libavformat

I am trying to convert RGB frames to YUV420P format in ffmpeg/libav. Following is the code for conversion and also the images before and after conversion. The converted image loses all color information and also the scale changes significantly. Does anybody have idea how to handle this? I am completely new to ffmpeg/libav! // Did we get a video frame? if(frameFinished) { i++; sws_scale(img_convert_ctx, (const uint8_t * const *)pFrame->data, pFrame->linesize, 0, pCodecCtx->height, pFrameRGB->data, pFrameRGB->linesize); //============================================================== AVFrame

I'm trying to record RTSP stream from Axis camera with FFmpeg libavformat. I can grab video from files and then save it to another file, this is OK. But camera sends strange data, FPS is 100 and camera sends every 4th frame so result FPS is about 25. But libavformat set packets dts/pts for 90000 fps (default?) and new file stream has 100fps. Result is one hour video with only 100 frames. Here is my code #include <stdio.h> #include <stdlib.h> #include <libavcodec/avcodec.h> #include <libavformat/avformat.h> #include <libavformat/avio.h> int main(int argc, char** argv) { AVFormatContext* context

I'm currently trying to read small video files sent from a server In order to read a file using libavformat, you are supposed to call av_open_input_file(&avFormatContext, "C:\\path\\to\\video.avi", 0, 0, 0); The problem is that in this case the file is not on the disk, but in memory. What I'm doing for the moment is downloading the file, writing it on the disk using a temporary name, and then calling av_open_input_file with the temporary file name, which is not a very clean solution. In fact what I want is a function like av_open_custom(&avFormatContext, &myReadFunction, &mySeekFunction); but

I would really appreciate some help with the following issue: I have a gadget with a camera, producing H264 compressed video frames, these frames are being sent to my application. These frames are not in a container, just raw data. I want to use ffmpeg and libav functions to create a video file, which can be used later. If I decode the frames, then encode them, everything works fine, I get a valid video file. (the decode/encode steps are the usual libav commands, nothing fancy here, I took them from the almighty internet, they are rock solid)... However, I waste a lot of time by decoding and