actually I did this one .. I was having the problem of bad video quality so I reduced the fps and it was better. here is the link. I am not sure if it will be of accurate help ...
(I guess u must have seen this already :-D) http://wiki.oz9aec.net/index.php/Simple_DVB_with_Gstreamer_and_GNU_Radio he is not using ofdm but still u can see the values which u want.. hope it will help rara wrote: > > here is command that i use... > > gst-launch -e v4l2src ! video/x-raw-yuv, framerate=10/1, width=320, > height=240 ! ffmpegcolorspace ! ffenc_mpeg4 ! avimux ! filesink > location=tx > > i manage to receive the webcam,but at certain time the video stop and > suddenly play so fast showing on the previous playback...someone suggest > me to add buffer for smooth video..but, i'm out of idea how to implement > the buffer on my grc block...can u help me??regarding on the fps, i cant > see what value are suitable to be used n why the value should be like > that... > > > sumitstop wrote: >> >> try reducing the fps. this worked for me >> >> >> rara wrote: >>> >>> hye... >>> i'm using grc for video streaming of ofdm system... >>> i manage to transmit the video but the quality is so bad.... >>> and sometime the video can play,but sometime it doesn't play at all... >>> how to improve the video quality?is it approriate to add buffer on it? >>> and i got this message...what does it meant?? >>> >>> gst-launch -v playbin uri=file:///root/rx >>> Setting pipeline to PAUSED ... >>> Pipeline is PREROLLING ... >>> ERROR: from element >>> /GstPlayBin:playbin0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind: >>> Stream contains no data. >>> Additional debug info: >>> gsttypefindelement.c(570): gst_type_find_element_handle_event (): >>> /GstPlayBin:playbin0/GstDecodeBin:decodebin0/GstTypeFindElement:typefind: >>> Can't typefind empty stream >>> ERROR: pipeline doesn't want to preroll. >>> Setting pipeline to NULL ... >>> Freeing pipeline ... >>> >>> tq >>> >>> >>> >>> >> >> > > ----- Sumit Kr. Research Assistant Communication Research center IIIT Hyderabad India -- View this message in context: http://old.nabble.com/video-streaming-on-ofdm-tp33672798p33700876.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
