Gstreamer 1.0:教程中的视频无法在MacOS上播放 [英] Gstreamer 1.0: Video from tutorials is not playing on MacOS

问题描述

我正在尝试编译本教程 Tutorial_01 在装有Xcode 7.2的MacOS 10.11.3上并且没有收到任何视频:我可以听到音频，但似乎视频窗口丢失了.

I am trying to compile this tutorial Tutorial_01 on my MacOS 10.11.3 with Xcode 7.2 and not getting any video: I can hear an audio but it seems like the video window is lost somewhere.

我尝试使用命令行gat-launch-1.0播放相同的媒体:

I tried playing the same media with command line gat-launch-1.0:

gst-launch-1.0 -v playbin uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm

，并且可以在OpenGL Renderer中很好地打开媒体.

and it works just fine opening the media in OpenGL Renderer.

有什么想法吗?

预先感谢， 最高

更新:在调试模式下收到此警告:

Update: Getting this warning while in debug mode:

0:00:00.314802000 [336m64763[00m 0x7f93e4854a30 [32;01mFIXME  [00m [00m        videodecoder gstvideodecoder.c:1057:GstFlowReturn gst_video_decoder_drain_out(GstVideoDecoder *, gboolean):<vp8dec0>[00m Sub-class should implement drain()

推荐答案

看起来您需要在Mac上运行Glib事件循环.

looks like you need to run Glib event loop on mac.

定义变量

GMainLoop *main_loop;

然后在创建管道之后运行循环:

Then run loop after pipeline creation:

main_loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (main_loop);

可能您需要回调来控制循环，因此您可以使用 g_timeout_add.

Probably you need callback for controlling loop so you can use g_timeout_add.

希望有帮助

更新:

GStreamer总线-此链接也应提供帮助

GStreamer Bus - this link should help too

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