I tried the "zerolatency,fastdecode" combination and the results are
amazing!
Before fastdecode the avg (about~ 200 measurements) was 19,8 ms per
frame. Now on fastdecode (if iam not doing anything wrong) the avg is
10,52. Almost the half of the processing time.
The avg framesize for both is exact the same: 11722 bytes (for the first
300 frames).
This is great and it is enough for my application environment! Thanks
for the help!
Am 04.08.2012 20:20, schrieb 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"
<[email protected] <mailto:[email protected]>> 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"
<[email protected] <mailto:[email protected]>> 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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>
>
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