Re: [Discuss-gnuradio] video streaming on ofdm

[rara]

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
>> 
>> 
>> 
>> 
> 
> 

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