H264 lag about kxmovie

[kolyvan]

HI, Can you give me more info about video format (like bitrate, frame resolution), please?
You may get such data from the info view or from the output log.
Thanks.

[nokai]

A few seconds and lag rtmp://aragontvlivefs.fplive.net/aragontvlive-live/stream_normal_abt
& more rtmp://ucaster.eu:1935/live/definst/discoverylacajatv

[kolyvan]

Yes, sometimes it lags due to network latency.
The fast and crude way to fix it's to change NETWORK_BUFFERED_DURATION parameter.
Set it to 3.0 or 4.0.
The right way it's to change the buffering algorithm for remote files.
I have this issue in my TODO list, but I can't say anything about timeline.

Best wishes.

[nokai]

Ok, thanks, I'll try

[nokai]

I have been trying to change the NETWORK_BUFFERED_DURATION but does not fix the lag and does not work

Wait your updates.

Thanks

[sharp]

iPhone 4s and iPhone 5 is ok for me :)

[nokai]

I've tried these two directions* .... with an ipad2, iphone4 and iphone5 and works much lag, stutters.

rtmp://aragontvlivefs.fplive.net/aragontvlive-live/stream_normal_abt
rtmp://ucaster.eu:1935/live/definst/discoverylacajatv

You have changed anything?

[itkingdom]

Hi,

I tried your streams:
rtmp://ucaster.eu:1935/live/definst/discoverylacajatv
it's OK ok for me.
I think you first try on your PC to confirm you internet connection is fast enough

[itkingdom]

Could anyone try this stream: http://livecdn.megatv.vn/live/VTV3_Cluster_out
The first 15sec is very smooth, after then, lag & stutter : (

My definition
#define NETWORK_BUFFERED_DURATION 4.0

[sharp]

http://livecdn.megatv.vn/live/VTV3_Cluster_out is ok for me , I have watched half an hour :P

[itkingdom]

Cool! May be internet speed issue, like what @nokai had :-D

[itkingdom]

By the way, what is your NETWORK_BUFFERED_DURATION value?

[sharp]

I didn't modify anything , I think you can ping your server to check network is ok.

#define DEFAULT_DECODE_DURATION   0.1
#define NETWORK_BUFFERED_DURATION 2.0

To @kolyvan

I hope one feature : It will be good to add reload url api for KxMovieViewController, so I can reload the url to replay if there are some errors when live streaming

[nokai]

The problem is with ffmpeg

I try with rtmp://ucaster.eu:1935/live/definst/discoverylacajatv

#define DEFAULT_DECODE_DURATION   0.1
#define NETWORK_BUFFERED_DURATION 4.0

in simulator and works well.

but on the iphone 4 with wifi, the same connection (very good). lag imagen & audio

2012-12-27 16:32:39.099 KxMovieExample[3483:6503] desync audio (lags) skip 2.0520 0.0260

in iphone 5

2012-12-27 16:39:38.055 KxMovieExample[3231:6903] desync audio (lags) skip 73.7990 71.7890

:(

[itkingdom]

I think it's buffering issue, not ffmpeg : ) @kolyvan may give us some ideas how to solve

[kolyvan]

Hi All,

I pushed the commit 0ba37a3 to new branch 'network'.
There are small improvements of buffering network-based streams.
Certainly it cannot solve bandwidth issue, but buffering process will a little more clear for user.

Thanks all for feedback.