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

[kgroupcompanies]

[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

[caleb_9898]

So I'm working on a video project, and today I went back to it after taking a break for a while. I started playback and immediately my eardrums were assaulted. It seemed as though the gain was adjusted by +20 or something, but I didn't make any of these changes, and checking "Audio Gain" didn't reveal anything out of the ordinary. It is affecting my whole project, but only blue colored audio clips- the ones I recorded myself. I've been working on this project for weeks without this issue, and I'd prefer not to have to start over! Help please

[caleb_9898]

Update: I tried reverting to the previous version, and it fixed the issue. Not sure what is causing this, but please patch!

[IanB_360]

Hi @shawnwilliampatricks 
Right now we have seen some MTS file Audio issues. Take a look and see if this post is similar to what you have been experiencing. I could merge the conversation and it would help us keep info on this topic all in one place. Let us know if this is what you are experiencing.
mts-format-with-pcm-audio-does-not-play-correctly-sounds-like-noise 
Here to Help
Ian

[shawnwilliampatricks]

Merge the post please.

[Troy29831383xwib]

For the past couple of days, I'd created several projects (More than 10) and the audio was fine for each and everyone of them. Today, the audio is distorted sounding like some popping noise in which other posts was describing similiar. For many users that are reporting this issue, something happened recently. 

App Version 25.3

Windows Home 11

Processor: AMD Ryzen 9 8945HS w/ Radeon 780M Graphics

32 GB RAM

[dylansiggers]

Hey there, 

Today I opened my project file and am having all the footage from one of our cameras playing back with completely clipped static audio. The files play properly off the harddrives, but the issue is consistent across all project files and harddrives, and with the same camera. The camera in question is a Panasonic AC-160. We shot our projects on two of these cameras, and have had no issues with any audio until today. The second AC-160 we are using is showing no issues, and the files when played from the harddrive have no corruption. 

I've reset my audio/media cache, re installed premier, and has had no effect on the problem. When I try to re-import the clips they repeat with the same issue. I'm about to format my computer and re install, but just waiting for my files to copy onto a harddrive. 

Using Version 25.3 with a MacBook Pro (14-inch, 2021), Apple M1 Pro with 32gb of memory on Monteray 12.7.4.

Attached is a video of whats happening. Any help here?

[IanB_360]

Hi @dylansiggers 

If you can confirm that the link posted below is what you are experiencing I can merge you there. We are aware of certain audio issues and the team is very focused on fixing this as soon as they can. mts-format-with-pcm-audio-does-not-play-correctly-sounds-like-noise

Here to Help 

Ian

[RC-MNCPPC]

Watch out for the MTS files losing their audio or they might go to static.  We need a fix please.

Mod note: Post was branched and moved to the bugs forum. The title was changed.

[kevinc35445866]

I was working on a new project in 25.2. Everything was as it should be. Updated to 25.3 reopened the project and audio is nothing but static. I thought it was my computer. I opened the raw files in 24.6.5 and everything plays fine. Of course my project can't be opened in the earlier version. I'm going to reintall 25.2 and see if everything comes back..

[Piotr Gardecki]

To get around this problem, I load the MTS files into Adobe Audition and record them as an audio file, which I can then replace in Premiere; I noticed that this problem does not occur with small files, but with 10-minute files the sound jam out after the import.

[dylansiggers]

Yup that looks like the same issue I'm having. Unreal, thanks in advance everyone!

[Leuvina]

I know I'm not the only one experiencing this issue, but I wanted to lodge my complaint and concern in this community forum because it took me a while to even discover it's not a 'me problem'. ALL of my MTS files are being imported with static sound. The only thing that works is converting the files to MP4 and as someone who edits large files every week it's just not sustainable. In summary, here is what I tried: changing audio to default, Uninstalling Premiere Pro, updating my system, and clearing my cache files. Restating my system, renaming files... nothing works other than file conversion, and this option is inconvenient on multiple fronts. 

[Leuvina]

Update: I downgraded the app to a previous version and was able to import files with audio...

[Ann Bens]

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

[ebethsmith]

This EXACT same thing happened to me two days ago so when I did a seach, I was SO HAPPY to come across your message. Following this thread to find out what the heck to do!!!

[Maxh27]

1. With version 25.3.0 update I have heavy static on MTS extension files.  Any other extension is OK.

I have to convert files to MP4 in PP version  24.6.5 and then use that file in PP 25.3.0.

2. Also, I notice a green square in front of each sequence name.  on the timeline. Does anyone know what this is?

[Sami Succar]

1. The latest update broke something with the MTS extension, the issue has already been flagged several times.

2. That's the sequence label, it's a new feature to make it easier to quickly see it. If you don't use labels, you can turn it off from the wrench menu.

[Sumeet Kumar Choubey]

Hi there,

We're sorry about the poor experience. Are you working with MTS or M2T media in your projects? If so, there is an issue where audio from these files can have noise in v25.3. We're aware of this and are actively working on a fix. For the time being, we recommend using Premiere Pro v25.2 as a workaround. We will keep you updated as the issue is addressed.

Thanks,

Sumeet

[Sumeet Kumar Choubey]

Hi everyone,

Sorry about the poor experience. We're aware of this audio noise issue in v25.3 and are actively working on a fix. For the time being, we recommend using Premiere Pro v25.2 as a workaround. We will keep you updated as the issue is addressed. 

Thanks for your patience.

-Sumeet

[Leuvina]

thanks but adbe audition is also recjecting the files once updated 

[jessd50499862]

hi,

I work with Canon C100 mark 2 for 10 years now

never  a problem

today I import MTS-files into premiere pro 25.3.3 (build 84) and the sound is all noise

in all my older projects the sound also turned to noise

is this a bug in the new version ?

how long is it gonna take to fix because I'm loosing jobs and clients pretty soon this way!

[R Neil Haugen]

Please check the forum ... there are others with mts audio issues posting You might find the answer just by looking here.

And ... when posting for help. always give the OS/CPU/RAM/GPU and specific media used, or it's pretty much something we'll have to ask for before we can help.

[jessd50499862]

Dear Neil,

Thank you for pointing this out

I've never posted in here before, hence my ineptitude! ...

[R Neil Haugen]

Welcome! And we are all new sometime.

Post more, read every couple days, you get to learn a lot here.

[Troy29831383xwib]

Unfortunately, v25.2 & other previous versions are having the same issue.