[MEncoder-users] compression test

[Michael Rozdoba]

Tobias Brockamp wrote:
> Am 17.10.2007 um 22:04 schrieb Guillaume POIRIER:
> 
>> On 10/17/07, Tobias Brockamp <tobiasbrockamp at gmx.de> wrote:
>>> hi,
>>>
>>> is there a way to make a compression test with mencoder like it is
>>> implemented f.e. in stax rip or gordian knot?
>>>
>>> these tools take 5% off the video footage and outputs a quality value
>>> in % for the given target size, this is how i understand it.
>> tuxrip is a script that uses mencoder and does what you are  
>> requesting.
> 
> thanks, looks good. i hope i can easily port this to windows.

If you have any problems, as you're using Windows why not make use of 
AviSynth? SelectRangeEvery(300,15) or similar is the function you're 
after. Then run that through MEncoder with the codec set to give a 
constant high quality with few, if any, restrictions on quantisers. The 
resulting compression ratio should be a rough guide to compressibility 
of that source by that codec. E&OE.

-- 
Michael Rozdoba