1988450 - Firefox doesn't decode or play Opus in Matroska container in HTMLAudioElement

Status: RESOLVED DUPLICATE of bug 1988848

(Core :: Audio/Video: Playback, defect)

Description

[guest271314]

Attachment: test_matroska_audio.mkv

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Steps to reproduce:

<script type="module">
  var mediaElement = document.createElement("audio");
  mediaElement.controls = true;
  mediaElement.autoplay = true;
  document.body.appendChild(mediaElement);
  fetch("./test_matroska_audio.mkv")
    .then((response) => {
      console.log(response.headers.get("Content-Type"));
      return response.blob();
    })
    .then((blob) => {
      console.log(blob);
      mediaElement.src = URL.createObjectURL(blob);
    });
</script>

Container and codec

mkvmerge -J test_matroska_audio.mkv
{
  "attachments": [],
  "chapters": [],
  "container": {
    "properties": {
      "container_type": 17,
      "date_local": "2021-09-01T02:02:08+00:00",
      "date_utc": "2021-09-01T02:02:08Z",
      "duration": 1576366000,
      "is_providing_timestamps": true,
      "muxing_application": "libebml v1.4.2 + libmatroska v1.6.4",
      "segment_uid": "ca43ba11aa2c341b485157613d6db376",
      "writing_application": "mkvmerge v60.0.0 ('Are We Copies?') 64-bit"
    },
    "recognized": true,
    "supported": true,
    "type": "Matroska"
  },
  "errors": [],
  "file_name": "test_matroska_audio.mkv",
  "global_tags": [],
  "identification_format_version": 17,
  "track_tags": [
    {
      "num_entries": 1,
      "track_id": 0
    }
  ],
  "tracks": [
    {
      "codec": "Opus",
      "id": 0,
      "properties": {
        "audio_channels": 1,
        "audio_sampling_frequency": 22050,
        "codec_delay": 6500000,
        "codec_id": "A_OPUS",
        "codec_private_data": "4f707573486561640101380122560000000000",
        "codec_private_length": 19,
        "default_track": true,
        "enabled_track": true,
        "forced_track": false,
        "language": "und",
        "language_ietf": "und",
        "minimum_timestamp": 0,
        "number": 1,
        "tag_encoder": "opusenc from opus-tools 0.1.10",
        "uid": 8497742985796830241
      },
      "type": "audio"
    }
  ],
  "warnings": []
}

Actual results:

Media resource blob:null/10d4eac9-db9d-4604-bd84-0b03b38360ce could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_METADATA_ERR (0x806e0006)

Expected results:

Playback of Opus in Matroska container by HTMLAudioElement.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Alastor Wu [:alwu]]

This is already in our plan, we started supporting AVC and AAC first, and will add more codec support later.

Comment 3

[Alastor Wu [:alwu]]

In addition, if you would like to discuss MKV MSE support, please see bug 1988447.

Comment 4

[Masatoshi Kimura [:emk]]

Fixed by bug 1988848.