MTS files in latest premiere pro

[rogey0101]

Latest premiere (25.3). Struggeling very hard with avchd files (*.MTS) . Can barely scrubb threw them. Previous premiere version (25.2) Works with them just fine. Tried to convert them to mp4 files, and still nothing. Tried clearing The cache.

Thanks

[Sumeet Kumar Choubey]

Hi rogey0101,

We're sorry to hear about this. We're currently investigating an issue with MTS media in the latest version. Could you please confirm if you are experiencing playback/performance issues or audio noise issues with MTS media? 

Thanks,

Sumeet

[rogey0101]

Thank you for your replay.

I'm having trouble only with playback/performance issues. The audio is fine

[Sumeet Kumar Choubey]

Thanks for confirming that. On which camera were these files captured, & what is the frame rate & frame size? Please also let us know the system specs (OS, CPU, GPU & RAM) & if you have applied any effects to the clips in the timeline.

-Sumeet

[rogey0101]

The files recorded on a cannon camera, 50 fps, 1920x1080 frame size.

System spec are Win 11, Intel i9-12900k, 64 gb ram, Nvidia rtx 2080 ti.

No effects applied.

[Sumeet Kumar Choubey]

Thanks for the details. Is this happening specifically with the MTS media or with other media types as well? Have you tried importing the media files into a new project & checked if it's working? Also, please share a screenshot of the Audio Hardware preferences window.

-Sumeet

[rogey0101]

It happens only with the MTS files, and in every project. Doesnt help to import it into a new project.

[Sumeet Kumar Choubey]

Are you using a USB-powered audio interface for the output? If so, for testing purposes, can you try disconnecting it and see if it improves the scrubbing performance? Also, is it only the scrubbing that is affected, or is regular playback of the timeline also lagging?

Thanks,

Sumeet

[rogey0101]

Im using a 3.5mm audio conector for my audio output.

And also the scrubbing is lagging and it takes at least 15-20 seconds after i hit play, to acatually start playing the footage in real time.. When it starts it plays alright but when i stop it takes another 15 seconds to start again.

I'll say it again, in all the previous premiere versions, it all worked fine. Maybe a little harder then other media but very unnoticable.. 

[12thavenue]

I cannot  get anything but static in the audio when I import MTS files from my Canon EOS C100 Mark II. I thought it might be a problem with my current project, but when I tried to import from previous projects files that had been successfully imported, I got the same result: static in the audio. Video seems fine.

[rogey0101]

I rolled back to premiere 25.2.3. Fixed it. I think its a bug in the 25.3 update

[Sumeet Kumar Choubey]

Hi rogey0101,

In the original post, you mentioned that even transcoding to mp4, didn't improve the performance. Can you please confirm if other non-transcoded mp4 files are working fine or if they are also showing the same behaviour? Also, would you mind sharing a sample media which performs well in v25.2.3 but not in v25.3? It will help us investigate the issue at our end.

Thanks,

Sumeet

[Sumeet Kumar Choubey]

Hi 12thavenue,

Sorry about the poor experience. We're working on fixing the audio noise issue with MTS media in v25.3. For the time being, you may use version 25.2 as a workaround. We will provide updates once the issue has been resolved.

Thanks for your patience.

-Sumeet

[Przemysław31206128xqfd]

I recently upgraded from Windows 10 to Windows 11 because Adobe Premiere was running too slowly. I even spent $2,000 on a new computer specifically to edit video more smoothly — including footage from my older Canon C100 camera, which records in the MTS file format.

Unfortunately, after importing the MTS files into Adobe Premiere on Windows 11 Pro, I encountered a major issue: instead of normal audio, I only get loud static noise in all clips.

I’ve spent hours trying to solve this — installing various codecs and researching solutions — but nothing worked. What’s even more frustrating is that Windows 11 plays the files with no problem, and on Windows 10 Pro with the exact same version of Premiere, there were no audio issues at all.

This is incredibly frustrating.

