Is there any c++ library to encode flv video? [closed] - c++

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Is there any c++ video library to convert videos to flv video?
I searched on google I found flvdev.com but it's not open source (it needs purchasing).
I also tried libavcodec, but flv codec doesn't work.
(Now I'm fetching frames from a video monitor, then use libavcodec to encode them to mpg and finally call "ffmpeg" command to convert them to flv)

You can try ffmpeg. It seems it supports the flv format:
https://github.com/FFmpeg/FFmpeg
http://www.ffmpeg.org/download.html
Here are some examples of how to use the compiled program, but being open source, you can integrate it into your work:
How can I achieve the best overall FLV quality with FFMPEG?
http://www.thornock.us/wordpress/archives/172

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How to decode ogg audio file to raw audio data? [closed]

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Closed 8 years ago.
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I have .ogg file and I want to decode it to raw audio data. I read documentation to libvorbis, but it's very brief and not clear. I don't understand it! What Should i use libvorbis or libogg? Or something else?
ogg is file format so using libogg you can demux file and then you will get vorbis audio you need to further decode that using libvorbis. and you will get raw audio.
Samples application for using those library are available on Internet.

Need library to open 3d video c++ [closed]

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i'd be interested in a c++ (if any) library to handle and elaborate 3d video files. I need to process the NifTI and Analyze format.
Thanks
You should use opencv for video processing. It is a very good library for processing video and you can also edit video. It provides a lot of inbuilt functions to process video.
To see an example click here.

Merging audio and video files into one [C++] [closed]

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My C++ application is using openframeworks to record video from webcam in .mov format, and a 3rd party application to record application sound to a separate .wav file.
In the end of the execution I need to merge both video and audio files into one. Is there any library or API that does this?
Would appreciate some help, thanks!
Similar to question here, the following are quoted from there:
Once you get a separate audio and video file, you can combine them using a technique called muxing. There are many many ways to do this. I use VirtualDub for most of my muxing needs, although it is windows only (not sure if that's a problem). I know ffmpeg is also capable of muxing (via the command line interface), I can't recall what the command is. There's also mplayer and a multitude of other programs out there to do this.
Edit: Two ways to use ffmpeg:
Use C/C++ API: check out the following great ffmpeg tutorials
https://github.com/chelyaev/ffmpeg-tutorial.
https://github.com/phamquy/FFmpeg-tutorial-samples
Use system calls:
check out here for script source code (commands) on how to merge audio and video files.

FLTK Exif data from an image [closed]

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Is there a fltk class/function that deals with extracting exif data from an image? Is there code or any commands? Ive searched all over the internet, and could find nothing.
No, there is no such class in FLTK, and probably there will never be. Dealing with Exif data should be in another library that deals with image formarts, not a GUI toolkit.
What I would do if I were you is this: Link my FLTK application with Magick++ (http://www.imagemagick.org/Magick++/) and use ImageMagick C++ API to manipulate Exif data.

Is there any C/C++ lib supporting reading/writing TIFF with 32-bit samples? [closed]

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I want to read and write TIFF(32-bit samples) in some Qt projects. I have tried libtiff, but they only support the TIFF images with BitsPerSample=1, 2, 4, 8, or 16.
When I used them to read TIFF with 32-bit samples, I got prompt "Sorry, can not handle images with 32-bit samples."
Is there any C/C++ lib supporting reading/writing TIFF with 32-bit samples?
Why dont you use QImage ?
It has
load() and
save()
operations. Also supports reading writing tiff.
Keep in mind your question is off topic.
But anyway FLTK is able to.
See http://www.fltk.org/index.php