {
return transformVideoWithEncode(inputPath, 0, 0, outputPath);
}
/**
* Using FFmpeg to transform video, with re-encode and specific resolution
*
* @param inputPath the source file
* @param width the width of video
* @param height the height of video
* @param outputPath target file
* @return transform video success or not
*/
public static String[] transformVideoWithEncode(String inputPath, int width, int height, String outputPath) {
String transformVideoCmd;
if (width > 0 && height > 0) {
String scale = "-vf scale=" + width + ":" + height;
transformVideoCmd = "ffmpeg -i -vcodec libx264 -acodec aac " + scale;
} else {
transformVideoCmd = "ffmpeg -i -vcodec libx264 -acodec aac";
}
return insert(transformVideoCmd.split(" "), 2, inputPath, outputPath);
}
/**
* joint every single video together
* @param fileListPath the path file list
* @param outputPath output path
* @return joint video success or not
*/
public static String[] jointVideo(String fileListPath, String outputPath) {
// ffmpeg -f concat -safe 0 -i %s -c copy %s
String jointVideoCmd = "ffmpeg -f concat -safe 0 -i -c copy";
return insert(jointVideoCmd.split(" "), 6, fileListPath, outputPath);
}
/**
* cut video, you could assign the startTime and duration which you want to
*
* @param inputPath input file
* @param startTime startTime in the video(unit is second)
* @param duration duration
* @param outputPath output file
* @return cut video success or not
*/
public static String[] cutVideo(String inputPath, float startTime, float duration, String outputPath) {
// -map 0 -codec copy (copy all tracks)
// -map 0:v -vcodec copy (copy track of video)
// -map 0:a -acodec copy (copy all tracks of audio)
// -map 0:s -scodec copy (copy all tracks of subtitle)
// ffmpeg -ss %f -accurate_seek -t %f -i %s -map 0 -codec copy -avoid_negative_ts 1 %s
String cutVideoCmd = "ffmpeg -ss %f -accurate_seek -t %f -i -map 0 -codec copy -avoid_negative_ts 1";
cutVideoCmd = String.format(Locale.getDefault(), cutVideoCmd, startTime, duration);
return insert(cutVideoCmd.split(" "), 7, inputPath, outputPath);
}
/**
* screenshot from video, you could assign the specific time
*
* @param inputPath input file
* @param offset which time you want to shot
* @param outputPath output file
* @return screenshot success or not
*/
public static String[] screenShot(String inputPath, float offset, String outputPath) {
// ffmpeg -ss %f -i %s -f image2 -vframes 1 -an %s
String screenShotCmd = "ffmpeg -ss %f -i -f image2 -vframes 1 -an";
screenShotCmd = String.format(Locale.getDefault(), screenShotCmd, offset);
return insert(screenShotCmd.split(" "), 4, inputPath, outputPath);
}
private static String obtainOverlay(int offsetX, int offsetY, int location) {
switch (location) {
case 2:
return "overlay='(main_w-overlay_w)-" + offsetX + ":" + offsetY + "'";
case 3:
return "overlay='" + offsetX + ":(main_h-overlay_h)-" + offsetY + "'";
case 4:
return "overlay='(main_w-overlay_w)-" + offsetX + ":(main_h-overlay_h)-" + offsetY + "'";
case 1:
default:
return "overlay=" + offsetX + ":" + offsetY;
}
}
/**
* add watermark with image to video, you could assign the location and bitRate
*
* @param inputPath input file
* @param imgPath the path of the image
* @param location the location in the video(1:top left 2:top right 3:bottom left 4:bottom right)
* @param bitRate bitRate
* @param offsetXY the offset of x and y in the video
* @param outputPath output file
* @return add watermark success or not
*/
public static String[] addWaterMarkImg(String inputPath, String imgPath, int location, int bitRate,
int offsetXY, String outputPath) {
