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<p class="MsoNormal"><span lang="EN-US">It is always interest of topic drawing public eyeball to develop low-latency video system, even though GST provides all means and utility to inspect element’s latency property as well as offer a good example to demonstrate
design consideration for low-latency real-time use-case. But all these design spots is confine to GStreamer framework itself, for designing a well-suited plugin we also need to understand the system-wide technique that is very diversified and in nature the
core points do not go beyond the following framework,</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">A. For either encoder or decoder, change processing-granularity from single frame into line level or slice level that is so called “sub-frame” video codec, in other words split a frame into a series of pieces then feed
these pieces into pipeline, thus by means of intra-frame paralleling reduce overall latency<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">B. During bitstream encoding no B frame configured with I-frame and P-frame encoded into GOP
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">C. Remove any buffering between any consecutive pipeline processing stage so as to guarantee real-time bitstream pass-through with memory zero-copy implicited<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">D. Frame reorder/lipsync/FRC feature that are adopted under regular situation MUST de disabled for saving processing time<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">E. In response to addressing worst networking condition frame dropping sometimes performed and always process the most recent frame<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Roll back to GST plugin development for low-latency application, how to design LL-friendly pipeline and what are compact element suits forming pipeline? I hope to get community’s idea exchange and smart point inspiring
me to reach to right destination.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">George Lee <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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