ConvertOnline

Image

Audio

Video

Document

Color

1. Convert Online
2. Audio Converters
3. OPUS to AMR

{
  "convert": "opus-amr",
  "multiple": true,
  "from": "opus",
  "to": "amr",
  "note": "AMR is a legacy telephony format used in mobile voice calls. It only supports mono (1 channel) audio and a fixed sample rate of 8000 Hz. Bitrate is not user-configurable. Use this conversion only for compatibility with telephony systems.",
  "controls": [
    {
      "type": "dropdown",
      "name": "sample_rate",
      "label": "Sample Rate",
      "options": [
        {
          "label": "8000 Hz (Required)",
          "value": 8000
        }
      ],
      "defaultValue": 8000,
      "desc": "AMR only supports 8000 Hz sample rate for narrowband encoding. This ensures compatibility with standard telephony systems."
    },
    {
      "type": "dropdown",
      "name": "channels",
      "label": "Audio Channels",
      "options": [
        {
          "label": "Mono (1 channel)",
          "value": 1
        }
      ],
      "defaultValue": 1,
      "desc": "AMR only supports mono audio. Stereo input will be downmixed automatically."
    }
  ],
  "type": "audio"
}