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Encoder reference

Every encoder the application offers, with the exact options it exposes. This page is generated from the encoder descriptors in the source tree, so it always matches the version of the application it ships with.

Options appear under the label the interface uses. The value shown as the default is what a fresh configuration starts from; presets and the restored last-used configuration override it.

FFmpeg built-in

Encoders built into FFmpeg itself. They need nothing beyond a working FFmpeg build, and each is offered only when the configured FFmpeg exposes both the encoder and the muxer it writes through.

FFmpeg libopus

ffmpeg.libopus

Property Value
Codec Opus
Output ogg-opus (.opus)
Requires FFmpeg
Channel layouts Preserve, Mono, Stereo, 3.0, Quad, 5.0, 5.1, 6.1, 7.1
Sample rates Source, 8 kHz, 12 kHz, 16 kHz, 24 kHz, 48 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Bitrate Integer 160 kb/s 6 to 510 kb/s - -
Bitrate mode Choice Variable - Variable, Constrained variable, Constant -
Application Choice Audio - Audio, Voice, Low delay -
Complexity Integer 10 0 to 10 - -
Frame duration Choice 20 - 2.5, 5, 10, 20, 40, 60 -
Expected packet loss Integer 0% 0 to 100% - -
Custom FFmpeg arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

FFmpeg FLAC

ffmpeg.flac

Property Value
Codec FLAC
Output flac (.flac)
Requires FFmpeg
Channel layouts Preserve, Mono, Stereo, 3.0, Quad, 5.0, 5.1, 6.1, 7.1
Sample rates Source, 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 64 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Compression level Integer 5 0 to 12 - -
Custom FFmpeg arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

FFmpeg AAC

ffmpeg.aac

Property Value
Codec AAC
Output m4a (.m4a), adts-aac (.aac)
Requires FFmpeg
Channel layouts Preserve, Mono, Stereo, 3.0, Quad, 5.0, 5.1, 6.1, 7.1
Sample rates Source, 7.35 kHz, 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 64 kHz, 88.2 kHz, 96 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Rate control Choice Constant bitrate - Constant bitrate, Variable quality -
Bitrate Integer 192 kb/s 8 to 512 kb/s - Applies only when rate_control is cbr.
VBR quality Decimal 2.0 0.1 to 5 - Applies only when rate_control is vbr.
Coder Choice Two-loop - Two-loop, Fast -
Custom FFmpeg arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

FFmpeg libmp3lame

ffmpeg.libmp3lame

Property Value
Codec MP3
Output mp3 (.mp3)
Requires FFmpeg
Channel layouts Preserve, Mono, Stereo
Sample rates Source, 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Rate control Choice Variable quality - Variable quality, Constant bitrate, Average bitrate -
VBR quality Integer 0 0 to 9 - Applies only when rate_control is vbr.
Bitrate Choice 192 kb/s - 8 kb/s, 16 kb/s, 24 kb/s, 32 kb/s, 40 kb/s, 48 kb/s, 56 kb/s, 64 kb/s, 80 kb/s, 96 kb/s, 112 kb/s, 128 kb/s, 160 kb/s, 192 kb/s, 224 kb/s, 256 kb/s, 320 kb/s Applies only when rate_control is cbr, abr.
Algorithm quality Integer 0 0 to 9 - -
Custom FFmpeg arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

FFmpeg AC-3

ffmpeg.ac3

Property Value
Codec AC-3
Output ac3 (.ac3)
Requires FFmpeg
Channel layouts Preserve, Mono, Stereo, 2.1, 3.0, Quad, 4.0, 5.0, 5.1
Sample rates Source, 32 kHz, 44.1 kHz, 48 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Bitrate Choice 224 kb/s - Auto, 32 kb/s, 40 kb/s, 48 kb/s, 56 kb/s, 64 kb/s, 80 kb/s, 96 kb/s, 112 kb/s, 128 kb/s, 160 kb/s, 192 kb/s, 224 kb/s, 256 kb/s, 320 kb/s, 384 kb/s, 448 kb/s, 512 kb/s, 576 kb/s, 640 kb/s -
Custom FFmpeg arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

