Algorithm for searching time code based searches in video surveillance footage

Question

0.00/5 (No votes)

See more:

Is it possible to clip particular video by entering time?

For example:-
If video of 1 hour starting from 1:00-2:00 clock and if we enter time 1:10 T0 1:45 is it possible to clip video in that time and to play? If yes then how is it possible?
Please tell. If algorithm is there please provide link.

Posted 22-Aug-11 3:51am

jyoti87

Updated 22-Aug-11 4:01am

LittleYellowBird

v2

Add a Solution

Comments

LittleYellowBird 22-Aug-11 10:02am

Hi, I have changed your all capitals to normal 'upper/lower' case as all capitals looks like shouting and it is unlikely to encourage people to help you.

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Simon Bang Terkildsen · Answer 1 · 2011-08-22T04:15:00

Solution 1

Yes it is possible, but it's not as simple as applying an algorithm. I've use FFmpeg[^] in the past to play around with videos, you might wan to give it a look. There are probably some alternatives, but I don't know any other library than FFmpeg.

Posted 22-Aug-11 4:15am

Simon Bang Terkildsen

TheyCallMeMrJames · Answer 2 · 2011-08-22T05:29:00

You have to keep in mind that video from surveillance will be compressed, so each frame is a different size.

Without first indexing the video footage, their is no way to extract video based on timecode. You must first iterate over the video, frame by frame, so that you have an indexed view of the video. This is the only way to do it.

As mentioned, you can use a library like FFmpeg to help you out. I've also created my own objects to represent videos and frames for this very purpose when working with mjpeg footage; I had to get the format spec directly from the engineers of the video capture card and use a RCL wrapper to extract the frames.

If you can inject your own code into the pipeline, you can do this heavy-lifting work in real time as the video is captured and save the indexes in a 'buddy' file or database.

Cheers.