Audio encoding presets
These are supported if you were to specify ffmpeg_stack: "v3.3.3"
in your Assembly Instructions.
The recommended version is: v4.3.1
Name | Format | Audio codec | Audio bitrate | Audio frequency | Video codec | Video bitrate | Video resolution |
---|---|---|---|---|---|---|---|
aac
|
mp4
|
libfdk_aac
|
128000
|
44100
|
|
|
|
alac
|
ipod
|
alac
|
128000
|
44100
|
|
|
|
dash-128k-audio
|
mp4
|
libfdk_aac
|
128000
|
44100
|
|
|
|
dash-256k-audio
|
mp4
|
libfdk_aac
|
256000
|
44100
|
|
|
|
dash-32k-audio
|
mp4
|
libfdk_aac
|
32000
|
44100
|
|
|
|
dash-64k-audio
|
mp4
|
libfdk_aac
|
64000
|
44100
|
|
|
|
empty
|
|
|
|
|
|
|
|
flac
|
flac
|
|
128000
|
44100
|
|
|
|
gif
|
gif
|
|
|
|
|
|
480x270
|
mp3
|
mp3
|
libmp3lame
|
128000
|
44100
|
|
|
|
ogg
|
ogg
|
libvorbis
|
|
|
|
|
|
opus
|
ogg
|
libopus
|
128000
|
48000
|
|
|
|
speech
|
wav
|
pcm_s16le
|
|
16000
|
|
|
|
wav
|
wav
|
pcm_s16le
|
|
|
|
|
|
You can override any preset's setting, such as a file's bitrate, or even the file's format & codecs via
a Robot's ffmpeg
parameter.
The hls-
and dash-
presets are intended for use
in combination with our /video/adaptive Robot.
These are supported if you were to specify ffmpeg_stack: "v4.3.1"
in your Assembly Instructions.
The recommended version is: v4.3.1
Name | Format | Audio codec | Audio bitrate | Audio frequency | Video codec | Video bitrate | Video resolution |
---|---|---|---|---|---|---|---|
aac
|
mp4
|
libfdk_aac
|
128000
|
44100
|
|
|
|
alac
|
ipod
|
alac
|
128000
|
44100
|
|
|
|
audio/aac
|
mp4
|
libfdk_aac
|
|
48000
|
|
|
|
audio/alac
|
m4a
|
alac
|
128000
|
44100
|
|
|
|
audio/flac
|
flac
|
flac
|
128000
|
44100
|
|
|
|
audio/mp3
|
mp3
|
libmp3lame
|
128000
|
44100
|
|
|
|
audio/ogg
|
ogg
|
libvorbis
|
|
|
|
|
|
dash/128k-audio
|
mp4
|
libfdk_aac
|
128000
|
44100
|
|
|
|
dash/256k-audio
|
mp4
|
libfdk_aac
|
256000
|
44100
|
|
|
|
dash/32k-audio
|
mp4
|
libfdk_aac
|
32000
|
44100
|
|
|
|
dash/64k-audio
|
mp4
|
libfdk_aac
|
64000
|
44100
|
|
|
|
dash-128k-audio
|
mp4
|
libfdk_aac
|
128000
|
44100
|
|
|
|
dash-256k-audio
|
mp4
|
libfdk_aac
|
256000
|
44100
|
|
|
|
dash-32k-audio
|
mp4
|
libfdk_aac
|
32000
|
44100
|
|
|
|
dash-64k-audio
|
mp4
|
libfdk_aac
|
64000
|
44100
|
|
|
|
empty
|
|
|
|
|
|
|
|
flac
|
flac
|
|
128000
|
44100
|
|
|
|
gif
|
gif
|
|
|
|
|
|
480x270
|
mp3
|
mp3
|
libmp3lame
|
128000
|
44100
|
|
|
|
ogg
|
ogg
|
libvorbis
|
|
|
|
|
|
opus
|
ogg
|
libopus
|
128000
|
48000
|
|
|
|
speech
|
wav
|
pcm_s16le
|
|
16000
|
|
|
|
wav
|
wav
|
pcm_s16le
|
|
|
|
|
|
You can override any preset's setting, such as a file's bitrate, or even the file's format & codecs via
a Robot's ffmpeg
parameter.
The hls-
and dash-
presets are intended for use
in combination with our /video/adaptive Robot.