Participant

P: Audio of AVCHD files in .MTS format with PCM audio does not play correctly - sounds like noise

Forum|Forum|8 months ago
June 12, 2025
74 replies
11567 views

[Subject line updated by moderator]

Using the latest version of PP (25.3.0) I was working on a project containing MTS video files, and all of a sudden the next day I opened up the project, and all of the audio tracks of the clips had max volume static (and nothing else). It had been working for several days. In the audio track timeline, it displays as just a solid bar, rather than a typical bar with variying levels as you'd expect (see attached). It is like this in the editor, and also if you export the video.

I messed with this for hours, including contacting Adobe Support Chat for about an hour. They weren't able to help. They left me with suggesting that I make sure all of my Windows updates were in place. I did that and still nothing. I messed with my video card drivers - making sure they were on the latest version, etc. I downloaded the AC3/AC4 codecs from the other Adobe post talking about MTS files not working in the latest version of Windows - that didn't help. I also have cleared cache several times, and I tried re-insatlling the latest version of PP.

If you open the files by themselves in Windows, they are fine. The audio is normal. They work fine in MS Clipchamp. They also work fine an older version of Premiere Pro that I downloaded (24.6.5). So, theoretically, I could start over and do this in 24.6.5, but I'd prefer to continue working in the latest version. I'm sure this is codec related or something, but I have hit a brick wall.

Has anyone else had this specific issue, and have you found a solution? Thanks

Show previous replies

M

MisterAdvent

Inspiring

My workaround was to render the files in Handbrake to .mp4 then use those on the timeline. Fortunitely I only had one file to work with for this project. If I had a whole timeline full of M2TSs, I'd be in trouble!

J

Jacob TJ

Participant

I installed the latest Premiere Pro 2025 version yesterday. Unfortunately, I found out that the software handled my .mts files (AVCHD recordings) badly. First, it spent lots of time reading the files, and when that process was over, the files only partially worked. For instance, the audio was mostly pure noise.

I then read about the problem in various forums and could see that it was a well-known problem with Premiere Pro. I tried to install a Dolby patch I found, but that didn't work. I seriously considered quitting Premiere Pro altogether (as I have loads of AVCHD footage, and I don't want to spend hours converting it), but then - as a last resort - I tried the oldest Premiere Pro version that's in the Adobe Cloud. And it worked flawlessly!

So now I'm using a 2024 version. But hoping to switch to a more recent version if this gets fixed.

Ann Bens

Community Expert

P: Audio of AVCHD files in .MTS format with PCM au... - Adobe Product Community - 15369553

Bookerman

Participant

I'm legit having this same issue right now. I had to revert back to 25.2.3 and it's working. I was just going to make a post about this when I saw yours.

R Neil Haugen

Legend

As is said in quite a number of threads here, they are working on the fix, but for now, revert to 25.2 with that media.

When they get a fix, they'll probably drop it first in a public beta patch (they do those daily) before dropping a new general release update. So you probably should check in the public beta forum for news.

Everyone's mileage always varies ...

ryanMNCPPC

Participant

Any fix yet?

JamiF

Participating Frequently

Good morning! I had the same issue and Adobe kowe about this problem with the most current update. Recommends to go back to earlier version for now until they update and address this issue. I did just that and will work on that version until they send out the update. They said within 2 weeks.

P

Przemysław31206128xqfd

Participant

Hi i have problem with CANON C100 files in PREMIERE.... all was ok in windows 10pro , now I started using new windows 11 pro and instead sound after import file to premiere I got lound noisy sound..

all mts files works perfect outside of premiere pro...
Issue is in adobe premiere not in system or files.

thanks for help

JamiF

Participating Frequently

For all those having this issue ..... just got off phone with Adobe. They are aware of the audio issue and will have a fix within 2 weeks. They recommended I just revert back to a earlier version - which I did. All good now and will work on older version until they figure it out and send out the revised version. Glad it wasn't just me with the issue!

P

Pejaka

Participant

I reverted back to 25.2.3 and got the .MTS audio normal again.

BUT when I use 25.3.0 imported clips the timeline shows audio as static noise, although it sounds normal.

So maybe it is something happening during "Generating Peak File"??

Like between mic level vs. line level...?

Here is little screengrab, last three clips were imported first to 25.3. and here in imported to 25.2 time line.