[theora] super-low 19.5KB/s theora videos

[Tom Sparks]

--- On Mon, 4/1/10, Benjamin M. Schwartz <bmschwar at fas.harvard.edu> wrote:
> Tom Sparks wrote:
> > I am only able to get streamable videos at 19.5KB/s
> (156kb/s) due the transcoding and streaming from the mythtv
> setup over 900Km away
> 
> > the videos on the mythtv setup are 352x288 interlaced
> at 25fps at 524KB/s and the audio is 48000 stereo at
> 128KB/s
> > 
> > What are the best setting for 19.5KB/s (156kb/s)
> theroa video stream?
> 
> If you're using ffmpeg2theora, you want something like
> 
> ffmpeg2theora -A 32 -V 124
> 
> specifying the audio and video bitrates.  If you want
> to get fancy, you can do
> 
> ffmpeg2theora -A 32 -V124 -K 250 -d 500
> 
> which saves bits by only doing a keyframe once every 10
> seconds, and
> requiring the client to hold a 20-second buffer. 
> Naturally, you can
> choose your own parameters
> 

is it worth dropping the frame rate to 12.5, audio rate to 22050
and rescale the video to 320x240?

ffmpeg2theora -A 32 -V 124 -K 1250 -d 500 -F 12.5 -H 22050 -C 1 -x 320 -y 240 --deinterlace


tom


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