[MEncoder-users] Codec-independant objective quality measurement

[Loren Merritt]

On Fri, 4 Aug 2006, Matthias Wieser wrote:
> Am Donnerstag, 3. August 2006 12:28 schrieb Nicolas George:
>
>> I started doing roughly the same thing a few days ago. I use yuv4mpeg and
>> pipes instead of pnm and temp files, which is a little bit more efficient
>> (especially because it does not require 60 megaoctets of temporary
>> storage space for each second of DVD-quality evaluated material :-), but
>> the principle is exactly the same. I intend to publish the result when it
>> will be a little bit more polished.
>
> I'm interested in your script. I thought about pipes but could not find an
> easy solution, hence the temp files. But hdd space is cheap :-)

mkfifo a.yuv b.yuv
ffmpeg -i $FILE1 -f rawvideo -y a.yuv &
ffmpeg -i $FILE2 -f rawvideo -y b.yuv &
tiny_psnr a.yuv b.yuv

--Loren Merritt