ConvertOnline

Image

Audio

Video

Document

Color

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

{
  "convert": "mpeg-webm",
  "multiple": true,
  "from": "mpeg",
  "to": "webm",
  "controls": [
    {
      "type": "number",
      "optional": true,
      "name": "vframes",
      "label": "Number of Video Frames",
      "range": {
        "min": 1,
        "max": 1000000
      },
      "unit": "frames",
      "desc": "Sets the number of video frames to output. Useful for trimming clips without re-encoding the entire video."
    },
    {
      "type": "dropdown",
      "name": "frame_rate",
      "label": "Frame Rate (fps)",
      "options": [
        {
          "label": "24 fps (Film)",
          "value": 24
        },
        {
          "label": "25 fps (PAL)",
          "value": 25
        },
        {
          "label": "30 fps (NTSC)",
          "value": 30
        },
        {
          "label": "50 fps",
          "value": 50
        },
        {
          "label": "60 fps (High Motion)",
          "value": 60
        }
      ],
      "defaultValue": 30,
      "desc": "Sets the video playback frame rate. Higher rates produce smoother motion but larger file sizes."
    },
    {
      "type": "text",
      "name": "size",
      "label": "Frame Size (WxH)",
      "placeholder": "e.g., 1280x720",
      "desc": "Specifies the output video resolution in width x height format (e.g., 1920x1080). If left blank, the original size is used."
    },
    {
      "type": "dropdown",
      "name": "aspect",
      "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": "Sets the display aspect ratio of the video. Common values are 4:3 for standard definition and 16:9 for widescreen."
    },
    {
      "type": "number",
      "optional": true,
      "name": "bits_per_raw_sample",
      "label": "Bits Per Raw Sample",
      "range": {
        "min": 8,
        "max": 16
      },
      "desc": "Sets the number of bits per raw sample. Useful for controlling raw video quality when applicable."
    },
    {
      "type": "dropdown",
      "name": "vcodec",
      "label": "Video Codec",
      "options": [
        {
          "label": "libvpx (VP8)",
          "value": "libvpx"
        },
        {
          "label": "libvpx-vp9 (VP9 - Better Quality)",
          "value": "libvpx-vp9"
        },
        {
          "label": "copy (No Re-encoding)",
          "value": "copy"
        }
      ],
      "defaultValue": "libvpx-vp9",
      "desc": "Selects the video codec to use. VP9 offers better compression and quality than VP8 but takes longer to encode. 'copy' avoids re-encoding."
    },
    {
      "type": "text",
      "optional": true,
      "name": "timecode",
      "label": "Start Timecode",
      "placeholder": "HH:MM:SS:FF",
      "desc": "Sets the initial SMPTE timecode for the video. Format: hh:mm:ss[:;.]ff"
    },
    {
      "type": "number",
      "optional": true,
      "name": "pass",
      "label": "Encoding Pass Number",
      "range": {
        "min": 1,
        "max": 3
      },
      "defaultValue": 1,
      "desc": "Selects the pass number for multi-pass encoding. Use 2-pass encoding for better quality at the same bitrate."
    },
    {
      "type": "text",
      "optional": true,
      "name": "vf",
      "label": "Video Filters",
      "placeholder": "e.g., scale=1280:720,transpose=1",
      "desc": "Applies one or more video filters. For example, 'scale=1280:720' to resize, 'transpose=1' to rotate."
    },
    {
      "type": "number",
      "optional": true,
      "name": "video_bitrate",
      "label": "Video Bitrate (kbps)",
      "range": {
        "min": 100,
        "max": 50000
      },
      "defaultValue": 2500,
      "desc": "Sets the target video bitrate. Higher values improve quality but increase file size."
    },
    {
      "type": "number",
      "optional": true,
      "name": "audio_bitrate",
      "label": "Audio Bitrate (kbps)",
      "range": {
        "min": 32,
        "max": 320
      },
      "defaultValue": 128,
      "desc": "Sets the output audio bitrate. Higher values improve sound quality at the cost of larger file size."
    }
  ],
  "type": "video"
}