ffmpeg-avcodec 1.1.4 · OCaml Package

Video codecs.

type 'mode t = (Avutil.video, 'mode) codec

Main types for video codecs.

type id = [

| `Mpeg1video
| `Mpeg2video
| `H261
| `H263
| `Rv10
| `Rv20
| `Mjpeg
| `Mjpegb
| `Ljpeg
| `Sp5x
| `Jpegls
| `Mpeg4
| `Rawvideo
| `Msmpeg4v1
| `Msmpeg4v2
| `Msmpeg4v3
| `Wmv1
| `Wmv2
| `H263p
| `H263i
| `Flv1
| `Svq1
| `Svq3
| `Dvvideo
| `Huffyuv
| `Cyuv
| `H264
| `Indeo3
| `Vp3
| `Theora
| `Asv1
| `Asv2
| `Ffv1
| `_4xm
| `Vcr1
| `Cljr
| `Mdec
| `Roq
| `Interplay_video
| `Xan_wc3
| `Xan_wc4
| `Rpza
| `Cinepak
| `Ws_vqa
| `Msrle
| `Msvideo1
| `Idcin
| `_8bps
| `Smc
| `Flic
| `Truemotion1
| `Vmdvideo
| `Mszh
| `Zlib
| `Qtrle
| `Tscc
| `Ulti
| `Qdraw
| `Vixl
| `Qpeg
| `Png
| `Ppm
| `Pbm
| `Pgm
| `Pgmyuv
| `Pam
| `Ffvhuff
| `Rv30
| `Rv40
| `Vc1
| `Wmv3
| `Loco
| `Wnv1
| `Aasc
| `Indeo2
| `Fraps
| `Truemotion2
| `Bmp
| `Cscd
| `Mmvideo
| `Zmbv
| `Avs
| `Smackvideo
| `Nuv
| `Kmvc
| `Flashsv
| `Cavs
| `Jpeg2000
| `Vmnc
| `Vp5
| `Vp6
| `Vp6f
| `Targa
| `Dsicinvideo
| `Tiertexseqvideo
| `Tiff
| `Gif
| `Dxa
| `Dnxhd
| `Thp
| `Sgi
| `C93
| `Bethsoftvid
| `Ptx
| `Txd
| `Vp6a
| `Amv
| `Vb
| `Pcx
| `Sunrast
| `Indeo4
| `Indeo5
| `Mimic
| `Rl2
| `Escape124
| `Dirac
| `Bfi
| `Cmv
| `Motionpixels
| `Tgv
| `Tgq
| `Tqi
| `Aura
| `Aura2
| `V210x
| `Tmv
| `V210
| `Dpx
| `Mad
| `Frwu
| `Flashsv2
| `Cdgraphics
| `R210
| `Anm
| `Binkvideo
| `Iff_ilbm
| `Kgv1
| `Yop
| `Vp8
| `Pictor
| `Ansi
| `A64_multi
| `A64_multi5
| `R10k
| `Mxpeg
| `Lagarith
| `Prores
| `Jv
| `Dfa
| `Wmv3image
| `Vc1image
| `Utvideo
| `Bmv_video
| `Vble
| `Dxtory
| `V410
| `Xwd
| `Cdxl
| `Xbm
| `Zerocodec
| `Mss1
| `Msa1
| `Tscc2
| `Mts2
| `Cllc
| `Mss2
| `Vp9
| `Aic
| `Escape130
| `G2m
| `Webp
| `Hnm4_video
| `Hevc
| `Fic
| `Alias_pix
| `Brender_pix
| `Paf_video
| `Exr
| `Vp7
| `Sanm
| `Sgirle
| `Mvc1
| `Mvc2
| `Hqx
| `Tdsc
| `Hq_hqa
| `Hap
| `Dds
| `Dxv
| `Screenpresso
| `Rscc
| `Avs2
| `Pgx
| `Avs3
| `Msp2
| `Vvc
| `Y41p
| `Avrp
| `_012v
| `Avui
| `Ayuv
| `Targa_y216
| `V308
| `V408
| `Yuv4
| `Avrn
| `Cpia
| `Xface
| `Snow
| `Smvjpeg
| `Apng
| `Daala
| `Cfhd
| `Truemotion2rt
| `M101
| `Magicyuv
| `Sheervideo
| `Ylc
| `Psd
| `Pixlet
| `Speedhq
| `Fmvc
| `Scpr
| `Clearvideo
| `Xpm
| `Av1
| `Bitpacked
| `Mscc
| `Srgc
| `Svg
| `Gdv
| `Fits
| `Imm4
| `Prosumer
| `Mwsc
| `Wcmv
| `Rasc
| `Hymt
| `Arbc
| `Agm
| `Lscr
| `Vp4
| `Imm5
| `Mvdv
| `Mvha
| `Cdtoons
| `Mv30
| `Notchlc
| `Pfm
| `Mobiclip
| `Photocd
| `Ipu
| `Argo
| `Cri
| `Simbiosis_imx
| `Sga_video
| `Gem
| `Vbn
| `Jpegxl
| `Qoi
| `Phm

