[Libav-user] Detecting bit rate from live stream
mtaha.ansari at gmail.com
Tue Jan 22 08:34:53 CET 2013
Thanks for the reply, yes I just tried this - i.e. looking at following
return -1; // Couldn't find stream information
// Dump information about file onto standard error
av_dump_format(this->pFormatCtx, 0, this->finalInputName.c_str(), 0);
At time of opening up decoder for live udp stream (like:
udp://localhost:8765/a.h264) is still giving me bit_rate '0'.
On Tue, Jan 22, 2013 at 10:35 AM, Kalileo <kalileo at universalx.net> wrote:
> On Jan 22, 2013, at 11:37 , Taha Ansari wrote:
> > Hi,
> > I've been looking deeper into this, unfortunately so far I could not
> find a way to detect live stream's bit rate, or any way I could some how
> 'stuff' custom data (which would be bit rate in my case) with the encoder,
> and extract that on the network decoding end.
> > Kindly, could anyone guide me how can I achieve this? Also any hints are
> most welcome...
> > Thanks for your time...
> > On Wed, Jan 16, 2013 at 12:48 PM, Taha Ansari <mtaha.ansari at gmail.com>
> > Hi!
> > I am using h264 encoding to transmit video to destination network
> address using udp protocol. I also want to detect bit rate of the encoded
> frame on receiver end. In the pFormatCtx->bit_rate, and
> pCodecCtx->bit_rate, I see on receiver end, they are all zero. I understand
> since it is live streaming bit rate isn't stuffed there, but I would like
> to know if there is any way I could retrieve actual bit rate frame was
> transmitted on, on client side (i.e. decoder side decoding video over
> > Can anyone kindly provide some guidance or tips on how to do this?
> > Thanks for your time!
> Did you try running avformat_find_stream_info() after opening the codec
> context and before checking the bitrate fields?
> Libav-user mailing list
> Libav-user at ffmpeg.org
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