1893065 - Unable to play video exported from Snapchat, but Safari can (HEVC playback)

Status: RESOLVED DUPLICATE of bug 1842838

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

Description

[Sam Johnson]

Example video URL: https://chitransit.org/uploads/monthly_2024_04/Snapchat-387902916.mp4.d0d7c635500a6317662bf6bd689bcc8d.mp4

When opening this URL with Firefox, I receive "No video with supported format and MIME type found." However, pasting the same URL into Safari allows the video to play without issue.

Comment 1

[Mayank Bansal]

FWIW, I can play the linked video on my Win11 machine.

Comment 2

[Mayank Bansal]

Attachment: about:support for Comment 1

Comment 3

[Sam Johnson]

I can also play on my Win11 machine, but cannot play on any macOS machine. I've adjusted the fields.

Comment 4

[Alice0775 White]

I can play the video on Chrome on Windows11.
However, without HEVC Video Extensions,
I cannot play the video on Firefox117.0 and Edge on Windows11, but video image not displayed.
I cannot play the video on Nightly127.0a1 on Windows11, "No video with supported format and MIME type found." is displayed.

Regression window(can playback but no video image → "No video with supported format and MIME type found."):
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=0f07d1564dc00ef20661573299b575bc66628183&tochange=1641ac4e231a173763bcaa92485d940346351327

The error message appears to be caused by Bug 1848033 or Bug 1847902 , Bug 1847858.

Comment 5

[Jim Mathies [:jimm]]

mp4 / hevc. We don't support hevc officially, except on Windows + Nightly.