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mrthumb's Introduction

拇指先生 Mrthumb

预览图

库说明

  • a simple easy video thumbnail provider
  • 顺滑的获取视频缩略图
  • 支持网络视频缩略图
  • 使用方便

源码下载,分支说明

请下载对应版本号的分支下载源码浏览,master分支为代码最新状态,却不一定是生成库的源代码,而且有可能是有问题的代码。而生成库后的源码,我会新建一个对应版本号的分支,以保存库源码初始状态。一供查错,二供浏览。

原理说明

  • 使用MediaMetadataRetriever获取视频信息及缩略图
  • 使用MediaMetadataRetrieverCompat支持FFmpeg和自带两种解码方式
  • 使用线程异步加载缩略图并缓存
  • 支持两种不同的加载顺序选择:顺序、乱序
  • 获取不到缩略图时取最近的缩略图

引用说明

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}
dependencies {
    implementation 'com.github.Reone:Mrthumb:v1.1.0'
}

使用说明

1.加载缩略图

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);
}

2.获取缩略图

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

3.添加缓存进度回调

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) + "%");
        }
    }
});

4.回收资源

Mrthumb.obtain().release();

mrthumb's People

Contributors

reone avatar

Stargazers

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mrthumb's Issues

切换视频后失效

你好,很好的一个项目。
我集成到一个应用之后,第一视频上是可以正常获取缩略图的。
但一旦切到其它的视频之后,就没有办法获取到缩略图了。只有退出整个应用之后,再进入才能重新在第一个视频获取到缩略图。

还没有时间去看有什么Log,后边去check一下。

如果不需要缓存了

老哥 我只是做预览 不需要缓存 视频帧 类似抖音 视频比较短 然后滑动的时候能看到缩略图就行 能不能指教下

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