# Audio/video formats

The available options can depend on the version of the underlying encoding tools that Transloadit uses for the following Robots:

* [🤖/audio/artwork](/docs/robots/audio-artwork.md)
* [🤖/audio/concat](/docs/robots/audio-concat.md)
* [🤖/audio/split](/docs/robots/audio-split.md)
* [🤖/audio/encode](/docs/robots/audio-encode.md)
* [🤖/audio/loop](/docs/robots/audio-loop.md)
* [🤖/audio/merge](/docs/robots/audio-merge.md)
* [🤖/audio/waveform](/docs/robots/audio-waveform.md)
* [🤖/meta/write](/docs/robots/meta-write.md)
* [🤖/video/adaptive](/docs/robots/video-adaptive.md)
* [🤖/video/artwork](/docs/robots/video-artwork.md)
* [🤖/video/concat](/docs/robots/video-concat.md)
* [🤖/video/encode](/docs/robots/video-encode.md)
* [🤖/video/merge](/docs/robots/video-merge.md)
* [🤖/video/split](/docs/robots/video-split.md)
* [🤖/video/subtitle](/docs/robots/video-subtitle.md)
* [🤖/video/thumbs](/docs/robots/video-thumbs.md)

<span aria-hidden="true" id="try-a-common-video-conversion"></span>

## Try a common video conversion

Test the supported formats in our live [WebM to MP4 converter](/demos/video-encoding/webm-to-mp4.md).

Transloadit recommends having: `ffmpeg_stack: "v7"` 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).

