[FFmpeg-devel] Best Android Configuration?

Reimar Döffinger Reimar.Doeffinger at gmx.de
Fri May 25 23:14:33 CEST 2012

On Fri, May 25, 2012 at 04:58:09PM -0400, compn wrote:
> On Fri, 25 May 2012 21:33:03 +0200, Reimar Döffinger wrote:
> >On Fri, May 25, 2012 at 03:06:56PM -0400, Kevin Kowalewski wrote:
> >> Hi,
> >> 
> >> We're currently using the following script to generate the appropriate
> >> configuration for Android, but find the performance is still not enough on
> >> a dual core Cortex A9 CPU under Android.
> >> 
> >> We suspect no hardware acceleration is possible yet with FFMpeg and Android.
> >> 
> >> Does anyone know of better configuration options?
> >
> >This really does not belong on this list, but if you have to ask
> >you generally shouldn't use stuff like --extra-cflags.
> >Particularly ones like -fpic -fno-strict-aliasing which are
> >just asking for bad performance for no good reason.
> it may be useful information for android arm docs, if anyone writes
> them.

This is not at all ARM-specific (neither the options, nor their effect),
it is general "don't shoot yourself in the foot on purpose" advice.
And unfortunately the mere existence of some way to set different CFLAGS
seems to invariably cause people to use it extensively to shoot
themselves in the foot, I have no idea why people insist not just
using the default config when I don't see why they would even think
to know better than the developers of that software and worse testing
would reveal that what they are doing is a bad idea.

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