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Audio codecs

The particular set of Audio Codecs that you can use can depend on the version of the underlying encoding tools that Transloadit uses for the following Robots:

Transloadit recommends having: ffmpeg_stack: "v6.0.0" in these Robots' Assembly Instructions. We are intimately aware of how important continuity is for our customers, so stack version upgrades are always opt-in. Stack versions are typically supported for many years before we start issuing deprecation warnings (for example: we had been supporting "v1.0.0" for 11 years before we deprecated it).

Name Description ffmpeg_stack
Name Description
"v5.0.0" "v6.0.0"
read write read write
4gv 4GV (Fourth Generation Vocoder) X X
8svx_exp 8SVX exponential R X
8svx_fib 8SVX fibonacci R X
aac AAC (Advanced Audio Coding) (decoders: aac aac_fixed libfdk_aac ) (encoders: aac libfdk_aac ) R W
aac_latm AAC LATM (Advanced Audio Coding LATM syntax) R X
ac3 ATSC A/52A (AC-3) (decoders: ac3 ac3_fixed ) (encoders: ac3 ac3_fixed ) R W
acelp.kelvin Sipro ACELP.KELVIN R X
adpcm_4xm ADPCM 4X Movie R X
adpcm_afc ADPCM Nintendo Gamecube AFC R X
adpcm_agm ADPCM AmuseGraphics Movie AGM R X
adpcm_aica ADPCM Yamaha AICA R X
adpcm_argo ADPCM Argonaut Games R W
adpcm_ct ADPCM Creative Technology R X
adpcm_dtk ADPCM Nintendo Gamecube DTK R X
adpcm_ea ADPCM Electronic Arts R X
adpcm_ea_maxis_xa ADPCM Electronic Arts Maxis CDROM XA R X
adpcm_ea_r1 ADPCM Electronic Arts R1 R X
adpcm_ea_r2 ADPCM Electronic Arts R2 R X
adpcm_ea_r3 ADPCM Electronic Arts R3 R X
adpcm_ea_xas ADPCM Electronic Arts XAS R X
adpcm_g722 G.722 ADPCM (decoders: g722 ) (encoders: g722 ) R W
adpcm_g726 G.726 ADPCM (decoders: g726 ) (encoders: g726 ) R W
adpcm_g726le G.726 ADPCM little-endian (decoders: g726le ) (encoders: g726le ) R W
adpcm_ima_acorn ADPCM IMA Acorn Replay R X
adpcm_ima_alp ADPCM IMA High Voltage Software ALP R W
adpcm_ima_amv ADPCM IMA AMV R W
adpcm_ima_apc ADPCM IMA CRYO APC R X
adpcm_ima_apm ADPCM IMA Ubisoft APM R W
adpcm_ima_cunning ADPCM IMA Cunning Developments R X
adpcm_ima_dat4 ADPCM IMA Eurocom DAT4 R X
adpcm_ima_dk3 ADPCM IMA Duck DK3 R X
adpcm_ima_dk4 ADPCM IMA Duck DK4 R X
adpcm_ima_ea_eacs ADPCM IMA Electronic Arts EACS R X
adpcm_ima_ea_sead ADPCM IMA Electronic Arts SEAD R X
adpcm_ima_iss ADPCM IMA Funcom ISS R X
adpcm_ima_moflex ADPCM IMA MobiClip MOFLEX R X
adpcm_ima_mtf ADPCM IMA Capcom's MT Framework R X
adpcm_ima_oki ADPCM IMA Dialogic OKI R X
adpcm_ima_qt ADPCM IMA QuickTime R W
adpcm_ima_rad ADPCM IMA Radical R X
adpcm_ima_smjpeg ADPCM IMA Loki SDL MJPEG R X
adpcm_ima_ssi ADPCM IMA Simon & Schuster Interactive R W
adpcm_ima_wav ADPCM IMA WAV R W
adpcm_ima_ws ADPCM IMA Westwood R W
adpcm_ms ADPCM Microsoft R W
adpcm_mtaf ADPCM MTAF R X
adpcm_psx ADPCM Playstation R X
adpcm_sbpro_2 ADPCM Sound Blaster Pro 2-bit R X
adpcm_sbpro_3 ADPCM Sound Blaster Pro 2.6-bit R X
adpcm_sbpro_4 ADPCM Sound Blaster Pro 4-bit R X
adpcm_swf ADPCM Shockwave Flash R W
adpcm_thp ADPCM Nintendo THP R X
adpcm_thp_le ADPCM Nintendo THP (Little-Endian) R X
adpcm_vima LucasArts VIMA audio R X
adpcm_xmd ADPCM Konami XMD X X
adpcm_yamaha ADPCM Yamaha R W
adpcm_zork ADPCM Zork R X
alac ALAC (Apple Lossless Audio Codec) R W