FFmpeg E-AC-3

ffmpeg.eac3

Property Value
Codec E-AC-3
Output eac3 (.eac3)
Requires FFmpeg
Channel layouts Preserve, Mono, Stereo, 2.1, 3.0, Quad, 4.0, 5.0, 5.1
Sample rates Source, 32 kHz, 44.1 kHz, 48 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Bitrate Choice 448 kb/s - Auto, 64 kb/s, 96 kb/s, 128 kb/s, 160 kb/s, 192 kb/s, 224 kb/s, 256 kb/s, 288 kb/s, 320 kb/s, 352 kb/s, 384 kb/s, 416 kb/s, 448 kb/s, 480 kb/s, 512 kb/s, 544 kb/s, 576 kb/s, 608 kb/s, 640 kb/s, 672 kb/s, 704 kb/s, 736 kb/s, 768 kb/s, 800 kb/s, 832 kb/s, 864 kb/s, 896 kb/s, 928 kb/s, 960 kb/s, 992 kb/s, 1024 kb/s, 1056 kb/s, 1088 kb/s, 1120 kb/s, 1152 kb/s, 1184 kb/s, 1216 kb/s, 1248 kb/s, 1280 kb/s, 1312 kb/s, 1344 kb/s, 1376 kb/s, 1408 kb/s, 1440 kb/s, 1472 kb/s, 1504 kb/s, 1536 kb/s, 1568 kb/s, 1600 kb/s, 1632 kb/s, 1664 kb/s, 1696 kb/s, 1728 kb/s, 1760 kb/s, 1792 kb/s, 1824 kb/s, 1856 kb/s, 1888 kb/s, 1920 kb/s, 1952 kb/s, 1984 kb/s, 2016 kb/s, 2048 kb/s, 2080 kb/s, 2112 kb/s, 2144 kb/s, 2176 kb/s, 2208 kb/s, 2240 kb/s, 2272 kb/s, 2304 kb/s, 2336 kb/s, 2368 kb/s, 2400 kb/s, 2432 kb/s, 2464 kb/s, 2496 kb/s, 2528 kb/s, 2560 kb/s, 2592 kb/s, 2624 kb/s, 2656 kb/s, 2688 kb/s, 2720 kb/s, 2752 kb/s, 2784 kb/s, 2816 kb/s, 2848 kb/s, 2880 kb/s, 2912 kb/s, 2944 kb/s, 2976 kb/s, 3008 kb/s, 3040 kb/s, 3072 kb/s, 3104 kb/s, 3136 kb/s, 3168 kb/s, 3200 kb/s, 3232 kb/s, 3264 kb/s, 3296 kb/s, 3328 kb/s, 3360 kb/s, 3392 kb/s, 3424 kb/s, 3456 kb/s, 3488 kb/s, 3520 kb/s, 3552 kb/s, 3584 kb/s, 3616 kb/s, 3648 kb/s, 3680 kb/s, 3712 kb/s, 3744 kb/s, 3776 kb/s, 3808 kb/s, 3840 kb/s, 3872 kb/s, 3904 kb/s, 3936 kb/s, 3968 kb/s, 4000 kb/s, 4032 kb/s, 4064 kb/s, 4096 kb/s, 4128 kb/s, 4160 kb/s, 4192 kb/s, 4224 kb/s, 4256 kb/s, 4288 kb/s, 4320 kb/s, 4352 kb/s, 4384 kb/s, 4416 kb/s, 4448 kb/s, 4480 kb/s, 4512 kb/s, 4544 kb/s, 4576 kb/s, 4608 kb/s, 4640 kb/s, 4672 kb/s, 4704 kb/s, 4736 kb/s, 4768 kb/s, 4800 kb/s, 4832 kb/s, 4864 kb/s, 4896 kb/s, 4928 kb/s, 4960 kb/s, 4992 kb/s, 5024 kb/s, 5056 kb/s, 5088 kb/s, 5120 kb/s, 5152 kb/s, 5184 kb/s, 5216 kb/s, 5248 kb/s, 5280 kb/s, 5312 kb/s, 5344 kb/s, 5376 kb/s, 5408 kb/s, 5440 kb/s, 5472 kb/s, 5504 kb/s, 5536 kb/s, 5568 kb/s, 5600 kb/s, 5632 kb/s, 5664 kb/s, 5696 kb/s, 5728 kb/s, 5760 kb/s, 5792 kb/s, 5824 kb/s, 5856 kb/s, 5888 kb/s, 5920 kb/s, 5952 kb/s, 5984 kb/s, 6016 kb/s, 6048 kb/s, 6080 kb/s, 6112 kb/s, 6144 kb/s -
Custom FFmpeg arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

