如何在Android上确定视频的宽度和高度 [英] How to determine video width and height on Android

问题描述

我有一个视频文件，我想获取视频的宽度和高度.我不想玩它，只是为了获得尺寸. 我尝试使用MediaPlayer:

I have a video file and I want to get width and height of video. I don't want to play it, just to get size. I've tried to use MediaPlayer:

MediaPlayer mp = new MediaPlayer();
mp.setDataSource(uriString);
mp.prepare();
int width = mp.getVideoWidth();
int height = mp.getVideoHeight();

，但它的宽度和高度返回0，因为VideoSizeChangedEvent尚未触发. 如何获取视频的宽度和高度?

but it returns 0 for width and height, because VideoSizeChangedEvent didn't fire yet. How can I get width and height of video?

UPD:我需要API版本7

UPD: I need API version 7

推荐答案

这适用于API级别10及更高版本:

This works in API level 10 and up:

MediaMetadataRetriever retriever = new MediaMetadataRetriever();
retriever.setDataSource("/path/to/video.mp4");
int width = Integer.valueOf(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_WIDTH));
int height = Integer.valueOf(retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_HEIGHT));
retriever.release();

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