[PLUG-AV] Last night's recording

[Harry McNally]

Great work everyone who touched this in some way! I think it's impressive.

I'm sure all of the audio and flicker issues can be resolved but you look past
that at the editing and camera cut work and it has a good pace and flow even
tho' Carls talk was long (agree on setting time limits). At least Carl's  talk
was well prepared. I rushed what I wanted to say together and really it wasn't
well communicated.

The buzz tends to get familiar and not as noticeable .. to me but I can listen
to AM radio with massive static which freaks Jacqueline. Ah, white noise,
lovely ;)

It looks from your comments that the XLR to USB will be one solution and that
confirming the audio source might find the culprit. I don't think its worth
reprocessing unless it's to try notch filtering for future problems.

Well done is all I can say.
Harry

On 12/05/11 10:07, James Bromberger wrote:
> 
> 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
> 
> 
> 
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