yuv

Preambule: This may sound like a very specific question, but this is actually a go / no go to build an API 16+ Android application using MediaCodec that is compatible with most phone. I have an application with a h.264 MediaCodec that receives data from a buffer - and not a surface since I'm doing a lot of manipulations on the image. When creating the Encoder , I iterate through the list of possible encoders from the phone to make sure I'm using a proprietary encoder if any. This part is not a problem. The problem is that each encoder has its color format preference. This may lead to color

I have yuv sequences and I want to convert them to bmp images. I want to save it to a folder on my computer. I used the yuv2bmp m file in this link . Although the Yuv file is only 44MB, Matlab threw a memory error. How can I overcome this problem? Could you help me please? Best Regards... As this question doesn't have a fast answer I put here some links that may be helpful to you. But all of then refers more to implementation in C, not Matlab. Converting Between YUV and RGB Some sample code in C That one in Delphi is pretty good . This web site indeed is very nice web site for those that like

I am currently trying to develop a video player on Android, but am struggling with color formats. Context: I extract and decode a video through the standard combinaison of MediaExtractor/MediaCodec . Because I need the extracted frames to be available as OpenGLES textures (RGB) , I setup my decoder ( MediaCodec ) so that it feeds an external GLES texture ( GL_TEXTURE_EXTERNAL_OES ) through a SurfaceTexture. I know the data output by my HW decoder is in the NV12 ( YUV420SemiPlanar ) format, and I need to convert it to RGB by rendering it (with a fragment shader doing the conversion). MediaCodec

I am looking for sample GLSL fragment shader code that can convert RGB frame (say pixel format as ARGB) to YUV (say YUV420). Imagine an RGB frame of size 1920x1080. I like to use fragment shader to convert it to YUV frame. Can you point me to code that can be compiled and run on UBuntu box? miguelao For future reference, a bunch of colorspace conversions in GLSL shaders can be found in Gstreamer gst-plugins-gl codebase :) user1118321 First, you should know that your question is poorly phrased. Nobody is going to write you sample code. You can use a search engine (or even search this site) for

Does anyone know how to create a texture with a YUV colorspace so that we can get hardware based YUV to RGB colorspace conversion without having to use a fragment shader? I'm using an NVidia 9400 and I don't see an obvious GL extension that seems to do the trick. I've found examples how to use a fragment shader, but the project I'm working on currently only supports OpenGL 1.1 and I don't have time to convert it to 2.0 and perform all the regression testing necessary. This is also targeting Linux. On other platforms I've been using a MESA extension but it doesn't function on the Nvidia card.

I want to know how to adjust image saturation in YUV color space, specially, the U component and the V component? you probably want to scale the U and V components (using a center point of 128) ex: U = (U - 128) * Scale_factor) + 128; V = (V - 128) * Scale_factor) + 128; (and remember to clamp the values back to a valid range) 来源： https://stackoverflow.com/questions/8427786/how-to-adjust-image-saturation-in-yuv-color-space

I configured my code in order to get a stream of YUV_420_888 frames from my device's camera using an imageReader object and the rest of the well known camera2 API. Now I need to transform these frames to NV21 pixel format and call a native function which expect a frame in this format to perform certain computations. This is the code I am using inside the imagereader callback to rearrange the bytes of the frame: ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() { @Override public void onImageAvailable(ImageReader mReader) { Image image = null;