https://github.com/yev/java-ffmpeg-pipe
Simple yet powerful example of integration ffmpeg with java
https://github.com/yev/java-ffmpeg-pipe
Last synced: about 1 year ago
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Simple yet powerful example of integration ffmpeg with java
- Host: GitHub
- URL: https://github.com/yev/java-ffmpeg-pipe
- Owner: yev
- License: apache-2.0
- Created: 2014-04-11T18:46:21.000Z (about 12 years ago)
- Default Branch: master
- Last Pushed: 2014-04-23T07:12:21.000Z (about 12 years ago)
- Last Synced: 2025-02-15T20:57:07.863Z (over 1 year ago)
- Language: Java
- Size: 211 KB
- Stars: 11
- Watchers: 2
- Forks: 5
- Open Issues: 0
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Metadata Files:
- Readme: README.md
- License: LICENSE
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README
java-ffmpeg-pipe
================
Simple yet powerful example of integration ffmpeg with java
================
In my last project I encountered the very intresting task: save the snapshots (images) from an RTMP stream into the
memcached server.
The first solution was to use the file system as a temporary media storage for getting the images from ffmpeg.
Then the java service listens for the events from the specific folder and once getting the event, read the file from FS and push the binary data to the memcached.
The problem is FS triggering event speed. It was too fast, al least for ext3. So the image wasn't completly written to the disk but Java service was already notified about the file creation. And binary data send to memcached was truncated and the image wasn't displayed properly.
We needed to get rid of FS and read row binary data directly from ffmpeg and push it to ff.
We can do it with a pipe.
But how to distiguish differnt images in the pipe binary stream.
Solution
----------
My hack is to use a particlur binary signature of the end of image format (png and jpeg). The valid image file has always 2 last bytes equal to FF D9
Another, more elegant solution with pure Java approach is using [Xuggler](http://www.xuggle.com/xuggler/) library. Xuggler has JNI calls to embeded ffmpeg to get job done.