If you do not make any changes in the range then probably you only experience exaggerated contrast. So setting srcRange = 1įorces the libav to use extended input data range.

The YUVJ is extended one and all YUV are 0. What is it about the ranges? The YUV pixel format has values in ranges: Y 16.235, UV 16.240.

Sws_setColorspaceDetails(swsCtx, coefs, srcRange, coefs, dstRange, SrcRange = 1 // this marks that values are according to yuvj Sws_getColorspaceDetails(swsCtx, (int**)&dummy, &srcRange, (int**)&dummy, &dstRange, &brightness, &contrast, &saturation) Ĭonst int* coefs = sws_getCoefficients(SWS_CS_DEFAULT) change the range of input data by first reading the current color space and then setting it's range as yuvj. SwsContext *swsCtx = sws_getContext(pCodecCtx->width, pCodecCtx->height, pixFormat, pCodecCtx->width, pCodecCtx->height, AV_PIX_FMT_RGB24, SWS_BILINEAR, NULL, NULL, NULL) initialize SWS context for software scaling

I am extending the Thomas Ayoub's answer: AVCodecContext* pCodecCtx = _videoStream->codec It is long time since the question was asked, but as I hit the same problem then I looked at it and tried to find also the answer to the second part (How to set the color range correctly?). Here is my ffmpeg output for version information: ffmpeg version 2.2 Copyright (c) 2000-2014 the FFmpeg developersīuilt on 15:29:01 with Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)Ĭonfiguration: -prefix=/usr/local/Cellar/ffmpeg/2.2 -enable-shared -enable-pthreads -enable-gpl -enable-version3 -enable-nonfree -enable-hardcoded-tables -enable-avresample -enable-vda -cc=clang -host-cflags= -host-ldflags= -enable-libx264 -enable-libfaac -enable-libmp3lame -enable-libxvidĪny idea to disable this warning? How to set the color range correctly? I want to perform a color space conversion of my video frame before converting it to an opengl texture with the following code: struct SwsContext * pSwsCtx = sws_getCachedContext(NULL,width, height, codec->pix_fmt, width, height, AV_PIX_FMT_RGBA, SWS_POINT, NULL, NULL, NULL) Įach time the sws_getCachedContext() function is called I got the following warning: deprecated pixel format used, make sure you did set range correctly

Ffmpeg gif deprecated pixel format used