I’m not familiar with premiere. Perhaps others are, but in Final Cut if you set up your project, or sequence it will recognize the footage and aspect ratio. Premiere should be able to if you’re impporting the footage properly.
This is from Premiere support:
Hope thais helps.
Tom
Import assets in Panasonic P2 format
A P2 card is a solid-state memory device that plugs into the PCMCIA slot of a Panasonic P2 video camera, such as the AG-HVX200. The digital video and audio data from the video camera is recorded onto the card in a structured, codec-independent format known as MXF (Media eXchange Format). Specifically, Adobe Premiere Pro supports the Panasonic Op-Atom variant of MXF, with video in DV, DVCPRO, DVCPRO 50 and DVCPRO HD formats. A clip is said to be in the P2 format if its audio and video are contained in Panasonic Op-Atom MXF files, and these files are located in a specific file structure.
The root of the P2 file structure is a CONTENTS folder. Each essence item (an item of video or audio) is contained in a separate MXF wrapper file; the video MXF files are in the VIDEO subfolder, and the audio MXF files are in the AUDIO subfolder. The relationships between essence files and the metadata associated with them are tracked by XML files in the CLIP subfolder.
Note: Adobe Premiere Pro does not support proxies recorded by some Panasonic P2 camcorders in P2 card PROXY folders.
The video and audio on a P2 card are already in a digital form, as if the P2 card were a hard disk, so there is no capture step involved in importing media from a P2 card. The process of reading the data from the card and converting it to a format that can be used in a project is sometimes referred to as ingest.
For your computer to read P2 cards, you must install the appropriate driver, which you can download from the Panasonic website. Panasonic also provides the P2 Viewer application, with which you can browse and play media stored on a P2 card. See the Panasonic website for details: https://www.adobe.com/go/learn_pp_panasonicp2.
Note: Files recorded to P2 format may be read-only. To use certain features to modify these files, such as changing a clip’s metadata using the Timecode dialog box, you may first need to change file properties, through the operating system, to allow write access.
1. (Optional) Copy the entire contents of the P2 card to a hard disk.
Though it is possible to import assets into Adobe Premiere Pro directly from a P2 card, it is usually more efficient to copy the contents of the P2 card to a hard disk before importing.
2. Choose File > Import.
3. Navigate to the CONTENTS folder.
4. Select one or more MXF files. Do one of the following:
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To import video content and its associated audio content, select the MXF files from the VIDEO folder.
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To import only the audio content, select the MXF files from the AUDIO folder.
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To import a group of spanned clips for a shot that were recorded onto the same P2 card, select only one of the clips in the group. The group will be imported as a single clip with a duration equal to the total duration of all the spanned clips it includes. If you select more than one of these spanned clips, you will import duplicates of the whole group of spanned clips, as duplicate clips in the Project panel.
Note: You cannot import spanned clips from a shot that spans two different cards as a single clip. Rather, you must select a single MXF file belonging to the shot from each card to create a separate clip for the part of the shot recorded on each card. For example, if a group of spanned clips for a single shot itself spans two cards, you must select a spanned clip from the group on card 1 and another from the group on card 2. This will import the contents of the shot into two clips in the Project panel.
5. Click Import.