i.MX ProcessorsのトピックRe: Android4.4.2 UDP stream on i.MX6Q

Android4.4.2 UDP stream on i.MX6Q

lqll — Tue, 22 Sep 2015 14:44:27 GMT

Hi,sir:

According to <i_MX_Android_Extended_Codec_Release_Notes>,I update android_kk4.4.2_1.0.0-ga_omxplayer_source.tar.gz ,then I can play udp stream on i.MX6Q,but I found that only some video can play well,others full of pixelization and the sound often stop.

All my test video are 25~30FPS,4000~5000kb/s,720P or 1080P,and all encode in H.264.

I use vlc on my PC to be streaming server,and use Gallery on android4.4.2 to be streaming client.

So,please help me.

Re: Android4.4.2 UDP stream on i.MX6Q

lqll — Tue, 22 Sep 2015 15:00:08 GMT

I forget to say,all my test video are play well when they stored in eMMC or played by http protocal.

Re: Android4.4.2 UDP stream on i.MX6Q

jamesbone — Tue, 29 Sep 2015 13:15:09 GMT

Hello Iql,

This scenario it is not going to work , because the Android Gallery does not have the feature to receive information through the streaming server, you need an application that handle this feature, for example adding the VLC client to your android device or any other APP that handle the streaming functionality

Have a great day,
Jaime

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Re: Android4.4.2 UDP stream on i.MX6Q

lqll — Mon, 14 Dec 2015 06:41:32 GMT

All right,I fix it.The problem caused by the tiny UDP buffer.

Change this file:

~/android/external/fsl_imx_omxlib_ffmpeg/libavformat/udp.c

-#define UDP_MAX_PKT_SIZE 65536

+#define UDP_MAX_PKT_SIZE 1048576