<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif;"> Hello, I can not start (or don`t see) video playback from mkv file. It contain: -1 video stream coded by jpegenc -2 subtitles streams For the moment i am trying to have only video. But after gst_element_set_state(_pipeline, GST_STATE_PLAYING); nothing is happening. Also i don`t see ant activity of reading my file (using ProcessMonitor). My questions is what i am doing wrong: -is video playing, but i don`t see it? -if not how to start it? My pipeline is filesrc locatrion="path" ! matroskademux ! jpegdec ! autovideosink autovideosink is used as test. It will be appsrclater. But i am doing this line by line in my c++ code. Extraction from source code in attachment. Thank you for help in advance Best regards, Michael. <div id="Signature"> <div id="divtagdefaultwrapper" style="font-size:12pt; color:#000000; background-color:#FFFFFF; font-family:Calibri,Arial,Helvetica,sans-serif"> </div> </div> </div> </body> </html>