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Suggest pagesFFMPEG An Intermediate Guide/AVCodecContext AVOptions
[edit] -b
FFMPEG: Encode, Video
Full Name: Video Bitrate
Variables: integer (bits/s)
Codecs: all
Web sites:
Description: Used to set video bitrate, in bits per second.
[edit] -ab
FFMPEG: Encode, Audio
Full Name: Audio Bitrate
Variables: integer (bits/s)
Codecs: all
Web sites:
Description: Used to set audio bitrate, in bits per second.
[edit] -bt
FFMPEG: Encode, Video
Full Name:
Variables: Integer (in bits/s)
Codecs: all
Web sites:
Description: set video bitrate tolerance
[edit] -g
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set the group of picture size
[edit] -cutoff
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set cutoff bandwidth
[edit] -frame_size
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -qcomp
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: video quantizer scale compression (VBR)
[edit] -qblur
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: video quantizer scale blur (VBR)
[edit] -qmin
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: min video quantizer scale (VBR)
[edit] -qmax
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: max video quantizer scale (VBR)
[edit] -qdiff
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: max difference between the quantizer scale (VBR)
[edit] -bf
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: use 'frames' B frames
[edit] -b_qfactor
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: qp factor between p and b frames
[edit] -rc_strategy
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: ratecontrol method
[edit] -b_strategy
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: strategy to choose between I/P/B-frames
[edit] -hurry_up
FFMPEG: Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -ps
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: rtp payload size in bytes
[edit] -lelim
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: single coefficient elimination threshold for luminance (negative values also consider dc coefficient)
[edit] -celim
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)
[edit] -b_qoffset
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: qp offset between P and B frames
[edit] -mpeg_quant
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: use MPEG quantizers instead of H.263
[edit] -qsquish
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function)
[edit] -rc_qmod_amp
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: experimental quantizer modulation
[edit] -rc_qmod_freq
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: experimental quantizer modulation
[edit] -rc_eq
FFMPEG: Encode, Video
Full Name:
Variables: String
Codecs: all
Web sites:
Description: set rate control equation
[edit] -maxrate
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set max video bitrate tolerance (in bits/s)
[edit] -minrate
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set min video bitrate tolerance (in bits/s)
[edit] -bufsize
FFMPEG: Encode, Video, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set ratecontrol buffer size (in bits)
[edit] -rc_buf_aggressivity
FFMPEG: Encode, Video
Full Name:
Variables:
Codecs: allFloat
Web sites:
Description: currently useless
[edit] -i_qfactor
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: qp factor between P and I frames
[edit] -i_qoffset
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: qp offset between P and I frames
[edit] -rc_init_cplx
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: initial complexity for 1-pass encoding
[edit] -lumi_mask
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: compresses bright areas stronger than medium ones
[edit] -tcplx_mask
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: temporal complexity masking
[edit] -scplx_mask
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: spatial complexity masking
[edit] -p_mask
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: inter masking
[edit] -dark_mask
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: compresses dark areas stronger than medium ones
[edit] -aspect
FFMPEG: Encode, Video
Full Name:
Variables: Rational
Codecs: all
Web sites:
Description: sample aspect ratio
[edit] -mb_qmin
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: obsolete, use qmin
[edit] -mb_qmax
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: obsolete, use qmax
[edit] -dia_size
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: diamond type & size for motion estimation
[edit] -last_pred
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: amount of motion predictors from the previous frame
[edit] -preme
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: pre motion estimation
[edit] -precmp
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: pre motion estimation compare function
[edit] -pre_dia_size
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: diamond type & size for motion estimation pre-pass
[edit] -subq
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: sub pel motion estimation quality
[edit] -me_range
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: limit motion vectors range (1023 for DivX player)
[edit] -ibias
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: intra quant bias
[edit] -pbias
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: inter quant bias
[edit] -context
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: context model
[edit] -sc_threshold
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: scene change threshold
[edit] -lmin
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: min lagrange factor (VBR)
[edit] -lmax
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: max lagrange factor (VBR)
[edit] -nr
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: noise reduction
[edit] -rc_init_occupancy
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: number of bits which should be loaded into the rc buffer before decoding starts
