Hi

I write because I have this problem when I try to play videos in twitter:

"Este navegador no soporta la reproducción de video"
"This browser does not support video playback"

but videos in youtube plays well.

Does someone has an idea?? Before hand, Thanks.

Hola,

Switch on JavaScript. To toggle (switch on/off) it use F7.

That is the most common reason for the error message.

I will move Your message to General. There Your question is more often read.
And You get more English and possibly Spanish answers.

Greetings from Germany to Venezuela



Edited 1 time(s). Last edit at 05/21/2016 10:14AM by guenter.

Not only that. Flashblock is culprit as well :/

I don't use K-meleon for Twitter, but I use Firefox and the error is the same with Flashblock.


--

inter, además de habilitar JavaScript (que lo tendrás habilitado, si no no te saldría ese error), deshabilita FlashBlock. Al bloquear flash, no permite cargar el reproductor flash y eso lleva al error.

Quote
JohnHell
Not only that. Flashblock is culprit as well :/

I don't use K-meleon for Twitter, but I use Firefox and the error is the same with Flashblock.


--

inter, además de habilitar JavaScript (que lo tendrás habilitado, si no no te saldría ese error), deshabilita FlashBlock. Al bloquear flash, no permite cargar el reproductor flash y eso lleva al error.

Hi,

I tried switching Javascript and FlashBlock but the message even apears:
"This browser does not support video playback"

I am sending you a PrintScreen which shows how is my k-meleon configuration, JavaScript always have been turned on.

Does someone have another idea??

Give us a link to twitter video please.

This isn't JS- or Flashblock-related problem. KM 75 doesn't really play twitter and instagram videos for some reason and I think html5 is the reason.

Quote
rodocop
Give us a link to twitter video please.

This isn't JS- or Flashblock-related problem. KM 75 doesn't really play twitter and instagram videos for some reason and I think html5 is the reason.

From the screenshot:
https://twitter.com/CamiAlegre14/status/733918092586299392


You may be right, now, even Firefox displays the error now :/

Old gecko or whatever might be (my Firefox is just 31.x).


EDIT: I see what happens the MP4 patent problem. Gecko can't play MP4.
I think there exists some method, but I don't remember where.



Edited 2 time(s). Last edit at 05/22/2016 03:27PM by JohnHell.

@John, rodocop, James
and other macro writers, this may help you a bit for debugging testing, especially for the countless hidden media prefs. One of my many forever unfinished macros, chaotic alpha, meanwhile outdated and partly wrong itself => please don't distribute further
http://kmeleonbrowser.org/forum/file.php?10,file=1430,filename=menuplus_DEBUG_160501.7z

Quote
JohnHell
Old gecko or whatever might be (my Firefox is just 31.x).

Mine is ESR 38.8.0. Can't play vids on twatter either.

Quote
JohnHell
EDIT: I see what happens the MP4 patent problem. Gecko can't play MP4.

I'm afraid I can't follow you here.
Both FirefoxESR and K-meleon are playing fine all MP4 vids I have on my HD.

I think that twatter has implemented their HTML5-vids in such a way, so they can force the user to use only certain browsers to watch them.
The great freedom "HTML5" will bite us in the ass.

Quote
Yogi

Quote
JohnHell
EDIT: I see what happens the MP4 patent problem. Gecko can't play MP4.

I'm afraid I can't follow you here.
Both FirefoxESR and K-meleon are playing fine all MP4 vids I have on my HD.

I think that twatter has implemented their HTML5-vids in such a way, so they can force the user to use only certain browsers to watch them.
The great freedom "HTML5" will bite us in the ass.

Nop.

MP4 files can only be played in Gecko with the video tag (aka HTML5) depending on the Windows OS version and using the Windows Media Foundation. Gecko, by itself, can't play videos with h.264 codec (usually MP4 container).

Search for it and you'll find that MP4 files with Gecko, can only be played since Vista or 7:

https://stackoverflow.com/questions/20061175/mp4-not-supported-in-firefox
https://en.wikipedia.org/wiki/HTML5_video#Browser_support


Here it is a good test (note that if you are not using XP or below, you won't find any difference):
http://www.w3schools.com/TAgs/tryit.asp?filename=tryhtml5_video



Edited 1 time(s). Last edit at 05/22/2016 08:32PM by JohnHell.

