.mp3. The AssemblyAI API converts all files to 16khz uncompressed audio as part of our transcription pipeline.
Note that when you upload a video to our API, the audio will be extracted from it and processed independently, so the list of supported video formats isn’t exhaustive.
| Supported audio file types | Supported video file types |
|---|---|
| .3ga | .webm |
| .8svx | .mts, .m2ts, .ts |
| .aac | .mov |
| .ac3 | .mp2 |
| .aif | .mp4, .m4p (with DRM), .m4v |
| .aiff | .mxf |
| .alac | |
| .amr | |
| .ape | |
| .au | |
| .dss | |
| .flac | |
| .flv | |
| .m4a | |
| .m4b | |
| .m4p | |
| .m4r | |
| .mp3 | |
| .mpga | |
| .ogg, .oga, .mogg | |
| .opus | |
| .qcp | |
| .tta | |
| .voc | |
| .wav | |
| .wma | |
| .wv |