Public bug reported:
Binary package hint: mencoder
Start with an NTSC video, 720x480, with a 16:9 aspect ratio. It may be
progressive or interlaced; doesn't matter. (This may also hold true for
PAL/SECAM, but I have no way to know). Call this file input.avi
Do this:
mencoder input.avi -vf scale=854:480 -ovc lavc -oac copy -ffourcc DX50
-lavcopts vbitrate=1200:vhq -o output.avi
Once it finishes spinning, view the video. You will observe that the
left and right edges of the image are torn very badly.
This also works incorrectly if you do this:
mplayer input.avi -vf scale=854:480
...which leads me to believe that it is the scale filter itself that is
not working correctly.
Finally, changing the X value changes the level of tearing. Values
around 720 aren't impacted, neither are values over 1024. While this
gives me a workaround, it means I have to use something that is not
exactly what I wanted.
This problem affects MENCcoder 2:1.0~rc1-ubuntu13.1 (the version for Gutsy)
This problem DOES NOT affect MEncoder 2:1.0~rc1-0ubuntu9.2 (the version for
Feisty)
** Affects: mplayer (Ubuntu)
Importance: Undecided
Status: New
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mencoder used with -vf scale tears picture edges for certain range of x values
https://bugs.launchpad.net/bugs/175002
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