Hi Julian. For your reference, the performance of ffmpeg on a certain h.264 video decode has regressed since 4.4.0.
See: http://ex.seabright.co.nz/helpers/benchcompare for the relative numbers. We're significantly better than 4.4.0 in the two other test videos, and better than 4.5.1 in all.
The video itself is here: http://ex.seabright.co.nz/misc/cbuild/live/cbuild/files/ffmpeg/03-src13_hrc7...
ffmpeg is configured with -mfpu=vfp3 with the hand-written assembler backend turned off. The vfp3 is an accident - I forgot to explicitly set it to neon.
You can see how to ffmpeg was configured here: http://ex.seabright.co.nz/misc/cbuild/live/cbuild/lib/ffmpegbench.mk
The particular version is available here: http://ex.seabright.co.nz/misc/cbuild/live/cbuild/files/ffmpeg-0.6.tar.xz
If you have time, please have a look at it. If not file a ticket on Launchpad and we'll look at it as part of the speed improvements.
-- Michael
+++ Michael Hope [2010-09-30 13:28 +1300]:
Hi Julian. For your reference, the performance of ffmpeg on a certain h.264 video decode has regressed since 4.4.0.
See: http://ex.seabright.co.nz/helpers/benchcompare for the relative numbers. We're significantly better than 4.4.0 in the two other test videos, and better than 4.5.1 in all.
The video itself is here: http://ex.seabright.co.nz/misc/cbuild/live/cbuild/files/ffmpeg/03-src13_hrc7...
Clicking on this link caused firefox to try the render the entire movie as an insanely long web page, which made it run incredibly slowly such that it took me about 45 mins to find out why my browser was jammed even after restarting.
Just a warning to save others from some aggravation.
Wookey
On Fri, Oct 1, 2010 at 12:21 AM, Wookey wookey@wookware.org wrote:
+++ Michael Hope [2010-09-30 13:28 +1300]:
The video itself is here: http://ex.seabright.co.nz/misc/cbuild/live/cbuild/files/ffmpeg/03-src13_hrc7...
Clicking on this link caused firefox to try the render the entire movie as an insanely long web page, which made it run incredibly slowly such that it took me about 45 mins to find out why my browser was jammed even after restarting.
Just a warning to save others from some aggravation.
I've gone through everything under .../files and made sure binary files come down as binary files. nginx doesn't seem to use the system /etc/mime.types so I ended up adding .264, .h264, .ogg, .tar (!), and .tgz.
-- Michael
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Michael Hope -
Wookey