nginx rtmp-module can't execute ffmpeg

I am having an issue with nginx-rtmp-module exec ffmpeg command. i have followed the example on www.github.com/arut/nginx-rtmp-module

/home/junaid/bin/ffmpeg -f video4linux2 -i /dev/video1 -c:v libx264 -an -f flv rtmp://127.0.0.1:1935/myapp/mystream

the command is working fine in terminal

Config file:

rtmp {
server {
    listen 1935;
    ping 30s;
    notify_method get;

    application myapp {
    live on;
    allow play all;
    exec_static /home/junaid/bin/ffmpeg -f video4linux2 -i /dev/video1 -c:v libx264 -an -f flv rtmp://127.0.0.1:1935/myapp/mystream;      
 }
}

Error log: http://www.codepad.org/enD4wlZ9

I have tried:

• nginx running as root (have permission to execute ffmpeg)
• using ip instead of localhost
• using complete path to ffmpeg
• executing bash file (having ffmpeg and echo commands: echo commands execute just fine) from nginx

please help me resolve this issue

got it. the problem was permission error to /dev/video0 just changed /dev/video0 to rtsp address of camera