Video Format

We currently have the best support for MPEG-4 (Part 14) format. We recommend using this format to upload video files. Often these files have .mov or .mp4 extensions.

Audio

We re-encode every uploaded audio file to MP3. If you'd like to keep the highest possible quality we recommend uploading in MP3, as these files just pass-through (meaning, we won't reconvert them.)

Some transcoder components, such as the video mixer will resample every incoming audio track (and audio file or an audio stream in a video) to 44100Hz. We recommend using this sampling rate as resampling audiotracks could result in quality degredation.

Currently the transcoder only works with 2 channels (stereo). We recommend avoiding audio streams with more channels (5.1 for example). Files with a mono audiostream will be converted to joint-stereo for most output formats.