add time to gif

add time to gif

app/src/main/java/com/frank/ffmpeg/activity/VideoHandleActivity.java

@@ -228,7 +228,8 @@ public class VideoHandleActivity extends BaseActivity {
                 int frameRate = 10;
                 String palettePath = PATH + "/palette.png";
                 FileUtil.deleteFile(palettePath);
-                String[] paletteCmd = FFmpegUtil.generatePalette(srcFile, frameRate, width, palettePath);
+                String[] paletteCmd = FFmpegUtil.generatePalette(srcFile, gifStart, gifDuration,
+                        frameRate, width, palettePath);
                 String[] gifCmd = FFmpegUtil.generateGifByPalette(srcFile, palettePath, gifStart, gifDuration,
                         frameRate, width, Video2Gif);
                 List<String[]> cmdList = new ArrayList<>();

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

@@ -288,13 +288,17 @@ public class FFmpegUtil {
      *
      * @param srcFile    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 targetFile output file
      * @return generate palette success or not
      */
-    public static String[] generatePalette(String srcFile, int frameRate, int width, String targetFile) {
-        String paletteCmd = "ffmpeg -i %s -vf fps=%d,scale=%d:-1:flags=lanczos,palettegen %s";
-        paletteCmd = String.format(Locale.getDefault(), paletteCmd, srcFile, frameRate, width, targetFile);
+    public static String[] generatePalette(String srcFile, int startTime, int duration,
+                                           int frameRate, int width, String targetFile) {
+        String paletteCmd = "ffmpeg -i %s -ss %d -t %d -vf fps=%d,scale=%d:-1:flags=lanczos,palettegen %s";
+        paletteCmd = String.format(Locale.getDefault(), paletteCmd, srcFile, startTime,
+                duration, frameRate, width, targetFile);
         return paletteCmd.split(" ");
     }