在matroskamux的文档中希望有一个示例演示如何混合字幕。经过几天的尝试，我怀疑它是否可行。除非文本流为字幕/ x-kate格式，否则matroskamux不能混合字幕是一个错误。以下是失败的管道描述。有人可以告诉我哪里出了问题，或验证它确实是一个错误。谢谢。
gst-launch-1.0 \
videotestsrc num-buffers=300 \
! videoconvert \
! theoraenc \
! MUXER.video_%u \
filesrc location=src.srt \
! subparse \
! text/x-raw,format=utf8 \
! MUXER.subtitle_0 \
matroskamux name=MUXER \
! filesink location=dst.mkv
下面是一个.srt文件，可用于尝试上述gst-launch-1.0命令。
1
00:00:01,000 --> 00:00:02,000
one
2
00:00:02,000 --> 00:00:03,000
two
3
00:00:03,000 --> 00:00:04,000
three
4
00:00:04,000 --> 00:00:05,000
four
5
00:00:05,000 --> 00:00:06,000
five
6
00:00:06,000 --> 00:00:07,000
six
7
00:00:07,000 --> 00:00:08,000
seven
8
00:00:08,000 --> 00:00:09,000
eight
9
00:00:09,000 --> 00:00:10,000
nine
10
00:00:10,000 --> 00:00:11,000
ten