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Hello all,<br>
Weighing in at 685 MB, and running for 1 hour 40 minutes 11 seconds
(so around 114 KByte/sec), is the latest video from Tuesday's IBM
talk in the WebM format available at:<br>
<br>
<blockquote><b><a class="moz-txt-link-freetext" href="http://www.plug.org.au/video/2011/">http://www.plug.org.au/video/2011/</a><br>
</b></blockquote>
<br>
This was produced with:<br>
<blockquote><b>ffmpeg -i IBM-HPC.dv -acodec libvorbis -aq 6 -vcodec
libvpx -b 512k IBM-HPC.webm<br>
</b></blockquote>
<br>
Now we should possibly reduce to mono audio encoding, and may be add
de-interlace. This was produced on AV 2 in about 5 hours; we may be
able to do better with "-threads 2". I started a bash script to
handle this in ~av/Desktop/transcode-video-to-webm.sh, and saw a
suggestion of:<br>
<blockquote><b>ffmpeg -y -i $1 -threads 8 -f webm -aspect 16:9
-vcodec libvpx -deinterlace -g 120 -level 216 -profile 0 -qmax
42 -qmin 10 -rc_buf_aggressivity 0.95 -vb 2M -acodec libvorbis
-aq 90 -ac 2 ${1%.dv}.webm<br>
</b></blockquote>
<br>
<br>
AV 2 is up temporarily on IPv6 at av2.home.james.rcpt.to
(2001:470:f29c:0:21e:8cff:fea4:17b5) if someone wants to have a go
at other encodes?? Original DV Video files and transcodes are in
/storage/av/2011/IBM/; let me know if you're actively trying this so
I don't turn it off when sorting the shed on the weekend.<br>
<br>
If no one wants to play with another encode, and everyone is happy
with this one, then we can tell the list its there....<br>
<br>
James<br>
<br>
<br>
<div class="moz-signature">-- <br>
<em>Mobile:</em> +61 422 166 708, <em>Email:</em>
james_AT_rcpt.to<br>
PLUG President 2011: <a href="http//www.plug.org.au">http//www.plug.org.au</a><br>
Perth.pm Organiser 2011: <a href="http://perth.pm.org">http://perth.pm.org</a></div>
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