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**ffmpeg\_stack**

|Name|Description|Read|Write|
|-|-|-|-|
|lvf|LVF|Yes|No|
|lxf|VR native stream (LXF)|Yes|No|
|m4v|raw MPEG-4 video|Yes|Yes|
|matroska|Matroska|No|Yes|
|matroska,webm|Matroska / WebM|Yes|No|
|mca|MCA Audio Format|Yes|No|
|mcc|MacCaption|Yes|No|
|md5|MD5 testing|No|Yes|
|mgsts|Metal Gear Solid: The Twin Snakes|Yes|No|
|microdvd|MicroDVD subtitle format|Yes|Yes|
|mjpeg|raw MJPEG video|Yes|Yes|
|mjpeg\_2000|raw MJPEG 2000 video|Yes|No|
|mkvtimestamp\_v2|extract pts as timecode v2 format, as defined by mkvtoolnix|No|Yes|
|mlp|raw MLP|Yes|Yes|
|mlv|Magic Lantern Video (MLV)|Yes|No|
|mm|American Laser Games MM|Yes|No|
|mmf|Yamaha SMAF|Yes|Yes|
|mods|MobiClip MODS|Yes|No|
|moflex|MobiClip MOFLEX|Yes|No|
|mov|QuickTime / MOV|No|Yes|
|mov,mp4,m4a,3gp,3g2,mj2|QuickTime / MOV|Yes|No|
|mp2|MP2 (MPEG audio layer 2)|No|Yes|
|mp3|MP3 (MPEG audio layer 3)|Yes|Yes|
|mp4|MP4 (MPEG-4 Part 14)|No|Yes|
|mpc|Musepack|Yes|No|
|mpc8|Musepack SV8|Yes|No|
|mpeg|MPEG-1 Systems / MPEG program stream|Yes|Yes|
|mpeg1video|raw MPEG-1 video|No|Yes|
|mpeg2video|raw MPEG-2 video|No|Yes|
|mpegts|MPEG-TS (MPEG-2 Transport Stream)|Yes|Yes|
|mpegtsraw|raw MPEG-TS (MPEG-2 Transport Stream)|Yes|No|
|mpegvideo|raw MPEG video|Yes|No|
|mpjpeg|MIME multipart JPEG|Yes|Yes|
|mpl2|MPL2 subtitles|Yes|No|
|mpsub|MPlayer subtitles|Yes|No|
|msf|Sony PS3 MSF|Yes|No|
|msnwctcp|MSN TCP Webcam stream|Yes|No|
|msp|Microsoft Paint (MSP))|Yes|No|
|mtaf|Konami PS2 MTAF|Yes|No|
|mtv|MTV|Yes|No|
|mulaw|PCM mu-law|Yes|Yes|
|musx|Eurocom MUSX|Yes|No|
|mv|Silicon Graphics Movie|Yes|No|
|mvi|Motion Pixels MVI|Yes|No|
|mxf|MXF (Material eXchange Format)|Yes|Yes|
|mxf\_d10|MXF (Material eXchange Format) D-10 Mapping|No|Yes|
|mxf\_opatom|MXF (Material eXchange Format) Operational Pattern Atom|No|Yes|
|mxg|MxPEG clip|Yes|No|
|nc|NC camera feed|Yes|No|
|nistsphere|NIST SPeech HEader REsources|Yes|No|
|nsp|Computerized Speech Lab NSP|Yes|No|
|nsv|Nullsoft Streaming Video|Yes|No|
|null|raw null video|No|Yes|
|nut|NUT|Yes|Yes|
|nuv|NuppelVideo|Yes|No|
|obu|AV1 low overhead OBU|Yes|Yes|
|oga|Ogg Audio|No|Yes|
|ogg|Ogg|Yes|Yes|
|ogv|Ogg Video|No|Yes|
|oma|Sony OpenMG audio|Yes|Yes|
|openal|OpenAL audio capture device|No|No|
|opengl|OpenGL output|No|No|
|opus|Ogg Opus|No|Yes|
|osq|raw OSQ|Yes|No|
|oss|OSS (Open Sound System) playback|No|No|
|paf|Amazing Studio Packed Animation File|Yes|No|
|pam\_pipe|piped pam sequence|Yes|No|
|pbm\_pipe|piped pbm sequence|Yes|No|
|pcx\_pipe|piped pcx sequence|Yes|No|
|pdv|PlayDate Video|Yes|No|
|pfm\_pipe|piped pfm sequence|Yes|No|
|pgm\_pipe|piped pgm sequence|Yes|No|
|pgmyuv\_pipe|piped pgmyuv sequence|Yes|No|
|pgx\_pipe|piped pgx sequence|Yes|No|
|phm\_pipe|piped phm sequence|Yes|No|
|photocd\_pipe|piped photocd sequence|Yes|No|
|pictor\_pipe|piped pictor sequence|Yes|No|
|pjs|PJS (Phoenix Japanimation Society) subtitles|Yes|No|
|pmp|Playstation Portable PMP|Yes|No|
|png\_pipe|piped png sequence|Yes|No|
|pp\_bnk|Pro Pinball Series Soundbank|Yes|No|
|ppm\_pipe|piped ppm sequence|Yes|No|
|psd\_pipe|piped psd sequence|Yes|No|
|psp|PSP MP4 (MPEG-4 Part 14)|No|Yes|
|psxstr|Sony Playstation STR|Yes|No|
|pulse|Pulse audio output|No|No|
|pva|TechnoTrend PVA|Yes|No|
|pvf|PVF (Portable Voice Format)|Yes|No|
|qcp|QCP|Yes|No|
|qdraw\_pipe|piped qdraw sequence|Yes|No|
|qoa|QOA|Yes|No|
|qoi\_pipe|piped qoi sequence|Yes|No|
|r3d|REDCODE R3D|Yes|No|
|rawvideo|raw video|Yes|Yes|
|rcwt|RCWT (Raw Captions With Time)|No|Yes|
|realtext|RealText subtitle format|Yes|No|
|redspark|RedSpark|Yes|No|
|rka|RKA (RK Audio)|Yes|No|
|rl2|RL2|Yes|No|
