pYUV freeware presentation

As explained in other sections, NAO's camera provides natively YUV422 color images. These images are used to create arv video files or ari image files that, in addition, are timestamped. As this format is not common, it can't usually be opened by common viewers. This is where pYUV steps in.

pYUV is a multiplatform (Windows, Mac and Linux) freeware and can be downloaded from its main page (http://dsplab.diei.unipg.it/pyuv_raw_video_sequence_player) or other sites.

This software can display several non common image and video formats. For arv and ari files, open pYUV, drop the file on, and set the different fields accordingly to what follows :

Main settings / Size: Custom with 640x480, 320x240 or 160x120 depending on the resolution used for recording
Main settings / Color space: YUV
Main settings / Subsampling: 4:2:2
Main settings / Ordering: YUY2
Main settings / Interleaved: checked
Main settings / Anamorphic: unchecked
Extra settings / Bits per sample: 8
Extra settings / Header bytes: 32

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