ConvertOnline

Image

Audio

Video

Document

Color

1. Convert Online
2. Audio Converters
3. M4A to OPUS

{
  "convert": "m4a-opus",
  "multiple": true,
  "from": "m4a",
  "to": "opus",
  "note": "Opus is optimized for speech and streaming audio. It offers excellent quality at low bitrates, making it ideal for web and mobile use. Converting from M4A to Opus is lossy and may result in slight quality loss.",
  "controls": [
    {
      "type": "dropdown",
      "name": "bitrate",
      "label": "Audio Bitrate",
      "options": [
        {
          "label": "32 kbps (Low)",
          "value": "32k"
        },
        {
          "label": "64 kbps",
          "value": "64k"
        },
        {
          "label": "96 kbps",
          "value": "96k"
        },
        {
          "label": "128 kbps (Standard)",
          "value": "128k"
        },
        {
          "label": "160 kbps",
          "value": "160k"
        },
        {
          "label": "192 kbps",
          "value": "192k"
        }
      ],
      "defaultValue": "128k",
      "desc": "Sets the target bitrate for Opus encoding. Opus performs well even at lower bitrates like 64k, but 128k is a good balance for general use."
    },
    {
      "type": "dropdown",
      "name": "channels",
      "label": "Audio Channels",
      "options": [
        {
          "label": "Mono (1 channel)",
          "value": 1
        },
        {
          "label": "Stereo (2 channels)",
          "value": 2
        }
      ],
      "defaultValue": 2,
      "desc": "Sets the number of audio channels. Stereo is recommended for music; mono is more efficient for voice recordings."
    },
    {
      "type": "dropdown",
      "name": "sample_rate",
      "label": "Sample Rate (Hz)",
      "options": [
        {
          "label": "16000 Hz",
          "value": 16000
        },
        {
          "label": "24000 Hz",
          "value": 24000
        },
        {
          "label": "48000 Hz (Default)",
          "value": 48000
        }
      ],
      "defaultValue": 48000,
      "desc": "Sets the sample rate for Opus audio. Opus natively uses 48 kHz, but lower rates can be used for speech or lower quality output."
    }
  ],
  "type": "audio"
}