As usual with such stuff, just searching for firefox bugs gives tons of hits. Some look quite interesting
http://www.google.de/search?q=firefox+%22twitter+videos%22+bug&num=30&nfpr=1&gbv=1

But what really worries me now is this:

Quote
Moonchild
FF has started using their own MP4 parser (which is an absolute security nightmare and I don't want to touch it - I've had about 30 sec bugs pass my evaluation in the last 2 Firefox releases alone just from that). It may work around or ignore errors in the videos.

Didn't the FF people claim they are extinguishing Flash now because of its security bugs?? Ha ha... Looks like every time one of the google browsers pretends "security" for killing a feature they only want to replace it with something yet more insecure, but under their own full control, grmpf. Just my opinion.

Quote
JohnHell
Nop.

Search for it and you'll find that MP4 files with Gecko, can only be played since Vista or 7

I knew that. It was a misunderstanding (semantics). My bad.
OK, it can't play by its own but makes use of the splitter shipped with Vista and above.
AFAIK you can install the Haali Media Splitter on XP to solve the problem.
However I am on Win7 and even so can't watch twatter MP4 vids with FirefoxESR 38.8.0 or K-Meleon.

No idea, but does it help anything to set the pref for "windows-media-foundation" to false?

Nope. However, I couldn't care less about twatter vids.
Their message that my browser doesn't support video playback is a blatant lie. Assholes.

Quote
siria
Didn't the FF people claim they are extinguishing Flash now because of its security bugs??

The last statement I saw from Mozilla said they were going to end support for plugins this year, with the exception of Flash. Maybe that's because they can't develop an internal Flash player of their own; after all, many sites have not fully adopted HTML5 and are still depending on Flash. I prefer it, too. Google Street View slowed right down when Google abandoned Flash, and the rendering quality suffered, as well.

FF43 has a built in PDF viewer that sucks big time (and also leaves behind temporary files from Adobe :O). I can still use my SumatraPDF browser plugin, however. It will no longer work in future releases, but who cares? I'd like to tell them where they can put their future releases.

As for media players, I had to edit mimetypes.rdf to stop both KM and FF from using the internal player for MP3s and MP4s. They now play through my external player, which I prefer. OGG files on my system are also associated with my player, but no amount of editing in mimetypes.rdf has stopped either of the two browsers from playing them internally. Same goes for WEBM files, which I've also associated with my player.

---
Gerry

Quote
JohnHell

Quote
Yogi

Quote
JohnHell
EDIT: I see what happens the MP4 patent problem. Gecko can't play MP4.

I'm afraid I can't follow you here.
Both FirefoxESR and K-meleon are playing fine all MP4 vids I have on my HD.

I think that twatter has implemented their HTML5-vids in such a way, so they can force the user to use only certain browsers to watch them.
The great freedom "HTML5" will bite us in the ass.

Nop.

MP4 files can only be played in Gecko with the video tag (aka HTML5) depending on the Windows OS version and using the Windows Media Foundation. Gecko, by itself, can't play videos with h.264 codec (usually MP4 container).

Search for it and you'll find that MP4 files with Gecko, can only be played since Vista or 7:

https://stackoverflow.com/questions/20061175/mp4-not-supported-in-firefox
https://en.wikipedia.org/wiki/HTML5_video#Browser_support


Here it is a good test (note that if you are not using XP or below, you won't find any difference):
http://www.w3schools.com/TAgs/tryit.asp?filename=tryhtml5_video

Hi, JohnHell

I really can watch video at:
http://www.w3schools.com/TAgs/tryit.asp?filename=tryhtml5_video

but not at twitter and at Tutellus which is I really Need.

Surfing the web I got this link:

http://www.quirksmode.org/html5/tests/video.html

I really can watch
WebM
Ogg/Theora

but I can not watch

H.264/MP4
It says "Did't find any video which has a format and compatible MIME type"
"No se ha encotrado ningun video que tenga un formato y tipo MIME compatile"

Some Idea??

I have run some tests at the site which inter provided.

Quote
inter
Surfing the web I got this link:

http://www.quirksmode.org/html5/tests/video.html

I think it must be operating system dependent as to whether one can play mp4. Also I think that twitter may not provide a "src=" for mp4 to Gecko defined browsers.