String mBitRate = bitRate + "k";
String overlay = obtainOverlay(offsetXY, offsetXY, location);
String waterMarkCmd = "ffmpeg -i -i -b:v %s -filter_complex %s -preset:v superfast";
waterMarkCmd = String.format(waterMarkCmd, mBitRate, overlay);
return insert(waterMarkCmd.split(" "), 2, inputPath, 4, imgPath, outputPath);
}
/**
* add watermark with gif to video, you could assign the location and bitRate
*
* @param inputPath input file
* @param imgPath the path of the gif
* @param location the location in the video(1:top left 2:top right 3:bottom left 4:bottom right)
* @param bitRate bitRate
* @param offsetXY the offset of x and y in the video
* @param outputPath output file
* @return add watermark success or not
*/
public static String[] addWaterMarkGif(String inputPath, String imgPath, int location, int bitRate,
int offsetXY, String outputPath) {
String mBitRate = bitRate + "k";
int offset = ScreenUtil.INSTANCE.dp2px(FFmpegApplication.getInstance(), offsetXY);
String overlay = obtainOverlay(offset, offset, location) + ":shortest=1";
String waterMarkCmd = "ffmpeg -i -ignore_loop 0 -i -b:v %s -filter_complex %s -preset:v superfast";
waterMarkCmd = String.format(waterMarkCmd, mBitRate, overlay);
return insert(waterMarkCmd.split(" "), 2, inputPath, 6, imgPath, outputPath);
}
/**
* Remove watermark from video: Suppress logo by a simple interpolation of the surrounding pixels.
* On the other hand, it can be used to mosaic video
*
* @return delogo cmd
*/
public static String[] removeLogo(String inputPath, int x, int y, int width, int height, String outputPath) {
// ffmpeg -i in.mp4 -filter_complex delogo=x=%d:y=%d:w=%d:h=%d out.mp4
String delogoCmd = "ffmpeg -i -filter_complex delogo=x=%d:y=%d:w=%d:h=%d";
delogoCmd = String.format(Locale.getDefault(), delogoCmd, x, y, width, height);
return insert(delogoCmd.split(" "), 2, inputPath, outputPath);
}
/**
* generate a palette for gif
*
* @param inputPath input file
* @param frameRate frameRate of the gif
* @param startTime startTime in the video
* @param duration duration, how long you want to
* @param width width
* @param outputPath output file
* @return generate palette success or not
*/
public static String[] generatePalette(String inputPath, int startTime, int duration,
int frameRate, int width, String outputPath) {
String paletteCmd = "ffmpeg -ss %d -accurate_seek -t %d -i -vf fps=%d,scale=%d:-1:flags=lanczos,palettegen";
paletteCmd = String.format(Locale.getDefault(), paletteCmd, startTime,
duration, frameRate, width);
return insert(paletteCmd.split(" "), 7, inputPath, outputPath);
}
/**
* convert video into gif with palette
*
* @param inputPath input file
* @param palette the palette which will apply to gif
* @param startTime startTime in the video
* @param duration duration, how long you want to
* @param frameRate frameRate of the gif
* @param width width
* @param outputPath output gif
* @return convert gif success or not
*/
public static String[] generateGifByPalette(String inputPath, String palette, int startTime, int duration,
int frameRate, int width, String outputPath) {
String paletteGifCmd = "ffmpeg -ss %d -accurate_seek -t %d -i -i -lavfi fps=%d,scale=%d:-1:flags=lanczos[x];[x][1:v]" +
"paletteuse=dither=bayer:bayer_scale=3";
paletteGifCmd = String.format(Locale.getDefault(), paletteGifCmd, startTime,
duration, frameRate, width);
return insert(paletteGifCmd.split(" "), 7, inputPath, 9, palette, outputPath);
}
/**
* convert s series of pictures into video
*
* @param inputPath input file
* @param frameRate frameRate
* @param outputPath output file
* @return convert success or not
