Question

I’m looking for an example of parsing an FLV header for duration specifically in Java. Given the URL of an FLV file I want to download the header only and parse out the duration. I have the FLV spec but I want an example. Python or PHP would be OK too but Java is preferred.

Answer 1

Do you have problems downloading the header or parsing it? if it’s downloading then use this code:

URL url = new URL(fileUrl);
InputStream dis = url.openStream();
byte[] header = new byte[HEADER_SIZE];
dis.read(header);

You can wrap InputStream with DataInputStream if you want to read int’s rather than bytes.

After that just look at getInfo method from PHP-FLV Info or read the spec.