// Get preview context
context = sws_getContext(job->width, job->height, PIX_FMT_YUV420P,
job->width, job->height, PIX_FMT_RGBA32,
// Get preview context
context = sws_getContext(job->width, job->height, PIX_FMT_YUV420P,
job->width, job->height, PIX_FMT_RGBA32,