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Old 09-26-2012, 07:29 AM   #211
twobob
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Posts: 6,552
Karma: 6015922
Join Date: Jun 2012
Location: uti gratia usura (Yao ying da ying; Mo ying da yieng)
Device: PW-WIFI|K5-3G+WIFI| K4|K3-3G|DXG|K2| Rooted Nook Touch
Quote:
comment : license: http://creativecommons.org/licenses/publicdomain/
Duration: 00:47:37.25, start: 0.000000, bitrate: 579 kb/s
Stream #0.0(und): Video: h264 (Constrained Baseline), yuv420p, 320x240 [PAR 1:1 DAR 4:3], 512 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
Stream #0.1(und): Audio: aac, 32000 Hz, stereo, s16, 63 kb/s
Metadata:
creation_time : 1970-01-01 00:00:00
Output #0, s16le, to 'pipe:':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: mp41
creation_time : 1970-01-01 00:00:00
title : Internet Governance Raw Footage: OLPC Press Conference - http://www.archive.org/details/igove...tage_OLPC_PR_1
date : 2005
comment : license: http://creativecommons.org/licenses/publicdomain/
encoder : Lavf53.5.0
Stream #0.0(und): Audio: pcm_s16le, 32000 Hz, stereo, s16, 1024 kb/s
Metadata:
creation_time : 1970-01-01 00:00:00
Stream mapping:
Stream #0.1 -> #0.0
Press [q] to stop, [?] for help
Playing raw data 'stdin' : Signed 16 bit Little Endian, Rate 32000 Hz, Stereo
[root@kindle root]# ffmpeg -i http://bit.ly/SztbrN -acodec pcm_s16le -r 32000 -f s16le - | aplay -r 32000 -f S16_LE -c 2


As an aside: that handles the audio for about 20% of the processor in real-time.
Cvm want's about 4% on average.

Should really get an idea of the kind of footprint the standard kernel leaves us and it's approximate processor service debt.

Thumb in the air I would say 6% is service debt.

that's really not so bad: wifi-streaming, parsing, demuxxing, re-encoding and streaming to hardware with book garbage roaming in the mire for around a quarter of the processor... makes my vision of a kindle synth with visual feedback a hell of a lot more realistic than on a 3.

perhaps GM will has some insight (incite? ) on the whole ffmpeg, raw2gmv, gmplay "Trinity".

Last edited by twobob; 09-26-2012 at 09:59 AM. Reason: url was wrong (made it shorter now bit.ly/SztbrN)
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