ConvertOnline

Image

Audio

Video

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Color

1. Convert Online
2. Video Converters
3. WEBM to M4V

{
  "convert": "webm-m4v",
  "multiple": true,
  "from": "webm",
  "to": "m4v",
  "controls": [
    {
      "type": "dropdown",
      "name": "frame_rate",
      "label": "Frame Rate (fps)",
      "options": [
        {
          "label": "15 fps",
          "value": "15"
        },
        {
          "label": "24 fps (Film)",
          "value": "24"
        },
        {
          "label": "30 fps (Standard)",
          "value": "30"
        },
        {
          "label": "60 fps (Smooth)",
          "value": "60"
        }
      ],
      "defaultValue": "30",
      "desc": "Specifies the output video frame rate. A higher frame rate provides smoother video but increases file size."
    },
    {
      "type": "text",
      "name": "resolution",
      "label": "Resolution (WxH)",
      "placeholder": "e.g. 1280x720",
      "desc": "Sets the width and height of the output video. Use standard sizes like 1280x720 or 1920x1080. Leave blank to keep original resolution."
    },
    {
      "type": "dropdown",
      "name": "aspect_ratio",
      "label": "Aspect Ratio",
      "options": [
        {
          "label": "4:3",
          "value": "4:3"
        },
        {
          "label": "16:9",
          "value": "16:9"
        },
        {
          "label": "1.3333",
          "value": "1.3333"
        },
        {
          "label": "1.7777",
          "value": "1.7777"
        }
      ],
      "defaultValue": "16:9",
      "desc": "Specifies the display aspect ratio of the video. Common ratios are 4:3 for square videos and 16:9 for widescreen."
    },
    {
      "type": "dropdown",
      "name": "video_bitrate",
      "label": "Video Bitrate",
      "options": [
        {
          "label": "500 kbps (Low)",
          "value": "500k"
        },
        {
          "label": "1000 kbps (Standard)",
          "value": "1000k"
        },
        {
          "label": "2000 kbps",
          "value": "2000k"
        },
        {
          "label": "4000 kbps (High)",
          "value": "4000k"
        }
      ],
      "defaultValue": "1000k",
      "desc": "Controls the output video bitrate. Higher bitrate increases quality and file size."
    },
    {
      "type": "dropdown",
      "name": "video_codec",
      "label": "Video Codec",
      "options": [
        {
          "label": "H.264 (libx264)",
          "value": "libx264"
        },
        {
          "label": "H.265 (libx265)",
          "value": "libx265"
        },
        {
          "label": "Copy Original",
          "value": "copy"
        }
      ],
      "defaultValue": "libx264",
      "desc": "Specifies the video codec to use. Use 'copy' to avoid re-encoding and preserve original quality if compatible."
    }
  ],
  "note": "The M4V format typically uses H.264 or H.265 codecs. If copying the video stream, ensure the original WebM codec is compatible with the M4V container. You may also leave the resolution field blank to maintain the original size. The bitrate, frame rate, and codec selection allow you to balance quality and file size.",
  "type": "video"
}