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2019年12月11日 (三) 10:37的最新版本
简介
- gst-discoverer(gst-discoverer-1.0)是GStreamer命令行实用程序。
- 该实用程序可用于获取有关多媒体内容的信息,例如图像,音频/视频文件。
使用方法
- gst-discoverer支持以下选项:
Board $> gst-discoverer-1.0 --help
gst-discoverer-1.0 --help
Usage:
gst-discoverer-1.0 [OPTION?] - discover files synchronously with GstDiscoverer
Help Options:
-h, --help Show help options
--help-all Show all help options
--help-gst Show GStreamer Options
Application Options:
-a, --async Run asynchronously
-t, --timeout=T Specify timeout (in seconds, default 10)
-c, --toc Output TOC (chapters and editions)
-v, --verbose Verbose properties
- 默认情况下,会给出简短的信息级别,包括视频格式,音频和视频编解码器:
Board $> gst-discoverer-1.0 /usr/local/demo/media/ST2297_visionv3.webm
Analyzing file:///usr/local/demo/media/ST2297_visionv3.webm
Done discovering file:///usr/local/demo/media/ST2297_visionv3.webm
Topology:
container: WebM
audio: Vorbis
video: VP8
Properties:
Duration: 0:04:02.413000000
Seekable: yes
Live: no
Tags:
container format: Matroska
language code: en
application name: Lavc56.60.100
encoder: Xiph.Org libVorbis I 20150105 (????)
encoder version: 0
audio codec: Vorbis
nominal bitrate: 112000
bitrate: 112000
video codec: On2 VP8
- -v选项会给出显示更多的细节,诸如音频信道的数目,音频采样率,所述视频宽度和高度或甚至像素纵横比:
Board $> gst-discoverer-1.0 -v /usr/local/demo/media/ST2297_visionv3.webm
Analyzing file:///usr/local/demo/media/ST2297_visionv3.webm
Done discovering file:///usr/local/demo/media/ST2297_visionv3.webm
Topology:
container: video/webm
audio: audio/x-vorbis, channels=(int)2, rate=(int)48000, streamheader=(buffer)< 01766f7262697[...]
Tags:
container format: Matroska
language code: en
application name: Lavc56.60.100
encoder: Xiph.Org libVorbis I 20150105 (????)
encoder version: 0
audio codec: Vorbis
nominal bitrate: 112000
bitrate: 112000
Codec:
audio/x-vorbis, channels=(int)2, rate=(int)48000, streamheader=(buffer)< 01766f72 [...]
Additional info:
None
Stream ID: 18eb4f2d90d91d79f9bf3f9b9e41e785ee2cc1396d37b5ad127838437f6a3847/002:002
Language: en
Channels: 2 (front-left, front-right)
Sample rate: 48000
Depth: 32
Bitrate: 112000
Max bitrate: 0
video: video/x-vp8, width=(int)640, height=(int)360, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)25/1
Tags:
container format: Matroska
video codec: On2 VP8
language code: en
Codec:
video/x-vp8, width=(int)640, height=(int)360, pixel-aspect-ratio=(fraction)1/1, framerate=(fraction)25/1
Additional info:
None
Stream ID: 18eb4f2d90d91d79f9bf3f9b9e41e785ee2cc1396d37b5ad127838437f6a3847/001:001
Width: 640
Height: 360
Depth: 24
Frame rate: 25/1
Pixel aspect ratio: 1/1
Interlaced: false
Bitrate: 0
Max bitrate: 0
Properties:
Duration: 0:04:02.413000000
Seekable: yes
Live: no
Tags:
container format: Matroska
video codec: On2 VP8
language code: en
application name: Lavc56.60.100
encoder: Xiph.Org libVorbis I 20150105 (????)
encoder version: 0
audio codec: Vorbis
nominal bitrate: 112000
bitrate: 112000