拇指先生 Mrthumb

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

dependencies {
    implementation 'com.github.Reone:Mrthumb:v1.0.2'
}

if (playState == NiceVideoPlayer.STATE_PREPARED) {
    //视频准备好后开始加载缩略图
    Mrthumb.obtain().buffer(videoUrl, videoDuration, Mrthumb.Default.COUNT);
    //更详细的可以调用如下方法
    //Mrthumb.obtain().buffer(videoUrl, null, videoDuration, Mrthumb.Default.RETRIEVER_TYPE, Mrthumb.Default.COUNT, Mrthumb.Default.THUMBNAIL_WIDTH, Mrthumb.Default.THUMBNAIL_HEIGHT);
}

float percentage = (float) seekBar.getProgress() / seekBar.getMax();
Bitmap bitmap = Mrthumb.obtain().getThumbnail(percentage);

Mrthumb.obtain().addProcessListener(new ProcessListener() {

    @Override
    public void onProcess(final int index, final int cacheCount, final int maxCount, final long time, final long duration) {
        if (delegate != null) {
            delegate.thumbProcessLog("cache " + time / 1000 + "s at " + index + " process:" + (cacheCount * 100 / maxCount) + "%");
        }
    }
});

Mrthumb.obtain().release();