Many people in the industry have expressed similar frustrations with Adobe Premiere, and are turning to alternatives like Apple computers, DaVinci Resolve, or Sony Vegas.

Please do something about support for older MTS files from cameras like the Canon C100. These cameras are still widely used, and many professionals rely on older equipment in their daily work.

[NietzscheKnewBest]

I have the exact same issue 

Issue: Audio Distortion/Static with Sony PXW-X70 AVCHD .MTS Files in Premiere Pro and Media Encoder (2025)

Summary:
When importing .MTS files recorded on a Sony PXW-X70 (AVCHD, 1080p, 29.97 fps, audio: AC-3 48kHz stereo, lav mic via XLR adapter) into Adobe Premiere Pro 2025 and Adobe Media Encoder 2025 (tested versions: Media Encoder 25.3 and 24.6.5), the audio is heavily distorted or sounds like maxed-out static. The issue persists even after transcoding to ProRes MOV or MXF with uncompressed PCM audio using Media Encoder. These same files play back with clean audio in VLC, QuickTime, Windows Media Player, and DaVinci Resolve.

Reproduction steps:

1. Record video on Sony PXW-X70 with audio via external lav mic, saved as AVCHD .MTS (audio: AC-3 48kHz stereo).

2. Import .MTS file directly into Premiere Pro 2025, or

3. Transcode the .MTS file to MOV/MXF with PCM audio using Adobe Media Encoder 2025.

4. Import the transcoded file into Premiere Pro or play back in VLC.

Expected result:
Audio plays cleanly in Premiere and exported/transcoded files, matching what is heard in VLC or Resolve.

Actual result:
Audio is loud, static, and maxed out—clearly distorted or digital noise—in both Premiere Pro and exported files. The issue is present even with ProRes 422 HQ, PCM audio, and MXF or MOV containers.

Troubleshooting already performed:

• Verified original .MTS plays correctly in VLC, QuickTime, and DaVinci Resolve.

• Confirmed Media Encoder export settings: ProRes 422 HQ, PCM 48kHz, 16/24-bit, stereo.

• Cleaned Media Cache and reset Premiere audio hardware to 48kHz, no input.

• Issue occurs across multiple Adobe versions and persists on different machines.

• Re-wrapping with third-party tools (e.g., Shutter Encoder, ffmpeg) does resolve the audio problem, confirming an AC-3 decode issue within Adobe tools.

System Info:

• Windows 11, up-to-date

• Adobe Premiere Pro 2025

• Adobe Media Encoder 25.3, 24.6.5

• Sony PXW-X70 camera (AVCHD, AC-3 audio)

Conclusion:
This appears to be a bug or missing AC-3 decoding support in recent Adobe builds, affecting AVCHD .MTS files from the Sony PXW-X70 and likely other cameras. Many users with similar workflows may be affected. Temporary workaround is to use Shutter Encoder or ffmpeg to transcode the .MTS files before editing in Adobe apps.

Request:
Please investigate the AC-3/AVCHD import and transcoding workflow in Premiere Pro and Media Encoder 2025, and restore proper audio decoding for affected users.

[Sumeet Kumar Choubey]

Hi everyone,

The audio noise issue with MTS media has been addressed in the latest release of Premiere Pro (v25.4). Please use Creative Cloud Desktop app to install the latest version of Pr.

Thanks,

Sumeet

[rogey0101]

Hi. Installed the latest update (v25.4), No issue with audio noise (never had), but still, like in v25.3, MTS files are causing the program monitor to lag like crazy. Never had this issue until v25.3.

[BERAT KRYEZIU]

Im having also a problem with linking those media , playback performance , and rendering also . 

I have a workstation hp with intel xeon w 2245 , 128gb ram , rtx 3060 .

Last year with older pc i rendered them for 1 hour timeline took 8 minutes to render and used video encode and decode from gpu , now it is now using them and takes about 25 minutes to render those footages.

Sometimes also with mp4 files does not utilize hardware encoder .

