[Ssc-dev] InformaCam 0.1.42: more video fixes!

[Nathan of Guardian]

On 04/17/2014 09:05 PM, Harlo Holmes wrote:
> I believe the decision was made because the pixel-by-pixel
> JpegMediaHasher was not functioning properly if we scrubbed the exif
> data.  Nathan, please let me know if that's accurate.  If not: then I
> have a plan that would actually mitigate the whole issue (by extending
> the jpeg redaction library a little bit.)
>
Yes... I remember now. It was that we didn't want to modify the exiting
data of the source image, because it was affecting the verification
(even though we are meant to only be verifying the image pixel RGB
values, it was somehow interfering when we scrubbed the metadata). If
the user chooses to enable the Camera location feature, the location
will be in the EXIF. If they don't use that feature, we will still store
the location securely in the J3M, but it won't be insert by the Camera
app itself in the EXIF.

Now, we need to revisit our media hash comparison tools, because there
really should be no reason the image pixels are affected by the EXIF,
but we were out of time back in December, and wanted to get the basic
features working.

+n