1786925 - Firefox fails to parse metadata for a Twitter video; other browsers seem ok with it.

Status: RESOLVED WORKSFORME

(Core :: Audio/Video: Playback, defect, P3)

Description

[Thomas Wisniewski [:twisniewski]]

As per the diagnosis at https://webcompat.com/issues/109531, the video on this Twitter page fails to play (Firefox never fires the DOM "canplay" event). Visiting one of the m4s segments in the URL bar (https://video.twimg.com/ext_tw_video/1561387689714360325/pu/vid/0/3000/1280x720/m9egtoJx37B-VFnG.m4s), I see this in the web console:

Media resource https://video.twimg.com/ext_tw_video/1561387689714360325/pu/vid/0/3000/1280x720/m9egtoJx37B-VFnG.m4s could not be decoded, error: Error Code: NS_ERROR_DOM_MEDIA_METADATA_ERR (0x806e0006)
Details: static MP4Metadata::ResultAndByteBuffer mozilla::MP4Metadata::Metadata(mozilla::ByteStream *): Cannot parse metadata

This is happening for me on Linux and OSX, and the user reported that it wasn't playing on Windows 10 for them as well.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

FWIW Chrome on Linux doesn't play it either...

Comment 2

[Thomas Wisniewski [:twisniewski]]

Interesting, Chrome was playing it on my Gentoo Linux box while was diagnosing to compare browser behavior.

Comment 3

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

The severity field is not set for this bug.
:jimm, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 4

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

The severity field is not set for this bug.
:jimm, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 5

[James Graham [:jgraham]]

This video seems to play for me now. Setting the webcompat-priority flag for re-triage, but without any other examples this may not be a current compat problem.

Comment 6

[Emilio Cobos Álvarez (:emilio)]

Doesn't play for me on Linux still.

Comment 7

[Thomas Wisniewski [:twisniewski]]

The link I posted in comment #0 no longer works (even in Chrome), but the video plays for me on Gentoo Linux if I visit the actual Twitter page in the bz URL field. Emilio, do you see any clues in the devtools?

Comment 8

[Emilio Cobos Álvarez (:emilio)]

Ah, I see, comment 0 is what I was trying. Works for me too now.

Comment 9

[Thomas Wisniewski [:twisniewski]]

Alright, thanks. Then let's close this for now. If anyone can find another video which is failing, please file a new bug with a link to it.