amr_nb AMR-NB (Adaptive Multi-Rate NarrowBand) (decoders: amrnb libopencore_amrnb ) (encoders: libopencore_amrnb ) R W
amr_wb AMR-WB (Adaptive Multi-Rate WideBand) (decoders: amrwb ) (encoders: libvo_amrwbenc ) R W
anull Null audio codec X X
apac Marian's A-pac audio X X
ape Monkey's Audio R X
aptx aptX (Audio Processing Technology for Bluetooth) R W
aptx_hd aptX HD (Audio Processing Technology for Bluetooth) R W
atrac1 ATRAC1 (Adaptive TRansform Acoustic Coding) R X
atrac3 ATRAC3 (Adaptive TRansform Acoustic Coding 3) R X
atrac3al ATRAC3 AL (Adaptive TRansform Acoustic Coding 3 Advanced Lossless) R X
atrac3p ATRAC3+ (Adaptive TRansform Acoustic Coding 3+) (decoders: atrac3plus ) R X
atrac3pal ATRAC3+ AL (Adaptive TRansform Acoustic Coding 3+ Advanced Lossless) (decoders: atrac3plusal ) R X
atrac9 ATRAC9 (Adaptive TRansform Acoustic Coding 9) R X
avc On2 Audio for Video Codec (decoders: on2avc ) R X
binkaudio_dct Bink Audio (DCT) R X
binkaudio_rdft Bink Audio (RDFT) R X
bmv_audio Discworld II BMV audio R X
bonk Bonk audio X X
cbd2_dpcm DPCM Cuberoot-Delta-Exact X X
celt Constrained Energy Lapped Transform (CELT) (decoders: libcelt ) R X
codec2 codec2 (very low bitrate speech codec) X X
comfortnoise RFC 3389 Comfort Noise R W
cook Cook / Cooker / Gecko (RealAudio G2) R X
derf_dpcm DPCM Xilam DERF R X
dfpwm DFPWM (Dynamic Filter Pulse Width Modulation) X X
dolby_e Dolby E R X
dsd_lsbf DSD (Direct Stream Digital), least significant bit first R X
dsd_lsbf_planar DSD (Direct Stream Digital), least significant bit first, planar R X
dsd_msbf DSD (Direct Stream Digital), most significant bit first R X
dsd_msbf_planar DSD (Direct Stream Digital), most significant bit first, planar R X
dsicinaudio Delphine Software International CIN audio R X
dss_sp Digital Speech Standard - Standard Play mode (DSS SP) R X
dst DST (Direct Stream Transfer) R X
dts DCA (DTS Coherent Acoustics) (decoders: dca ) (encoders: dca ) R W
dvaudio DV audio R X
eac3 ATSC A/52B (AC-3, E-AC-3) R W
evrc EVRC (Enhanced Variable Rate Codec) R X
fastaudio MobiClip FastAudio R X
flac FLAC (Free Lossless Audio Codec) R W
ftr FTR Voice X X
g723_1 G.723.1 R W
g729 G.729 R X
gremlin_dpcm DPCM Gremlin R X
gsm GSM (decoders: gsm libgsm ) (encoders: libgsm ) R W
gsm_ms GSM Microsoft variant (decoders: gsm_ms libgsm_ms ) (encoders: libgsm_ms ) R W
hcom HCOM Audio R X
iac IAC (Indeo Audio Coder) R X
ilbc iLBC (Internet Low Bitrate Codec) R X
imc IMC (Intel Music Coder) R X
interplay_dpcm DPCM Interplay R X
interplayacm Interplay ACM R X
mace3 MACE (Macintosh Audio Compression/Expansion) 3:1 R X
mace6 MACE (Macintosh Audio Compression/Expansion) 6:1 R X
metasound Voxware MetaSound R X
misc4 Micronas SC-4 Audio X X
mlp MLP (Meridian Lossless Packing) R W
mp1 MP1 (MPEG audio layer 1) (decoders: mp1 mp1float ) R X
mp2 MP2 (MPEG audio layer 2) (decoders: mp2 mp2float ) (encoders: mp2 mp2fixed ) R W
mp3 MP3 (MPEG audio layer 3) (decoders: mp3float mp3 ) (encoders: libmp3lame ) R W
mp3adu ADU (Application Data Unit) MP3 (MPEG audio layer 3) (decoders: mp3adufloat mp3adu ) R X
mp3on4 MP3onMP4 (decoders: mp3on4float mp3on4 ) R X
mp4als MPEG-4 Audio Lossless Coding (ALS) (decoders: als ) R X
mpegh_3d_audio MPEG-H 3D Audio X X
msnsiren MSN Siren R X
musepack7 Musepack SV7 (decoders: mpc7 ) R X
