ConvertOnline

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1. Convert Online
2. Audio Converters
3. FLAC to M4R

{
  "convert": "flac-m4r",
  "multiple": true,
  "from": "flac",
  "to": "m4r",
  "note": "M4R is the iPhone ringtone format. iOS devices typically require M4R files to be less than 40 seconds long. Converting from FLAC (lossless) to M4R (compressed AAC) will reduce file size and may slightly reduce quality.",
  "controls": [
    {
      "type": "dropdown",
      "name": "bitrate",
      "label": "Audio Bitrate",
      "options": [
        {
          "label": "64 kbps",
          "value": "64k"
        },
        {
          "label": "96 kbps",
          "value": "96k"
        },
        {
          "label": "128 kbps (Standard)",
          "value": "128k"
        },
        {
          "label": "192 kbps",
          "value": "192k"
        },
        {
          "label": "256 kbps",
          "value": "256k"
        }
      ],
      "defaultValue": "128k",
      "desc": "Sets the bitrate for the M4R output. Lower bitrates reduce file size; higher bitrates offer better quality but may exceed the ringtone size limit."
    },
    {
      "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 provides richer sound but increases file size."
    },
    {
      "type": "dropdown",
      "name": "sample_rate",
      "label": "Sample Rate (Hz)",
      "options": [
        {
          "label": "22050 Hz",
          "value": 22050
        },
        {
          "label": "44100 Hz (CD Quality)",
          "value": 44100
        },
        {
          "label": "48000 Hz",
          "value": 48000
        }
      ],
      "defaultValue": 44100,
      "desc": "Specifies the sample rate. 44100 Hz is standard and compatible with iPhone ringtones."
    },
    {
      "type": "number",
      "name": "duration_limit",
      "label": "Max Duration (seconds)",
      "range": {
        "min": 1,
        "max": 40
      },
      "defaultValue": 30,
      "unit": "s",
      "desc": "Trim the output ringtone to a maximum length in seconds. iOS requires M4R files to be under 40 seconds for ringtone use."
    }
  ],
  "type": "audio"
}