gstreamer：交错 2 个音频 - 链接错误

发布于 2024-08-22 00:09:38 字数 615 浏览 5 评论 0原文

我正在尝试按照交错 GStreamer 文档中给出的方式交错两个音频文件：

gst-launch interleave name=i ! audioconvert ! wavenc ! filesink location=file.wav  filesrc location=file1.wav ! \
decodebin ! audioconvert ! "audio/x-raw-int,channels=1" ! queue ! i.sink0   filesrc location=file2.wav !  \
decodebin ! audioconvert ! "audio/x-raw-int,channels=1" ! queue ! i.sink1

但是执行此命令会出现以下错误：

0:00:00.125000000 2264 00332BC0 ERROR GST_PIPELINE Grammar.tab.c:656:gst_parse_perform_link:无法将queue0链接到i

如果我删除第二个 filesrc 相关命令，即“filesrc location=file2.wav 之后的所有命令，该命令运行正常。上述命令有什么问题？

谢谢

原文

I am trying to interleave two audio files as given in the interleave GStreamer documentation:

gst-launch interleave name=i ! audioconvert ! wavenc ! filesink location=file.wav  filesrc location=file1.wav ! \
decodebin ! audioconvert ! "audio/x-raw-int,channels=1" ! queue ! i.sink0   filesrc location=file2.wav !  \
decodebin ! audioconvert ! "audio/x-raw-int,channels=1" ! queue ! i.sink1

But executing this command gives the following error:

0:00:00.125000000 2264 00332BC0 ERROR GST_PIPELINE grammar.tab.c:656:gst_parse_perform_link: could not link queue0 to i

If I remove the second filesrc related commands i.e. all the command after "filesrc location=file2.wav, the command runs fine. What is wrong with the above command?

Thanks

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

人间☆小暴躁 2024-08-29 00:09:38

尝试

gst-launch interleave name=i ! audioconvert ! wavenc ! filesink location=file.wav  filesrc location=file1.wav ! \
decodebin ! audioconvert ! "audio/x-raw-int,channels=1" ! queue ! i.   filesrc location=file2.wav !  \
decodebin ! audioconvert ! "audio/x-raw-int,channels=1" ! queue ! i.

交错元素的接收器垫仅是请求，所以我打赌当 gst-launch 尝试链接元素时 i.sink0 垫不存在。留下一个句点 (i.) 告诉 gst-launch 尝试所有 pad，直到找到合适的 pad。

对于除了最基本的示例之外的任何内容，您最好使用简单的高级语言（如 python）手动创建管道。

参见

man gst-launch

try

gst-launch interleave name=i ! audioconvert ! wavenc ! filesink location=file.wav  filesrc location=file1.wav ! \
decodebin ! audioconvert ! "audio/x-raw-int,channels=1" ! queue ! i.   filesrc location=file2.wav !  \
decodebin ! audioconvert ! "audio/x-raw-int,channels=1" ! queue ! i.

the sink pads for the interleave element are request only, so i'm betting the i.sink0 pad does not exist when gst-launch tries to link the elements. leaving a single period (i.) tells gst-launch to try all pads until a suitable one is found.

for anything but the most basic examples, you're better off to create the pipeline manually in an easy high-level language like python.