[Bug 685103] mpegvideoparse: wrong pixel-aspect-ratio

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=685103
  GStreamer | gst-plugins-bad | 2.x

--- Comment #9 from sreerenj <bsreerenj at gmail.com> 2013-01-29 15:52:38 UTC ---
Yup, vlc is playing with almost double size  :)..Is it the case which needs
frame-cropping support? Do we support frame cropping?,,,which means, if the
encoded data specify the cropping region? 

As per the spec , "display_horizontal_size and display_vertical_size together
define a rectangle which may be considered as the "intended display's" active
region. If this rectangle is smaller than the encoded frame size, then the
display process may be expected to display only a portion of the encoded frame.
Conversely if the display rectangle is larger than the encoded frame size, then
the display process may be expected to display the reconstructed frames on a
portion of the display device rather than on the whole display device. "

"display_horizontal_size and display_vertical_size do not affect the decoding
process but may be used by the displayprocess that is not standardised in this
Specification.
"
We are not passing the display_horizontal_size to downstream elements. Which
means,

here width=352, height=576, display_horizontal_size=720.
PAR is calculating based on "720" . But video-sink always using the default
width "352".

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