Defined in avcodec.h
#define CODEC_FLAG_QSCALE 0x0002 ///< Use fixed qscale. #define CODEC_FLAG_4MV 0x0004 ///< 4 MV per MB allowed / advanced prediction for H.263. #define CODEC_FLAG_QPEL 0x0010 ///< Use qpel MC. #define CODEC_FLAG_GMC 0x0020 ///< Use GMC. #define CODEC_FLAG_MV0 0x0040 ///< Always try a MB with MV=<0,0>. #define CODEC_FLAG_PART 0x0080 ///< Use data partitioning. /** * The parent program guarantees that the input for B-frames containing * streams is not written to for at least s->max_b_frames+1 frames, if * this is not set the input will be copied. */ #define CODEC_FLAG_INPUT_PRESERVED 0x0100 #define CODEC_FLAG_PASS1 0x0200 ///< Use internal 2pass ratecontrol in first pass mode. #define CODEC_FLAG_PASS2 0x0400 ///< Use internal 2pass ratecontrol in second pass mode. #define CODEC_FLAG_EXTERN_HUFF 0x1000 ///< Use external Huffman table (for MJPEG). #define CODEC_FLAG_GRAY 0x2000 ///< Only decode/encode grayscale. #define CODEC_FLAG_EMU_EDGE 0x4000 ///< Don't draw edges. #define CODEC_FLAG_PSNR 0x8000 ///< error[?] variables will be set during encoding. #define CODEC_FLAG_TRUNCATED 0x00010000 /** Input bitstream might be truncated at a random location instead of only at frame boundaries. */ #define CODEC_FLAG_NORMALIZE_AQP 0x00020000 ///< Normalize adaptive quantization. #define CODEC_FLAG_INTERLACED_DCT 0x00040000 ///< Use interlaced DCT. #define CODEC_FLAG_LOW_DELAY 0x00080000 ///< Force low delay. #define CODEC_FLAG_ALT_SCAN 0x00100000 ///< Use alternate scan. #define CODEC_FLAG_TRELLIS_QUANT 0x00200000 ///< Use trellis quantization. #define CODEC_FLAG_GLOBAL_HEADER 0x00400000 ///< Place global headers in extradata instead of every keyframe. #define CODEC_FLAG_BITEXACT 0x00800000 ///< Use only bitexact stuff (except (I)DCT). /* Fx : Flag for h263+ extra options */ #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0) #define CODEC_FLAG_H263P_AIC 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction (remove this) #endif #define CODEC_FLAG_AC_PRED 0x01000000 ///< H.263 advanced intra coding / MPEG-4 AC prediction #define CODEC_FLAG_H263P_UMV 0x02000000 ///< unlimited motion vector #define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp. #define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon. #define CODEC_FLAG_H263P_AIV 0x00000008 ///< H.263 alternative inter VLC #define CODEC_FLAG_OBMC 0x00000001 ///< OBMC #define CODEC_FLAG_LOOP_FILTER 0x00000800 ///< loop filter #define CODEC_FLAG_H263P_SLICE_STRUCT 0x10000000 #define CODEC_FLAG_INTERLACED_ME 0x20000000 ///< interlaced motion estimation #define CODEC_FLAG_SVCD_SCAN_OFFSET 0x40000000 ///< Will reserve space for SVCD scan offset user data. #define CODEC_FLAG_CLOSED_GOP ((int)0x80000000) #define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks. #define CODEC_FLAG2_STRICT_GOP 0x00000002 ///< Strictly enforce GOP size. #define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding. #define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata. #define CODEC_FLAG2_BPYRAMID 0x00000010 ///< H.264 allow B-frames to be used as references. #define CODEC_FLAG2_WPRED 0x00000020 ///< H.264 weighted biprediction for B-frames #define CODEC_FLAG2_MIXED_REFS 0x00000040 ///< H.264 one reference per partition, as opposed to one reference per macroblock #define CODEC_FLAG2_8X8DCT 0x00000080 ///< H.264 high profile 8x8 transform #define CODEC_FLAG2_FASTPSKIP 0x00000100 ///< H.264 fast pskip #define CODEC_FLAG2_AUD 0x00000200 ///< H.264 access unit delimiters #define CODEC_FLAG2_BRDO 0x00000400 ///< B-frame rate-distortion optimization #define CODEC_FLAG2_INTRA_VLC 0x00000800 ///< Use MPEG-2 intra VLC table. #define CODEC_FLAG2_MEMC_ONLY 0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC). #define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format. #define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping #define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries. #define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer.