I still see the problem in that video, Vicki. It's more of a slight jitter than
"jerky". Your horizontal scale is about 3 times as stretched as mine, so it's
not as noticeable. I used to think it meant that the program generating the
moving cursor/spectrogram couldn't quite keep up, but now I think it's just the
maths of the chosen scale and the refresh rate.
Or perhaps I'm just being too fussy?
I should add a time scale to my videos.
From: On
Behalf Of vickipowys
Sent: Saturday, 12 January 2013 12:26 PM
To:
Subject: Re: [Nature Recordists] More on scrolling spectrograms
On 12/01/2013, at 10:26 AM, Peter Shute wrote:
> It's about a year since I asked here about methods of producing
> scrolling spectrogram movies for Youtube. At the time, the only
> solutions I was offered were to use screen capture software to
> capture the display of an audio program like Audacity, etc, or
> Acousmographe, which can produce a Flash movie.
Peter,
This may not help you at all, but perhaps other readers might be
interested. When this topic was discussed a year ago I experimented
with scrolling sonograms using Quicktime movie formats for iMac, and
uploading them to my own website. I was quite pleased with the (non-
jerky) results, shown here:
http://www.caperteebirder.com/index.php?p=1_18_sonograms
I have had no luck at all with YouTube, often I cannot fully play
video clips from others, they will stall part way through and never
resume. The download is always VERY slow even tho I have satellite
internet connection. My luck did not improve in trying to upload a
YouTube movie, even though my screen-capture software iShowU has a
preset YouTube format. But since the QuickTime movies did all that I
needed, I did not YouTube any further.
Vicki
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