control over quality, framerate, etc

[rogerallen]

Hi Mike,

I was a bit disappointed by the default encoding quality from jcodec. You can see the macroblocks pretty clearly in this test example. (orig on left, movie frame on right)

I tried looking at the jcodec code to try to figure out how one would go about adjusting quality or bitrate, but it wasn't very obvious. I see you have framerate marked as TODO. So, when you get a chance if you could look at adding this control also, that would be cool.

For now, I'll try dumping frames & using ffmpeg. FWIW, it's going to be hard for jcodec to beat that combination--ffmpeg has lots of control, example commandlines, etc.

[mikera]

Hmmm yes I see what you mean. My wrapper over jcodec is pretty simplistic, I certainly haven't figured out how to control all the options yet. I'll see what I can do re: quality and framerate at least

[rogerallen]

Thanks for the quick feedback. Just FYI, here's what ffmpeg (an older version 1.1.3 I just had laying around) does with -crf 20...looks pretty good to my eye.

(original, jcodec, ffmpeg)