metadata

If a Image file is of format .png then it will contain ‰PNG , at the beginning of the file. (when read in Text mode) If a Image file is of format .bmp then it will contain BM , at the beginning of the file. (when read in Text mode) I know that Image formats contain text (data) of certain size (bytes) in the beginning of the file, which is used as metadata of the Image file? My Questions are:- Is this behavior same in all image file formats (or formats in general)? Could a image file ( of no extension ) be recognized just using this data? Is there information available on how this metadata is

I'm attempting to reverse engineer an existing Oracle schema into some declarative SQLAlchemy models. My problem is that when I use MetaData.reflect , it doesn't find the tables in my schema, just a Global Temp Table. However, I can still query against the other tables. I'm using SQLAlchemy 0.7.8, CentOS 6.2 x86_64, python 2.6, cx_Oracle 5.1.2 and Oracle 11.2.0.2 Express Edition. Here's a quick sample of what I'm talking about: >>> import sqlalchemy >>> engine = sqlalchemy.create_engine('oracle+cx_oracle://user:pass@localhost/xe') >>> md = sqlalchemy.MetaData(bind=engine) >>> md.reflect() >>>

Is it possible in a generic way (for all image types) to be able to read and write metadata in Java, i've found a few examples but they are always specific, for JPEG or PNG for example. I need something generic enough to not if else statement everywhere. I don't want to rewrite the source but here is an great example http://johnbokma.com/java/obtaining-image-metadata.html Look at the readandDisplayMetaData function and it will give you an idea. Every file format has a different way of storing metadata. Asking for a generic way to read and write metadata is like asking for a generic way to read

In my previous developer life, clearcase was the tool, during 10+ years, for version control. Now the organisation I work for have moved over to git since 4 years. In clearcase there are easy accessible metadata constructions such as attributes on all levels of items such as repositories OR branches OR labels. git notes exists, but after some web surfing I have not come across any clear good way of doing this efficiently and why. For example UCM ClearCase baseline promotion level is a good concept that I wish would be as simple in git. The development community stats I represent for this

Currently i'm using MKVToolNix for my needs which is fine but i would prefer some CLI also. As far as i know ffmpeg supports chapters management. The ffmetadata format allows you to add chapters to a file. Have a look at https://ffmpeg.org/ffmpeg-formats.html#Metadata-1 for an example. cippu_lux Sorry maybe I'm not clear, and editing the answer I have messed up worst. I'm not English. Like Alex Zubkov I want add chapters to video with ffmpeg via cmd. The instruction in the page linked by MRousse don help me at all, but help me to solve 1st problem: Problem file was not in UTF-8. Problem was

I'm getting the fabled Error: Cannot obtain Metadata from... message, particularly http://localhost:1640/Service1.svc I've scoured stackoverflow and Google and, so far, none of it has helped. I created a new product to dumb it down and it's still not working. So I am here asking for help. I'm trying to setup a WCF Service that uses JSON, which means I need to use webhttpbinding, in C#. When I use the WCF Test Client, I get the aforementioned metadata error. I'm using Visual Studio Express 2010 and the target framework. I've been at this for two days and cannot understand why or what is the