Now in beta: Support for H.264 in MKV

[Fergus H]

Hi all,

The latest beta of Premiere Pro and Media Encoder now include support for H.264 in MKV. Our support is particularly focused on customers using MKV files from OBS (Open Broadcaster Software). We support AAC and PCM audio. 

We’d love to get your feedback on this new feature. 

Regards,

Fergus

[R Neil Haugen]

Thanks for the work, and for posting. I think a lot of users would appreciate this ....

Neil

[Jarle Leirpoll]

This makes my life easier. Thanks!

[Jarle Leirpoll]

If support for multiple audio tracks is not added, I'll have to take this back. MKV support without multiple tracks has no value for me.

[Martin_isNotAuniqueName]

Great! Changing the container from mkv to mp4 before importing was not hard - but i am glad to get rid of this step! Thanks!

[MauroCL]

Hi all,

The latest beta of Premiere Pro and Media Encoder now include support for H.264 in MKV. Our support is particularly focused on customers using MKV files from OBS (Open Broadcaster Software). We support AAC and PCM audio. 

We’d love to get your feedback on this new feature. 

Regards,

Fergus

By Fergus H

Hi Fergus,

This is good news, I appreciate the decision of Adobe to support mkv once again.

Mauro

[MauroCL]

Hi Fergus,

I have tested the PP Beta and the first thing I noticed is that it does not load multiple audio tracks, a feature that I use with OBS to separate multiple sources.  Will this be included?

Thanks!

[Tom Nord]

Sorry about that. In discussing with our developer it actually looks like this might be a bit of work. I've put in the request and will work with the team to determine where this might fit. 

[MauroCL]

Hi Tom,

Thank for the feedback. It will be a bummer not to be able to import the tracks, as this feature is key to ensure a right audio balance and quality in post, rather than trying to nail it during production by determining when a source is needed or not at specific segments. 

Looking forward to have a positive feedback.

Regards,

Mauro

[Jarle Leirpoll]

I use this same workflow, recording my microphone and the desktop sound on different audio tracks. If this is not supported, the MKV support has no value for me, unfortunately.

[Tom Nord]

Understood. Thank you for the feedback. 

[Tom Nord]

I just wanted to let you guys know that the latest Premiere Pro 25.3 Beta does have multi-track support for MKV. Please take a look and let us know if you run in to any issues. 

[Faizan Shaikh]

For some reason, I am unable to use Beta version as I am using a corporate machine. Waiting for the main update to use this and many other features.

[Jarle Leirpoll]

Hi Tom,

I tried importing the attached MKV file from OBS to beta build 3, but it only reads one channel/stream. In Pot Player (that's its name) I can select which stream to play back, so the audio is there.

NOTE: I had to rename the .mkv to .mp4 to be able to attach it here, so please rename it before testing it.

[Jarle Leirpoll]

OK, that attachement didn't work... 
Here's a download link: https://leirpoll.filemail.com/d/phmtruedcobjgdl 

[Tom Nord]

I apologize, @Jarle Leirpoll . It seems I jumped the gun a bit. On mac, we have a build that supports multi-track, but I missed that the windows build is still a few builds behind so does not currently have the multi-track support. Naturally, it is build 25.3.0.4 that has this support. Sigh. I expect a newer build will be up soon. 

[Jarle Leirpoll]

I just tried it in build 13, and it works exactly as expected! Thank you SO much for this!

[Tom Nord]

That's really great to hear Jarle. Thank you for the feedback. 

[johnpooley3]

We Export need H.264 and H.265 in the MXF container, please. It's a broadcast standard and the only good way to do embedded captions. Should not be that hard. 

[Tom Nord]

We currently support a wide range of MXF files including ones that used H.264 and HEVC. Is there a particular MXF format you need that is not currently available? 

[johnpooley3]

Wow I obviously didn't proofread my comment

Nonetheless; 

- There are no HEVC MXF OP1A export options

- The bitrate is not customizable on any H.264 MXF OP1A options

Just give us the MainConcept encoders in MXF, please

[Scott-numberstring]

I just tried dropping an mkv into my project in 25.2.0 BETA but it says not supported.

[R Neil Haugen]

Created by what?

[Tom Nord]

The MKV must be H.264 - other codecs are not supported at this time. Also please make sure you are on the latest 25.2 Beta build. 

[Faizan Shaikh]

I am using a normal Premiere Pro install from Creative Cloud. If I go and install Beta version, would it have any impact on my existing projects? will I lose any feature? is there a prerequisite that I must know before using beta version? also, I don't see a beta version in my CC app.