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Firefox cannot play certain Twitter gifs on Windows 7

Kuphostiwe

Examples of broken gifs:

https://twitter.com/wannaODIN_/status/1169143681976283136

https://twitter.com/RedTestament/status/1169139822100930561

https://twitter.com/_t3nshi/status/1169122796573736960

As far as I can tell, this is mainly a Windows 7 problem. I have done a fair bit of testing with gifs I've made myself, and while I don't exactly know how gif "encoding" or whatever works, it seems to be a problem with how Twitter converts certain gif versions.

If I make a gif with Aseprite 1.2.13-x64 the gifs do not work, and show up as black. However you can still download them as a video, reupload them, and then they work, which is kinda weird but I assume twitter re-converts the videos into something else.

However if I make the same gif with Aseprite 1.2.9 which is at least a year older, they work on Twitter.

I've seen some references about H.264 Level 5.2 not working on Windows 7, and maybe that might be the issue? If so, is there any way to get Level 5.2 media to play on Windows 7? https://bugzilla.mozilla.org/show_bug.cgi?id=1479203#c10

Using MediaInfo to check the files of the videos in question they say that they are using AVC (Main@L5.2) (CABAC / 4 Ref Frames), while the "gifs" (yes I know that they are just videos on Twitter) that DO work are AVC (Main@L5).

Examples of broken gifs: https://twitter.com/wannaODIN_/status/1169143681976283136 https://twitter.com/RedTestament/status/1169139822100930561 https://twitter.com/_t3nshi/status/1169122796573736960 As far as I can tell, this is mainly a Windows 7 problem. I have done a fair bit of testing with gifs I've made myself, and while I don't exactly know how gif "encoding" or whatever works, it seems to be a problem with how Twitter converts certain gif versions. If I make a gif with Aseprite 1.2.13-x64 the gifs do not work, and show up as black. However you can still download them as a video, reupload them, and then they work, which is kinda weird but I assume twitter re-converts the videos into something else. However if I make the same gif with Aseprite 1.2.9 which is at least a year older, they work on Twitter. I've seen some references about H.264 Level 5.2 not working on Windows 7, and maybe that might be the issue? If so, is there any way to get Level 5.2 media to play on Windows 7? https://bugzilla.mozilla.org/show_bug.cgi?id=1479203#c10 Using MediaInfo to check the files of the videos in question they say that they are using AVC (Main@L5.2) (CABAC / 4 Ref Frames), while the "gifs" (yes I know that they are just videos on Twitter) that DO work are AVC (Main@L5).
Isicaphuno

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Isisebenziso

  • I-ejenti Engumsebenzisi: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0

Eminye Imininingwane

FredMcD
  • Top 10 Contributor
4255 izisombululo 59584 izimpendulo
Kuphostiwe

kashoucanavi said

Firefox cannot play certain Twitter gifs on Windows 7

Please explain the problem in detail. What happens? What are the exact error message(s) ?

''kashoucanavi [[#question-1268025|said]]'' <blockquote> Firefox cannot play certain Twitter gifs on Windows 7 </blockquote> Please explain the problem in detail. What happens? What are the exact error message(s) ?
Ingabe lokhu kube usizo kuwena?
Isicaphuno

Umnikazi wombuzo

The videos are simply black and do not play. If there's any way to get some kind of debug message, I do not know of it.

The videos are simply black and do not play. If there's any way to get some kind of debug message, I do not know of it.
Ingabe lokhu kube usizo kuwena?
Isicaphuno
FredMcD
  • Top 10 Contributor
4255 izisombululo 59584 izimpendulo
Kuphostiwe

Make sure you are not blocking content.

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?


One issue that seems more common lately is Firefox's Content Blocking. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature:

https://support.mozilla.org/en-US/kb/content-blocking

Make sure you are not blocking content. [https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode Start Firefox in Safe Mode] {web link} A small dialog should appear. Click '''Start In Safe Mode''' (not Refresh). Is the problem still there? --------------- One issue that seems more common lately is Firefox's Content Blocking. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: https://support.mozilla.org/en-US/kb/content-blocking
Ingabe lokhu kube usizo kuwena? 0
Isicaphuno
TyDraniu
  • Top 25 Contributor
319 izisombululo 1832 izimpendulo
Kuphostiwe

I can confirm the issue. I think you're right. Actually you don't need any support from us.

I can confirm the issue. I think you're right. Actually you don't need any support from us.
Ingabe lokhu kube usizo kuwena? 1
Isicaphuno

Impendulo Ewusizo

So basically "Windows 7 doesn't support Level 5.2 media codecs, you're screwed"? That just makes me sad.

So basically "Windows 7 doesn't support Level 5.2 media codecs, you're screwed"? That just makes me sad.
Ingabe lokhu kube usizo kuwena? 1
Isicaphuno

Umnikazi wombuzo

And just for confirmation, yes, it's the same in safe mode.

And just for confirmation, yes, it's the same in safe mode.
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Isicaphuno
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