Some Random Stuff

In one of the blog posts we learned how to decode jpeg images using libavcodec. This is the second part of that post. In this we will learn how to encode decoded images (raw images) to theora and write them in ogg video file. In the end of the first part we saved our raw image in raw_data variable and its length in raw_data_size variable. Lets assume that we packaged all our decoding code in one function called "decode_jpeg_image" which has following signature int decode_jpeg_image(char *filename,int file_name_size,uint8_t *raw_data,int *raw_data_size) filename = name of jpeg file to decode file_name_size = length of jpeg file's name raw_data = contains decoded raw image on return raw_data_size = contains length of raw_data on return Now let's start working on how to encode this image in raw_data to theora and write that image to ogg video file. Finding Theora encoder We first have to find encoder for THEORA which is represented by AVCodec structure. He