Decrease latency between different branches of pipeline

[Nicolas Dufresne]

Le jeudi 23 mars 2017 à 21:25 -0700, sielf a écrit :
> The full pipeline is:
> imxv4l2videosrc-videoconvert(colorspace)-queue--tee--queue-
> videoconvert(colorspace)-
> imxg2dvideosink                                                      
>                      
>                                                                      
>     
> > --queue--videoconvert (colorspace) ---imxg2dvideotransform
> 
> (rescale)---videoconvert(colorspace)--imxvpuenc_h264---avimux
> --filesink
>                                                                      
>     
> > --queue--videoconvert-appsink
> 
> 
> Queues have parameters: max-size-time=10s, max-size-bytes=100M
> max-size-buffers-500 , I've changed this without any effect. All sink
> were
> tried with sync false and true. Qos everywhere is true. Coder has
> bitrate=0,
> gop-size=16 quant-param=24 idr=16.

In general, tee should break zero-copy. So that may explain the jittery
part. On the other side, you probably need to make the queue on the
appsink side to be leaky, so it nevers blocks. Otherwise if you don't
read the appsink fast enough, the other side will be jittery.

Nicolas
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