FFMPEG An Intermediate Guide/AVCodecContext AVOptions

-bEdit

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.

-abEdit

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.

-btEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer (in bits/s)
Codecs: all
Web sites:
Description: set videos o bitrate tolerance
your bitrate x 10 = bt
def - 4M

-gEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set the group of picture size

-cutoffEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set cutoff bandwidth

-frame_sizeEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-qcompEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: video quantizer scale compression (VBR)

-qblurEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: video quantizer scale blur (VBR)

-qminEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: min video quantizer scale (VBR)

-qmaxEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: max video quantizer scale (VBR)

-qdiffEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: max difference between the quantizer scale (VBR)

-bfEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: use 'frames' B frames

-b_qfactorEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: qp factor between p and b frames

-rc_strategyEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: ratecontrol method

-b_strategyEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: strategy to choose between I/P/B-frames

-hurry_upEdit

FFMPEG: Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-psEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: rtp payload size in bytes

-luma_elim_thresholdEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: single coefficient elimination threshold for luminance (negative values also consider dc coefficient)

-chroma_elim_thresholdEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)

-b_qoffsetEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: qp offset between P and B frames

-mpeg_quantEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: use MPEG quantizers instead of H.263

-qsquishEdit

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)

-rc_qmod_ampEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: experimental quantizer modulation

-rc_qmod_freqEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: experimental quantizer modulation

-rc_eqEdit

FFMPEG: Encode, Video
Full Name:
Variables: String
Codecs: all
Web sites:
Description: set rate control equation

-maxrateEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set max video bitrate tolerance (in bits/s)

-minrateEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set min video bitrate tolerance (in bits/s)

-bufsizeEdit

FFMPEG: Encode, Video, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set ratecontrol buffer size (in bits)

-rc_buf_aggressivityEdit

FFMPEG: Encode, Video
Full Name:
Variables:
Codecs: allFloat
Web sites:
Description: currently useless

-i_qfactorEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: qp factor between P and I frames

-i_qoffsetEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: qp offset between P and I frames

-rc_init_cplxEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: initial complexity for 1-pass encoding
recommended value - 100

-lumi_maskEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: compresses bright areas stronger than medium ones

-tcplx_maskEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: temporal complexity masking

-scplx_maskEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: spatial complexity masking

-p_maskEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: inter masking

-dark_maskEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: compresses dark areas stronger than medium ones

-aspectEdit

FFMPEG: Encode, Video
Full Name:
Variables: Rational
Codecs: all
Web sites:
Description: sample aspect ratio

-mb_qminEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: obsolete, use qmin

-mb_qmaxEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: obsolete, use qmax

-dia_sizeEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: diamond type & size for motion estimation

-last_predEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: amount of motion predictors from the previous frame

-premeEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: pre motion estimation

-precmpEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: pre motion estimation compare function

-pre_dia_sizeEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: diamond type & size for motion estimation pre-pass

-subqEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: sub pel motion estimation quality

-me_rangeEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: limit motion vectors range (1023 for DivX player)

-ibiasEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: intra quant bias

-pbiasEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: inter quant bias

-contextEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: context model

-sc_thresholdEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: scene change threshold

-lminEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: min lagrange factor (VBR)

-lmaxEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: max lagrange factor (VBR)

-noise_reductionEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: noise reduction
recommended value - 250

-rc_init_occupancyEdit

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

-inter_thresholdEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-errorEdit

FFMPEG:
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: Encode, Video

-quantizer_noise_shapingEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: quantizer noise shaping

-threadsEdit

FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-mb_thresholdEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: macroblock threshold

-dcEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: intra_dc_precision

-nssewEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: nsse weight

-skip_topEdit

FFMPEG: Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: number of macroblock rows at the top which are skipped

-skip_bottomEdit

FFMPEG: Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: number of macroblock rows at the bottom which are skipped

-lowresEdit

FFMPEG: Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: decode at 1= 1/2, 2=1/4, 3=1/8 resolutions

-skip_thresholdEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: frame skip threshold

-skip_factorEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: frame skip factor

-skip_expEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: frame skip exponent

-border_maskEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: increases the quantizer for macroblocks close to borders

-mblminEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: min macroblock lagrange factor (VBR)

-mblmaxEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: max macroblock lagrange factor (VBR)

-mepcEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: motion estimation bitrate penalty compensation (1.0 = 256)

-bidir_refineEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: refine the two motion vectors used in bidirectional macroblocks

-brd_scaleEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: downscales frames for dynamic B-frame decision

-crfEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: x264
Web sites:
Description: enables constant quality mode, and selects the quality

-cqpEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: constant quantization parameter rate control method

-keyint_minEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: x264
Web sites:
Description: minimum interval between IDR-frames

-refsEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: Snow
Web sites:
Description: reference frames to consider for motion compensation

-chromaoffsetEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: chroma qp offset from luma

-bframebiasEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: influences how often B-frames are used

-trellisEdit

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)

-directpredEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: direct mv prediction mode - 0 (none), 1 (spatial), 2 (temporal), 3 (auto)

-complexityblurEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: reduce fluctuations in qp (before curve compression)

-deblockalphaEdit

FFMPEG: Integer
Full Name:
Variables: Encode, Video
Codecs: all
Web sites:
Description: in-loop deblocking filter alphac0 parameter

-deblockbetaEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: in-loop deblocking filter beta parameter

-sc_factorEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: multiplied by qscale for each frame and added to scene_change_score

-mv0_thresholdEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-b_sensitivityEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: adjusts sensitivity of b_frame_strategy 1

-compression_levelEdit

FFMPEG: Encode, Video, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-use_lpcEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: sets whether to use LPC mode (FLAC)

-lpc_coeff_precisionEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: LPC coefficient precision (FLAC)

-min_prediction_orderEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-max_prediction_orderEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-prediction_order_methodEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: search method for selecting prediction order

-min_partition_orderEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-max_partition_orderEdit

FFMPEG: Encode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-timecode_frame_startEdit

FFMPEG: Encode, Video
Full Name:
Variables: Integer 64bit
Codecs: all
Web sites:
Description: GOP timecode frame start number, in non drop frame format

-request_channelsEdit

FFMPEG: Decode, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: set desired number of audio channels

-drc_scaleEdit

FFMPEG: Decode, Audio
Full Name:
Variables: Float
Codecs: all
Web sites:
Description: percentage of dynamic range compression to apply

-channel_layoutEdit

FFMPEG: Encode, Decode, Audio
Full Name:
Variables: Integer 64bit
Codecs: all
Web sites:
Description:

-request_channel_layoutEdit

FFMPEG: Decode, Audio
Full Name:
Variables: Integer 64bit
Codecs: all
Web sites:
Description:

-rc_max_vbv_useEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description:

-rc_min_vbv_useEdit

FFMPEG: Encode, Video
Full Name:
Variables: Float
Codecs: all
Web sites:
Description:

-ticks_per_frameEdit

FFMPEG: Encode, Decode, Video, Audio
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-color_primariesEdit

FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-color_trcEdit

FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-colorspaceEdit

FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-color_rangeEdit

FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description:

-chroma_sample_locationEdit

FFMPEG: Encode, Decode, Video
Full Name:
Variables: Integer
Codecs: all
Web sites:
Description: