The system must be more modular!

I'm testing a new extremely cheap image capture device called EasyCAP 002 USB 2.0 DVR and I noted that the system should be more modular to accept distinct capture devices such as a Geovision GV-800 card and an USB capture device EasyCAP, as shown in the picture below.

So, I decided to rewrite all the grab module to turn this more modular and accept different capture devices hardware. I hope it will be available in the next release 0.1.0.

Links:

• https://code.google.com/p/easycap-somagic-linux/
• http://ubuntuforums.org/showthread.php?t=1964103

Release 0.0.9

Release notes

• Refactored the event recording routine to use /dev/shm buffers to store the frames used to create the video.
• Refactored grabc to use mmap instead read capture method.
• Added continuous recording mode.
• Configured a delay to start each device grab process.
• Added '-preset veryfast' parameter to create video ffmpeg command.
• New /scripts folder to store some usefull scripts.
• New /app/scripts folder to store some shell scripts used by the system.
• New client features: snap, keyboard keys to move and resize cameras, context menu, main menu and more.
• Moved the saved client grid configurations from the client to the server.
• Cameras thumbnails.
• New main page with thumbnails and more links.
• New configuration parameters.
• New cameras parameters: rec_fps and remote_fps.
• Adjust the cameras fps rate relative to the real device fps rate.

Screenshots

 

Main page

 

Customized grid page

Events page

Release 0.0.8

Release notes

• Unified view and grid views. A grid is a view with multiple cameras and a view has only one camera view. Same views, javascript files and stylesheets for both.
  
• New getCamerasSortedArray() method in config to return a sorted cameras array. This is used to display the cameras list properly ordered.

Release 0.0.7

Release notes

• Implemented the grab exit event to try to rerun the process after a short delay.
• Max video time limit in seconds.
• Links to grid, views and events in the cameras list at the main page.

Release 0.0.6

Release notes

• Socket.io reconnect ok. Moved the for loop that emits subscribe events for the cameras into the connect event. After reconnect this event is fired again.
• Alert box to show client disconnect.
• Fixed a bug in using the '(new Date()).toISOString().substr(0,10)' expression to get the date folder name where the recordings are saved. The time returned did not consider the  timezone.
• Added -y option in ffmpeg command to overwrite output files without asking.

Release 0.0.5

Release notes

• New page for viewing the recorded events.
• Fixed bug with event mp4 video generated. Added "-pix_fmt yuv420p" output parameter to the ffmpeg command. Now the generated video plays in Google Chrome browse.

Convert multiple jpeg files to mp4 video using ffmpeg

This doesn't work:

ffmpeg -r 2 -f image2 -i %05d.jpg out.mp4

The video generated doesn't play in Chrome.

The problem is with the pixel format. This is the correct way to generate the video:

ffmpeg -r 2 -f image2 -i %05d.jpg -pix_fmt yuv420p out2.mp4