<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div>Hi,</div><div><br></div><div style="margin-top: 0px; margin-bottom: 1em; border: 0px; vertical-align: baseline; clear: both;"><font face="Arial, Liberation Sans, DejaVu Sans, sans-serif"><span style="font-size: 14px; line-height: 17.804800033569336px;">Iam quite a newbie to gstreamer. Could somebody pls answer my below queries:</span></font></div><div style="margin-top: 0px; margin-bottom: 1em; border: 0px; vertical-align: baseline; clear: both; color: rgb(0, 0, 0); font-size: 14px; font-family: Arial, 'Liberation Sans', 'DejaVu Sans', sans-serif; background-color: transparent; font-style: normal;"><span style="line-height: 17.804800033569336px; background-color: transparent;">I have seen this kind of pipeline-running commands in gstreamer:</span><br></div><div style="margin-top: 0px;
margin-bottom: 1em; border: 0px; vertical-align: baseline; clear: both;"><font face="Arial, Liberation Sans, DejaVu Sans, sans-serif"><span style="font-size: 14px; line-height: 17.804800033569336px;">e.g.,gst-launch-1.0 videotestsrc ! video/x-raw, format=I420, framerate=25/1, width=640, height=360 ! xvimagesink</span></font></div><div style="margin-top: 0px; margin-bottom: 1em; border: 0px; vertical-align: baseline; clear: both;"><font face="Arial, Liberation Sans, DejaVu Sans, sans-serif"><span style="font-size: 14px; line-height: 17.804800033569336px;">And I have read in some pages that "video/x-raw, format=I420, framerate=25/1, width=640, height=360 " specifies the media-type. But Iam not able to understand what effect would it make - is it transforming the input to the specified framerate/format/width/height etc.. or is it just like specifying the input is in this framerate/width/ht already ? and What effect it would have on the pipeline if it is
just specifying the input is in this framerate etc... instead of transforming.</span></font></div><div style="margin-top: 0px; margin-bottom: 1em; border: 0px; vertical-align: baseline; clear: both;"><font face="Arial, Liberation Sans, DejaVu Sans, sans-serif"><span style="font-size: 14px; line-height: 17.804800033569336px;">And is it really necessary or we can ignore it ?</span></font></div><div style="margin-top: 0px; margin-bottom: 1em; border: 0px; vertical-align: baseline; clear: both; color: rgb(0, 0, 0); font-size: 14px; font-family: Arial, 'Liberation Sans', 'DejaVu Sans', sans-serif; background-color: transparent; font-style: normal;">Thanks,</div></div></body></html>