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Re: [rtcweb] Transcoding objection/explaition/experience: Straw Poll on Video Codec Alternatives

Bjoern Hoehrmann <derhoermi@gmx.net> Sun, 12 January 2014 19:49 UTC

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From: Bjoern Hoehrmann <derhoermi@gmx.net>
To: Karl Stahl <karl.stahl@intertex.se>
Date: Sun, 12 Jan 2014 20:48:51 +0100
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Subject: Re: [rtcweb] Transcoding objection/explaition/experience: Straw Poll on Video Codec Alternatives
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* Karl Stahl wrote:
>[1] Transcoding VP8 ß> H.264 is very CPU intensive. Chrome with VP8 on old
>laptops with 1 core 1.5 Ghz x86 is not even usable. Core i5 CPU is fine. 

My netbook with an Intel Atom N270 (1.60 GHz, 2008) with some recent
version of ffmpeg can transcode 352x288 VP8 video to H.264 at 30 fps
with default options; with `-vprofile "baseline"` at over 40 fps. The
machine is sure to turn on the fan if you also decode and encode some
audio simultaneously, but the single core can handle the workload.
-- 
Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de
Am Badedeich 7 · Telefon: +49(0)160/4415681 · http://www.bjoernsworld.de
25899 Dagebüll · PGP Pub. KeyID: 0xA4357E78 · http://www.websitedev.de/

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