Record video aspect changes while recording

[stuartm]

Originally requested by Xris and Kormoc as necessary to select the correct aspect ratio for flash streaming and nuxexport.

This actually has potential for some other applications, one side benefit is that by simply changing the mark types I've instantly edited out adverts from some of my recordings.

Attached is the first version of the patch, with support for mpeg2 recordings. AVC will be added once I have time to read the specs (help would be appreciate here).

Feedback is appreciated.

[stuartm]

(In [18558]) Record aspect ratio changes in recorded markup during recording. Mpeg2 only at the moment.

[Janne Grunau]

(In [18593]) Initialize aspectRatio to zero, Refs #5755

[Janne Grunau]

(In [18594]) remove debugging VERBOSE statement. Refs #5755

[Janne Grunau]

records the aspect ratio of H264 recordings

[Janne Grunau]

t5755_h264_aspect.diff should store aspect ratio infos for H264 recordings

MARK_ASPECT_OTHER should store aspect ratio * 100000 in the new data column ([19149]) of recordedmarkup.

the mpeg2 code has a little bug, ASPECt_1_1 is not the display aspect ratio but sample aspect ratio.

[Janne Grunau]

(In [19151]) implements aspect ratio storing for H264 video. Refs #5755

Stores non standard aspect ratios as aspect * 1000000 in the data column ASPECT_1_1 for mpeg2 means sample aspact ratio, compute the display aspect ratio from width, height and save it in the data column