有沒有辦法通過Xuggler獲得視頻的分辨率？

Question

我正在開發一個項目，它本質上是一個視頻上傳器，我想知道是否有任何方法可以使用Java中的Xuggler庫來獲取上傳視頻的解析度。

Answer 1

在類IStreamCoder中有getHeight和getWidth方法。

所以你應該只使用這些方法，this sample應該告訴你如何去做。

我提取了你應該重要的東西。

// Create a Xuggler container object 
IContainer container = IContainer.make(); 

// Open up the container 
if (container.open("/path/to/video.avi", IContainer.Type.READ, null) < 0) 
    throw new IllegalArgumentException("could not open file: " + filename); 

// query how many streams the call to open found 
int numStreams = container.getNumStreams(); 

// and iterate through the streams to find the first video stream 
int videoStreamId = -1; 
IStreamCoder videoCoder = null; 
for (int i = 0; i < numStreams; i++) { 
    // Find the stream object 
    IStream stream = container.getStream(i); 
    // Get the pre-configured decoder that can decode this stream; 
    IStreamCoder coder = stream.getStreamCoder(); 

    if (coder.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO) { 
    videoStreamId = i; 
    videoCoder = coder; 
    break; 
    } 
} 
if (videoStreamId == -1) 
    throw new RuntimeException("could not find video stream in container: " 
     +filename); 

/* 
* Now we have found the video stream in this file. 
* Let's open up our decoder so it can do work. 
*/ 
if (videoCoder.open() < 0) 
    throw new RuntimeException("could not open video decoder for container: " 
     + filename); 

// here you have what you need 
int height = videoCoder.getHeight(); 
int width = videoCoder.getWidth();