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  1. Hello guys, I'm trying to open .webm files in VirtualDub, so I can convert them to AVI manually.
    I've already downloaded DirectShow codecs for WebM from Google's website, but it doesn't work.

    It only shows the window, and then, VirtualDub freezes. There's a screenshot in the attachment.
    What should I do?
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  2. DECEASED
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    Matroska plugin by fccHandler:

    http://fcchandler.home.comcast.net/~fcchandler/Plugins/Matroska/index.html

    Besides, make sure ffdshow's VfW interface is set to decode VP8

    However, there is NO functional/acceptable ACM decoder for Vorbis.
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  3. Originally Posted by El Heggunte View Post
    Matroska plugin by fccHandler:

    http://fcchandler.home.comcast.net/~fcchandler/Plugins/Matroska/index.html

    Besides, make sure ffdshow's VfW interface is set to decode VP8

    However, there is NO functional/acceptable ACM decoder for Vorbis.
    Still freezing...
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    Hmmm, I didn't know the Matroska plugin (still?) doesn't support VP8 video

    Anyway, the WebM samples I have do not freeze VirtualDub 1.9.11,
    they just make it say "NO VIDEO"

    For the time being, you'd better try the DirectShow input plugin, OR
    frameserve VirtualDub with an Avisynth script
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  5. Originally Posted by El Heggunte View Post
    Hmmm, I didn't know the Matroska plugin (still?) doesn't support VP8 video

    Anyway, the WebM samples I have do not freeze VirtualDub 1.9.11,
    they just make it say "NO VIDEO"

    For the time being, you'd better try the DirectShow input plugin, OR
    frameserve VirtualDub with an Avisynth script
    OK, I just downloaded the plugins again and now it says "NO VIDEO".
    Anyway, I tried with DS input Plugin and it freezes.

    I just checked the file with media info and it says the file has 1000fps O_O
    Does that have to do with anything?
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    I just checked the file with media info and it says the file has 1000fps O_O
    Does that have to do with anything?
    Possibly WebM is a format as pesky as FLV , I mean, both use variable framerate plus weird timestamps, which normally translates as "1000 fps"

    However it's more probable that the Google DS filters are the actual source of the freezing problem, since they were created by Linux trolls Just uninstall them, and let the LAV Filters do their job.
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  7. Originally Posted by El Heggunte View Post
    I just checked the file with media info and it says the file has 1000fps O_O
    Does that have to do with anything?
    Possibly WebM is a format as pesky as FLV , I mean, both use variable framerate plus weird timestamps, which normally translates as "1000 fps"

    However it's more probable that the Google DS filters are the actual source of the freezing problem, since they were created by Linux trolls Just uninstall them, and let the LAV Filters do their job.
    IT WORK'D!!!!
    Thanks so much.

    Google's a piece of shit. The most powerful website on the web can't even have a functional codec? ¬¬
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  8. Originally Posted by alinhoalisson View Post
    Google's a piece of shit. The most powerful website on the web can't even have a functional codec? ¬¬
    VFW is ancient, outdated, and deprecated by Microsoft.
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  9. Lone soldier Cauptain's Avatar
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    Strange, because my virtualdub 1.10.1 open Webm default using FFDSHOW.

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    Claudio
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    Originally Posted by alinhoalisson View Post
    ...
    IT WORK'D!!!!
    Thanks so much.
    ...
    You're welcome

    Originally Posted by jagabo View Post
    Originally Posted by alinhoalisson View Post
    Google's a piece of shit. The most powerful website on the web can't even have a functional codec? ¬¬
    VFW is ancient, outdated, and deprecated by Microsoft.
    Is that an excuse for a lousy source-code?
    I mean, if LAV Filters have functioned correctly with the DS-Input vdplugin, this implies both Google's WebM codec and ffdshow are broken.
    Last edited by El Heggunte; 15th Apr 2012 at 09:55.
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    Originally Posted by Cauptain View Post
    Strange, because my virtualdub 1.10.1 open Webm default using FFDSHOW.

    <SNIPP>

    Claudio
    Please stop posting fugly pics
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    [ d e l e t e d ]
    Last edited by El Heggunte; 17th Apr 2012 at 02:15.
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  13. Originally Posted by El Heggunte View Post
    I mean, if LAV Filters have functioned correctly with the DS-Input vdplugin, this implies both Google's WebM codec and ffdshow are broken.
    No, it doesn't imply anything about the quality of VP8. Google doesn't make a VFW VP8 decoder. You're using third party tools to access a VP8 decoder in VirtualDub.
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    Originally Posted by jagabo View Post
    Originally Posted by El Heggunte View Post
    I mean, if LAV Filters have functioned correctly with the DS-Input vdplugin, this implies both Google's WebM codec and ffdshow are broken.
    No, it doesn't imply anything about the quality of VP8. Google doesn't make a VFW VP8 decoder. You're using third party tools to access a VP8 decoder in VirtualDub.
    Well, "someone" does have made a VfW VP8 codec ( <-- clicky ).
    But that's NOT the point.
    Since DirectShow IS capable of interacting with the VfW engine whenever necessary, then the fault actually is:

    --- of ffdshow and Google's VP8 codec ; OR...

