[FFmpeg-devel] Issues in Creating SDP for a H264/AAC file

[Amruta]

Hello,

 

I have recorded a video from my Samsung Galaxy S (Android 2.2) phone which I
am trying to stream. But there are problems in creating SDP for that file. 

 

Here are the ffprobe details:

 

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
'/home/yadnesh/Media/video-2011-04-13-15-13-09.mp4':

  Metadata:

    major_brand     : 3gp4

    minor_version   : 768

    compatible_brands: 3gp43gp6

  Duration: 00:00:09.72, start: 0.000000, bitrate: 3457 kb/s

    Stream #0.0(eng): Audio: aac, 16000 Hz, mono, s16, 56 kb/s

    Stream #0.1(eng): Video: h264, yuv420p, 720x480, 3435 kb/s, 29.85 fps,
1k tbr, 30k tbn, 60k tbc

 

Following is the SDP that gets created:

 

SDP:

v=0

o=- 0 0 IN IP4 192.168.1.122

s=No Name

t=0 0

a=tool:libavformat 52.64.2

m=video 0 RTP/AVP 96

c=IN IP4 192.168.1.122

b=AS:3435

a=rtpmap:96 H264/90000

a=fmtp:96 packetization-mode=1; sprop-parameter-sets=

a=control:streamid=0

m=audio 0 RTP/AVP 97

c=IN IP4 192.168.1.122

b=AS:56

a=rtpmap:97 MPEG4-GENERIC/16000/1

a=fmtp:97
profile-level-id=1;mode=AAC-hbr;sizelength=13;indexlength=3;indexdeltalength
=3; config=1408

a=control:streamid=1

 

When I debugged, I found that while creating sdp it does not go in to the
loop (of function static char *extradata2psets(AVCodecContext *c))

            while (r < c->extradata + c->extradata_size) {

    }

 

Can you please help me with the causes of such wrong SDP?

 

-Thanks in advance.

Amruta