Fix: removed deprecated MP4V-ES support

[Bemly]

Description

Update the content, removed deprecated MP4V-ES support.

Motivation

mp4v always deprecated

i convert the MP4V-ES video encode file for 3GP container using ffmpeg according to the documentation.

> ffmpeg -i input.mp4 -c:v mpeg4 -vtag mp4v-es -an -f 3gp output.3gp | ffprobe output.3gp
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.3gp':
  Metadata:
    major_brand     : 3gp4
    minor_version   : 512
    compatible_brands: 3gp4isomiso2
  Duration: 00:03:36.50, start: 0.000000, bitrate: 316 kb/s
  Stream #0:0[0x1](und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 315 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
      Metadata:
        handler_name    : ISO Media file produced by Google Inc. Created on: 01/22/2024.
        vendor_id       : [0][0][0][0]

but, when I test this file on webpage, Firefox can't recognize the MIME format or report an error

Error Code: NS_ERROR_DOM_MEDIA_DEMUXER_ERR (0x806e000c)
Details: virtual RefPtr<MP4Demuxer::InitPromise> mozilla::MP4Demuxer::Init(): No MP4 audio () or video () tracks

i have used a variety of containers one after another,

its still cant decoder video file on this webpage.

then i use HTMLMediaElement.canPlayType and MediaSource.isTypeSupported method test,

fenix(mobile) and firefox desktop not support.

Theora default deprecated version

Theora encoder will be officially deprecated on Firefox 130 Release version,

and have been deprecated on Firefox 130.0b1 Beta version.

about:support > media > Codec Support Information > Codec Name

< 129: exist Theora, about:config > media.theora.enabled default TRUE.

= 130: not exist Theora, not exist media.theora.enabled, and decode theora format video failed.

Additional details

1.MP4 part 2 always unsupported:

https://bugzilla.mozilla.org/show_bug.cgi?id=1427278

2.MediaSource.isTypeSupported Checker website:

https://cconcolato.github.io/media-mime-support

3. Theora have been deprecated on Firefox version download:

https://ftp.mozilla.org/pub/fenix/releases/130.0b1/

[github-actions[bot]]

Preview URLs

• /en-US/docs/Web/Media/Formats/Video_codecs

(comment last updated: 2024-09-30 06:46:35)

[hamishwillee]

I'm asking about support for the MP4v format in https://bugzilla.mozilla.org/show_bug.cgi?id=1427278#c5 - it seems likely that you're right, but want to be sure.

[hamishwillee]

@Bemly Thanks, but I'm reopening until I can confirm the part around MP4V

[hamishwillee]

I'm closing again thanks. No response from engineering in linked issue. If they do response we can reopen.