[mythtv-users] 1080i HD without XvMC, how much horsepower?

Scott Alfter mythtv at salfter.dyndns.org
Tue Oct 3 18:54:03 UTC 2006

Steven Adeff wrote:
> On 10/3/06, Scott Alfter <mythtv at salfter.dyndns.org> wrote:
>> If the MPEG-2 decoder used by MythTV is mostly single-threaded (can
>> someone confirm or deny this?), the larger cache and faster clock speed of the
>> 3700 would be a win [over the X2 3800].
> From what I've read ffmpeg doesn't support threaded playback. The
> ffmpeg dev's seem to take the stance that threaded playback is not
> worth the time it would take to solve all the issues that would come
> up in implementation.

I suspected that would be the case.  IIRC, there aren't many places where you
can take advantage of multithreading in MPEG-2 decoding, and the housekeeping
involved in keeping all of the threads working together would most likely
negate much of the performance gains you might see.

 / v \ Scott Alfter (remove the obvious to send mail)
(IIGS( http://alfter.us/            Top-posting!
 \_^_/ rm -rf /bin/laden            >What's the most annoying thing on Usenet?

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