Android 获取视频第一帧

今天药忘吃喽~ 2023-01-13 08:56 291阅读 0赞

### 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);
      }