Extracting mp3 audio file from youtube video in C# - c#

I am building a program(in C#) and I need to download the audio from a youtube video(using the URL). I found two libraries which allow me to do it:
YotubeExtractor and libvideo(Also known as VideoLibrary), but I don't know how to use them, I mean I tried using their documentation but non of them worked.
Do you know another way which I can download or maybe explain me how to do this?
Thank you and have a nice day!

Don't use other people's code unless it's large and popular or your only option, I recommend, so that you both learn more and know how it works, as well as know how to maintain it if it breaks.
Retrieve the page using standard .NET functionality, parse out the HTML to find the video URL, download it using the same standard functionality, and then convert it to MP3 as a separate logical unit of your software.
For converting to MP3 you may well want to use someone else's library or call an external program like FFMPEG since that's not as trivial as parsing a webpage.

Related

Video editing without media library

Is there a way to edit videos using c# without using a media library eg. Microsoft Expression Encoder etc.
Just need to be able to cut out unwanted parts or insert other videos into a specified time of the original video.
Can I edit the raw video file by perhaps converting it into a binary file and then cutting/pasting the code?
Most video formats have a container and a codec--that might be a good place to start
http://www.pitivi.org/manual/codecscontainers.html
If one were interested in implementing a program modifying video sans libraries a good place to start might be looking at the existing open source video libraries(eg FFMPEG https://www.ffmpeg.org/download.html ) as a reference
No there is no way to edit a video without using anything that would be considered a "library". You either must write your "library" or use a existing 3rd party one.
The only thing that could possibly not be thought of as a "library" is a full external tool that does what you want and your code would just be a front end GUI for it. For example writing a GUI front end for FFmpeg.

Opening Sound Files In .Net

need a bit of help here. Does anyone know how to open files such as PCM, PRF, PAD, KMP, STY, and PCG in .Net? It doesn't matter if it is included in .Net or if it is from a third-party library. I need to be able to view their content, edit them, and convert them from one format to another.
Thanks.
nAudio is going to be the library of choice here. It's the easiest one to work with on the market that I've found. Further, we have an application in production today serving 14K+ users with that library, so it's production ready.
Alvas.Audio allows to convert many types of audio files with help DirectShow filters. There are many examples of the use of the library.

how to write dll file to access pdf

Hi i'm new programming and i have written few application to access pdf content by using some dll files, but now my question is how can we write our own dll to access the pdf files. I know it's a big process but i'm very much interested to learn about this. any one please help me.
You can start by reading the PDF specification (warning 32MB behind this link) in order to understand how the PDF file format is implemented. This is necessary if you want to be able to parse it and extract the information you are interested in.
In the meantime (as this reading might occupy you during a certain amount of time) if you have pressing project deadlines you probably want to use an existing library such as iTextSharp.
I know it's a big process but i'm very much interested to learn about this.
That's true. I'd like to suggest to study some open source APIs (iTextSharp) and PDF SDK.

How to use the Bass library to convert audio to another format (using C#)

Good day everyone and happy holidays.
I'm trying to create a "simple" program that allows me to create a list of video files (Youtube video's to be precise) that are then run through by my program and converted any given format to pure MP3 audio. For this purpose I'm trying to use the BASS.dll and well it isn't going so well.
I was wondering if anyone has used BASS to convert from one audio format to another?
Or is there another library better suited for this?
If I understand correctly then the input files are YouTube videos which are FLV or F4V (MP4). Does BASS even support those formats?
Depending on your requirements, the easiest way might be to use Process.Start with ffmpeg to perform the extraction/conversion. Windows builds here: http://sourceforge.net/projects/mplayer-win32/files/FFmpeg/

how to convert sequence of jpeg image into video format?

hi
I am developing a video capture application using C#.net. i captured
video through webcam and saved it as a JPEG images then i want to make a
wmv file with those images. how can i do that what are the basic steps needed for that can any body help
I am working on this myself. I have found two ways that may be possible - both require the purchase of an outside library.
The first one looks to be the easiest but costs the most, although it will allow you to use it for free you will just have to deal with a pop up telling you to purchase the library: http://bytescout.com/products/developer/imagetovideosdk/imagetovideosdk_convert_jpg_to_video.html
The other involves using Microsoft Encoder 4. I am still working on this one. You can get the free version here: http://www.microsoft.com/download/en/details.aspx?id=18974
C# doesn't natively support much in the way of sound or video so outside reference assemblies seem to be a necessity.
Right now that is the best help I can offer until I figure it out.

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