{ 
"avbr_accuracy",    
"Accuracy of the AVBR ratecontrol",    
OFFSET(qsv.avbr_accuracy),    
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, 
VE },                             \
{ 
"avbr_convergence", 
"Convergence of the AVBR ratecontrol", 
OFFSET(qsv.avbr_convergence), 
AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, 
VE },                             \
{ 
"preset", 
NULL, 
OFFSET(qsv.preset), 
AV_OPT_TYPE_INT, { .i64 = MFX_TARGETUSAGE_BALANCED }, MFX_TARGETUSAGE_BEST_QUALITY, MFX_TARGETUSAGE_BEST_SPEED,   
VE, 
"preset" }, \
{ 
"veryfast",    
NULL, 0, 
AV_OPT_TYPE_CONST, { .i64 = MFX_TARGETUSAGE_BEST_SPEED  },   INT_MIN, INT_MAX, 
VE, 
"preset" },                                                \
{ 
"veryslow",    
NULL, 0, 
AV_OPT_TYPE_CONST, { .i64 = MFX_TARGETUSAGE_BEST_QUALITY  }, INT_MIN, INT_MAX, 
VE, 
"preset" },                                                \
{ 
"max_frame_size", 
"Maximum encoded frame size in bytes",    
OFFSET(qsv.max_frame_size), 
AV_OPT_TYPE_INT, { .i64 = -1 }, -1, UINT16_MAX, 
VE },                         \
{ 
"max_slice_size", 
"Maximum encoded slice size in bytes",    
OFFSET(qsv.max_slice_size), 
AV_OPT_TYPE_INT, { .i64 = -1 }, -1, UINT16_MAX, 
VE },                         \
{ 
"bitrate_limit",  
"Toggle bitrate limitations",             
OFFSET(qsv.bitrate_limit),  
AV_OPT_TYPE_INT, { .i64 = -1 }, -1,          1, 
VE },                         \
{ 
"adaptive_i",     
"Adaptive I-frame placement",             
OFFSET(qsv.adaptive_i),     
AV_OPT_TYPE_INT, { .i64 = -1 }, -1,          1, 
VE },                         \
{ 
"adaptive_b",     
"Adaptive B-frame placement",             
OFFSET(qsv.adaptive_b),     
AV_OPT_TYPE_INT, { .i64 = -1 }, -1,          1, 
VE },                         \
{ 
"b_strategy",     
"Strategy to choose between I/P/B-frames", 
OFFSET(qsv.b_strategy),    
AV_OPT_TYPE_INT, { .i64 = -1 }, -1,          1, 
VE },                         \
{ 
"low_power", 
"enable low power mode(experimental: many limitations by mfx version, BRC modes, etc.)", 
OFFSET(qsv.low_power), 
AV_OPT_TYPE_BOOL, { .i64 = 0}, 0, 1, 
VE},\