ConvertOnline

Image

Audio

Video

Document

Color

1. Convert Online
2. Video Converters
3. AVI to MKV

{
  "convert": "avi-mkv",
  "multiple": true,
  "from": "avi",
  "to": "mkv",
  "controls": [
    {
      "type": "dropdown",
      "name": "frame_rate",
      "label": "Frame Rate (FPS)",
      "options": [
        {
          "label": "15 FPS (Low)",
          "value": "15"
        },
        {
          "label": "24 FPS (Film Standard)",
          "value": "24"
        },
        {
          "label": "30 FPS (Standard)",
          "value": "30"
        },
        {
          "label": "60 FPS (High Frame Rate)",
          "value": "60"
        }
      ],
      "defaultValue": "30",
      "desc": "Sets the number of video frames per second. A higher frame rate results in smoother playback but larger file sizes."
    },
    {
      "type": "text",
      "name": "resolution",
      "label": "Resolution (Width x Height)",
      "placeholder": "e.g. 1280x720",
      "desc": "Sets the output video resolution. Use standard sizes like 1280x720 or 1920x1080. Leave blank to keep original resolution."
    },
    {
      "type": "dropdown",
      "name": "aspect_ratio",
      "label": "Aspect Ratio",
      "options": [
        {
          "label": "Default (Keep Original)",
          "value": ""
        },
        {
          "label": "4:3 (Standard)",
          "value": "4:3"
        },
        {
          "label": "16:9 (Widescreen)",
          "value": "16:9"
        },
        {
          "label": "1.3333",
          "value": "1.3333"
        },
        {
          "label": "1.7777",
          "value": "1.7777"
        }
      ],
      "defaultValue": "",
      "desc": "Sets the display aspect ratio of the video. Leave as default to preserve the original."
    },
    {
      "type": "dropdown",
      "name": "video_bitrate",
      "label": "Video Bitrate",
      "options": [
        {
          "label": "500 kbps (Low)",
          "value": "500k"
        },
        {
          "label": "1000 kbps (Medium)",
          "value": "1000k"
        },
        {
          "label": "2500 kbps (HD Recommended)",
          "value": "2500k"
        },
        {
          "label": "4000 kbps (High Quality)",
          "value": "4000k"
        }
      ],
      "defaultValue": "2500k",
      "desc": "Sets the average bitrate for the video stream. Higher bitrates improve quality but increase file size."
    },
    {
      "type": "dropdown",
      "name": "audio_bitrate",
      "label": "Audio Bitrate",
      "options": [
        {
          "label": "64 kbps",
          "value": "64k"
        },
        {
          "label": "128 kbps (Standard)",
          "value": "128k"
        },
        {
          "label": "192 kbps",
          "value": "192k"
        },
        {
          "label": "256 kbps",
          "value": "256k"
        }
      ],
      "defaultValue": "128k",
      "desc": "Controls the bitrate for the audio stream in the output MKV. 128 kbps is standard for general use."
    },
    {
      "type": "number",
      "optional": true,
      "name": "max_frames",
      "label": "Limit Frames (Optional)",
      "range": {
        "min": 1,
        "max": 100000
      },
      "desc": "Optionally limit the output to a maximum number of video frames. Useful for previews or trimming."
    },
    {
      "type": "text",
      "optional": true,
      "name": "timecode",
      "label": "Start Timecode",
      "placeholder": "e.g. 00:00:00:00",
      "desc": "Set an initial timecode value for the output video. Format: HH:MM:SS[:;.]FF. This is optional."
    }
  ],
  "type": "video"
}