]

Video codec ids. Careful: different codecs share the same ID, e.g. aac and libfdk_aac

val descriptor : id -> descriptor option

Get the codec descriptor.

val codec_ids : 
  [ `Mpeg1video
  | `Mpeg2video
  | `H261
  | `H263
  | `Rv10
  | `Rv20
  | `Mjpeg
  | `Mjpegb
  | `Ljpeg
  | `Sp5x
  | `Jpegls
  | `Mpeg4
  | `Rawvideo
  | `Msmpeg4v1
  | `Msmpeg4v2
  | `Msmpeg4v3
  | `Wmv1
  | `Wmv2
  | `H263p
  | `H263i
  | `Flv1
  | `Svq1
  | `Svq3
  | `Dvvideo
  | `Huffyuv
  | `Cyuv
  | `H264
  | `Indeo3
  | `Vp3
  | `Theora
  | `Asv1
  | `Asv2
  | `Ffv1
  | `_4xm
  | `Vcr1
  | `Cljr
  | `Mdec
  | `Roq
  | `Interplay_video
  | `Xan_wc3
  | `Xan_wc4
  | `Rpza
  | `Cinepak
  | `Ws_vqa
  | `Msrle
  | `Msvideo1
  | `Idcin
  | `_8bps
  | `Smc
  | `Flic
  | `Truemotion1
  | `Vmdvideo
  | `Mszh
  | `Zlib
  | `Qtrle
  | `Tscc
  | `Ulti
  | `Qdraw
  | `Vixl
  | `Qpeg
  | `Png
  | `Ppm
  | `Pbm
  | `Pgm
  | `Pgmyuv
  | `Pam
  | `Ffvhuff
  | `Rv30
  | `Rv40
  | `Vc1
  | `Wmv3
  | `Loco
  | `Wnv1
  | `Aasc
  | `Indeo2
  | `Fraps
  | `Truemotion2
  | `Bmp
  | `Cscd
  | `Mmvideo
  | `Zmbv
  | `Avs
  | `Smackvideo
  | `Nuv
  | `Kmvc
  | `Flashsv
  | `Cavs
  | `Jpeg2000
  | `Vmnc
  | `Vp5
  | `Vp6
  | `Vp6f
  | `Targa
  | `Dsicinvideo
  | `Tiertexseqvideo
  | `Tiff
  | `Gif
  | `Dxa
  | `Dnxhd
  | `Thp
  | `Sgi
  | `C93
  | `Bethsoftvid
  | `Ptx
  | `Txd
  | `Vp6a
  | `Amv
  | `Vb
  | `Pcx
  | `Sunrast
  | `Indeo4
  | `Indeo5
  | `Mimic
  | `Rl2
  | `Escape124
  | `Dirac
  | `Bfi
  | `Cmv
  | `Motionpixels
  | `Tgv
  | `Tgq
  | `Tqi
  | `Aura
  | `Aura2
  | `V210x
  | `Tmv
  | `V210
  | `Dpx
  | `Mad
  | `Frwu
  | `Flashsv2
  | `Cdgraphics
  | `R210
  | `Anm
  | `Binkvideo
  | `Iff_ilbm
  | `Kgv1
  | `Yop
  | `Vp8
  | `Pictor
  | `Ansi
  | `A64_multi
  | `A64_multi5
  | `R10k
  | `Mxpeg
  | `Lagarith
  | `Prores
  | `Jv
  | `Dfa
  | `Wmv3image
  | `Vc1image
  | `Utvideo
  | `Bmv_video
  | `Vble
  | `Dxtory
  | `V410
  | `Xwd
  | `Cdxl
  | `Xbm
  | `Zerocodec
  | `Mss1
  | `Msa1
  | `Tscc2
  | `Mts2
  | `Cllc
  | `Mss2
  | `Vp9
  | `Aic
  | `Escape130
  | `G2m
  | `Webp
  | `Hnm4_video
  | `Hevc
  | `Fic
  | `Alias_pix
  | `Brender_pix
  | `Paf_video
  | `Exr
  | `Vp7
  | `Sanm
  | `Sgirle
  | `Mvc1
  | `Mvc2
  | `Hqx
  | `Tdsc
  | `Hq_hqa
  | `Hap
  | `Dds
  | `Dxv
  | `Screenpresso
  | `Rscc
  | `Avs2
  | `Pgx
  | `Avs3
  | `Msp2
  | `Vvc
  | `Y41p
  | `Avrp
  | `_012v
  | `Avui
  | `Ayuv
  | `Targa_y216
  | `V308
  | `V408
  | `Yuv4
  | `Avrn
  | `Cpia
  | `Xface
  | `Snow
  | `Smvjpeg
  | `Apng
  | `Daala
  | `Cfhd
  | `Truemotion2rt
  | `M101
  | `Magicyuv
  | `Sheervideo
  | `Ylc
  | `Psd
  | `Pixlet
  | `Speedhq
  | `Fmvc
  | `Scpr
  | `Clearvideo
  | `Xpm
  | `Av1
  | `Bitpacked
  | `Mscc
  | `Srgc
  | `Svg
  | `Gdv
  | `Fits
  | `Imm4
  | `Prosumer
  | `Mwsc
  | `Wcmv
  | `Rasc
  | `Hymt
  | `Arbc
  | `Agm
  | `Lscr
  | `Vp4
  | `Imm5
  | `Mvdv
  | `Mvha
  | `Cdtoons
  | `Mv30
  | `Notchlc
  | `Pfm
  | `Mobiclip
  | `Photocd
  | `Ipu
  | `Argo
  | `Cri
  | `Simbiosis_imx
  | `Sga_video
  | `Gem
  | `Vbn
  | `Jpegxl
  | `Qoi
  | `Phm ]
    list

