视频压缩

yzg-util-image/src/main/java/com/yanzuoguang/util/MediaParameter.java

@@ -130,7 +130,7 @@ public class MediaParameter extends BaseVo {
      * @return
      */
     public int getAudioBitRateFinally() {
-        return Math.max(this.minAudioBitRate, (int) (this.audioBitRate * this.audioBitRateZip));
+        return getMinValue(this.minAudioBitRate, this.audioBitRate, this.audioBitRateZip);
     }
 
     /**
@@ -139,7 +139,7 @@ public class MediaParameter extends BaseVo {
      * @return
      */
     public int getVideoBitRateFinally() {
-        return Math.max(this.minVideoBitRate, (int) (this.videoBitRate * this.videoBitRateZip));
+        return getMinValue(this.minVideoBitRate, this.videoBitRate, this.videoBitRateZip);
     }
 
     /**
@@ -161,10 +161,46 @@ public class MediaParameter extends BaseVo {
     }
 
     private int getWidthHeightFinally(boolean width) {
+        // 最大宽度和最大高度
+        int maxWidth = Math.max(this.videoWidth, this.videoHeight);
+        int maxHeight = Math.min(this.videoWidth, this.videoHeight);
+        // 获取允许的最小宽度和高度
+        int minWidth = Math.max(this.minVideoWidth, this.minVideoHeight);
+        int minHeight = Math.min(this.minVideoWidth, this.minVideoHeight);
+        // 计算最小宽度和高度
+        int calcMinWidth = maxWidth * minHeight / maxHeight;
+        int calcMinHeight = maxHeight * minWidth / maxWidth;
+        // 设置最小的宽高
+        if (minWidth == 0) {
+            minWidth = calcMinWidth;
+            calcMinHeight = minHeight;
+        }
+        if (minHeight == 0) {
+            minHeight = calcMinHeight;
+            calcMinWidth = minWidth;
+        }
+
+        // 判断宽高比列
+        if (calcMinHeight > minHeight) {
+            minHeight = calcMinHeight;
+        } else {
+            minWidth = calcMinWidth;
+        }
+
         if (width) {
-            return Math.max(this.minVideoWidth, (int) (this.videoWidth * this.videoSizeZip));
+            int minValue = this.videoWidth > this.videoHeight ? minWidth : minHeight;
+            return getMinValue(minValue, this.videoWidth, this.videoSizeZip);
+        } else {
+            int minValue = this.videoWidth < this.videoHeight ? minWidth : minHeight;
+            return getMinValue(minValue, this.videoHeight, this.videoSizeZip);
+        }
+    }
+
+    private int getMinValue(int min, int from, float zip) {
+        if (from < min) {
+            return from;
         } else {
-            return Math.max(this.minVideoHeight, (int) (this.videoHeight * this.videoSizeZip));
+            return Math.max(min, (int) (from * zip));
         }
     }
 
@@ -271,16 +307,67 @@ public class MediaParameter extends BaseVo {
         // recorder.setVideoQuality(this.videoBitRateZip);
     }
 
-    public void initZipMp4() {
-        this.initMp4();
+    /**
+     * 设置最小压缩比特率
+     */
+    public void initZipBitrate() {
         // 设置视频压缩率
         this.audioBitRateZip = StringHelper.getFirst(this.audioBitRateZip, 0.25f);
-        // 设置压缩大小
-        this.videoSizeZip = StringHelper.getFirst(this.videoSizeZip, 0.25f);
         // 设置视频压缩率
-        this.videoBitRateZip = StringHelper.getFirst(this.videoBitRateZip, 0.25f);
+        this.videoBitRateZip = StringHelper.getFirst(this.videoBitRateZip, 0.1f);
+        // 设置压缩大小
+        this.videoSizeZip = StringHelper.getFirst(this.videoSizeZip, 0.1f);
+        // 设置音频最小比特率
+        this.minAudioBitRate = StringHelper.getFirst(this.minAudioBitRate, 48043);
+    }
+
+    /**
+     * 设置宽高最小480 *360
+     */
+    public void initZip480_360() {
+        // 设置最小宽度,指的是宽度和高度中的大值，宽度>高度
+        this.minVideoWidth = StringHelper.getFirst(this.minVideoWidth, 480);
+        // 设置最小高度,指的是宽度和高度中的小值，宽度>高度
+        this.minVideoHeight = StringHelper.getFirst(this.minVideoHeight, 360);
+        // 设置视频最小比特率
+        this.minVideoBitRate = StringHelper.getFirst(this.minAudioBitRate, 295581);
     }
 
+    /**
+     * 设置宽高最小800*600
+     */
+    public void initZip800_600() {
+        // 设置最小宽度,指的是宽度和高度中的大值，宽度>高度
+        this.minVideoWidth = StringHelper.getFirst(this.minVideoWidth, 800);
+        // 设置最小高度,指的是宽度和高度中的小值，宽度>高度
+        this.minVideoHeight = StringHelper.getFirst(this.minVideoHeight, 600);
+    }
+
+    /**
+     * 设置宽最小960，高度根据宽度自适应
+     */
+    public void initZip960() {
+        // 设置最小宽度,指的是宽度和高度中的大值，宽度>高度
+        this.minVideoWidth = StringHelper.getFirst(this.minVideoWidth, 960);
+        // 设置视频最小比特率
+        this.minVideoBitRate = StringHelper.getFirst(this.minAudioBitRate, 2955811);
+    }
+
+    /**
+     * 设置宽高最小1920*1080
+     */
+    public void initZip1920_1080() {
+        // 设置最小宽度,指的是宽度和高度中的大值，宽度>高度
+        this.minVideoWidth = StringHelper.getFirst(this.minVideoWidth, 1920);
+        // 设置最小高度,指的是宽度和高度中的小值，宽度>高度
+        this.minVideoHeight = StringHelper.getFirst(this.minVideoHeight, 1080);
+        // 设置视频最小比特率
+        this.minVideoBitRate = StringHelper.getFirst(this.minAudioBitRate, 8311136);
+    }
+
+    /**
+     * 抓码为mp4
+     */
     public void initMp4() {
         this.audioCodec = SOUND_CODEC_MP3;
         this.videoCodeC = VIDEO_CODEC_MP4;
@@ -288,6 +375,18 @@ public class MediaParameter extends BaseVo {
         this.videoPixelFormat = VIDEO_FIXED_MP4;
     }
 
+    /**
+     * 压缩mp4
+     */
+    public void initZipMp4() {
+        // 设置结果为mp4
+        this.initMp4();
+        // 设置最小宽高
+        this.initZip960();
+        // 设置最小压缩比特率
+        this.initZipBitrate();
+    }
+
     public int getAudioCodec() {
         return audioCodec;
     }

yzg-util-image/src/test/java/helper/TestMediaHelper.java

@@ -48,6 +48,14 @@ public class TestMediaHelper {
         testConvert(fileName, 0.25f, 0.10f);
     }
 
+
+    @Test
+    public void testMinZipSingle() throws IOException {
+        String fileName = "100M.mp4";
+        // String fileName = "z001594372388232a3017ad69c82a342.MOV";
+        testConvert(fileName, 0.01f, 0.01f);
+    }
+
     @Test
     public void testConvertSingle_Two() throws IOException {
         String fileName = "100M.mp4.size_50.quot_50.mp4";