[edit] -inter_threshold
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -error
FFMPEG:
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: Encode, Video
[edit] -qns
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: quantizer noise shaping
[edit] -threads
FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -mb_threshold
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: macroblock threshold
[edit] -dc
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: intra_dc_precision
[edit] -nssew
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: nsse weight
[edit] -skip_top
FFMPEG: Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: number of macroblock rows at the top which are skipped
[edit] -skip_bottom
FFMPEG: Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: number of macroblock rows at the bottom which are skipped
[edit] -lowres
FFMPEG: Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: decode at 1= 1/2, 2=1/4, 3=1/8 resolutions
[edit] -skip_threshold
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: frame skip threshold
[edit] -skip_factor
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: frame skip factor
[edit] -skip_exp
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: frame skip exponent
[edit] -border_mask
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: increases the quantizer for macroblocks close to borders
[edit] -mblmin
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: min macroblock lagrange factor (VBR)
[edit] -mblmax
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: max macroblock lagrange factor (VBR)
[edit] -mepc
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: motion estimation bitrate penalty compensation (1.0 = 256)
[edit] -bidir_refine
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: refine the two motion vectors used in bidirectional macroblocks
[edit] -brd_scale
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: downscales frames for dynamic B-frame decision
[edit] -crf
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: x264
Web sites:
Description: enables constant quality mode, and selects the quality
[edit] -cqp
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: constant quantization parameter rate control method
[edit] -keyint_min
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: x264
Web sites:
Description: minimum interval between IDR-frames
[edit] -refs
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: Snow
Web sites:
Description: reference frames to consider for motion compensation
[edit] -chromaoffset
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: chroma qp offset from luma
[edit] -bframebias
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: influences how often B-frames are used
[edit] -trellis
FFMPEG: Encode, Video, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: rate-distortion optimal quantization
- In lavc:
- trellis 0 = no trellis
- trellis 1 = trellis on final encode
- In x264:
-
- trellis 0 = no trellis
- trellis 1 = trellis on final encode
- trellis 2 = trellis on all RD calls (slow)
[edit] -directpred
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)
[edit] -complexityblur
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: reduce fluctuations in qp (before curve compression)
[edit] -deblockalpha
FFMPEG: Integer
Full Name:
Variables: Encode, Video
Codecs: all
Web sites:
Description: in-loop deblocking filter alphac0 parameter
[edit] -deblockbeta
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: in-loop deblocking filter beta parameter
[edit] -sc_factor
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: multiplied by qscale for each frame and added to scene_change_score
[edit] -mv0_threshold
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -b_sensitivity
FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: adjusts sensitivity of b_frame_strategy 1
[edit] -compression_level
FFMPEG: Encode, Video, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -use_lpc
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: sets whether to use LPC mode (FLAC)
[edit] -lpc_coeff_precision
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: LPC coefficient precision (FLAC)
[edit] -min_prediction_order
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -max_prediction_order
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -prediction_order_method
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: search method for selecting prediction order
[edit] -min_partition_order
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -max_partition_order
FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -timecode_frame_start
FFMPEG: Encode, Video
Full Name:
Variables: Integer 64bit
Codecs: all
Web sites:
Description: GOP timecode frame start number, in non drop frame format
[edit] -request_channels
FFMPEG: Decode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set desired number of audio channels
[edit] -drc_scale
FFMPEG: Decode, Audio
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: percentage of dynamic range compression to apply
[edit] -channel_layout
FFMPEG: Encode, Decode, Audio
Full Name:
Variables: Integer 64bit
Codecs: all
Web sites:
Description:
[edit] -request_channel_layout
FFMPEG: Decode, Audio
Full Name:
Variables: Integer 64bit
Codecs: all
Web sites:
Description:
[edit] -rc_max_vbv_use
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description:
[edit] -rc_min_vbv_use
FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description:
[edit] -ticks_per_frame
FFMPEG: Encode, Decode, Video, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -color_primaries
FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -color_trc
FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -colorspace
FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -color_range
FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
[edit] -chroma_sample_location
FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:
