avpicture_get_size() can be used to compute the required size for
the buffer to fill.
@param src source picture with filled data
@param pix_fmt picture pixel format
@param width picture width
@param height picture height
@param dest destination buffer
@param dest_size destination buffer size in bytes
@return the number of bytes written to dest, or a negative value
(error code) on error, for example if the destination buffer is not
big enough
Copy pixel data from an AVPicture into a buffer.
avpicture_get_size() can be used to compute the required size for the buffer to fill.
@param src source picture with filled data @param pix_fmt picture pixel format @param width picture width @param height picture height @param dest destination buffer @param dest_size destination buffer size in bytes @return the number of bytes written to dest, or a negative value (error code) on error, for example if the destination buffer is not big enough
@see av_image_copy_to_buffer()