[PLUG-AV] Last night's recording

[James Bromberger]

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! :)

wget this file (I would advise against looking in a  browser):
http://www.plug.org.au/video/2011/IPv6-talk-1pass-slower-28.mp4

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!

If no one can be bothered, then the file I have becomes the final copy
and we move on! :)

Things I noted;

  * 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?
  * Our audio does still suck. As does the copy Gary had (I had a listen
    to a sample).
  * 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.




On 11/05/2011 11:35 AM, Jason Nicholls wrote:
> Hey James,
>
>
>
>     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).
>
>
> 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.
>
>
>
>     I'll send an update when its encoded.
>
>
> 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.
>
>
>
>
> Jason Nicholls
> jason at mindsocket.com.au <mailto:jason at mindsocket.com.au>
> 0430 314 857
>


-- 
/Mobile:/ +61 422 166 708, /Email:/ james_AT_rcpt.to
PLUG President 2011: http//www.plug.org.au
Perth.pm Organiser 2011: http://perth.pm.org
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.plug.org.au/pipermail/av/attachments/20110512/5836785c/attachment.html>