Input Formats

Containers

The container formats we allow for upload and ingestion:

Name	Description
ASF	Advanced Systems Format
AVI	Audio Video Interleave
FLV	Macromedia Flash video files
MKV	Matroska Multimedia Container
MOV	Apple QuickTime
MPEG	MPEG-1 Systems / Program stream
MTS	MPEG-2 Transport Stream
MP4	MPEG-4
MXF	Material eXchange Format (SMPTE 377M)
OGG	Ogg
VOB	Video Object (MPEG program stream)

Video Decoders

A list of the most common video formats we can decode:

Name	Description
ProRes	Apple ProRes
AV1	AOMedia Video 1
DNxHD	Avid DNxHD
DNxHR	Avid DNxHR
DV	Digital Video
FFV1	FF video codec 1
FLV	Flash Video
H.263(+)	H.263-1996 (v1), H.263-1998 (v2)
H.264 / AVC	MPEG-4 AVC / MPEG-4 part 10
H.265 / HEVC	High-Efficiency Video Coding
MPEG-1	MPEG-1 Video
MPEG-2	MPEG-2 Video
MPEG-4	MPEG-4 part 2 (including Microsoft variants)
VP4–VP9	(On2) VP4-9
RealVideo	RealVideo 1.0–4.0
Theora	Xiph.Org Foundation Theora

Your video stream can probably be decoded even if the format isn't listed above, as we rely on FFmpeg under the hood. Check the FFmpeg documentation for their full list of video decoders.

Audio Decoders

A list of the most common audio formats we can decode:

Name	Description
AAC	Advanced Audio Coding
AAC-HE	High-Efficiency Advanced Audio Coding (AAC+)
AC-3	Dolby Digital
Enhanced AC-3	Dolby Digital Plus
TrueHD	Dolby TrueHD
ADPCM	Adaptive differential pulse-code modulation (many variants)
ALAC	Apple Lossless Audio Codec
DV	DV audio
FLAC	Free Lossless Audio Codec
MP2	MPEG audio layer 2
MP3	MPEG audio layer 3
MPEG-4 ALS	MPEG-4 Audio Lossless Coding
On2 AVC	Audio for Video Codec
PCM	Pulse-code modulation (many variants)
RealAudio	RealAudio 1.0–3.0, Lossless, SIPR / ACELP.NET
AES3	AES/EBU
Vorbis	Ogg Vorbis
WMA	Windows Media Audio 1, 2, Lossless, Pro, Voice

Your audio stream can probably be decoded even if the format isn't listed above, as we rely on FFmpeg under the hood. Check the FFmpeg documentation for their full list of audio decoders.

Output Formats

Containers

Our supported output container formats:

Name	Description
MOV	Apple QuickTime
MXF	Material eXchange Format
MP4	MPEG-4
MTS	MPEG-2 Transport Stream

Video Encoders

Our supported output video formats:

Name	Description
H.264 / AVC	MPEG-4 AVC / MPEG-4 part 10
H.265 / HEVC	High-Efficiency Video Coding
ProRes	Apple ProRes
MPEG-2	MPEG-2 Video
XDCAM	Sony XDCAM (HD422 only)
DNxHD	Avid DNxHD (1080p only)
DNxHR	Avid DNxHR
FFV1	FF video codec 1 (lossless)

Audio Multiplexing

Refer to the input formats table above to see the supported audio codecs. Audio streams are multiplexed (copied “as is”) from the ingested file into the processed media files in most cases.

The audio streams are transcoded to 128 kbps AAC or 16-bit PCM format only if the audio codec of the original media file is incompatible with the chosen container.