I don't think this is exactly what you're looking for, but I'll throw it out anyway.<div><br></div><div>For a class that I teach on video editing, I wrote a program that presents the output from different encoders (all currently in ffmpeg, but the code could be hacked to use other command line encoders) to the user for manual comparison. </div>
<div><br></div><div>Here's an example of the page comparing it all:</div><div><a href="http://mediaintro.sagradocorazon.info/Video/Clips/SintelTrailer/sintel_constant_demo/sintel_clip_small.html" target="_blank">http://mediaintro.sagradocorazon.info/Video/Clips/SintelTrailer/sintel_constant_demo/sintel_clip_small.html</a></div>
<div><br></div><div>There's lossless png images of individual frame captures that you can compare. There is also a comparison tool which is a bit of javascript that will cycle through a selection of the various frames, so you can visually see the differences:<br>
<a href="http://mediaintro.sagradocorazon.info/Video/Clips/SintelTrailer/sintel_constant_demo/sintel_clip_small_5s.html" target="_blank">http://mediaintro.sagradocorazon.info/Video/Clips/SintelTrailer/sintel_constant_demo/sintel_clip_small_5s.html</a></div>
<div><br></div><div>Like I said this is more of a tool to demonstrate the differences in codecs than to actually test their quality. Anyway, the source code is available on github:</div><div><a href="https://github.com/teeks99/codec-smash" target="_blank">https://github.com/teeks99/codec-smash</a></div>
<div><br>Tom</div><div><br><div class="gmail_quote">On Sat, Oct 20, 2012 at 4:29 PM, Ran Shalit <span dir="ltr"><<a href="mailto:ranshalit@gmail.com" target="_blank">ranshalit@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
Can anyone refer me to information of codec quality test, i.e. how to<br>
evaluate codec performance.<br>
<br>
Thanks,<br>
Ran<br>
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