After some reasearch for a good performing java library to do different video conversions, we stumbled over many projects.
On closer inspection we found that most of them are old projects, with no one maintainig them any longer.
We finaly got to the jave project which did what we needed.
Unfortunally it is based on a old version of ffmpeg, which has some problems depending on the input/output formats used.
So we did upgrade the binaries, adapted the parsing code and added a few new features to the library.
After some time trying to contact the original author to push back the changes upstream, we descided to create a new project which is maintained by us.
We named this Jave2, to show the difference to the original jave probject.
The project is hosted on github, you can find it here.
Showing posts with label video. Show all posts
Showing posts with label video. Show all posts
Monday, March 4, 2013
Wednesday, February 20, 2013
Video encoding for Web
When you wish to publish your videos on your own homepage instead of hosting them on youtube, then there are several things to consider.
There exist a lot of tutorials, howtos and faq about this subject, but most are outdated or incomplete.
One of the best we have found is this Webpage: http://diveintohtml5.info/video.html#what-works
It explains what which browser expects and what is needed to get it working.
In short:
- Make a H.264+AAC+MP4 video for iOS and Safari
- Make a WebM video for almost all others, it's considered the future for web videos
Now you can put both files in a html5 video tag and it works almost on all devices.
One major problem is (of course, once more) IE 8 and older.
For these you have to use a flash player, which then plays the MP4 video
http://diveintohtml5.info/video.html#ie
When you convert your videos to MP4, then make sure to use baseline encoding, otherwise many (most?) players will only play the sound, but not the video (or not even the audio part of your video)
If you wish to convert the videos automatically from the commandline, then look for the ffmpeg package.
It might be worth to take one of the 1.x releases, instead of the onse bundled with your distribution, since many things got fixed, especially when it comes to H.264 videos
There exist a lot of tutorials, howtos and faq about this subject, but most are outdated or incomplete.
One of the best we have found is this Webpage: http://diveintohtml5.info/video.html#what-works
It explains what which browser expects and what is needed to get it working.
In short:
- Make a H.264+AAC+MP4 video for iOS and Safari
- Make a WebM video for almost all others, it's considered the future for web videos
Now you can put both files in a html5 video tag and it works almost on all devices.
One major problem is (of course, once more) IE 8 and older.
For these you have to use a flash player, which then plays the MP4 video
http://diveintohtml5.info/video.html#ie
When you convert your videos to MP4, then make sure to use baseline encoding, otherwise many (most?) players will only play the sound, but not the video (or not even the audio part of your video)
If you wish to convert the videos automatically from the commandline, then look for the ffmpeg package.
It might be worth to take one of the 1.x releases, instead of the onse bundled with your distribution, since many things got fixed, especially when it comes to H.264 videos
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