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<body lang="EN-US"><div>Le Tuesday 19 May 2015 à 21:29 +0000, Spruyt, Randy a écrit :</div><blockquote type="cite">
<div class="WordSection1">
<p class="MsoNormal" style="background:white"><b><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222">Video from: http://download.blender.org/peach/bigbuckbunny_movies/big_buck_bunny_1080p_h264.mov<o:p></o:p></span></b></p>
<p class="MsoNormal" style="background:white"><b><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="background:white"><b><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222">Using gstreamer/plugins from the latest git clone, this seems to work fine:<o:p></o:p></span></b></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222">gst-launch-1.0 -v videotestsrc ! vaapiencode_h264 ! vaapiparse_h264 ! rtph264pay ! udpsink host=127.0.0.1 port=6000</span></p></div></blockquote><div><br></div><div>Have you tried with a livesrc (videotestsrc is-live=1) ? Have you check the latency is distributed properly with VAAPI element (e.g. by comparing with SW encoder like x264enc tune=zerolatency) ?</div><div><br></div><blockquote type="cite"><div class="WordSection1"><p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222"><o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222">gst-launch-1.0 udpsrc caps = "application/x-rtp, media=video, clock-rate=90000, encoding-name=H264, packetization-mode=1, profile-level-id=42c00d,
sprop-parameter-sets=\"Z0LADatAoPn/gACAAIgAAAMACAAAAwHkIA\\\=\\\=\\\,aM48gA\\\=\\\=\", payload=96, ssrc=2360089092, timestamp-offset=2801204503, seqnum-offset=3735" port=6000 ! rtpjitterbuffer! rtph264depay ! vaapiparse_h264 ! vaapidecode ! vaapisink<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><b><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222">But any video I try to stream has very high amounts of frame/dropping stuttering, with or without sync on the receiver. Incoming/Outgoing
data rates from nload are equal. </span></b></p></div></blockquote><div><br></div><div>Have you compared against avdec_h264 ? Could it be a bug in the VAAPI decoder ?</div><div><br></div><blockquote type="cite"><div class="WordSection1"><p class="MsoNormal" style="background:white"><b><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222">gst-launch-1.0 filesrc location=/home/dev/big_buck_bunny_1080p_h264.mov ! qtdemux ! vaapiparse_h264 ! rtph264pay ! udpsink host=127.0.0.1
port=5000<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.5pt;
font-family:"Arial","sans-serif";color:#222222"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial","sans-serif";
color:#222222;background:white">gst-launch-1.0 udpsrc caps = "application/x-rtp, media\=video, clock-rate=90000, encoding-name=H264, packetization-mode=1, profile-level-id=4d4029,
sprop-parameter-sets=\"J01AKakYDwBE/LgDUBAQG2wrXvfAQA\\\=\\\=\\\,KN4JyA\\\=\\\=\", payload=96, ssrc=765248706, timestamp-offset=4096462552, seqnum-offset=1276" port=5000 ! rtpjitterbuffer! rtph264depay ! vaapiparse_h264 ! vaapidecode ! vaapisink<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial","sans-serif";
color:#222222;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:9.5pt;font-family:"Arial","sans-serif";
color:#222222">Local playback looks fine, but streaming looks poor regardless of trying several different videos attempted. Does this play smooth for others?</span></b></p></div></blockquote><div><br></div><div>Works fine here without VAAPI element, hence me suspecting a bug in live support for these elements. What GStreamer version are you running ?</div><div><br></div><div>Nicolas</div><blockquote type="cite"></blockquote><div>
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