*/
public static String[] pictureToVideo(String inputPath, int frameRate, String outputPath) {
//-f: stand for format
String combineVideo = "ffmpeg -f image2 -r %d -i %simg#d.jpg -vcodec mpeg4 %s";
combineVideo = String.format(Locale.getDefault(), combineVideo, frameRate, inputPath, outputPath);
combineVideo = combineVideo.replace("#", "%");
return combineVideo.split(" ");
}
/**
* convert resolution
*
* @param inputPath input file
* @param resolution resolution
* @param outputPath output file
* @return convert success or not
*/
public static String[] convertResolution(String inputPath, String resolution, String outputPath) {
String convertCmd = "ffmpeg -i -s %s -pix_fmt yuv420p";
convertCmd = String.format(Locale.getDefault(), convertCmd, resolution);
return insert(convertCmd.split(" "), 2, inputPath, outputPath);
}
/**
* encode audio, you could assign the sampleRate and channel
*
* @param inputPath pcm raw audio
* @param outputPath output file
* @param sampleRate sampleRate
* @param channel sound channel: mono channel is 1, stereo channel is 2
* @return encode audio success or not
*/
public static String[] encodeAudio(String inputPath, String outputPath, int sampleRate, int channel) {
String encodeAudioCmd = "ffmpeg -f s16le -ar %d -ac %d -i";
encodeAudioCmd = String.format(Locale.getDefault(), encodeAudioCmd, sampleRate, channel);
return insert(encodeAudioCmd.split(" "), 8, inputPath, outputPath);
}
/**
* join multi videos together
*
* @param input1 input one
* @param input2 input two
* @param videoLayout the layout of video, which could be horizontal or vertical
* @param outputPath output file
* @return join success or not
*/
public static String[] multiVideo(String input1, String input2, String outputPath, int videoLayout) {
String multiVideo = "ffmpeg -i -i -filter_complex hstack";//hstack: horizontal
if (videoLayout == VideoLayout.LAYOUT_VERTICAL) {//vstack: vertical
multiVideo = multiVideo.replace("hstack", "vstack");
}
return insert(multiVideo.split(" "), 2, input1, 4, input2, outputPath);
}
/**
* reverse video
*
* @param inputPath input file
* @param outputPath output file
* @return reverse success or not
*/
public static String[] reverseVideo(String inputPath, String outputPath) {
//-vf reverse: only video reverse, -an: disable audio
//tip: reverse will cost a lot of time, only short video are recommended
String reverseVideo = "ffmpeg -i -vf reverse -an";
return insert(reverseVideo.split(" "), 2, inputPath, outputPath);
}
/**
* noise reduction with video
*
* @param inputPath input file
* @param outputPath output file
* @return noise reduction success or not
*/
public static String[] denoiseVideo(String inputPath, String outputPath) {
String denoiseVideo = "ffmpeg -i -nr 500";
return insert(denoiseVideo.split(" "), 2, inputPath, outputPath);
}
/**
* covert video into a series of pictures
*
* @param inputPath input file
* @param startTime startTime in the video
* @param duration duration, how long you want
* @param frameRate frameRate
* @param outputPath output file
* @return convert success or not
*/
public static String[] videoToImage(String inputPath, int startTime, int duration, int frameRate, String outputPath) {
return videoToImageWithScale(inputPath, startTime, duration, frameRate, 0, outputPath);
}
public static String[] videoToImageWithScale(String inputPath, int startTime, int duration,
int frameRate, int width, String outputPath) {
String toImage;
if (width > 0) {
toImage = "ffmpeg -ss %d -accurate_seek -t %d -i %s -an -vf fps=%d,scale=%d:-1 %s";
toImage = String.format(Locale.CHINESE, toImage, startTime, duration, inputPath, frameRate, width, outputPath);
