vp8 v/s vp9 encoder in terms of performance

[Nicolas Dufresne]

Le mar. 26 mars 2019 06 h 25, Saurabh Bora <saurabh9bora at gmail.com> a
écrit :

> Hi,
>
> Following are my CPU specs:
> Name -  Intel(R) Core(TM) i5-7300U CPU @ 2.60GHz
> MaxClockSpeed - 2712
> Number of Cores - 2
> Number of Logical Processors - 4
> Physical RAM - 16 GB
>
> Following are cpu usage details:
> 1) With vp8 encoder, I get 100% CPU usage
> 2) With vp9 encoder, I get 100% CPU usage along with following additional
> messages:
>
> //------------------------------------------------------------------------------------------------------------
> WARNING: from element
> /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo:
> A lot of buffers are being dropped.
> Additional debug info:
> gstbasesink.c(2902): gst_base_sink_is_too_late ():
> /GstPipeline:pipeline0/GstAutoVideoSink:autovideosink0/GstD3DVideoSink:autovideosink0-actual-sink-d3dvideo:
> There may be a timestamping problem, or this computer is too slow.
>
> //---------------------------------------------------------------------------------------------------------------
>

So it's quite clear your cpu is not fast enough. That being said, these
encoder can use multiple threads. Use gst-inspect-1.0 vp9enc to find
information about which property to set.



>
>
> Thanks and Regards,
> Saurabh Bora
>
> On Mon, Mar 25, 2019 at 10:18 PM Nicolas Dufresne <nicolas at ndufresne.ca>
> wrote:
>
>> Le lundi 25 mars 2019 à 21:50 +0530, Saurabh Bora a écrit :
>>
>> Hi,
>> As suggested I added the property deadline=1 to the pipeline
>> gst-launch-1.0 videotestsrc ! autovideoconvert ! vp8enc deadline=1 !
>> vp8dec ! autovideosink
>>
>> Still video streaming lags significantly when vp9 encoder is used.
>>
>> Can you please help understand when must one use vp9 over vp8 and vice
>> versa?
>> Or is there a way to use vp9 encoder and achieve same performance as that
>> of vp8 encoder?
>>
>>
>> VP9 is a much more complex CODEC. Did you consider of checking your CPU
>> usage ? Maybe your CPU is just not fast enough for real-time vp9.
>>
>>
>> On Mon, Mar 25, 2019 at 8:35 PM Nicolas Dufresne <nicolas at ndufresne.ca>
>> wrote:
>>
>> Le lundi 25 mars 2019 à 18:35 +0530, Saurabh Bora a écrit :
>>
>> Hi Experts!
>>
>> I am using a dummy pipeline below to test performance of vp8 encoder v/s
>> vp9 encoder
>> gst-launch-1.0 videotestsrc ! autovideoconvert ! vp8enc ! vp8dec !
>> autovideosink
>>
>> Just replace vp8 by vp9 to use vp9 encoder in the pipeline.
>>
>> My observation is that, video streaming in case of vp9 encoder lags
>> significantly as compared to vp8 encoder.
>>
>> Can you please help me understand, when should one use vp9 over vp8 or
>> vice versa?
>>
>>
>> For live streaming with vp8/vp9 encoder, you could configured the
>> deadline, otherwise the encoder will run in "offline" mode and will take
>> quite variable amount of time per frame and may not be real-time in the
>> end. Try deadline=1 as an example.
>>
>>
>> --
>> Thanks and Regards,
>> Saurabh Bora
>>
>> PH NO : 7038166900
>> EMAIL : saurabh9bora at gmail.com
>>              saurabh9bora at outlook.com
>>
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>
>
>
> --
> Thanks and Regards,
> Saurabh Bora
>
> PH NO : 7038166900
> EMAIL : saurabh9bora at gmail.com
>              saurabh9bora at outlook.com
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
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