void (*flush)(AVCodecContext *);
const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1
void (*flush)(AVCodecContext *);
const AVRational *supported_framerates; ///array of supported framerates, or NULL if any, array is terminated by {0,0}
const enum PixelFormat *pix_fmts; ///array of supported pixel formats, or NULL if unknown, array is terminanted by -1