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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 cross cross cross
alac ipod alac 128000 44100 cross cross cross
dash-128k-audio mp4 libfdk_aac 128000 44100 cross cross cross
dash-256k-audio mp4 libfdk_aac 256000 44100 cross cross cross
dash-32k-audio mp4 libfdk_aac 32000 44100 cross cross cross
dash-64k-audio mp4 libfdk_aac 64000 44100 cross cross cross
empty cross cross cross cross cross cross cross
flac flac cross 128000 44100 cross cross cross
gif gif cross cross cross cross cross 480x270
mp3 mp3 libmp3lame 128000 44100 cross cross cross
ogg ogg libvorbis cross cross cross cross cross
opus ogg libopus 128000 48000 cross cross cross
speech wav pcm_s16le cross 16000 cross cross cross
wav wav pcm_s16le cross cross cross cross cross

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 cross cross cross
alac ipod alac 128000 44100 cross cross cross
audio/aac mp4 libfdk_aac cross 48000 cross cross cross
audio/alac m4a alac 128000 44100 cross cross cross
audio/flac flac flac 128000 44100 cross cross cross
audio/mp3 mp3 libmp3lame 128000 44100 cross cross cross
audio/ogg ogg libvorbis cross cross cross cross cross
dash/128k-audio mp4 libfdk_aac 128000 44100 cross cross cross
dash/256k-audio mp4 libfdk_aac 256000 44100 cross cross cross
dash/32k-audio mp4 libfdk_aac 32000 44100 cross cross cross
dash/64k-audio mp4 libfdk_aac 64000 44100 cross cross cross
dash-128k-audio mp4 libfdk_aac 128000 44100 cross cross cross
dash-256k-audio mp4 libfdk_aac 256000 44100 cross cross cross
dash-32k-audio mp4 libfdk_aac 32000 44100 cross cross cross
dash-64k-audio mp4 libfdk_aac 64000 44100 cross cross cross
empty cross cross cross cross cross cross cross
flac flac cross 128000 44100 cross cross cross
gif gif cross cross cross cross cross 480x270
mp3 mp3 libmp3lame 128000 44100 cross cross cross
ogg ogg libvorbis cross cross cross cross cross
opus ogg libopus 128000 48000 cross cross cross
speech wav pcm_s16le cross 16000 cross cross cross
wav wav pcm_s16le cross cross cross cross cross

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: "v5.0.0" 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 cross cross cross
alac ipod alac 128000 44100 cross cross cross
audio/aac mp4 libfdk_aac cross 48000 cross cross cross
audio/alac m4a alac 128000 44100 cross cross cross
audio/flac flac flac 128000 44100 cross cross cross
audio/mp3 mp3 libmp3lame 128000 44100 cross cross cross
audio/ogg ogg libvorbis cross cross cross cross cross
dash/128k-audio mp4 libfdk_aac 128000 44100 cross cross cross
dash/256k-audio mp4 libfdk_aac 256000 44100 cross cross cross
dash/32k-audio mp4 libfdk_aac 32000 44100 cross cross cross
dash/64k-audio mp4 libfdk_aac 64000 44100 cross cross cross
dash-128k-audio mp4 libfdk_aac 128000 44100 cross cross cross
dash-256k-audio mp4 libfdk_aac 256000 44100 cross cross cross
dash-32k-audio mp4 libfdk_aac 32000 44100 cross cross cross
dash-64k-audio mp4 libfdk_aac 64000 44100 cross cross cross
empty cross cross cross cross cross cross cross
flac flac cross 128000 44100 cross cross cross
gif gif cross cross cross cross cross 480x270
mp3 mp3 libmp3lame 128000 44100 cross cross cross
ogg ogg libvorbis cross cross cross cross cross
opus ogg libopus 128000 48000 cross cross cross
speech wav pcm_s16le cross 16000 cross cross cross
wav wav pcm_s16le cross cross cross cross cross

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.

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