FFmpeg DTS (DCA)

ffmpeg.dca

Property Value
Codec DTS
Output dts (.dts)
Requires FFmpeg
Channel layouts Preserve, Mono, Stereo, 2.2, 5.0, 5.1
Sample rates Source, 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Bitrate Choice 1411.2 kb/s - Auto, 32 kb/s, 56 kb/s, 64 kb/s, 96 kb/s, 112 kb/s, 128 kb/s, 192 kb/s, 224 kb/s, 256 kb/s, 320 kb/s, 384 kb/s, 448 kb/s, 512 kb/s, 576 kb/s, 640 kb/s, 768 kb/s, 896 kb/s, 1024 kb/s, 1152 kb/s, 1280 kb/s, 1344 kb/s, 1408 kb/s, 1411.2 kb/s, 1472 kb/s, 1536 kb/s, 1920 kb/s, 2048 kb/s, 3072 kb/s, 3840 kb/s -
Custom FFmpeg arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

FFmpeg ALAC

ffmpeg.alac

Property Value
Codec ALAC
Output m4a (.m4a)
Requires FFmpeg
Channel layouts Preserve, Mono, Stereo, 3.0, 4.0, 5.0 (back), 5.1 (back), 6.1 (back), 7.1 (wide back)
Sample rates Source, 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 64 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Compression level Integer 2 0 to 2 - -
Custom FFmpeg arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

Standalone encoders

Third-party command-line encoders. FFmpeg decodes the selected source stream to PCM over a pipe and the external encoder writes the result straight to the queue's temporary output, so cancellation and atomic publishing behave exactly as they do for the built-in encoders.

opusenc (standalone Opus)

opusenc.opus

Property Value
Codec Opus
Output ogg-opus (.opus)
Requires FFmpeg, opusenc
Channel layouts Preserve, Mono, Stereo, 3.0, Quad, 5.0, 5.1, 6.1, 7.1
Sample rates Source, 8 kHz, 12 kHz, 16 kHz, 24 kHz, 48 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Bitrate Integer 160 kb/s 6 to 2048 kb/s - -
Bitrate mode Choice Variable - Variable, Constrained variable, Hard constant -
Signal tuning Choice Automatic - Automatic, Music, Speech -
Complexity Integer 10 0 to 10 - -
Frame duration Choice 20 - 2.5, 5, 10, 20, 40, 60 -
Expected packet loss Integer 0% 0 to 100% - -
Phase inversion Choice Enabled - Enabled, Disabled -
Maximum container delay Integer 1000 ms 0 to 1000 ms - -
Custom opusenc arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, decode:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

qaac (Apple AAC)

qaac.aac

Property Value
Codec AAC
Output m4a (.m4a), adts-aac (.aac)
Requires FFmpeg, qaac
Channel layouts Preserve, Mono, Stereo, 3.0, Quad, 5.0, 5.1, 6.1, 7.1
Sample rates Source, 7.35 kHz, 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 64 kHz, 88.2 kHz, 96 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Profile Choice AAC-LC - AAC-LC, HE-AAC -
Rate control Choice True VBR - True VBR, Constrained VBR, Average bitrate, Constant bitrate -
TVBR quality Integer 90 0 to 127 - Applies only when rate_control is tvbr.
Bitrate Integer 192 kb/s 8 to 512 kb/s - Applies only when rate_control is cvbr, abr, cbr.
Encoder quality Choice Best - Best, High, Fast -
Custom qaac arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, decode:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

fdkaac (Fraunhofer FDK AAC)

fdkaac.aac

Property Value
Codec AAC
Output m4a (.m4a), adts-aac (.aac)
Requires FFmpeg, fdkaac
Channel layouts Preserve, Mono, Stereo, 3.0, 4.0, 5.0, 5.1, 7.1
Sample rates Source, 7.35 kHz, 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz, 48 kHz, 64 kHz, 88.2 kHz, 96 kHz

All common audio controls apply.

Option Type Default Range Choices Notes
Profile Choice AAC-LC - AAC-LC, HE-AAC, HE-AAC v2 -
Rate control Choice Constant bitrate - Constant bitrate, Variable quality -
Bitrate Integer 192 kb/s 8 to 1024 kb/s - Applies only when rate_control is cbr.
VBR quality Integer 3 1 to 5 - Applies only when rate_control is vbr.
Afterburner Choice On - On, Off -
Custom fdkaac arguments Text - - - One argument group per line, never run through a shell. Prefix a line with pre:, decode:, out: to place it. {name} expands to a managed value or a 'var name = value' line. A flag that collides with a managed setting overrides it.

DeeZy (Dolby professional)

Licensed Dolby encoding through DeeZy. These need DeeZy and the Dolby Encoding Engine, and the Atmos and AC-4 adapters additionally need TrueHDD. See DeeZy encoders for how the adapters behave beyond their options.

