The video preview generator does not respect SAR

[bodqhrohro]

Steps to reproduce

Upload a video with uneven SAR.
https://github.com/user-attachments/assets/a7212cdf-9f0b-479d-89bf-2c827c5dcaca

@bq:08:28:52:/tmp/dl$ ffprobe -hide_banner /data/video/works/kdenlive/renni-2997.mp4 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/video/works/kdenlive/renni-2997.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf61.7.100
  Duration: 00:00:15.89, start: 0.000000, bitrate: 1514 kb/s
  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m, top first), 352x480 [SAR 20:11 DAR 4:3], 1345 kb/s, 29.97 fps, 29.97 tbr, 30k tbn (default)
      Metadata:
        handler_name    : VideoHandler
        vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
      Metadata:
        handler_name    : SoundHandler
        vendor_id       : [0][0][0][0]

Expected behaviour

Correct preview proportions.

Actual behaviour

Operating system

Debian GNU/Linux Trixie

Version of Telegram Desktop

5.11.1

Installation source

Static binary from official website

Crash ID

No response

Logs