h261 encoder AVOptions:

  -mpv_flags         <flags>      E..V...... Flags common for all mpegvideo-based encoders. (default 0)

     skip_rd                      E..V...... RD optimal MB level residual skipping

     strict_gop                   E..V...... Strictly enforce gop size

     qp_rd                        E..V...... Use rate distortion optimization for qp selection

     cbp_rd                       E..V...... use rate distortion optimization for CBP

     naq                          E..V...... normalize adaptive quantization

     mv0                          E..V...... always try a mb with mv=<0,0>

  -luma_elim_threshold <int>        E..V...... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)

  -chroma_elim_threshold <int>        E..V...... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)

  -quantizer_noise_shaping <int>        E..V...... (from 0 to INT_MAX) (default 0)

  -error_rate        <int>        E..V...... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)

  -qsquish           <float>      E..V...... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)

  -rc_qmod_amp       <float>      E..V...... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)

  -rc_qmod_freq      <int>        E..V...... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)

  -rc_eq             <string>     E..V...... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.

  -rc_init_cplx      <float>      E..V...... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)

  -rc_buf_aggressivity <float>      E..V...... currently useless (from -FLT_MAX to FLT_MAX) (default 1)

  -border_mask       <float>      E..V...... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)

  -lmin              <int>        E..V...... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)

  -lmax              <int>        E..V...... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)

  -ibias             <int>        E..V...... intra quant bias (from INT_MIN to INT_MAX) (default 999999)

  -pbias             <int>        E..V...... inter quant bias (from INT_MIN to INT_MAX) (default 999999)

  -rc_strategy       <int>        E..V...... ratecontrol method (from 0 to 1) (default ffmpeg)

     ffmpeg          0            E..V...... deprecated, does nothing

     xvid            0            E..V...... deprecated, does nothing

  -motion_est        <int>        E..V...... motion estimation algorithm (from 0 to 2) (default epzs)

     zero            0            E..V......

     epzs            1            E..V......

     xone            2            E..V......

  -force_duplicated_matrix <boolean>    E..V...... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)

  -b_strategy        <int>        E..V...... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)

  -b_sensitivity     <int>        E..V...... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)

  -brd_scale         <int>        E..V...... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)

  -skip_threshold    <int>        E..V...... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)

  -skip_factor       <int>        E..V...... Frame skip factor (from INT_MIN to INT_MAX) (default 0)

  -skip_exp          <int>        E..V...... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)

  -skip_cmp          <int>        E..V...... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)

     sad             0            E..V...... Sum of absolute differences, fast

     sse             1            E..V...... Sum of squared errors

     satd            2            E..V...... Sum of absolute Hadamard transformed differences

     dct             3            E..V...... Sum of absolute DCT transformed differences

     psnr            4            E..V...... Sum of squared quantization errors, low quality

     bit             5            E..V...... Number of bits needed for the block

     rd              6            E..V...... Rate distortion optimal, slow

     zero            7            E..V...... Zero

     vsad            8            E..V...... Sum of absolute vertical differences

     vsse            9            E..V...... Sum of squared vertical differences

     nsse            10           E..V...... Noise preserving sum of squared differences

     dct264          14           E..V......

     dctmax          13           E..V......

     chroma          256          E..V......

     msad            15           E..V...... Sum of absolute differences, median predicted

  -sc_threshold      <int>        E..V...... Scene change threshold (from INT_MIN to INT_MAX) (default 0)

  -noise_reduction   <int>        E..V...... Noise reduction (from INT_MIN to INT_MAX) (default 0)

  -mpeg_quant        <int>        E..V...... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)

  -ps                <int>        E..V...... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)

  -mepc              <int>        E..V...... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)

  -mepre             <int>        E..V...... pre motion estimation (from INT_MIN to INT_MAX) (default 0)

  -intra_penalty     <int>        E..V...... Penalty for intra blocks in block decision (from 0 to 1.07374e+09) (default 0)

  -a53cc             <boolean>    E..V...... Use A53 Closed Captions (if available) (default true)


H.263 encoder AVOptions:

  -obmc              <boolean>    E..V...... use overlapped block motion compensation. (default false)

  -mb_info           <int>        E..V...... emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size (from 0 to INT_MAX) (default 0)

  -mpv_flags         <flags>      E..V...... Flags common for all mpegvideo-based encoders. (default 0)

     skip_rd                      E..V...... RD optimal MB level residual skipping

     strict_gop                   E..V...... Strictly enforce gop size

     qp_rd                        E..V...... Use rate distortion optimization for qp selection

     cbp_rd                       E..V...... use rate distortion optimization for CBP

     naq                          E..V...... normalize adaptive quantization

     mv0                          E..V...... always try a mb with mv=<0,0>

  -luma_elim_threshold <int>        E..V...... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)

  -chroma_elim_threshold <int>        E..V...... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)

  -quantizer_noise_shaping <int>        E..V...... (from 0 to INT_MAX) (default 0)

  -error_rate        <int>        E..V...... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)

  -qsquish           <float>      E..V...... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)

  -rc_qmod_amp       <float>      E..V...... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)

  -rc_qmod_freq      <int>        E..V...... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)

  -rc_eq             <string>     E..V...... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.

