java 通過url地址 獲取視訊時長
阿新 • • 發佈：2021-01-09
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建立普通的maven專案 準備打包為jar 呼叫
<groupId>ws.schild</groupId> <artifactId>jave</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <dependencies> <!-- jave核心包 --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-core</artifactId> <version>2.4.6</version> </dependency> <!-- window64位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-win64</artifactId> <version>2.4.6</version> </dependency> <!-- linux64位 ffmpeg --> <dependency> <groupId>ws.schild</groupId> <artifactId>jave-native-linux64</artifactId> <version>2.4.6</version> </dependency> </dependencies> </project> ` ` package ws.schild.jave; //注意目錄結構 一定要按照原有的結構 否則好多內部呼叫會呼叫不到 import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import java.io.File; import java.io.IOException; import java.io.InputStreamReader; import java.util.StringTokenizer; import java.util.regex.Matcher; import java.util.regex.Pattern; //這個方法只是copy的ffmpeg的原始碼，修改了部分引數， // 讓能夠直接讀取url的時長，而不用把檔案下載下來到本地再去判斷多媒體音視訊的時長 public class FfmpegFileInfo { private static final Log LOG = LogFactory.getLog(MultimediaObject.class); private static final Pattern SIZE_PATTERN = Pattern.compile("(\\d+)x(\\d+)", 2); private static final Pattern FRAME_RATE_PATTERN = Pattern.compile("([\\d.]+)\\s+(?:fps|tbr)", 2); private static final Pattern BIT_RATE_PATTERN = Pattern.compile("(\\d+)\\s+kb/s", 2); private static final Pattern SAMPLING_RATE_PATTERN = Pattern.compile("(\\d+)\\s+Hz", 2); private static final Pattern CHANNELS_PATTERN = Pattern.compile("(mono|stereo|quad)", 2); private final FFMPEGLocator locator; private File inputFile; public FfmpegFileInfo(File input) { this.locator = new DefaultFFMPEGLocator(); this.inputFile = input; } public File getFile() { return this.inputFile; } public void setFile(File file) { this.inputFile = file; } public FfmpegFileInfo(File input, FFMPEGLocator locator) { this.locator = locator; this.inputFile = input; } public MultimediaInfo getInfo(String url) throws InputFormatException, EncoderException { FFMPEGExecutor ffmpeg = this.locator.createExecutor(); ffmpeg.addArgument("-i"); ffmpeg.addArgument(url); try { ffmpeg.execute(); } catch (IOException var8) { throw new EncoderException(var8); } MultimediaInfo var3; try { RBufferedReader reader = new RBufferedReader(new InputStreamReader(ffmpeg.getErrorStream())); var3 = this.parseMultimediaInfo(this.inputFile, reader); } finally { ffmpeg.destroy(); } return var3; } private MultimediaInfo parseMultimediaInfo(File source, RBufferedReader reader) throws InputFormatException, EncoderException { Pattern p1 = Pattern.compile("^\\s*Input #0, (\\w+).+$\\s*", 2); Pattern p2 = Pattern.compile("^\\s*Duration: (\\d\\d):(\\d\\d):(\\d\\d)\\.(\\d\\d).*$", 2); Pattern p3 = Pattern.compile("^\\s*Stream #\\S+: ((?:Audio)|(?:Video)|(?:Data)): (.*)\\s*$", 2); Pattern p4 = Pattern.compile("^\\s*Metadata:", 2); MultimediaInfo info = null; try { int step = 0; while(true) { String line = reader.readLine(); LOG.debug("Output line: " + line); if (line == null) { break; } //Matcher M2; String type; switch(step) { case 0: String token = source.getAbsolutePath() + ": "; if (line.startsWith(token)) { String message = line.substring(token.length()); throw new InputFormatException(message); } Matcher m = p1.matcher(line); if (m.matches()) { type = m.group(1); info = new MultimediaInfo(); info.setFormat(type); ++step; } break; case 