At the quirksmode.org site I could see the video in all three codecs. I toggled off both the "windows-media-foundation" and "media.windows-media-foundation.use-dxva" prefs and then I got the message for mp4 that it did not have a player for that mimetype. I used KM 76 RC in my tests and my ops sys is Win 10, but KM only reports that I have Win 8. See http://kmeleonbrowser.org/forum/read.php?8,138447,138637#msg-138637

I do not have an account at twitter so I have not tested there.

Quote
JamesD
Also I think that twitter may not provide a "src=" for mp4 to Gecko defined browsers.

I do not have an account at twitter so I have not tested there.

I didn't test myself since I'm using only the ESR version but AFAIK the latest Firefox can play twatter vids.
If you are eager to test, you can use the above link provided by JohnHell.

Quote
inter
Hi, JohnHell

I really can watch video at:
http://www.w3schools.com/TAgs/tryit.asp?filename=tryhtml5_video

but not at twitter and at Tutellus which is I really Need.

There you have to remove the following line, then, test again:
<source src="movie.ogg" type="video/ogg">

If you don't remove it, it falls back to the video/ogg (Theora codec) which has native support in Gecko based browsers (Firefox and K-meleon among them).

But, as JamesD pointed again, it is OS dependent and, maybe, Twitter is not providing the correct mimetype.

Under Windows 2000, I can't test further and I don't want to open the sooooooo slow Windows 7 virtual machine to confirm having other users with live OSs here.



Edited 1 time(s). Last edit at 05/23/2016 03:55PM by JohnHell.

Quote
JohnHell

Quote
inter
Hi, JohnHell

I really can watch video at:
http://www.w3schools.com/TAgs/tryit.asp?filename=tryhtml5_video

but not at twitter and at Tutellus which is I really Need.

There you have to remove the following line, then, test again:
<source src="movie.ogg" type="video/ogg">

If you don't remove it, it falls back to the video/ogg (Theora codec) which has native support in Gecko based browsers (Firefox and K-meleon among them).

But, as JamesD pointed again, it is OS dependent and, maybe, Twitter is not providing the correct mimetype.

Under Windows 2000, I can't test further and I don't want to open the sooooooo slow Windows 7 virtual machine to confirm having other users with live OSs here.

Hi, JohnHell
Where May I remove
<source src="movie.ogg" type="video/ogg">
Thanks

Quote
JamesD
I have run some tests at the site which inter provided.

Quote
inter
Surfing the web I got this link:

http://www.quirksmode.org/html5/tests/video.html

I think it must be operating system dependent as to whether one can play mp4. Also I think that twitter may not provide a "src=" for mp4 to Gecko defined browsers.

At the quirksmode.org site I could see the video in all three codecs. I toggled off both the "windows-media-foundation" and "media.windows-media-foundation.use-dxva" prefs and then I got the message for mp4 that it did not have a player for that mimetype. I used KM 76 RC in my tests and my ops sys is Win 10, but KM only reports that I have Win 8. See http://kmeleonbrowser.org/forum/read.php?8,138447,138637#msg-138637

I do not have an account at twitter so I have not tested there.

Hi, JamesD

Putting "windows" in Browser Configuration I get the next:
media.windows-media-foundation.enabled;true
media.windows-media-foundation.play-stand-alone;true
media.windows-media-foundation.use-dxva;true

Putting "video" in Browser Configuration I get the next:
flashblock.html5video.blocked;false
kmeleon.MRU.URL0;https://twitter.com/CamiAlegre14/status/733918092586299392/video/1
media.video-queue.default-size;10
media.video_stats.enabled;true

The thing that strikes me is this line appears, the link where I have a problem:
kmeleon.MRU.URL0;https://twitter.com/CamiAlegre14/status/733918092586299392/video/1

Some idea??

MRU just means "most recently used" or such. Just a list of last visited pages, no setting.

And not sure if known, but settings can be changed directly on about:config when right-clicking on them, or double-clicking.

Looks like changing some of those video settings need a browser restart:
https://www.reddit.com/r/vidme/comments/3h4240/kindly_stop_requiring_that_windowsmediafoundation/

Some infos from Mozilla:
http://kb.mozillazine.org/Changing_media_handling_behaviour#Audio_and_video_content



Edited 1 time(s). Last edit at 05/25/2016 08:41AM by siria.

inter

I am so lost in looking at the source code for the URL https://twitter.com/CamiAlegre14/status/733918092586299392/video/1 that I have no idea what is going on with Twitter.

