Mode sizes - but somewhat OT

Ralph Corderoy ralph at inputplus.co.uk
Sat Nov 18 10:55:14 PST 2017


Hi Charles,

> I'm looking at the modesizes for I Know Who You Are and note the
> lowest is c. 400MiB. I was wondering what sort of mode size we're
> talking about when watching that as default on an Android phone's
> iPlayer? I mean - approximately. No doubt the small device size should
> lower it?

get_iplayer's --info for PID b09ffrlp shows dvflow1 and dvflow2
approximated as 248MiB.  I downloaded b09ffrlp using

    ./get_iplayer --get --tvmode dvflow 3915

and got 318,790,871 bytes for 01:19:18.04 of video and audio.  That's
304.02 MiB.  `ffmpeg -i *b09ffrlp*.mp4' says

    Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661),
    yuvj420p(pc, bt709), 512x288 [SAR 1:1 DAR 16:9], 437 kb/s, 25 fps,
    25 tbr, 25k tbn, 50 tbc (default)

of which 512x288 is probably of most interest to you.

You should have a read of this page too, in particular
https://github.com/get-iplayer/get_iplayer/wiki/modesref#tv-modes

-- 
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy



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