CODEWITHSUNDEEP
objective-ccocoa
Alex Molskiy
Alex Molskiy

Reputation: 865

How to determine video codec

I want to develop small mac (not iphone) application for self-educational purpose. What application should do: just open video file and show information about video codec.

Main problem is that i never work with media files and i don`t now from which point i can start.

May be somebody can advice some articles or may be even examples?

Upvotes: 0

Views: 963

Answers (2)

Anne
Anne

Reputation: 27073

I strongly recommend using something like FFmpeg to get codec information.
Simply run the following command through NSTask:

ffmpeg -i video.mpg

Project page:
http://www.ffmpeg.org/

Extracting this information yourself is a LOT of work.
Every video format stores things different.
Not to mention error-handling and corrupted files.

Upvotes: 3

James
James

Reputation: 9288

The codec data is usually held in container formats. To start you should pick one container format and parse that, a popular one would be the MPEG4 container format. Follow the links from this page to get you started. http://en.wikipedia.org/wiki/MPEG-4_Part_14

Upvotes: 0

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