Voukoder supports it, download from here:
https://www.voukoder.org/forum/thread/783-downloads-instructions/

This should already exist

Support for this would be greatly appreciated. It's been supported in Chrome since 2013.

would be extremely helpful for us working on the web

check out this freeware: https://www.fnordware.com/WebM/

WebM support to/from, PLEASE. It's ridiculous that we pay monthly for a service that can't keep up to date with popular formats. Media streamers use WebM a LOT.

WEBM and OGG/OGV should have been included for years by now. What's the status of this request?

What happened to Webm export? Please return it to the exports!!!

This needs to be added to Media Encoder. The only time I have to leave Media Encoder is to convert to/from webm formats, would be nice to just have one app for all video converting.

Hello, I'm not sure if it is possible to merge threads, but this thread already exists and has more votes, https://adobe-video.uservoice.com/forums/911308-media-encoder/suggestions/33907981-webm-support I invite all voters to post their vote in the other thread for more impact.

4 days before 2020. Still don't see it there. Would actually love to have such option when saving a video from Premiere Elements. Adobe still supports all ancient encoders (for what reason?) but nothing new and advance. Shame.

I can't believe I have to spend hours looking to find a solution to export a video to Webm at the end of 2019 with adobe premiere CC 2020 !!!
Is that a joke (very bad) adobe?
Something that would have taken me 2s makes me lose just hours to get such a simple export...

I use iDealshare VideoGo to convert MOV to WebM or convert WebM to MOV.
In fact, it can convert between various video formats like MOV, WEBM, MP4, AVI, MKV, FLV, MPG, VOB, TS etc

Why do you need this ? VP9 is quite slow to encode

I can encode VP9 by using 3rd party software or plugin, but we need more than 3 hours to encord 6 min video. I tried other ways.[Use CUDA, Open CL etc...]
Google has movd into VP9, so please support it!

Seriously... even Google has moved into VP8 7 VP9... have the internet is using WebM (which is lighter and better than mp4) and Adobe still can't incorporate those codecs and formats in their native export procedure...? Seriously....? It's 2019, what are you waiting for Adobe... We are still doing it relying on other 3rd party plugins and software, this is not gonna stop! You are just making it more diffult for us the user that pays you money to work! Adobe stop being a child and incorporate those codecs that we need and that you would not even have to pay for because they are open source... For once think in our benefit and how to make our lives easier and faster... C'mon!

Yes please! The free outside converter sites are sketchy at best. Would love if Media Encoder could do this. Thanks!

I can't get the Fnord extension to appear in Media Encoder, either by installing it via CC or downloading the msi installer so...I guess I don't get to encode webm files.

This is terrible...

Adobe! Support webm!

Converting from WebM is important too. When I have WebM sources, I have to do an awkward set of conversions with FFMpeg. Usually to uncompressed, then to ProRes from Media Encoder. (FFMpeg doesn't do real ProRes, Media Encoder doesn't read WebM. I could make it easier on myself and just go to MP4 in FFMpeg and not bother with ProRes, but that's adding another heavy layer of compression and MP4s don't edit as nicely).

Most implementation of WebM codecs are slow.
Do you need VP8 / VP9 because of the alpha channel support ?