List all video codec IDs.

val encoders : encode t list

List of all available video encoders.

val decoders : decode t list

List of all available video decoders.

val find_encoder_by_name : string -> encode t

Find an encoder from its name.

Raise Error if the codec is not found or is not an audio codec.

val find_encoder : id -> encode t

Find an encoder from its id.

Raise Error if the codec is not found or is not an audio codec.

val find_decoder_by_name : string -> decode t

Find a decoder from its name.

Raise Error if the codec is not found or is not an audio codec.

val find_decoder : id -> decode t

Find a decoder from its id.

Raise Error if the codec is not found or is not an audio codec.

val get_supported_frame_rates : _ t -> Avutil.rational list

Return the list of supported frame rates of the codec.

val find_best_frame_rate : _ t -> Avutil.rational -> Avutil.rational

Avcodec.Video.find_best_frame_rate codec default return the best frame rate of the codec codec or the default value if the codec has no frame rate.

val get_supported_pixel_formats : _ t -> Avutil.Pixel_format.t list

Return the list of supported pixel formats of the codec.

val find_best_pixel_format : 
  ?hwaccel:bool ->
  _ t ->
  Avutil.Pixel_format.t ->
  Avutil.Pixel_format.t

Avcodec.Video.find_best_pixel_format codec default return the best pixel format of the codec codec or the default value if the codec has no pixel format.

val create_parser : 
  ?params:Avutil.video params ->
  decode t ->
  Avutil.video Packet.parser

Avcodec.Video.create_parser codec create an video packet parser.

Raise Error if the parser creation failed.

val create_decoder : 
  ?params:Avutil.video params ->
  decode t ->
  Avutil.video decoder

Avcodec.Video.create_decoder codec create a video decoder.

Raise Error if the decoder creation failed.

type hardware_context = [

| `Device_context of Avutil.HwContext.device_context
| `Frame_context of Avutil.HwContext.frame_context

]

val create_encoder : 
  ?opts:Avutil.opts ->
  ?frame_rate:Avutil.rational ->
  ?hardware_context:hardware_context ->
  pixel_format:Avutil.Pixel_format.t ->
  width:int ->
  height:int ->
  time_base:Avutil.rational ->
  encode t ->
  Avutil.video encoder

Avcodec.Video.create_encoder create a video encoder.

Params have the same semantics as in Av.new_video_stream

Raise Error if the encoder creation failed.

val get_name : (_, _) codec -> string

Return the name of a codec.

val get_description : (_, _) codec -> string

Return the description of a codec.

val string_of_id : id -> string

Return the name of the codec.

val get_id : _ t -> id

Return the ID (class) of a codec.

val get_params_id : Avutil.video params -> id

Return the id of the codec params.

val get_width : Avutil.video params -> int

Returns the width set for the codec params.

val get_height : Avutil.video params -> int

Returns the height set for the codec params.

val get_sample_aspect_ratio : Avutil.video params -> Avutil.rational

Returns the sample aspect ratio set for the codec params.

val get_pixel_format : Avutil.video params -> Avutil.Pixel_format.t option

Returns the pixel format set for the codec params.

val get_pixel_aspect : Avutil.video params -> Avutil.rational option

Returns the pixel aspect set for the codec params.

val get_bit_rate : Avutil.video params -> int

Returns the bit rate set for the codec.

package ffmpeg-avcodec