    --- of the DirectShow Input Driver ; OR...

    --- of BOTH.
    Last edited by El Heggunte; 17th Apr 2012 at 17:48.
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    UPDATE

    It seems "the root of all evil" ( besides the pseudo-scientist Richard Dawkins of course ) is the media splitter picked by the DirectShow engine. LAV Splitter and MPC's Matroska Splitter do work as they should, even when used with ffdshow --- whereas AV Splitter (and quite probably the WebM source/splitter from Google as well) "freeze" VirtualDub.
    Last edited by El Heggunte; 17th Apr 2012 at 17:57. Reason: there is a bug with the smileys :-/
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  16. Searching for knowledge. trodas's Avatar
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    That make me wonder...

    ...could be the webm convereted to some other container w/o reencoding, like mkv...?
    "I believe that all the people who stand to profit by a war and who help provoke it should be shot on the first day it starts..." - Hemingway :) my config
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    @trodas:

    in the MKVmerge GUI Window, in the Global tab, untick the checkbox "Create WebM compliant file".

    As for other containers...

    MP4 supports Vorbis (un-officially), but does not support VP8;
    AVI supports VP8, but does not support Vorbis;

    MOV =>

    ASF --- in theory, yes, BUT...... well, better forget it;

    MPG and TS --- no way, period.
    Last edited by El Heggunte; 5th Jun 2014 at 18:08.
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  18. Member Cornucopia's Avatar
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    @trodas, WebM = MKV! It's just renamed extension (actually, it is a specific profile of MKV, using specific codecs).

    @El Heggunte, acc'd to developer Alex Noé (maker of AVIMux-Gui), AVI DOES support Vorbis. QT on Mac supports Vorbis via XiphQT (though probably nothing for QT Windows). Same thing with VP8 (Google WebM QT Mac component).

    Scott
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  19. Searching for knowledge. trodas's Avatar
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    Good call. So I tried and the result was "Can't open file" message...
    MKV files I play w/o a glitch. In FFD show the VP8 is configured as libavcodec to decode it. So in teory, it should work, but... it does not.

    When I tried to open the file into VirtualDub, it just tell me, that it have no videostream Suxxx.
    (resulted file is there: http://dfiles.eu/files/qlgjpvnax - https://www.oboom.com/7GGEVXJW - http://www.sendspace.com/file/a8j61x - http://rapidgator.net/file/fb60864c55bfcd27dc294684df5ed3b3/Lechtani_chodidel_paradne_...lecny.mkv.html )


    Tried several other webm files with same results. The output files are not playable/cannot be even opened in VD...! So that does not help at all. What I do wrong? Tried the simple rename webm to mkv and same result. Not playable, not possible to open in VD at all. Bad.
    "I believe that all the people who stand to profit by a war and who help provoke it should be shot on the first day it starts..." - Hemingway :) my config
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  20. Member Cornucopia's Avatar
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    Notice, in post #10 El Heggunte refers to the fact that VP8 decoding in ffdshow is BROKEN!

    Read the rest of this thread and follow what the OP did.

    Scott
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  21. Member racer-x's Avatar
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    You can also open .webm files in Virtualdub via the FFMPEG import plugin.
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    Originally Posted by Cornucopia View Post
    .......

    @El Heggunte, acc'd to developer Alex Noé (maker of AVIMux-Gui), AVI DOES support Vorbis.
    Yes, BUT storing Vorbis in AVI correctly IS NOT very-practical, because of the

    HUGE container overhead, caused by the null audio frames.

    Another no-no for the AVI container is Windows Media Audio. AFAIK, nobody has created an AVI muxer that inserts silence for properly translating the frequent "gaps" in the audio timestamps of the ASF container.
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  23. Originally Posted by racer-x View Post
    You can also open .webm files in Virtualdub via the FFMPEG import plugin.
    Thanks for the info, that means AviUtl should be able to handle WebM also:

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    Actually it is the Libav that handles the import (ffmpeg incorporate Libav sources anyway)

    However, seeking is somewhat slow and jerky
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  24. Member racer-x's Avatar
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    If you rename the extension from .webm to .mkv, Aviutl will open it just fine. Scrolling and seeking works fine then. Another option is AviDemux......

    No Idea why anyone would want to edit that vp8 crap, unless there was no choice.
    Got my retirement plans all set. Looks like I only have to work another 5 years after I die........
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  25. Searching for knowledge. trodas's Avatar
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    That is why - no choice. No other source material, need VP8 "crap" to get into VirtualDub. So so so sad that FFDshow support is broken
    "I believe that all the people who stand to profit by a war and who help provoke it should be shot on the first day it starts..." - Hemingway :) my config
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  26. Searching for knowledge. trodas's Avatar
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    There is a attempt to support plugin based on MKV is made:
    http://forums.virtualdub.org/index.php?act=ST&f=7&t=20294
    Matroska TestVersion VPCodecs.zip

    But it just show the dredful "MISSING CODEC" message instead of anything usable.
    "I believe that all the people who stand to profit by a war and who help provoke it should be shot on the first day it starts..." - Hemingway :) my config
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