How to use the LookSee Encoder API
LookSee Encoder is essentially a slimmed-down FFmpeg implementation that runs on Android. It can encode a video from a series of images, create a series of images from a video file, and convert videos between formats. It's packaged as a standalone application that you download to your device. Once downloaded, an application communicates with it via broadcast Intents. Some example code illustrating how to use it can be downloaded here.
- If you're encoding a series of images into a video, be sure and name the image files sequentially as 9-digit 0-padded numbers, for example 000000005.jpg. The numbers cannot skip. FFmpeg finds the files to include the video as "%09d.jpg". It will run through the list of files in sequence until it can't find any more files. If the file names skip a number (e.g. 000000005.jpg, 000000007.jpg), FFmpeg will stop at #5.
- Following the link to LookSee Encoder, you'll notice a low rating. This is the result of a total of 1 rating from someone named "kristhian" who tried to convert a 2-hour movie on his Android device. It took a very long time. If kristhian had tried to perform the same task on a dual-core desktop PC, it's likely it would have taken more than the hour he complained about. Honestly, I hadn't considered someone trying to convert a feature-length film with it. So, just a note. If you write an app that handles long videos, you might want to warn the user about the time required to extract all the frames from Lord Of The Rings.