Get video file info

Question

Hi guys,
I need to write a simple applet which loads a video file (.avi, .rmvb, .mpg, .mkv) using FileChooser and reads its:
- fps
- resolution
- codec
Something like TellMeAboutDivx but in applet version.
I spent some time looking for some hints, but so far I didin't find any solution.
I'd appreciate any solution or helpful links.
Greetz,
Gh0st

Answer 1

Hi if you don't mean that you have to read it prior to opening the file.... I've basicly only worked with the capture part of JMF, as I gave up on it and made my own replacement.. but..
I would assume that there should be some great deal of similarities, have a look at :
FormatControl
Format
VideoFormat
formatControl = (FormatControl)player.getControl ( "javax.media.control.FormatControl" );
currFormat = formatControl.getFormat();
if ( currFormat instanceof VideoFormat ){
currentFormat = (VideoFormat)currFormat;
imageSize = currentFormat.getSize();
I hope there are some similarities to that, in worst case scenario have a look at the specs for the formats you are most likely to use. That way you can also get information prior to opening the files. I haven't done that myself since forinstance directshow has premade functions for this, but I've had to do it for audio formats for extracting data ds doesn't care about :) In this case id3v2 was a bit of work for making it work with all files (spits on "TSIZ" tag/frame), while forinstance id3v1 was a walk in the park. You know back in the old days we had to walk 20 miles with snow to up under our arms while wolves chased us just to get to school! And we had to make most of our picture encoders/decoders our selves to(well this part is at least serious). With most of these stoneage formats you had a header inserted either at the start or at the rear with all basic information such as version, width, height, bpp, compression type and usually tons of reserved that was never used. I bet some of these video formats are similar, and getting that info is a walk in the park.
Hmm you are making an applet.. I haven't messed around with that to much, but you cannot use JNI/JNative with that right because of the sandbox restrictions?
cheers and burps
stian