[x264-devel] "bitrate" not behaving as expected from GStreamer

[Jason Garrett-Glaser]

On Fri, May 14, 2010 at 7:52 AM, Uday Verma <uday.karan at gmail.com> wrote:
> Hi,
>
> I am not sure if this is the correct place to ask this question.
> I am trying to encode a 1280x720 video stream in realtime.
>
> I am using 20100510 snapshot of x264.  I am running gst-plugins-ugly 0.10.14
> patched with changes from master.  For some reason the bitrate property is
> not working as expected anymore.
> Earlier I used to set bitrate to control the amount of data being emitted
> from the x264 encoder process.  Now it seems that the encoder just doesn't
> care about the bitrate setting and encodes data at around 768-1024 kbps.
>  Changing the bitrate however makes the encoding process go slower or
> faster.  Lower bitrate lets the encoding run faster.  I am not sure if the
> bitrate property now needs to set differently.
> I noticed this changed when I switched to the 20100410 snapshot from
> 20100310 snapshot.
> Here's how the x264 encoder parameters are being set presently in
> gst-plugins-ugly master:
> http://cgit.freedesktop.org/gstreamer/gst-plugins-ugly/tree/ext/x264/gstx264enc.c#n448
> Thanks,
> Uday


gstx264enc is extraordinarily broken and thus it is difficult for us
to support it.  Talk to ds or superdump; both are working on fixing
it.

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