musepack8 Musepack SV8 (decoders: mpc8 ) R X
nellymoser Nellymoser Asao R W
opus Opus (Opus Interactive Audio Codec) (decoders: opus libopus ) (encoders: opus libopus ) R W
paf_audio Amazing Studio Packed Animation File Audio R X
pcm_alaw PCM A-law / G.711 A-law R W
pcm_bluray PCM signed 16|20|24-bit big-endian for Blu-ray media R X
pcm_dvd PCM signed 20|24-bit big-endian R W
pcm_f16le PCM 16.8 floating point little-endian R X
pcm_f24le PCM 24.0 floating point little-endian R X
pcm_f32be PCM 32-bit floating point big-endian R W
pcm_f32le PCM 32-bit floating point little-endian R W
pcm_f64be PCM 64-bit floating point big-endian R W
pcm_f64le PCM 64-bit floating point little-endian R W
pcm_lxf PCM signed 20-bit little-endian planar R X
pcm_mulaw PCM mu-law / G.711 mu-law R W
pcm_s16be PCM signed 16-bit big-endian R W
pcm_s16be_planar PCM signed 16-bit big-endian planar R W
pcm_s16le PCM signed 16-bit little-endian R W
pcm_s16le_planar PCM signed 16-bit little-endian planar R W
pcm_s24be PCM signed 24-bit big-endian R W
pcm_s24daud PCM D-Cinema audio signed 24-bit R W
pcm_s24le PCM signed 24-bit little-endian R W
pcm_s24le_planar PCM signed 24-bit little-endian planar R W
pcm_s32be PCM signed 32-bit big-endian R W
pcm_s32le PCM signed 32-bit little-endian R W
pcm_s32le_planar PCM signed 32-bit little-endian planar R W
pcm_s64be PCM signed 64-bit big-endian R W
pcm_s64le PCM signed 64-bit little-endian R W
pcm_s8 PCM signed 8-bit R W
pcm_s8_planar PCM signed 8-bit planar R W
pcm_sga PCM SGA R X
pcm_u16be PCM unsigned 16-bit big-endian R W
pcm_u16le PCM unsigned 16-bit little-endian R W
pcm_u24be PCM unsigned 24-bit big-endian R W
pcm_u24le PCM unsigned 24-bit little-endian R W
pcm_u32be PCM unsigned 32-bit big-endian R W
pcm_u32le PCM unsigned 32-bit little-endian R W
pcm_u8 PCM unsigned 8-bit R W
pcm_vidc PCM Archimedes VIDC R W
qcelp QCELP / PureVoice R X
qdm2 QDesign Music Codec 2 R X
qdmc QDesign Music R X
ra_144 RealAudio 1.0 (14.4K) (decoders: real_144 ) (encoders: real_144 ) R W
ra_288 RealAudio 2.0 (28.8K) (decoders: real_288 ) R X
ralf RealAudio Lossless R X
rka RKA (RK Audio) X X
roq_dpcm DPCM id RoQ R W
s302m SMPTE 302M R W
sbc SBC (low-complexity subband codec) R W
sdx2_dpcm DPCM Squareroot-Delta-Exact R X
shorten Shorten R X
sipr RealAudio SIPR / ACELP.NET R X
siren Siren R X
smackaudio Smacker audio (decoders: smackaud ) R X
smv SMV (Selectable Mode Vocoder) X X
sol_dpcm DPCM Sol R X
sonic Sonic R W
sonicls Sonic lossless X W
speex Speex (decoders: speex libspeex ) (encoders: libspeex ) R W
tak TAK (Tom's lossless Audio Kompressor) R X
truehd TrueHD R W
truespeech DSP Group TrueSpeech R X
tta TTA (True Audio) R W
twinvq VQF TwinVQ R X
vmdaudio Sierra VMD audio R X
vorbis Vorbis (decoders: vorbis libvorbis ) (encoders: vorbis libvorbis ) R W
wady_dpcm DPCM Marble WADY X X
wavarc Waveform Archiver X X
wavesynth Wave synthesis pseudo-codec R X
wavpack WavPack R W
westwood_snd1 Westwood Audio (SND1) (decoders: ws_snd1 ) R X
wmalossless Windows Media Audio Lossless R X
wmapro Windows Media Audio 9 Professional R X
wmav1 Windows Media Audio 1 R W
wmav2 Windows Media Audio 2 R W
wmavoice Windows Media Audio Voice R X
xan_dpcm DPCM Xan R X
xma1 Xbox Media Audio 1 R X
xma2 Xbox Media Audio 2 R X