Gstreamer doubts

[007GK]

Hi,


I was trying gstreamer with various plugin/elements and could not 
understand few basic terms.

 1. When to use sync=false, sync=true, sync=1 with sink elements?

 2. When to use autovideosink?

3. Which is the demuxer to be used with decklinksrc?

4. What is ffmpegcolorspace element?

5. For below pipeline gst-launch errors out saying : WARNING: erroneous 
pipeline: could not link queue0 to audioconvert0 

gst-launch \ 

decklinksrc mode=18 connection=composite name=demux \ 

demux. ! queue ! audioconvert ! audiorate ! vorbisenc ! mux. \ 

demux. ! queue ! ffmpegcolorspace ! 'video/x-raw-yuv' ! vp8enc speed=7 ! 
mux. \ 

webmmux name=mux ! filesink location=s.webm 


but below command works:

gst-launch \ 

decklinksrc mode=18 connection=composite name=demux \ 

demux. ! queue ! ffmpegcolorspace ! 'video/x-raw-yuv' ! vp8enc speed=7 ! 
mux. \ 

demux. ! queue ! audioconvert ! audiorate ! vorbisenc ! mux. \ 

webmmux name=mux ! filesink location=newfile.webm 


I have just swapped video/audio components.. 


Thanks,

Sneha
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20140811/b176998c/attachment.html>