Android 获取视频第一帧-蒲公英云

Android 获取视频第一帧

1.本地视频

MediaMetadataRetriever media = new MediaMetadataRetriever();
media.setDataSource(videoPath);// videoPath 本地视频的路径
Bitmap bitmap  = media.getFrameAtTime(1, MediaMetadataRetriever.OPTION_CLOSEST_SYNC);
ivAddPhoto.setImageBitmap(bitmap);

2.网络视频

//网络
public static Bitmap createVideoThumbnail(String filePath, int kind)
    { 
        Bitmap bitmap = null;
        MediaMetadataRetriever retriever = new MediaMetadataRetriever();
        try
        { 
            if (filePath.startsWith("http://")
                    || filePath.startsWith("https://")
                    || filePath.startsWith("widevine://"))
            { 
                retriever.setDataSource(filePath, new Hashtable<String, String>());
            }
            else
            { 
                retriever.setDataSource(filePath);
            }
            bitmap = retriever.getFrameAtTime(0, MediaMetadataRetriever.OPTION_CLOSEST_SYNC); //retriever.getFrameAtTime(-1);
        }
        catch (IllegalArgumentException ex)
        { 
            // Assume this is a corrupt video file
            ex.printStackTrace();
        }
        catch (RuntimeException ex)
        { 
            // Assume this is a corrupt video file.
            ex.printStackTrace();
        }
        finally
        { 
            try
            { 
                retriever.release();
            }
            catch (RuntimeException ex)
            { 
                // Ignore failures while cleaning up.
                ex.printStackTrace();
            }
        }
        if (bitmap == null)
        { 
            return null;
        }
        if (kind == MediaStore.Images.Thumbnails.MINI_KIND)
        { //压缩图片 开始处
            // Scale down the bitmap if it's too large.
            int width = bitmap.getWidth();
            int height = bitmap.getHeight();
            int max = Math.max(width, height);
            if (max > 512)
            { 
                float scale = 512f / max;
                int w = Math.round(scale * width);
                int h = Math.round(scale * height);
                bitmap = Bitmap.createScaledBitmap(bitmap, w, h, true);
            }//压缩图片 结束处
        }
        else if (kind == MediaStore.Images.Thumbnails.MICRO_KIND)
        { 
            bitmap = ThumbnailUtils.extractThumbnail(bitmap,
                    96,
                    96,
                    ThumbnailUtils.OPTIONS_RECYCLE_INPUT);
        }
        return bitmap;
    }
//调用
mIvBigShow.setImageBitmap(createVideoThumbnail(videoPath,MediaStore.Images.Thumbnails.MINI_KIND));

3.使用Glide获取视频第一帧

//版本4+之后才有的功能 
/** * 加载第四秒的帧数作为封面 * url就是视频的地址 */
  public static void loadCover(ImageView imageView, String url, Context context) { 
      imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
      Glide.with(context)
              .setDefaultRequestOptions(
                      new RequestOptions()
                              .frame(4000000)
                              .centerCrop()
                              .error(R.mipmap.eeeee)//可以忽略
                              .placeholder(R.mipmap.ppppp)//可以忽略
              )
              .load(url)
              .into(imageView);
  }