"Unsupported compression type" when attempting to import this AVC file

[ChromaKey7]

Hello. I'm trying to import a large video file to Premiere Pro and keep running into the "Unsupported compression type" error. The video has no audio and was separated from a larger MKV file using mkvmerge.

Here's some information on the file I gathered from MediaInfo:

• Format : Matroska
• Format version : Version 4
• File size : 23.9 GiB
• Duration : 2 h 6 min
• Overall bit rate mode : Variable
• Overall bit rate : 27.1 Mb/s
• Encoded date : UTC 2021-07-13 02:30:21
• Writing application : mkvmerge v59.0.0 ('Shining Star') 64-bit
• Writing library : libebml v1.4.2 + libmatroska v1.6.4 FileExtension_Invalid : mkv mk3d mka mks

• ID : 1
• ID in the original source medium : 4113 (0x1011)
• Format : AVC
• Format/Info : Advanced Video Codec
• Format profile : High@L4.1
• Format settings : CABAC / 4 Ref Frames
• Format settings, CABAC : Yes
• Format settings, Reference frames : 4 frames
• Codec ID : V_MPEG4/ISO/AVC
• Duration : 2 h 6 min
• Bit rate mode : Variable
• Bit rate : 27.1 Mb/s
• Maximum bit rate : 39.5 Mb/s
• Width : 1 920 pixels
• Height : 1 080 pixels
• Display aspect ratio : 16:9
• Frame rate mode : Constant
• Frame rate : 23.976 (24000/1001) FPS
• Standard : NTSC
• Color space : YUV
• Chroma subsampling : 4:2:0 Bit depth : 8 bits
• Scan type : Progressive
• Bits/(Pixel*Frame) : 0.546
• Stream size : 23.9 GiB (100%)
• Language : English
• Default : No
• Forced : No
• Color range : Limited
• Color primaries : BT.709
• Transfer characteristics : BT.709
• Matrix coefficients : BT.709
• Original source medium : Blu-ray

[Mike Dziennik]

What file extension does it have? Try changing to .mp4

[ChromaKey7]

Doesn't affect anything, the error is the same. I've already tried saving it as an mp4 as well.
Plus when the file extension is rejected it usually throws an unsupported file type error, I think this is something else.

[Kevin-Monahan]

CK7,

Sorry, friend! Try transcoding this file in Shareware, such as Handbrake or Shutter Encoder. Then I bet it works!

Best,

Kevin

[Ann Bens]

MKV is not supported in Premiere.

Converting is your best bet.

[ChromaKey7 · Accepted solution]

Alright I think I got it figured out: converting the avc to an mp4 in VLC did the trick.