DeeZy DD (Dolby Digital)

deezy.dd

Property Value
Codec AC-3
Output ac3 (.ac3)
Requires FFmpeg, DeeZy, Dolby Encoding Engine
Channel layouts Auto, Mono, Stereo, 5.1

Common audio controls: channel layout, delay. Not available: sample rate, gain, tempo.

Option Type Default Range Choices Notes
Bitrate Choice Automatic (DeeZy default) - Automatic (DeeZy default), 96 kb/s, 112 kb/s, 128 kb/s, 160 kb/s, 192 kb/s, 224 kb/s, 256 kb/s, 320 kb/s, 384 kb/s, 448 kb/s, 512 kb/s, 576 kb/s, 640 kb/s Only bitrates accepted by the selected DeeZy layout or profile are shown.
Line-mode DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech -
RF-mode DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech -
Custom dialnorm Integer 0 dB -31 to 0 dB - Use 0 to let DeeZy measure dialnorm.
Dialogue Intelligence Yes/no Yes - - -
Speech threshold Integer 15% 0 to 100% - Applies only to some configurations.
Metering mode Choice ITU-R BS.1770-3 - ITU-R BS.1770-1, ITU-R BS.1770-2, ITU-R BS.1770-3, Leq(A) -
Stereo downmix Choice Lo/Ro - Automatic, Lo/Ro, Lt/Rt, Dolby Pro Logic II -
Low-pass filter Yes/no Yes - - -
Surround 3 dB attenuation Yes/no Yes - - -
Surround 90-degree phase shift Yes/no Yes - - -
Upmix 5.0 to 5.1 Yes/no No - - -
Advanced downmix metadata Text - - - Optional Lt/Rt or Lo/Ro level arguments. Inputs, outputs, dependencies, and managed encoder settings cannot be overridden.

DeeZy DDP (Dolby Digital Plus)

deezy.ddp

Property Value
Codec E-AC-3
Output eac3 (.eac3)
Requires FFmpeg, DeeZy, Dolby Encoding Engine
Channel layouts Auto, Mono, Stereo, 5.1, 7.1

Common audio controls: channel layout, delay. Not available: sample rate, gain, tempo.

Option Type Default Range Choices Notes
Bitrate Choice Automatic (DeeZy default) - Automatic (DeeZy default), 32 kb/s, 40 kb/s, 48 kb/s, 56 kb/s, 64 kb/s, 72 kb/s, 80 kb/s, 88 kb/s, 96 kb/s, 104 kb/s, 112 kb/s, 120 kb/s, 128 kb/s, 144 kb/s, 160 kb/s, 176 kb/s, 192 kb/s, 200 kb/s, 208 kb/s, 216 kb/s, 224 kb/s, 232 kb/s, 240 kb/s, 248 kb/s, 256 kb/s, 272 kb/s, 288 kb/s, 304 kb/s, 320 kb/s, 336 kb/s, 352 kb/s, 368 kb/s, 384 kb/s, 400 kb/s, 448 kb/s, 504 kb/s, 512 kb/s, 576 kb/s, 640 kb/s, 704 kb/s, 768 kb/s, 832 kb/s, 896 kb/s, 960 kb/s, 1008 kb/s, 1024 kb/s Only bitrates accepted by the selected DeeZy layout or profile are shown.
Line-mode DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech -
RF-mode DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech -
Custom dialnorm Integer 0 dB -31 to 0 dB - Use 0 to let DeeZy measure dialnorm.
Dialogue Intelligence Yes/no Yes - - -
Speech threshold Integer 15% 0 to 100% - Applies only to some configurations.
Metering mode Choice ITU-R BS.1770-3 - ITU-R BS.1770-1, ITU-R BS.1770-2, ITU-R BS.1770-3, Leq(A) -
Stereo downmix Choice Lo/Ro - Automatic, Lo/Ro, Lt/Rt, Dolby Pro Logic II -
Low-pass filter Yes/no Yes - - -
Surround 3 dB attenuation Yes/no Yes - - -
Surround 90-degree phase shift Yes/no Yes - - -
Upmix 5.0 to 5.1 Yes/no No - - -
Advanced downmix metadata Text - - - Optional Lt/Rt or Lo/Ro level arguments. Inputs, outputs, dependencies, and managed encoder settings cannot be overridden.

DeeZy DDP-BluRay 7.1

deezy.ddp_bluray

Property Value
Codec E-AC-3
Output eac3 (.eac3)
Requires FFmpeg, DeeZy, Dolby Encoding Engine

Common audio controls: delay. Not available: sample rate, channel layout, gain, tempo.

