[Ssc-dev] Meeting?

[Hans-Christoph Steiner]

On May 17, 2012, at 12:04 PM, Andrew Senior wrote:

> We had some network issues here.
> 
> My update - I have been working on ffmpeg filtering. 
> I have a blur option in the redaction filter and have been trying to store the unredacted data, though there are no examples of filters with two outputs except "split" which makes identical copies - so I've not managed to debug memory management issues. 
> In addition saving the output of two filters is only available in the bleeding-edge ffmpeg git repository (not  the latest stable 0.10. release) I think Hans-Christoph wanted us to be using a very recent build anyway?
> I'll clean up the blurring and look at temporal smoothing (to prevent superresolution attacks) in that and the pixellation cases.

I was using ffmpeg 0.9, which was the new thing at the time.  Since the big libav fork, ffmpeg seems to be making new point releases every week to piss off the libav people.  Arg...  The concern would be whether the latest from git is stable enough for the rest of the stuff we need.  And now ffmpeg is going crazy with releases, and libav is moving glacially slow because they want everything to be stable.


> I asked some people at YouTube about getting a download of the exact original upload and was told you can't get this. I understood that you can only download an mp4 transcode of whatever you uploaded.
> 
> I talked to some people about voice obfuscation and have some pointers I'll forward. My impression was that people weren't very optimistic about having quality + reliability + security.

Thanks, very interested in hearing more.  So "quality " here means intelligibility of speech?  and "reiliability" means maybe reliable transformation of the voice away from the original?  And I guess "security" means hard to reverse the obfuscation?

.hc

> I tried the latest build that Nathan sent out an email for but had problems with it crashing after redacting the video, not being able to edit boxes. This is on a stock ICS Galaxy Nexus.
> Andrew
> 
> On Thu, May 17, 2012 at 10:49 AM, Nathan of Guardian <nathan at guardianproject.info> wrote:
> On 05/17/2012 10:09 AM, Andrew Senior wrote:
> > I was hoping to come in to the meeting (at Satellite?) today but am late
> > again- I will join by hangout from work if that's convenient.
> 
> NP - will start a hangout in a minute.
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