[theora] Introduction

Basil Mohamed Gohar abu_hurayrah at hidayahonline.org
Sat Aug 29 14:23:19 PDT 2009

Hash: SHA1

On 08/30/2009 02:42 AM, Ralph Giles wrote:
> On Fri, Aug 28, 2009 at 5:19 PM, Basil Mohamed
> Gohar<abu_hurayrah at hidayahonline.org> wrote:
>> Thanks Ralph.  Any specific versions (like all that betas, or just the
>> most recent one)?  Can I pull the code from SVN, or should I use the
>> tarballs?  If from SVN, which revisions?
> I'm most interested in timing differences between the 1.0 release and
> the current svn trunk. Decode speed, and encode speed in the default
> constant-quantizer modes, and comparing those to the new constant
> bitrate and two-mass modes. It would also be nice to have timing on
> both 32 bit and 64 bit machines if you have access to both.
> Thanks for taking an interest!
>  -r
I've finished doing some runs last night, the details of which I'll
post when I have more time (later today, hopefully), but I found, on
overage, libtheora-1.1beta3 used about 1/3 more time than
libtheora-1.0 for various types of video files I have lying around or
I can generate easily.

Note, I only tested constant quantizer (i.e., quality) mode encoding.
I did not have time to do the rest, but I don't mind doing so when I
get the chance.

If you prefer I use svn trunk, I can switch to that as well.

I do not currently have access to a 64 bit machine right now, though I
have one back home and would love to help with multi-architecture
testing in the future.

Note, for all testing I used example_encoder with a yuv4mpeg video
stream I had exported to /dev/shm, so input was also limited to under
750 MB.  I only have my nearly 5-year-old laptop at the moment...

- -- 
      Basil Mohamed Gohar
abu_hurayrah at hidayahonline.org
basilgohar on irc.freenode.net
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