Hi All, I have a mpeg media file with audio and video content. video caps = video/mpeg, systemstream=(boolean)true, mpegversion=(int)1 audio caps = audio/mpeg, mpegversion=(int)1. I am using the below pipeline to play the file gst-launch filesrc location=/home/Alien.mpg ! decodebin name=dec dec. ! queue ! ffmpegcolorspace ! xvimagesink dec. ! queue ! audioconvert ! autoaudiosink -v But file doesn't play with this launch line. The video freezes after the first frame and I don't hear any audio too. But when I am constructing the pipeline using the plugins used by decodebin the file plays well. I don't understand whats the difference. Below is the pipeline constructed using the plugins used by decodebin for this particular file. gst-launch filesrc location=/home/Alien.mpg ! mpegpsdemux name=demux demux. ! queue ! mpeg2dec ! ffmpegcolorspace ! xvimagesink demux. ! queue ! mp3parse ! mad ! audioconvert ! autoaudiosink Thanks