This is to be converted:
这将改为:
gst-launch -v ximagesrc startx=0 starty=0 endx=800 endy=600 ! ffmpegcolorspace ! "video/x-raw-yuv,width=800,height=600,framerate=30/1" ! v4l2sink device=/dev/video0
I found here that
我发现在这里
The "ffmpegcolorspace" element has been replaced with the new "videoconvert" element.
“ffmpegcolorspace”元素已经替换为新的“videoconvert”元素。
Simply replacing gst-launch with gst-launch-1.0 and ffmpegcolorspace with videoconvert is not sufficient and produces an error:
仅仅用gst-launch-1.0和ffmpegcolorspace替换使用videoconvert来替换gst-launch是不够的，会产生错误:
WARNING: erroneous pipeline: could not link videoconvert0 to v4l2sink0
警告:错误的管道:无法将videoconvert0链接到v4l2sink0
A simple gst-launch-1.0 videotestsrc ! ximagesink works fine, while gst-launch-1.0 videotestsrc ! v4l2sink device=/dev/video0 produces a different error:
一个简单的gst-launch-1.0 videotestsrc !ximagesink运行良好，而gst-launch-1.0 videotestsrc !v4l2sink设备=/dev/video0产生不同的错误:
ERROR: from element /GstPipeline:pipeline0/GstVideoTestSrc:videotestsrc0: Internal data flow error.
错误:从元素/GstPipeline:管道0/GstVideoTestSrc:videotestsrc0:内部数据流错误。
1 个解决方案
#1
3
Two things, first, GStreamer changed the way they do caps, so video/x-raw-yuv becomes video/x-raw,format=YUV9 (or one of many other formats). So your caps would be wrong under GStreamer 1.0.
首先，GStreamer改变了大写格式，因此视频/x-raw-yuv变成了视频/x-raw,format=YUV9(或其他许多格式中的一种)。所以在GStreamer 1.0下，你的帽子是错误的。
Secondly, you can probably trim your pipeline up a bit. I'd guess you could do this:
第二，你可以稍微调整一下你的管道。我想你可以这么做:
gst-launch -v ximagesrc startx=0 starty=0 endx=800 endy=600 ! videoconvert ! v4l2sink device=/dev/video0
gst-launch -v ximagesrc startx=0 startx=0 endx=800 endy=600 !videoconvert != / dev / video0 v4l2sink设备
And if the frame rates don't match between the source and sink you'd have to add videorate:
如果帧速率不匹配源和接收器你需要添加视频
gst-launch -v ximagesrc startx=0 starty=0 endx=800 endy=600 ! videoconvert ! videorate ! video/x-raw,framerate=30/1 ! v4l2sink device=/dev/video0
gst-launch -v ximagesrc startx=0 startx=0 endx=800 endy=600 !videoconvert !videorate !视频/ x-raw,帧速率= 30/1 != / dev / video0 v4l2sink设备
#1
3
Two things, first, GStreamer changed the way they do caps, so video/x-raw-yuv becomes video/x-raw,format=YUV9 (or one of many other formats). So your caps would be wrong under GStreamer 1.0.
首先，GStreamer改变了大写格式，因此视频/x-raw-yuv变成了视频/x-raw,format=YUV9(或其他许多格式中的一种)。所以在GStreamer 1.0下，你的帽子是错误的。
Secondly, you can probably trim your pipeline up a bit. I'd guess you could do this:
第二，你可以稍微调整一下你的管道。我想你可以这么做:
gst-launch -v ximagesrc startx=0 starty=0 endx=800 endy=600 ! videoconvert ! v4l2sink device=/dev/video0
gst-launch -v ximagesrc startx=0 startx=0 endx=800 endy=600 !videoconvert != / dev / video0 v4l2sink设备
And if the frame rates don't match between the source and sink you'd have to add videorate:
如果帧速率不匹配源和接收器你需要添加视频
gst-launch -v ximagesrc startx=0 starty=0 endx=800 endy=600 ! videoconvert ! videorate ! video/x-raw,framerate=30/1 ! v4l2sink device=/dev/video0
gst-launch -v ximagesrc startx=0 startx=0 endx=800 endy=600 !videoconvert !videorate !视频/ x-raw,帧速率= 30/1 != / dev / video0 v4l2sink设备