On my system, I do not have the pref named "media.windows-media-foundation.play-stand-alone". I will try to add this one and test again later.

I do see that the twitter page says, "This browser does not support video playback." That text is in white letters on a mostly light grey background. If the words, video playback, had not spilled over onto some blue background I would have missed it completely. I know this much. They are wrong. My KM 76 RC on Win 10 does play video.

siria

Thanks for those links. Sounds to me like delivery of HTML5 video is still some way away from being standard or easy.

Quote
inter

Quote
JohnHell
http://www.w3schools.com/TAgs/tryit.asp?filename=tryhtml5_video

Hi, JohnHell
Where May I remove
<source src="movie.ogg" type="video/ogg">
Thanks

In the left pane.

Consider that page as an online live page editor for your html skills test purpose (what actually is ). In this case for HTML5 video tag.

You can replace all video tag to see the differences as follows. Replace this:

<video width="320" height="240" controls>
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>

By this:

<video width="320" height="240" controls>
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the OGG video.
</video>
<video width="320" height="240" controls>
  <source src="movie.mp4" type="video/mp4">
  Your browser does not support the MP4 video.
</video>

Press "See result" after change.

You need Javascript enabled to work.



Edited 1 time(s). Last edit at 05/25/2016 04:12PM by JohnHell.

Quote
JohnHell
Under Windows 2000, I can't test further and I don't want to open the sooooooo slow Windows 7 virtual machine to confirm having other users with live OSs here.

You made me feel guilty.
I've downloaded FF v46.01 to test twatter. The above vid plays in FF v46.01.
However, it plays only with cookies enabled! Really assholes.

Quote
Yogi

Quote
JohnHell
Under Windows 2000, I can't test further and I don't want to open the sooooooo slow Windows 7 virtual machine to confirm having other users with live OSs here.

You made me feel guilty.
I've downloaded FF v46.01 to test twatter. The above vid plays in FF v46.01.
However, it plays only with cookies enabled! Really assholes.

I'm sorry ... so much.

That sounds interesting. Might be that they "need" DOM storage. If I remember correctly from old testings, DOM storage needed cookies enabled to be able to use it.

Some sites out there "require" it for players. Dumb, but they do.

But something else was changed, because I remember playing videos in Twitter in the past with Firefox.

I just don't care they are so CPU hungry. I just download them, errrr, no, downloaded, because now the add-on for Firefox doesn't work anymore either on Twitter

Whatever they did, good for them

new FF versions do have support for some new HTML5 features (and prefs) to play such videos.

No chance to have them in earlier Geckos (38 and earlier)

Quote
JohnHell

Quote
inter

Quote
JohnHell
http://www.w3schools.com/TAgs/tryit.asp?filename=tryhtml5_video

Hi, JohnHell
Where May I remove
<source src="movie.ogg" type="video/ogg">
Thanks

In the left pane.

Consider that page as an online live page editor for your html skills test purpose (what actually is ). In this case for HTML5 video tag.

You can replace all video tag to see the differences as follows. Replace this:

<video width="320" height="240" controls>
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>

By this:

<video width="320" height="240" controls>
  <source src="movie.ogg" type="video/ogg">
  Your browser does not support the OGG video.
</video>
<video width="320" height="240" controls>
  <source src="movie.mp4" type="video/mp4">
  Your browser does not support the MP4 video.
</video>

Press "See result" after change.

You need Javascript enabled to work.

Hi, JohnHell

I did, It said "Didn't find any video which has a format and MIME type compatible".

Some Idea??

I believe I never could watch twitter and Tutellus videos with k-meleon 75.

Does someone suggest a light browser which I can do it, another apart Google Chrome, Internet Explorer 8, Mozilla FF or Slimboat for my old T-Rex running Windows XP?? Thanks.

inter,

TheWorld Browser 6

It's the lightest Chromium without extensions and other unneeded stuff.

P.S. But it isn't as light as K-Meleon.



Edited 1 time(s). Last edit at 05/27/2016 10:14AM by rodocop.