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I have a BufferedImage object and want to be able to save this image in many extension.
(Examples) - PNG, JPG/JPEG, TIFF, BMP, WEBP, GIF, TGA
I looked up for a way using ImageIO class but it only supports PNG.
File f = new File("TEST_AIE.png");
try {
ImageIO.write(image, "png", f);
} catch (IOException ex) {
throw new RuntimeException(ex);
}
I searched for libraries but did not find any. Can you suggest a way or Library that I could not find.
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I'm looking an API for video and audio calling which is free and it can handle huge amount of user.
I have try ZegoCloud, VideoSDk, Agora.io all are paid after a certain limit.
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I want to parse a pdf which is having a table. But, couldn't find any library(in java) which could read a pdf in a format in which it appears.
Basically, the existing libraries read a table just as a string without preserving the format. So, what is the best way to parse it and get the list of key value pairs in java?
Pdf screenshot sample
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I want to compare the 2 images(images of people)and want a result that these are of same person or not(By Face recognization).I have to do this for millions of images so I cannot do it manually .Is there any api for android that can be used in my app.
You could use Camera.Face or FaceDetector.Face class. Take parameters of face on both photos and compare their parameters using e.g. eyesDistance(). If those parameters quite the same -> its the same person.
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the parquet docs from cloudera shows examples of integration with pig/hive/impala. but in many cases I want to read the parquet file itself for debugging purposes.
is there a straightforward java reader api to read a parquet file ?
Thanks
Yang
Old method: (deprecated)
AvroParquetReader<GenericRecord> reader = new AvroParquetReader<GenericRecord>(file);
GenericRecord nextRecord = reader.read();
New method:
ParquetReader<GenericRecord> reader = AvroParquetReader.<GenericRecord>builder(file).build();
GenericRecord nextRecord = reader.read();
I got this from here and have used this in my test cases successfully.
You can use AvroParquetReader from parquet-avro library to read a parquet file as a set of AVRO GenericRecord objects.
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I need a java api, that cannot use JMF, to play video interpreted by the SO codecs but i want to retrieve the each frames in java code. Somebody know some?
Have a look at FMJ. It does not require the Java Media Framework (JMF).
They have an example at the bottom of the page that writes out the first 5 frames of the video to files, so you should be able to get to the individual frames.
FMJ is very much out-of-date and JMF is a lost cause (yes one of those is IMHO). If you want something that works and will do exactly what you have described, try Xuggle. In their media tools examples they offer a simple player example using AWT / Swing.
http://xuggle.com/
If you're OK with Java wrapper around FFMpeg, try velvet-video.
Code snippet to extract images from a video file:
IVelvetVideoLib lib = VelvetVideoLib().getInstance();
try (IDemuxer demuxer = lib.demuxer(new File("/some/path/example.mp4"))) {
IDecoderVideoStream videoStream = demuxer.videoStream(0);
IFrame videoFrame;
while ((videoFrame = videoStream.nextFrame()) != null) {
BufferedImage image = videoFrame.image();
// Use image as needed...
}
}
A more advanced example of video player implementation using velvet-video can be found here.
Disclaimer: I am the author of velvet-video.