} else {
toImage = "ffmpeg -ss %d -accurate_seek -t %d -i %s -an -r %d %s";
toImage = String.format(Locale.CHINESE, toImage, startTime, duration, inputPath, frameRate, outputPath);
}
toImage = toImage + "%3d.png";
return toImage.split(" ");
}
/**
* convert videos into picture-in-picture mode
*
* @param inputPath1 input one
* @param inputPath2 input two
* @param outputPath output file
* @param x x coordinate point
* @param y y coordinate point
* @return convert success or not
*/
public static String[] picInPicVideo(String inputPath1, String inputPath2, int x, int y, String outputPath) {
String pipVideo = "ffmpeg -i -i -filter_complex overlay=%d:%d";
pipVideo = String.format(Locale.getDefault(), pipVideo, x, y);
return insert(pipVideo.split(" "), 2, inputPath1, 4, inputPath2, outputPath);
}
/**
* move moov box in the front of mdat box, when moox box is behind mdat box(only mp4)
*
* @param inputPath inputFile
* @param outputPath outputFile
* @return move success or not
*/
public static String[] moveMoovAhead(String inputPath, String outputPath) {
String moovCmd = "ffmpeg -i -movflags faststart -acodec copy -vcodec copy";
return insert(moovCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Change Video from RGB to gray(black & white)
* @param inputPath inputPath
* @param outputPath outputPath
* @return grayCmd
*/
public static String[] toGrayVideo(String inputPath, String outputPath) {
String grayCmd = "ffmpeg -i -vf lutyuv='u=128:v=128'";
return insert(grayCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Photo zoom to video
* @param inputPath inputPath
* @param outputPath outputPath
* @return zoomCmd
*/
public static String[] photoZoomToVideo(String inputPath, String outputPath) {
String zoomCmd = "ffmpeg -loop 1 -i -vf zoompan=z='if(lte(zoom,1.0),1.5,max(1.001,zoom-0.0015))':d=125 -t 8";
return insert(zoomCmd.split(" "), 4, inputPath, outputPath);
}
/**
* using FFprobe to parse the media format
*
* @param inputPath inputFile
* @return probe success or not
*/
public static String[] probeFormat(String inputPath) {
// ffprobe -i hello.mp4 -show_streams -show_format -print_format json"
String ffprobeCmd = "ffprobe -i -show_streams -show_format -print_format json";
return insert(ffprobeCmd.split(" "), 2, inputPath);
}
/**
* Changing the speed of playing, speed range at 0.5-2 in audio-video mode.
* However, in pure video mode, the speed range at 0.25-4
* @param inputPath the inputFile of normal speed
* @param outputPath the outputFile which you want to change speed
* @param speed speed of playing
* @param pureVideo whether pure video or not, default false
* @return change speed success or not
*/
public static String[] changeSpeed(String inputPath, String outputPath, float speed, boolean pureVideo) {
//audio atempo: 0.5--2
//video pts:0.25--4
if (pureVideo) {
if (speed > 4 || speed < 0.25) {
throw new IllegalArgumentException("speed range is 0.25--4");
}
} else {
if (speed > 2 || speed < 0.5) {
throw new IllegalArgumentException("speed range is 0.5--2");
}
}
float ptsFactor = 1/speed;
String speedCmd;
if (pureVideo) {
speedCmd = "ffmpeg -i -filter_complex [0:v]setpts=%.2f*PTS[v] -map [v]";
speedCmd = String.format(Locale.getDefault(), speedCmd, ptsFactor);
} else {
speedCmd = "ffmpeg -i -filter_complex [0:v]setpts=%.2f*PTS[v];[0:a]atempo=%.2f[a] -map [v] -map [a]";
speedCmd = String.format(Locale.getDefault(), speedCmd, ptsFactor, speed);
}
return insert(speedCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Changing the speed of playing, speed range at 0.5-2 in audio.
