音频时长与码率
UpBox优盒工具箱,免费在线音频信息检测,读取本地音频文件的时长、体积与平均码率,文件不上传,适合剪辑前核对素材。
无需注册 · 数据不上传No sign-up · nothing uploaded
音频文件Audio file
选择文件后自动读取
时长由浏览器解码元数据得出,个别可变码率文件的总码率会随计算略有浮动;文件全程留在本地,不会上传
本工具所有运算在本地浏览器完成,你的文件、文本不会上传到服务器
工具介绍
拿到一段音频,往往先要知道它有多长、多大、大概是什么码率,才能判断能不能放进片子或者传得动。选一个本地文件,这三项会直接读出来。 Before using an audio clip you usually need to know how long it is, how large, and roughly what bitrate it carries. Pick a local file and all three appear at once.
读取全部在浏览器里完成,文件既不上传也不缓存;换成别的文件只需重新选择一次。 Everything happens inside the browser — nothing is uploaded or cached. Choosing another file takes one click.
- 时长读取Duration
- 体积换算File size
- 平均码率Average bitrate
- 本地处理Local only
使用说明
- 选择本地音频。Choose a local audio file.
- 自动读取元数据。Metadata is read automatically.
- 查看时长与码率。Check duration and bitrate.
- 需要时重选文件。Pick another when needed.
常见问题
为什么有的文件读不出来?Why do some files fail?
浏览器只解码它支持的编码,冷门或封装异常的文件会读取失败,可先转成 MP3 再试。The browser only decodes codecs it supports; unusual containers may fail, so convert to MP3 first.
码率是怎么算的?How is bitrate calculated?
用文件字节数乘 8 再除以秒数,得到平均码率,不是瞬时码率。File bytes × 8 divided by seconds gives the average, not an instantaneous rate.
文件会上传吗?Is the file uploaded?
不会,全部在本地浏览器内完成,关掉页面即清空。No, it stays in the browser and is gone once you close the page.
支持批量吗?Batch support?
当前一次一个,方便逐个核对素材。One file at a time for now.