1: m = p2.matcher(line); if (m.matches()) { long hours = (long)Integer.parseInt(m.group(1)); long minutes = (long)Integer.parseInt(m.group(2)); long seconds = (long)Integer.parseInt(m.group(3)); long dec = (long)Integer.parseInt(m.group(4)); long duration = dec * 10L + seconds * 1000L + minutes * 60L * 1000L + hours * 60L * 60L * 1000L; info.setDuration(duration); ++step; } break; case 2: m = p3.matcher(line); p4.matcher(line); if (m.matches()) { type = m.group(1); String specs = m.group(2); StringTokenizer st; int i; // String token; boolean parsed; Matcher m2; int bitRate; if ("Video".equalsIgnoreCase(type)) { VideoInfo video = new VideoInfo(); st = new StringTokenizer(specs, ","); for(i = 0; st.hasMoreTokens(); ++i) { token = st.nextToken().trim(); if (i == 0) { video.setDecoder(token); } else { parsed = false; m2 = SIZE_PATTERN.matcher(token); if (!parsed && m2.find()) { bitRate = Integer.parseInt(m2.group(1)); int height = Integer.parseInt(m2.group(2)); video.setSize(new VideoSize(bitRate, height)); parsed = true; } m2 = FRAME_RATE_PATTERN.matcher(token); if (!parsed && m2.find()) { try { float frameRate = Float.parseFloat(m2.group(1)); video.setFrameRate(frameRate); } catch (NumberFormatException var22) { LOG.info("Invalid frame rate value: " + m2.group(1), var22); } parsed = true; } m2 = BIT_RATE_PATTERN.matcher(token); if (!parsed && m2.find()) { bitRate = Integer.parseInt(m2.group(1)); video.setBitRate(bitRate * 1000); parsed = true; } } } info.setVideo(video); } else if ("Audio".equalsIgnoreCase(type)) { AudioInfo audio = new AudioInfo(); st = new StringTokenizer(specs, ","); for(i = 0; st.hasMoreTokens(); ++i) { token = st.nextToken().trim(); if (i == 0) { audio.setDecoder(token); } else { parsed = false; m2 = SAMPLING_RATE_PATTERN.matcher(token); if (!parsed && m2.find()) { bitRate = Integer.parseInt(m2.group(1)); audio.setSamplingRate(bitRate); parsed = true; } m2 = CHANNELS_PATTERN.matcher(token); if (!parsed && m2.find()) { String ms = m2.group(1); if ("mono".equalsIgnoreCase(ms)) { audio.setChannels(1); } else if ("stereo".equalsIgnoreCase(ms)) { audio.setChannels(2); } else if ("quad".equalsIgnoreCase(ms)) { audio.setChannels(4); } parsed = true; } m2 = BIT_RATE_PATTERN.matcher(token); if (!parsed && m2.find()) { bitRate = Integer.parseInt(m2.group(1)); audio.setBitRate(bitRate * 1000); parsed = true; } } } info.setAudio(audio); } } } if (line.startsWith("frame=")) { reader.reinsertLine(line); break; } } } catch (IOException var23) { throw new EncoderException(var23); } if (info == null) { throw new InputFormatException(); } else { return info; } } } ` 專案呼叫 ` <!--封裝jar包 根據url 解析視訊時長--> <dependency> <groupId>ws.schild</groupId> <artifactId>jave</artifactId> <version>1.0-SNAPSHOT</version> <scope>system</scope> <systemPath>${basedir}/src/lib/jave-1.0-SNAPSHOT.jar</systemPath> </dependency>` 加上這些程式碼就可以獲取時長了 /* * 根據url地址獲取視訊時長 */ private Long duration(String url)throws InputFormatException, EncoderException { File mediaFile = new File(url); log.info("視訊url地址 ：{}", url); FfmpegFileInfo ffmpegFileInfo = new FfmpegFileInfo(mediaFile); ws.schild.jave.MultimediaInfo multimediaInfo = null; multimediaInfo = ffmpegFileInfo.getInfo(url); long playTime = multimediaInfo.getDuration(); log.info("視訊時長 ：{}",playTime); return playTime; }
``
引入外部jar包
目錄結構圖：
參考文件 ：https://www.cnblogs.com/chenbinaiqiuyu/p/12736814.html