|rm|RealMedia|Yes|Yes|
|roq|raw id RoQ|Yes|Yes|
|rpl|RPL / ARMovie|Yes|No|
|rsd|GameCube RSD|Yes|No|
|rso|Lego Mindstorms RSO|Yes|Yes|
|rtp|RTP output|Yes|Yes|
|rtp\_mpegts|RTP/mpegts output format|No|Yes|
|rtsp|RTSP output|Yes|Yes|
|s16be|PCM signed 16-bit big-endian|Yes|Yes|
|s16le|PCM signed 16-bit little-endian|Yes|Yes|
|s24be|PCM signed 24-bit big-endian|Yes|Yes|
|s24le|PCM signed 24-bit little-endian|Yes|Yes|
|s32be|PCM signed 32-bit big-endian|Yes|Yes|
|s32le|PCM signed 32-bit little-endian|Yes|Yes|
|s337m|SMPTE 337M|Yes|No|
|s8|PCM signed 8-bit|Yes|Yes|
|sami|SAMI subtitle format|Yes|No|
|sap|SAP output|Yes|Yes|
|sbc|raw SBC|Yes|Yes|
|sbg|SBaGen binaural beats script|Yes|No|
|scc|Scenarist Closed Captions|Yes|Yes|
|scd|Square Enix SCD|Yes|No|
|sdl,sdl2|SDL2 output device|No|No|
|sdns|Xbox SDNS|Yes|No|
|sdp|SDP|Yes|No|
|sdr2|SDR2|Yes|No|
|sds|MIDI Sample Dump Standard|Yes|No|
|sdx|Sample Dump eXchange|Yes|No|
|segment|segment|No|Yes|
|ser|SER (Simple uncompressed video format for astronomical capturing)|Yes|No|
|sga|Digital Pictures SGA|Yes|No|
|sgi\_pipe|piped sgi sequence|Yes|No|
|shn|raw Shorten|Yes|No|
|siff|Beam Software SIFF|Yes|No|
|simbiosis\_imx|Simbiosis Interactive IMX|Yes|No|
|sln|Asterisk raw pcm|Yes|No|
|smjpeg|Loki SDL MJPEG|Yes|Yes|
|smk|Smacker|Yes|No|
|smoothstreaming|Smooth Streaming Muxer|No|Yes|
|smush|LucasArts Smush|Yes|No|
|sol|Sierra SOL|Yes|No|
|sox|SoX native|Yes|Yes|
|spdif|IEC 61937 (used on S/PDIF - IEC958)|Yes|Yes|
|spx|Ogg Speex|No|Yes|
|srt|SubRip subtitle|Yes|Yes|
|stl|Spruce subtitle format|Yes|No|
|stream\_segment,ssegment|streaming segment muxer|No|Yes|
|streamhash|Per-stream hash testing|No|Yes|
|subviewer|SubViewer subtitle format|Yes|No|
|subviewer1|SubViewer v1 subtitle format|Yes|No|
|sunrast\_pipe|piped sunrast sequence|Yes|No|
|sup|raw HDMV Presentation Graphic Stream subtitles|Yes|Yes|
|svag|Konami PS2 SVAG|Yes|No|
|svcd|MPEG-2 PS (SVCD)|No|Yes|
|svg\_pipe|piped svg sequence|Yes|No|
|svs|Square SVS|Yes|No|
|swf|SWF (ShockWave Flash)|Yes|Yes|
|tak|raw TAK|Yes|No|
|tedcaptions|TED Talks captions|Yes|No|
|tee|Multiple muxer tee|No|Yes|
|thp|THP|Yes|No|
|tiertexseq|Tiertex Limited SEQ|Yes|No|
|tiff\_pipe|piped tiff sequence|Yes|No|
|tmv|8088flex TMV|Yes|No|
|truehd|raw TrueHD|Yes|Yes|
|tta|TTA (True Audio)|Yes|Yes|
|ttml|TTML subtitle|No|Yes|
|tty|Tele-typewriter|Yes|No|
|txd|Renderware TeXture Dictionary|Yes|No|
|ty|TiVo TY Stream|Yes|No|
|u16be|PCM unsigned 16-bit big-endian|Yes|Yes|
|u16le|PCM unsigned 16-bit little-endian|Yes|Yes|
|u24be|PCM unsigned 24-bit big-endian|Yes|Yes|
|u24le|PCM unsigned 24-bit little-endian|Yes|Yes|
|u32be|PCM unsigned 32-bit big-endian|Yes|Yes|
|u32le|PCM unsigned 32-bit little-endian|Yes|Yes|
|u8|PCM unsigned 8-bit|Yes|Yes|
|uncodedframecrc|uncoded framecrc testing|No|Yes|
|usm|CRI USM|Yes|No|
|v210|Uncompressed 4:2:2 10-bit|Yes|No|
|v210x|Uncompressed 4:2:2 10-bit|Yes|No|
|vag|Sony PS2 VAG|Yes|No|
|vbn\_pipe|piped vbn sequence|Yes|No|
|vc1|raw VC-1 video|Yes|Yes|
|vc1test|VC-1 test bitstream|Yes|Yes|
|vcd|MPEG-1 Systems / MPEG program stream (VCD)|No|Yes|
|vidc|PCM Archimedes VIDC|Yes|Yes|
|video4linux2,v4l2|Video4Linux2 output device|No|No|
|vividas|Vividas VIV|Yes|No|
|vivo|Vivo|Yes|No|
|vmd|Sierra VMD|Yes|No|
|vob|MPEG-2 PS (VOB)|No|Yes|
|vobsub|VobSub subtitle format|Yes|No|
|voc|Creative Voice|Yes|Yes|
|vpk|Sony PS2 VPK|Yes|No|
|vplayer|VPlayer subtitles|Yes|No|
|vqf|Nippon Telegraph and Telephone Corporation (NTT) TwinVQ|Yes|No|
|vvc|raw H.266/VVC video|Yes|Yes|
|w64|Sony Wave64|Yes|Yes|
|wady|Marble WADY|Yes|No|
|wav|WAV / WAVE (Waveform Audio)|Yes|Yes|