[Solved]how to avoid sout file be overwritten?

[zplzk2]

hi guys,
right now I'm doing a project with C# and VLC, here is my problem:

my program would transcode some live signals with vlc and save them to local files, also, my program should be able to play various kinds of local files.
these two functions work fine separately, but when I dynamically change from one to another, I met some problem.
1) if I record live signal first, the file it transcoded and saved (lets name it as record_2011-12-8.ts), would be overwritten when I turned to play any other local files
2) I add "--sout=#display" in the agruments passed to vlc and solved problem 1, but I can no longer play some kinds of files including MP4
3) I add "--no-sout-keep" according to official document but nothing helps
4) I found a thread in vlc email list http://git.videolan.org/gitweb.cgi/vlc. ... fe8c237860, but nothing more

so, could anybody help me with this? thanks a lot~~

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solved by using add_option function