[FFmpeg-user] Problem with vf pad ... help please

[Christian Ebert]

* Christian Ebert on Sunday, September 16, 2012 at 23:35:19 +0100
> * Mark Himsley on Sunday, September 16, 2012 at 14:20:12 +0100
>> Input #0, avi, from '/home/toto/blender/dronez.avi':
>> Duration: 00:03:11.24, start: 0.000000, bitrate: 1536 kb/s
>>   Stream #0:0: Video: mpeg4 (DX50 / 0x30355844), yuv420p, 720x576
>> 
>> Your original video is a 4:3 standard definition 720x576 file. You
>> might have a video player (QuickTime, for instance) that lies slightly
>> and tells you the file is 768x576 because it knows that standard
>> definition pixels are not square (although Apple should scale up to
>> 788x576, but that's another argument).
> 
> I'm interested - man mplayer lists:
> 
> spal:    768x576 (square pixel PAL)
> 
> Does this reflect a common misconception?
> 
> On the other hand 788 is not divisible by 16 ...

Found this:
http://www.sciencemedianetwork.org/wiki/Tutorials/Video/Pixel_Aspect_Ratio

Interesting indeed.

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