I tried davinci it rendered with same settings within 6 minutes and faster playback .

Premiere pro 25.4 installed btw 

[BERAT KRYEZIU]

You can see it is not utilizing the gpu video encode and decode as it should 

[Victor5CD3]

I noticed audio noise and sometimes a delay with files from my Canon XA55 camera. The files are AVCHD .MTS. I was also forced to go back to version 25.2.3. I love Adobe Premiere, but each new update delays our work with problems and bugs. The program was once more stable. I am not an industrial company, but imagine a company that has huge workflows with these problems. Abobe, look more carefully at us, regardless of the brands of cameras and camcorders. The video format codec is the same, so the defect is not in the brand of the camcorder or camera, nor in the codec.

[BERAT KRYEZIU]

yeah definitely. I had an older pc with xeon 6 cores and old gpu quadro p5000 and that BEAST renders very fast . Now i have 8 core xeon with 5 ghz and rtx 3060 and it feel like im rendering with a patato . 

[Victor5CD3]

That's right, my friend Berat, the program has become very slow. My personal computer also has an RTX 3060. I'm seriously considering downgrading to older versions before 2025. I'll wait to see if Adobe fixes these bugs and errors, otherwise I'll go back to older versions of the program. I haven't even used these new implementations, except for the audio in the timeline, which is much better with the new features, but other than that, I don't use them. You can see that the older versions, even with bugs, are more stable; I've already tested them here.

[BERAT KRYEZIU]

I finally solved this problem after days of testing, so I’m posting the solution here to help anyone facing the same issue.
My specs: Intel Xeon W-2245, 128 GB RAM, RTX 3060, Premiere Pro 25.4.

---

Symptoms

• Exporting H.264 / H.265 (MP4) was very slow.

• Premiere showed “Hardware Encoding” but actually used the CPU only.

• GPU Video Encode / Decode stayed at 0% during export.

• Playback performance was poor, even with optimized footage.

• Same MP4 files rendered fine in DaVinci Resolve using GPU.

---

Root Cause

After a lot of testing, the main problem was the Fnord WebM plugin.

• If the WebM plugin is installed, Premiere disables NVIDIA NVENC for H.264/H.265 hardware encoding.

• Premiere still claims “Hardware Encoding” in the export window, but it silently switches to CPU software encoding.

• Additionally, some SDR footage (MTS, MP4, YouTube files) gets incorrectly tagged as HLG/PQ HDR, which can also break hardware encoding.

---

Solution

Step 1 — Remove WebM Plugin :white_heavy_check_mark: (Main Fix)

1. Close Premiere Pro and Adobe Media Encoder.

2. Go to:

   C:\Program Files\Adobe\Common\Plug-ins\7.0\MediaCore\

3. Delete the WebM folder.

4. Restart Premiere.

[BERAT KRYEZIU]

I finally fixed this issue after a lot of testing, so sharing the solution here in case it helps others.
Specs: Xeon W-2245 | 128GB RAM | RTX 3060 | Premiere Pro 25.4

Problem:

• Exports (H.264/H.265) were super slow

• Premiere showed “Hardware Encoding” but only used CPU

• GPU Video Encode stayed at 0%

• Playback was laggy, even on optimized MP4s

Cause:
The Fnord WebM plugin was the problem. If it’s installed, Premiere disables NVIDIA NVENC and falls back to CPU, even though it still says “Hardware Encoding.”

Fix:

1. Close Premiere + Media Encoder

2. Go to:
   C:\Program Files\Adobe\Common\Plug-ins\7.0\MediaCore\

3. Delete the WebM folder

4. Restart Premiere

After removing WebM, GPU NVENC encoding and decoding work perfectly.
My 1h30m timeline now exports in 15 minutes instead of hours, and playback is smooth.

[rogey0101]

Im really getting tired of those bugs. Every update i hope they'll fix those bugs and nothing.

Im gonna give it one more chance in the next update, and after that, it's straight up to davinchi resolve.