[Libav-user] Speedup FFmpeg h264 Decoding on Android-Devices

[Christian Brümmer]

Okay i will consider that if i am not able to speedup ffmpeg decoding.

First I will post my results after using the x264opts Hendrik provides ( 
"zerolatency,fastdecode" ).

Am 04.08.2012 17:52, schrieb Alex Cohn:
>
> On Aug 4, 2012 5:22 PM, "Christian Brümmer" <christian.bruemmer at gmx.de 
> <mailto:christian.bruemmer at gmx.de>> wrote:
> >
> > For sure i first tried to use the Android MediaPlayer in combination 
> with a RTSP-Stream but it has a - not configurable - frame buffer 
> which size dependends of the rtsp fps. The result is a delay about 3-5 
> seconds which is a known problem as i discovered.
> > so for a real time video application your on your own..
>
> You could directly call the built-in stagefreight avc decoder, this 
> approach does not introduce extra latency. But the number of instances 
> is limited - three or four, not more.
>
> BR,
> Alex Cohn
>
> > But anyway i thought there might be a few lever (on the encoding 
> system) which i have to move to increase the decoding performance!
> >
> > What about the fast-decoding tune - how can i combine that with my 
> zero latency configuration?
> >
> > Am 04.08.2012 16:05, schrieb Michael Bradshaw:
> >>
> >> On Aug 4, 2012 6:11 AM, "Christian Brümmer" 
> <christian.bruemmer at gmx.de <mailto:christian.bruemmer at gmx.de>> wrote:
> >> >
> >> > Hi,
> >> >
> >> > i am using FFmpeg for H264 Decoding on an Android Device.
> >>
> >> Out of curiosity, is there a reason you aren't using Android's 
> native decoder? It may be more optimized for the device than FFmpeg 
> too. Sorry I don't know how to make FFmpeg faster.
> >>
> >> --Michael
> >>
> >>
> >>
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