  -rc_init_cplx      <float>      E..V...... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)

  -rc_buf_aggressivity <float>      E..V...... currently useless (from -FLT_MAX to FLT_MAX) (default 1)

  -border_mask       <float>      E..V...... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)

  -lmin              <int>        E..V...... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)

  -lmax              <int>        E..V...... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)

  -ibias             <int>        E..V...... intra quant bias (from INT_MIN to INT_MAX) (default 999999)

  -pbias             <int>        E..V...... inter quant bias (from INT_MIN to INT_MAX) (default 999999)

  -rc_strategy       <int>        E..V...... ratecontrol method (from 0 to 1) (default ffmpeg)

     ffmpeg          0            E..V...... deprecated, does nothing

     xvid            0            E..V...... deprecated, does nothing

  -motion_est        <int>        E..V...... motion estimation algorithm (from 0 to 2) (default epzs)

     zero            0            E..V......

     epzs            1            E..V......

     xone            2            E..V......

  -force_duplicated_matrix <boolean>    E..V...... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)

  -b_strategy        <int>        E..V...... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)

  -b_sensitivity     <int>        E..V...... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)

  -brd_scale         <int>        E..V...... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)

  -skip_threshold    <int>        E..V...... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)

  -skip_factor       <int>        E..V...... Frame skip factor (from INT_MIN to INT_MAX) (default 0)

  -skip_exp          <int>        E..V...... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)

  -skip_cmp          <int>        E..V...... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)

     sad             0            E..V...... Sum of absolute differences, fast

     sse             1            E..V...... Sum of squared errors

     satd            2            E..V...... Sum of absolute Hadamard transformed differences

     dct             3            E..V...... Sum of absolute DCT transformed differences

     psnr            4            E..V...... Sum of squared quantization errors, low quality

     bit             5            E..V...... Number of bits needed for the block

     rd              6            E..V...... Rate distortion optimal, slow

     zero            7            E..V...... Zero

     vsad            8            E..V...... Sum of absolute vertical differences

     vsse            9            E..V...... Sum of squared vertical differences

     nsse            10           E..V...... Noise preserving sum of squared differences

     dct264          14           E..V......

     dctmax          13           E..V......

     chroma          256          E..V......

     msad            15           E..V...... Sum of absolute differences, median predicted

  -sc_threshold      <int>        E..V...... Scene change threshold (from INT_MIN to INT_MAX) (default 0)

  -noise_reduction   <int>        E..V...... Noise reduction (from INT_MIN to INT_MAX) (default 0)

  -mpeg_quant        <int>        E..V...... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)

  -ps                <int>        E..V...... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)

  -mepc              <int>        E..V...... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)

  -mepre             <int>        E..V...... pre motion estimation (from INT_MIN to INT_MAX) (default 0)

  -intra_penalty     <int>        E..V...... Penalty for intra blocks in block decision (from 0 to 1.07374e+09) (default 0)

  -a53cc             <boolean>    E..V...... Use A53 Closed Captions (if available) (default true)


H.263p encoder AVOptions:

  -umv               <boolean>    E..V...... Use unlimited motion vectors. (default false)

  -aiv               <boolean>    E..V...... Use alternative inter VLC. (default false)

  -obmc              <boolean>    E..V...... use overlapped block motion compensation. (default false)

  -structured_slices <boolean>    E..V...... Write slice start position at every GOB header instead of just GOB number. (default false)

  -mpv_flags         <flags>      E..V...... Flags common for all mpegvideo-based encoders. (default 0)

     skip_rd                      E..V...... RD optimal MB level residual skipping

     strict_gop                   E..V...... Strictly enforce gop size

     qp_rd                        E..V...... Use rate distortion optimization for qp selection

     cbp_rd                       E..V...... use rate distortion optimization for CBP

     naq                          E..V...... normalize adaptive quantization

     mv0                          E..V...... always try a mb with mv=<0,0>

  -luma_elim_threshold <int>        E..V...... single coefficient elimination threshold for luminance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)

  -chroma_elim_threshold <int>        E..V...... single coefficient elimination threshold for chrominance (negative values also consider dc coefficient) (from INT_MIN to INT_MAX) (default 0)

  -quantizer_noise_shaping <int>        E..V...... (from 0 to INT_MAX) (default 0)

  -error_rate        <int>        E..V...... Simulate errors in the bitstream to test error concealment. (from 0 to INT_MAX) (default 0)

  -qsquish           <float>      E..V...... how to keep quantizer between qmin and qmax (0 = clip, 1 = use differentiable function) (from 0 to 99) (default 0)

  -rc_qmod_amp       <float>      E..V...... experimental quantizer modulation (from -FLT_MAX to FLT_MAX) (default 0)

  -rc_qmod_freq      <int>        E..V...... experimental quantizer modulation (from INT_MIN to INT_MAX) (default 0)

  -rc_eq             <string>     E..V...... Set rate control equation. When computing the expression, besides the standard functions defined in the section 'Expression Evaluation', the following functions are available: bits2qp(bits), qp2bits(qp). Also the following constants are available: iTex pTex tex mv fCode iCount mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex avgTex.

