Mac 插件上的 Gstreamer 无法正常工作

Question

我的 Mac OS X 10.10.3 系统上的 GStreamer 存在一些严重问题。 我通过 Homebrew 安装了 gstreamer、gst-libav、-python、-validate、gst-plugins-base、-good、-bad、-ugly

但现在对我来说唯一可行的例子是：

gst-launch-1.0 videotestsrc ! autovideosink

如果我尝试这样的事情：

gst-launch-1.0 videotestsrc ! jpegenc ! rtpjpegpay ! udpsink host=127.0.0.1 port=5200

我得到一个错误：没有元素>>jpegenc

有人知道我是如何让它工作的吗？

THX 鼻烟

Answer 1

我也遇到了这个问题。这是解决方案：

brew install gst-plugins-good  --with-jpeg

事实证明，虽然 jpegenc 包含在“好”插件中，但 Homebrew 默认不安装它。你必须指定--with-jpeg

这是brew info 的输出。如您所见，jpeg 支持并不是 Homebrew 默认不安装的唯一支持。

$ brew info gst-plugins-good
gst-plugins-good: stable 1.6.1 (bottled), HEAD
GStreamer plugins (well-supported, under the LGPL)
http://gstreamer.freedesktop.org/
/usr/local/Cellar/gst-plugins-good/1.6.0 (363 files, 13M)
  Poured from bottle
/usr/local/Cellar/gst-plugins-good/1.6.1 (365 files, 13M) *
  Built from source with: --with-jpeg
From: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/gst-plugins-good.rb
==> Dependencies
Build: xz ✔, pkg-config ✔
Required: gettext ✔, gst-plugins-base ✔, libsoup ✔
Optional: check ✘, orc ✘, gtk+ ✔, aalib ✘, libcdio ✘, esound ✘, flac ✘, jpeg ✔, libcaca ✘, libdv ✘, libshout ✘, speex ✘, taglib ✘, libpng ✔, libvpx ✘
==> Options
--with-aalib
    Build with aalib support
--with-check
    Build with check support
--with-esound
    Build with esound support
--with-flac
    Build with flac support
--with-gtk+
    Build with gtk+ support
--with-jpeg
    Build with jpeg support
--with-libcaca
    Build with libcaca support
--with-libcdio
    Build with libcdio support
--with-libdv
    Build with libdv support
--with-libpng
    Build with libpng support
--with-libshout
    Build with libshout support
--with-libvpx
    Build with libvpx support
--with-orc
    Build with orc support
--with-speex
    Build with speex support
--with-taglib
    Build with taglib support
--with-x11
    Build with x11 support
--HEAD
    Install HEAD version