Help connecting to rtsp stream using javacv

[jain...@gmail.com]

I am new to Javacv and have been trying to connect to my zmodo security camera.  I was able to properly setup the javacv environment and able to load files locally.  However, connecting to camera is failing.  I verified the rtsp url using VLC and it worked.  However, I am unable to connect using FFmpegFrameGrabber.  Will appreciate your help to resolve the issue.  Program snippet and error returned are shown below.

Program snippet:

FFmpegFrameGrabber grabber = new FFmpegFrameGrabber("rtsp://admin:111...@10.0.0.8:10554/tcp/av0_0");

grabber.start();

IplImage frame = grabber.grab();

if (frame == null){

System.out.println("No Frame returned ..... ");

}else{

System.out.println("Frame returned ");

}

grabber.stop();

Error returned:

No Frame returned ..... 

[rtsp @ 000000000064dd60] CSeq 5 expected, 0 received.

[rtsp @ 000000000064dd60] Could not find codec parameters for stream 0 (Video: h264): unspecified size

Consider increasing the value for the 'analyzeduration' and 'probesize' options

Input #0, rtsp, from 'rtsp://admin:111...@10.0.0.8:10554/tcp/av0_0':

  Metadata:

    title           : streamed by the Zmodo RTSP server

  Duration: N/A, start: 0.000000, bitrate: 64 kb/s

    Stream #0:0: Video: h264, 90k tbr, 90k tbn, 180k tbc

    Stream #0:1: Audio: pcm_alaw, 8000 Hz, 1 channels, s16, 64 kb/s

[IMGUTILS @ 000000000293eea0] Picture size 0x720 is invalid

[IMGUTILS @ 000000000293ee10] Picture size 0x720 is invalid

[Samuel Audet]

On 12/24/2014 06:54 AM, jain...@gmail.com wrote:
> I am new to Javacv and have been trying to connect to my zmodo security
> camera. I was able to properly setup the javacv environment and able to
> load files locally. However, connecting to camera is failing. I
> verified the rtsp url using VLC and it worked. However, I am unable to
> connect using FFmpegFrameGrabber. Will appreciate your help to resolve
> the issue. Program snippet and error returned are shown below.

Sounds like a bug in FFmpeg. JavaCV 0.10 comes with a much newer version
of FFmpeg, so please try again with version 0.10! Thanks

Samuel

[jain...@gmail.com]

Thank You Samuel for your reply.  However, I am using JavaCV 0.10 and the ffmpeg version is 2.5.1. and am seeing the issue.  What is the best way to debug this issue?  Appreciate the guidance.

Thanks,

Jain

[Samuel Audet]

On 12/28/2014 08:56 AM, jain...@gmail.com wrote:
> Thank You Samuel for your reply. However, I am using JavaCV 0.10 and
> the ffmpeg version is 2.5.1. and am seeing the issue. What is the best
> way to debug this issue? Appreciate the guidance.

The error says to try to increase 'analyzeduration' and 'probesize'
options, so I guess we should be trying that. We'd have to modify
FFmpegFrameGrabber around `AVDictionary options` for that, which
shouldn't be too hard, but could you put this up as an issue on GitHub
so I don't forget?
https://github.com/bytedeco/javacv/issues
And of course if you create a patch yourself, please provide it! Thanks

Samuel