Re: [rtcweb] MTI motion JPEG

[Basil Mohamed Gohar <[e-mail]>]

On 11/30/2013 03:46 PM, Maik Merten wrote:
> Actually that may work. Toying around with mjpeg I found that, for
> instance, CIF video can be transmitted with somewhat usable quality at
> full framerate at slightly over one mbit/s. Usable quality at around
> half a mbit/s can be achieved by decreasing the framerate. Perceived
> picture quality can be increased by postprocessing (deblocking,
> deringing) or the decoding technique described in "William B.
> Pennebaker, Joan L. Mitchell - JPEG: Still Image Data Compression
> Standard, 1993". I would also assume that support for the arithmetic
> encoder could be mandated by now, increasing coding efficiency.
> 
> So this makes for a lousy video codec, but at least it's fast,
> "everywhere", presumably free of additional IPR risk, and flexible
> regarding frame size. I can also be used to occasionally push
> high-quality pictures (think slide shows), a use case H.261 included a
> hack for (4CIF) but would be better handled by MJPEG anyways.
> 
> 
> Maik
> 

Maik,

Can you share your technique for making your test clip(s)?  I am trying
but ffmpeg (the only tool I know how to do this with) keeps overshooting
severely the bitrate I set for it.

-- 
Libre Video
http://librevideo.org