xubuntu 12.04 RC
Rendering ends 0 seconds in and produces a 0 byte file. There are no errors.
Running the script acts exactly the same, and produces this output:
//STARTING RENDERING: false , false , "/usr/bin/melt" , "/home/j/.kde/share/apps/kdenlive/profiles/customprofile0" , "avformat" , "-" , "/home/j/kdenlive/scripts/script001.sh.mlt" , "/home/j/kdenlive/untitled.webm" , () , ("acodec=libvorbis", "ab=128k", "ar=44100", "aq=50", "vcodec=libvpx", "minrate=0", "vb=8000k", "aspect=@16/9", "maxrate=16000k", "g=120", "qmax=42", "qmin=10", "threads=1", "real_time=-1") , -1 , -1
Started render process: "/usr/bin/melt" "/home/j/kdenlive/scripts/script001.sh.mlt -profile /home/j/.kde/share/apps/kdenlive/profiles/customprofile0 -consumer avformat:/home/j/kdenlive/untitled.webm progress=1 acodec=libvorbis ab=128k ar=44100 aq=50 vcodec=libvpx minrate=0 vb=8000k aspect=@16/9 maxrate=16000k g=120 qmax=42 qmin=10 threads=1 real_time=-1"
Rendering of "/home/j/kdenlive/untitled.webm" finished
Edit: As btriad noticed (http://www.kdenlive.org/forum/rendering-results-emtpy-file-when-transact... [2]) it's the title clips causing this.
I'd say this is high priority bug.
Links:
[1] http://kdenlive.org/forum/users-forums/rendering
[2] http://www.kdenlive.org/forum/rendering-results-emtpy-file-when-transaction-inserted