Video quality seems good enough although size works out to 157MB/hr<br><br>- that flickering sucks, i'd prefer not to include it in the future :( (i.e. we gotta work out what's wrong)<br><br>- that audio does NOT sound like it's from the wireless mic, almost certain it's from one of the cameras (or worse, my laptop built-in mic). The lapel mic sound is very different as it doesn't pick up the surrounding sound (as much) where as this mic is clearly picking up the hum sound from the switch. The interference with the wireless mic sounds more like AM radio static and it's not that. We really need to verify audio before streaming/recording next time - need to get some practice in and put together a checklist...<br>
<br>- It's just a bit too long, I think we should be giving a guideline to speakers for 1hr max including questions. Really a talk of 45mins is the upper limit and around the 30min mark would be better.<br><br><br><br>
<div class="gmail_quote">On Thu, May 12, 2011 at 10:07 AM, James Bromberger <span dir="ltr"><<a href="mailto:james@rcpt.to">james@rcpt.to</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div bgcolor="#FFFFFF" text="#000000">
<br>
OK, here's a first draft - I left it running to proced a file that I
could potentially share with people. I'm clearly not going to copy
17 GB to you! :)<br>
<br>
wget this file (I would advise against looking in a browser):<br>
<a href="http://www.plug.org.au/video/2011/IPv6-talk-1pass-slower-28.mp4" target="_blank">http://www.plug.org.au/video/2011/IPv6-talk-1pass-slower-28.mp4</a><br>
<br>
It's 245,184,261 bytes. Then if you have time and want to make it
better, send me an SSH key and I'll get you on to Av2 - the "Brad
Cambell" AMD64 box we got together - its now installed and comes in
at just over 4000 bogomips - dual core, 4 GB ram, 75 GB SCSI disk. I
can copy the DV file on there, and you can use whatever tools you
want to filter & process this file!<br>
<br>
If no one can be bothered, then the file I have becomes the final
copy and we move on! :)<br>
<br>
Things I noted;<br>
<ul>
<li>The new camera we bought does seem to flicker a lot in the
resulting video, as we noticed on the night. Don't know if it
needs maintenance on the camera (perhaps contact the
manufacturer)? Tim, how did you go with disabling demo mode, and
anything else you've discovered?</li>
<li>Our audio does still suck. As does the copy Gary had (I had a
listen to a sample). </li>
<li>The LinuxOutlaws podcasts talks about buzz on using on-board
audio inputs, and recommends using a USB audio input so that
your line in isn't anywhere near the laptop power circuit.<br>
</li>
</ul><div><div></div><div class="h5">
<br>
<br>
<br>
On 11/05/2011 11:35 AM, Jason Nicholls wrote:
<blockquote type="cite">Hey James,<br>
<br>
<br>
<div class="gmail_quote"><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> I've copied the video
file to my little Revo box, and he's happily encoding using
Jason's magic command line from an earlier post. I couldn't
get the hqdn3d filter to work, so I dropped that one and
proceeded. It's currently processing at 3fps; given 118k
frames, that's 11 hours until it completes this encoding to
MP4 (it's not a fast box being an Atom, but it can sit there
doing it all day while I try and work).<br>
</div>
</blockquote>
<div><br>
The filters depend on how the video comes through, the hqdn3d
filter is good if there is low light (and therefore the image
is a bit grainy), otherwise it's best without it. Generally
the yadif (de-interlace) and unsharp (sharpen) filters are
good though.<br>
<br>
<br>
</div>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> <br>
I'll send an update when its encoded.<br>
</div>
</blockquote>
<div><br>
I'd recommend quitting the encoding so that you can watch it
and ensure the quality is OK (for some reason i can't play the
files unless I quit and it writes something special to the
file - dunno). Finding the sweet spot "-crf" for the
lighting/conditions etc... I think 28 is the starting point
but may need lower if there is more action and especially
check the slides are readable.<br>
<br>
<br>
<br>
<br>
</div>
</div>
Jason Nicholls<br>
<a href="mailto:jason@mindsocket.com.au" target="_blank">jason@mindsocket.com.au</a><br>
0430 314 857<br>
<br>
</blockquote>
<br>
<br>
</div></div><div class="im"><div>-- <br>
<i>Mobile:</i> <a href="tel:%2B61%20422%20166%20708" value="+61422166708" target="_blank">+61 422 166 708</a>, <i>Email:</i>
james_AT_rcpt.to<br>
PLUG President 2011: <a href="http://http/www.plug.org.au" target="_blank">http//www.plug.org.au</a><br>
Perth.pm Organiser 2011: <a href="http://perth.pm.org" target="_blank">http://perth.pm.org</a></div>
</div></div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jason Nicholls<br><a href="mailto:jason@mindsocket.com.au" target="_blank">jason@mindsocket.com.au</a><br>0430 314 857<br><br>