Option Type Default Range Choices Notes
Bitrate Choice Automatic (DeeZy default) - Automatic (DeeZy default), 768 kb/s, 1024 kb/s, 1280 kb/s, 1536 kb/s, 1664 kb/s Only bitrates accepted by the selected DeeZy layout or profile are shown.
Line-mode DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech -
RF-mode DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech -
Custom dialnorm Integer 0 dB -31 to 0 dB - Use 0 to let DeeZy measure dialnorm.
Dialogue Intelligence Yes/no Yes - - -
Speech threshold Integer 15% 0 to 100% - Applies only to some configurations.
Metering mode Choice ITU-R BS.1770-3 - ITU-R BS.1770-1, ITU-R BS.1770-2, ITU-R BS.1770-3, Leq(A) -
Stereo downmix Choice Lo/Ro - Automatic, Lo/Ro, Lt/Rt, Dolby Pro Logic II -
Low-pass filter Yes/no Yes - - -
Surround 3 dB attenuation Yes/no Yes - - -
Surround 90-degree phase shift Yes/no Yes - - -
Advanced downmix metadata Text - - - Optional Lt/Rt or Lo/Ro level arguments. Inputs, outputs, dependencies, and managed encoder settings cannot be overridden.

DeeZy Dolby Digital Plus Atmos

deezy.atmos

Property Value
Codec Dolby Digital Plus Atmos
Output eac3 (.eac3)
Requires FFmpeg, DeeZy, Dolby Encoding Engine, TrueHDD

Common audio controls: delay. Not available: sample rate, channel layout, gain, tempo.

Option Type Default Range Choices Notes
Bitrate Choice Automatic (DeeZy default) - Automatic (DeeZy default), 384 kb/s, 448 kb/s, 512 kb/s, 576 kb/s, 640 kb/s, 768 kb/s, 1024 kb/s, 1152 kb/s, 1280 kb/s, 1408 kb/s, 1512 kb/s, 1536 kb/s, 1664 kb/s Only bitrates accepted by the selected DeeZy layout or profile are shown.
Line-mode DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech -
RF-mode DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech -
Custom dialnorm Integer 0 dB -31 to 0 dB - Use 0 to let DeeZy measure dialnorm.
Dialogue Intelligence Yes/no Yes - - -
Speech threshold Integer 15% 0 to 100% - Applies only to some configurations.
Metering mode Choice ITU-R BS.1770-4 - ITU-R BS.1770-1, ITU-R BS.1770-2, ITU-R BS.1770-3, ITU-R BS.1770-4, Leq(A) -
Stereo downmix Choice Lo/Ro - Automatic, Lo/Ro, Lt/Rt, Dolby Pro Logic II -
Atmos mode Choice Streaming (5.1) - Streaming (5.1), BluRay (7.1) -
TrueHD warp mode Choice Normal - Normal, Warping, Pro Logic IIx, Lo/Ro -
Bed conformance Yes/no No - - -
Advanced downmix metadata Text - - - Optional Lt/Rt or Lo/Ro level arguments. Inputs, outputs, dependencies, and managed encoder settings cannot be overridden.

DeeZy Dolby AC-4

deezy.ac4

Property Value
Codec AC-4
Output ac4 (.ac4)
Requires FFmpeg, DeeZy, Dolby Encoding Engine, TrueHDD

Common audio controls: delay. Not available: sample rate, channel layout, gain, tempo.

Option Type Default Range Choices Notes
Bitrate Choice Automatic (DeeZy default) - Automatic (DeeZy default), 64 kb/s, 72 kb/s, 112 kb/s, 144 kb/s, 256 kb/s, 320 kb/s Only bitrates accepted by the selected DeeZy layout or profile are shown.
Dialogue Intelligence Yes/no Yes - - -
Speech threshold Integer 15% 0 to 100% - Applies only to some configurations.
Metering mode Choice ITU-R BS.1770-4 - ITU-R BS.1770-1, ITU-R BS.1770-2, ITU-R BS.1770-3, ITU-R BS.1770-4, Leq(A) -
Encoding profile Choice IMS - IMS, IMS Music -
IMS legacy presentation Yes/no No - - -
DDP DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech, None -
Flat-panel DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech, None -
Home-theatre DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech, None -
Portable-headphones DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech, None -
Portable-speakers DRC Choice Film light - Film standard, Film light, Music standard, Music light, Speech, None -
TrueHD warp mode Choice Normal - Normal, Warping, Pro Logic IIx, Lo/Ro -
Bed conformance Yes/no No - - -