Save Texture2D to disk

Hi!
I want to save a Texture2D to disk, but the convertToPNG and the convertToJPG functions are too time consuming for my application. I would like to save the Texture2D as a BMP file. How can I convert a Texture2D to a BMP? I found one forum post where someone did it with System.Drawing.BMP but how can I use System.Drawing in Unity. I tried to put the System.Drawing dll into Unity but that throws an error message.

Further I want to ask if anyone knows a good libary to convert images to a video inside Unity.
What I would like to do in the longterm is the following:
- choose a framerate
- every frame: render the animation frame accordant to the framerate
- in postrender: savepixels to texture2d
- in the end: create video from the textures with a choosen sound sample.

And all of this should be faster than realtime. For example I want to render a video to disk in about 2 seconds if the animation and sound is 1 minute long. That would be the ideal case.

Best,
Elisabeth

 

I would look for some of these recorders,
https://www.assetstore.unity3d.com/en/#!/content/9154
https://www.assetstore.unity3d.com/en/#!/search/video recorder

 

Hi! Thanks for the answer But I would like to write it on my own to also understand it a little bit more. I have already the texture2Ds for each frame and I can also save them as JPG on the disk, but I would like to know first how I can save them as BMP and then I would like to take FFMPEG or another program to make a video out of it. My problem is that I want to render it out more than realtime and the sound is seperate and not running in my editor. Therefore I don't know if these plugins can attach a sound file in the end and if you can tell the program to record just with 25 frames when I want to have a framerate of about 500 whereas one second of animation will be rendered in 25 frames. Do you know what I mean?
Let's say I have an animation with 4 seconds. Then Unity shows it with the maximal possible framerate in 4 seconds, but I want to render the video out so that I make 4 * 25 = 100 images and render them in less than a second.

Is there any possiblity to convert a Texture2D to a BMP?
And second is there any Unity implementation of FFMPEG?
Or is there a better way to do it?
Best regards,
Elisabeth