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mkvdump

A command-line tool for debugging Matroska/WebM files in common formats.

$ mkvdump --help
mkvdump 0.3.1
Carlos Bentzen <cadubentzen@gmail.com>
MKV and WebM parser CLI tool

USAGE:
    mkvdump [OPTIONS] <FILENAME>

ARGS:
    <FILENAME>    Name of the MKV/WebM file to be parsed

OPTIONS:
    -f, --format <FORMAT>           Output format [default: yaml] [possible values: json, yaml]
    -h, --help                      Print help information
    -l, --linear-output             Show output as a sequence, rather than a tree
    -p, --show-element-positions    Add element positions in the output
    -V, --version                   Print version information

Sample output:

# mkvdump sample.mkv
- id: EBML
  header_size: 5
  size: 36
  children:
  - id: EBMLVersion
    header_size: 3
    size: 4
    value: 1
  - id: EBMLReadVersion
    header_size: 3
    size: 4
    value: 1
  - id: EBMLMaxIDLength
    header_size: 3
    size: 4
    value: 4
  - id: EBMLMaxSizeLength
    header_size: 3
    size: 4
    value: 8
  - id: DocType
    header_size: 3
    size: 7
    value: webm
  - id: DocTypeVersion
    header_size: 3
    size: 4
    value: 2
  - id: DocTypeReadVersion
    header_size: 3
    size: 4
    value: 2
- id: Segment
  header_size: 12
  size: Unknown
  children:
  - id: Void
    header_size: 9
    size: 229
    value: null
  - id: Info
    header_size: 5
    size: 44
    children:
    - id: TimestampScale
      header_size: 4
      size: 7
      value: 1000000
    - id: MuxingApp
      header_size: 3
      size: 16
      value: Lavf58.29.100
    - id: WritingApp
      header_size: 3
      size: 16
      value: Lavf58.29.100
  - id: Tracks
    header_size: 5
    size: 101
    children:
    - id: TrackEntry
      header_size: 9
      size: 96
      children:
      - id: TrackNumber
        header_size: 2
        size: 3
        value: 1
      - id: TrackUID
        header_size: 3
        size: 4
        value: 1
      - id: FlagLacing
        header_size: 2
        size: 3
        value: 0
      - id: Language
        header_size: 4
        size: 7
        value: und
      - id: CodecID
        header_size: 2
        size: 7
        value: V_AV1
      - id: TrackType
        header_size: 2
        size: 3
        value: video
      - id: DefaultDuration
        header_size: 4
        size: 8
        value: 41708333
      - id: Video
        header_size: 9
        size: 32
        children:
        - id: PixelWidth
          header_size: 2
          size: 4
          value: 1280
        - id: PixelHeight
          header_size: 2
          size: 4
          value: 720
        - id: Colour
          header_size: 3
          size: 15
          children:
          - id: Range
            header_size: 3
            size: 4
            value: broadcast range
          - id: ChromaSitingHorz
            header_size: 3
            size: 4
            value: left collocated
          - id: ChromaSitingVert
            header_size: 3
            size: 4
            value: half
      - id: CodecPrivate
        header_size: 3
        size: 20
        value: '[81 05 0c 00 0a 0b 00 00 00 2d 4c ff b3 df ff 98 04]'
  - id: Tags
    header_size: 5
    size: 61
    children:
    - id: Tag
      header_size: 10
      size: 56
      children:
      - id: Targets
        header_size: 10
        size: 10
        children: []
      - id: SimpleTag
        header_size: 10
        size: 36
        children:
        - id: TagName
          header_size: 3
          size: 10
          value: ENCODER
        - id: TagString
          header_size: 3
          size: 16
          value: Lavf58.29.100
  - id: Cluster
    header_size: 6
    size: 2679
    children:
    - id: Timestamp
      header_size: 2
      size: 3
      value: 0
    - id: SimpleBlock
      header_size: 2
      size: 45
      value:
        track_number: 1
        timestamp: 0
        keyframe: true
    - id: SimpleBlock
      header_size: 2
      size: 59
      value:
        track_number: 1
        timestamp: 42
    - id: SimpleBlock
      header_size: 2
      size: 32
      value:
        track_number: 1
        timestamp: 83
    # ...

Getting mkvdump

Cargo

If you have cargo installed, you can install mkvdump from crates.io with:

$ cargo install mkvdump

Docker

To pull latest mkvdump from Dockerhub:

$ docker pull cadubentzen/mkvdump

Images are available for linux/amd64 and linux/arm64. Need a new architecture? PRs are welcome!

Running the container

Asssuming a Mastroska file in the host located in /host-path/sample.mkv. You could run mkvdump on it with the following command, by mounting a volume:

$ docker run -v /host-path:/media cadubentzen/mkvdump /media/sample.mkv

Prebuilt binaries

Download prebuilt binaries for Linux on x86_64 and aarch64 from the release page.

Download it somewhere accessible in your PATH and make it runnable:

$ sudo curl -L https://github.com/cadubentzen/mkvdump/releases/download/v0.3.1/mkvdump-linux-x86_64 -o /usr/local/bin/mkvdump
$ sudo chmod +x /usr/local/bin/mkvdump

License

This project is licensed under either of

at your option.

The SPDX license identifier for this project is MIT OR Apache-2.0.