* @param inputPath the inputFile of normal speed
* @param outputPath the outputFile which you want to change speed
* @param speed speed of playing
* @return change speed success or not
*/
public static String[] changeAudioSpeed(String inputPath, String outputPath, float speed) {
// atempo range [0.5, 100.0]
if (speed > 100 || speed < 0.5) {
throw new IllegalArgumentException("audio speed range is from 0.5 to 100");
}
String speedCmd = "ffmpeg -i -filter_complex atempo=%.2f";
speedCmd = String.format(Locale.getDefault(), speedCmd, speed);
return insert(speedCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Rebuild the keyframe index of FLV, make it seekable
* @param inputPath inputFile
* @param outputPath targetFile
* @return command of building flv index
*/
public static String[] buildFlvIndex(String inputPath, String outputPath) {
String buildIndex = "ffmpeg -i -flvflags add_keyframe_index";
return insert(buildIndex.split(" "), 2, inputPath, outputPath);
}
/**
* Insert the picture into the header of video, which as a thumbnail
* @param inputPath inputFile
* @param picturePath the path of thumbnail
* @param outputPath targetFile
* @return command of inserting picture
*/
public static String[] insertPicIntoVideo(String inputPath, String picturePath, String outputPath) {
String insertPicCmd = "ffmpeg -i -i -map 0 -map 1 -c copy -c:v:1 png -disposition:v:1 attached_pic";
return insert(insertPicCmd.split(" "), 2, inputPath, 4, picturePath, outputPath);
}
public static String[] addSubtitleIntoVideo(String inputPath, String subtitlePath, String outputPath) {
String subtitleCmd = "ffmpeg -i -i -map 0:v -map 0:a -map 1:s -c copy";
return insert(subtitleCmd.split(" "), 2, inputPath, 4, subtitlePath, outputPath);
}
/**
* Using one input file to push multi streams.
* After publish the streams, you could use VLC to play it
* Note: if stream is rtmp protocol, need to start your rtmp server
* Note: if stream is http protocol, need to start your http server
* @param inputPath inputFile
* @param duration how long of inputFile you want to publish
* @param streamUrl1 the url of stream1
* @param streamUrl2 the url of stream2
* @return command of build flv index
*/
public static String[] pushMultiStreams(String inputPath, int duration, String streamUrl1, String streamUrl2) {
//ffmpeg -i what.mp4 -vcodec libx264 -acodec aac -t 60 -f flv
//"tee:rtmp://192.168.1.102/live/stream1|rtmp://192.168.1.102/live/stream2"
String format = "flv";
if (streamUrl1.startsWith("rtmp://")) {//rtmp protocol
format = "flv";
} else if (streamUrl1.startsWith("http://")) {//http protocol
format = "mpegts";
}
String pushStreams = "ffmpeg -i %s -vcodec libx264 -acodec aac -t %d -f %s \"tee:%s|%s\"";
pushStreams = String.format(Locale.getDefault(), pushStreams, inputPath, duration, format, streamUrl1, streamUrl2);
return pushStreams.split(" ");
}
public static String[] rotateVideo(String inputPath, int rotateDegree, String outputPath) {
String rotateCmd = "ffmpeg -i -c copy -metadata:s:v:0 rotate=%d";
rotateCmd = String.format(Locale.getDefault(), rotateCmd, rotateDegree);
return insert(rotateCmd.split(" "), 2, inputPath, outputPath);
}
public static String[] changeGOP(String inputPath, int gop, String outputPath) {
String gopCmd = "ffmpeg -i -g %d";
gopCmd = String.format(Locale.getDefault(), gopCmd, gop);
return insert(gopCmd.split(" "), 2, inputPath, outputPath);
}
/**
* Trim one or more segments from a single video
* @param inputPath the path of input file
* @param start1 start time of the first segment
* @param end1 end time of the first segment
* @param start2 start time of the second segment
* @param end2 end time of the second segment
* @param outputPath the path of output file
* @return the command of trim video
*/
public static String[] trimVideo(String inputPath, int start1, int end1, int start2, int end2, String outputPath) {
String trimCmd = "ffmpeg -i -filter_complex " +
"[0:v]trim=start=%d:end=%d,setpts=PTS-STARTPTS[v0];" +
"[0:a]atrim=start=%d:end=%d,asetpts=PTS-STARTPTS[a0];" +
"[0:v]trim=start=%d:end=%d,setpts=PTS-STARTPTS[v1];" +
"[0:a]atrim=start=%d:end=%d,asetpts=PTS-STARTPTS[a1];" +
"[v0][a0][v1][a1]concat=n=2:v=1:a=1[out] -map [out]";
trimCmd = String.format(Locale.getDefault(), trimCmd, start1, end1, start1, end1, start2, end2, start2, end2);
return insert(trimCmd.split(" "), 2, inputPath, outputPath);
}
}