  -rc_init_cplx      <float>      E..V...... initial complexity for 1-pass encoding (from -FLT_MAX to FLT_MAX) (default 0)

  -rc_buf_aggressivity <float>      E..V...... currently useless (from -FLT_MAX to FLT_MAX) (default 1)

  -border_mask       <float>      E..V...... increase the quantizer for macroblocks close to borders (from -FLT_MAX to FLT_MAX) (default 0)

  -lmin              <int>        E..V...... minimum Lagrange factor (VBR) (from 0 to INT_MAX) (default 236)

  -lmax              <int>        E..V...... maximum Lagrange factor (VBR) (from 0 to INT_MAX) (default 3658)

  -ibias             <int>        E..V...... intra quant bias (from INT_MIN to INT_MAX) (default 999999)

  -pbias             <int>        E..V...... inter quant bias (from INT_MIN to INT_MAX) (default 999999)

  -rc_strategy       <int>        E..V...... ratecontrol method (from 0 to 1) (default ffmpeg)

     ffmpeg          0            E..V...... deprecated, does nothing

     xvid            0            E..V...... deprecated, does nothing

  -motion_est        <int>        E..V...... motion estimation algorithm (from 0 to 2) (default epzs)

     zero            0            E..V......

     epzs            1            E..V......

     xone            2            E..V......

  -force_duplicated_matrix <boolean>    E..V...... Always write luma and chroma matrix for mjpeg, useful for rtp streaming. (default false)

  -b_strategy        <int>        E..V...... Strategy to choose between I/P/B-frames (from 0 to 2) (default 0)

  -b_sensitivity     <int>        E..V...... Adjust sensitivity of b_frame_strategy 1 (from 1 to INT_MAX) (default 40)

  -brd_scale         <int>        E..V...... Downscale frames for dynamic B-frame decision (from 0 to 3) (default 0)

  -skip_threshold    <int>        E..V...... Frame skip threshold (from INT_MIN to INT_MAX) (default 0)

  -skip_factor       <int>        E..V...... Frame skip factor (from INT_MIN to INT_MAX) (default 0)

  -skip_exp          <int>        E..V...... Frame skip exponent (from INT_MIN to INT_MAX) (default 0)

  -skip_cmp          <int>        E..V...... Frame skip compare function (from INT_MIN to INT_MAX) (default dctmax)

     sad             0            E..V...... Sum of absolute differences, fast

     sse             1            E..V...... Sum of squared errors

     satd            2            E..V...... Sum of absolute Hadamard transformed differences

     dct             3            E..V...... Sum of absolute DCT transformed differences

     psnr            4            E..V...... Sum of squared quantization errors, low quality

     bit             5            E..V...... Number of bits needed for the block

     rd              6            E..V...... Rate distortion optimal, slow

     zero            7            E..V...... Zero

     vsad            8            E..V...... Sum of absolute vertical differences

     vsse            9            E..V...... Sum of squared vertical differences

     nsse            10           E..V...... Noise preserving sum of squared differences

     dct264          14           E..V......

     dctmax          13           E..V......

     chroma          256          E..V......

     msad            15           E..V...... Sum of absolute differences, median predicted

  -sc_threshold      <int>        E..V...... Scene change threshold (from INT_MIN to INT_MAX) (default 0)

  -noise_reduction   <int>        E..V...... Noise reduction (from INT_MIN to INT_MAX) (default 0)

  -mpeg_quant        <int>        E..V...... Use MPEG quantizers instead of H.263 (from 0 to 1) (default 0)

  -ps                <int>        E..V...... RTP payload size in bytes (from INT_MIN to INT_MAX) (default 0)

  -mepc              <int>        E..V...... Motion estimation bitrate penalty compensation (1.0 = 256) (from INT_MIN to INT_MAX) (default 256)

  -mepre             <int>        E..V...... pre motion estimation (from INT_MIN to INT_MAX) (default 0)

  -intra_penalty     <int>        E..V...... Penalty for intra blocks in block decision (from 0 to 1.07374e+09) (default 0)

  -a53cc             <boolean>    E..V...... Use A53 Closed Captions (if available) (default true)