Dud rows of pixels with ffmpeg-static

[dinkypumpkin]

On 15/10/2011 00:04, dinkypumpkin wrote:
> On 14/10/2011 16:12, Neill Mitchell wrote:
>> I now see about 10 rows of dud pixels at the bottom of all HD
>
> 1280x724, some as 1280x720. I would guess someone has come up with a
> more definitive answer since this issue first surfaced last year.

You query prompted me to do a bit of googling to look for more recent 
info on this issue.  As far as I can tell, the problem stemmed from 
limitations in FFmpeg that prevented it from cropping enough to produce 
1280x720 frames from iPlayer HD programmes.  A patch was applied to 
FFmpeg in Nov 2010 to address this.  That would explain the behaviour I 
see on my Ubuntu 11.04 box.  The ffmpeg-static from the PPA is of 
sufficiently recent vintage to include that patch, and thus does the 
necessary cropping, but the Ubuntu-supplied ffmpeg is from the 0.6 
branch, which was cut long before the patch applied.  I know this still 
doesn't shed any light why you would see the opposite behaviour, but it 
squares with what I'm seeing.