[Bug 684991] videobox: sometimes incorrectly crops producing visual artifacts, and green instead of black border

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=684991
  GStreamer | gst-plugins-good | 1.0.0

Stirling Westrup <swestrup> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|FIXED                       |

--- Comment #2 from Stirling Westrup <swestrup at gmail.com> 2012-11-26 04:26:08 UTC ---
Testing videobox with GStreamer 1.0.2, I do see major improvements, but there
are still use cases I have that show strange cropping artifacts. One example I
just ran across is this:

gst-launch-1.0 filesrc location=~/Videos/BigBuckBunny1080p.avi ! decodebin !
videobox top=0 bottom=540 right=959 left=-2 ! xvimagesink

This produces a color-distorted image with diagonal stripes of bright color
across the image. My debug dump shows that I420 is the image format being
cropped.

Here is an ffprobe of my copy of BigBuckBunny, in case that is useful:

Input #0, avi, from '~/Videos/BigBuckBunny1080p.avi':
  Metadata:
    encoder         : AVI-Mux GUI 1.17.7, Aug  8 2006  20:59:17
    JUNK            : 
  Duration: 00:09:56.45, start: 0.000000, bitrate: 12455 kb/s
    Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p,
1920x1080 [SAR 1:1 DAR 16:9], 24 tbr, 24 tbn, 24 tbc
    Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), s16,
448 kb/s


Big Buck Bunny can be freely downloaded here, if you don't already have a copy.
http://www.bigbuckbunny.org/index.php/download/

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