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I'm trying to create a C# application which allows me to extract just the audio from YouTube videos. I've come across sites that already do that, but I'm not sure how they actually work. What would be the best way to do this programmatically?
Thanks for any advice
Writing an application for this might be overkill. Existing tools already do a pretty good job, and it's hard to beat their simplicity:
wget http://www.youtube.com/get_video.php?video_id=... |
ffmpeg -i - audio.mp3
All done!
If your application needs to do something special with the audio afterwards, it would make sense to write an app for that part. But for just getting the audio out, shelling out to ffmpeg will be a lot easier.
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I am trying to make an economy bot for discord using C#. I am confused about how I am going to do it. I might have to use databases but in that case how do I make it so it makes a new line for every user that has used the command. Any help would be nice, thanks.
You need to use a database. If this is your first time using databases, I highly recommened SQLite. You should also see video tutorials such as this one.
Once you have familiarised yourself with a SQLite databases then you will be able to answer your own question extremely easily. It is not difficult and requires some very simple logic. Attempt it yourself first and if you are still stuck reply to this answer.
Consider viewing this W3Schools resource when you are comfortable with the basics.
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My adviser told me to use Accord Framework for C# to extract features and patterns from images. Our project is about image analysis and comparison of tobacco leaves. Does anyone here have an idea on how to do it? Thank you.
This is pretty high level stuff, but from what I've learned in my time faffing with it, I'd use the Accord.Imaging library to scan your pictures. Followed by using the Accord.Neuro namespace to "learn" from some manual data you feed into it.
Seems your goal is to create a program that scans images quickly, gleaning only the useful data from the full image, and then checking for some particular features of the image. I've never used the library, but it looks like it'd be possible to use it.
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I have a requirement wherein I need to check if the hard disk isn't RAID before turning on a feature that encrypts the hard disk. Is there a built-in class in C# that would let me find this? I looked at the MSDN-DriveInfo class and it does not seem to have that information.
Not sure if you can check if a hard drive is RAID, I am pretty sure you can't because the hard drive just looks like one physical drive, but I would look into Windows Management Instrumentation (WMI), the .NET libraries are System.Management and System.Management.Instrumentation, here is an article that demos usage:
http://www.codeguru.com/columns/vb/getting-hard-disk-information-with-wmi-and-visual-studio-2012.htm
If you are using WMI, you can test BusType of MSFT_Disk. I am not sure how reliable it is though.
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I am learning C# and I want to create a countdown timer application that displays the time in a digital format on an image of a stopwatch and gives verbal time updates at certain times.
How do I go about displaying images to the screen and playing sound? I have used pygame in python to achieve this so basically I am looking for suggestions for something similar in C#.
I hope this makes sense! Thanks.
The best technology to use for that would probably be Windows Presentation Foundation (WPF).
Here's an example of an application made in WPF similar to what you want to do:
http://www.codeproject.com/Articles/20048/Immerse-Yourself-in-WPF-A-quot-World-Clocks-quot-A
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I want to write a video encoding. What do I need to do?
Use ffmpeg, then just call the executable from your code.
Do you mean implement / invent a codec, or do you mean encode a video?
For encoding a video, use libavcodec from ffmpeg.
For implementing or developing a new codec, this is typically done over a series of years by a team of experts, and if you have to ask this general a question it may be a learning experience but would most likely be a waste of your time.
Use OpenCV. it has an easy to use wrapper around one of the native API's in windows for doing this and also around ffmpeg.