video – Why does ffmpeg/ffprobe report the wrong SAR?

The SAR reported by ffprobe for the same file differs from the Pixel Aspect value in QuickTime Player. If I understand correctly, SAR and PAR mean the same thing. Since the file is in NTSC DVD format, why does QuickTime Player report the correct value but ffprobe reports the wrong value? (Actually the DARs of VLC and QuickTime Player are also different according to these values)

Input #0, mpeg, from 'VTS_01_1.mpeg':
  Duration: 00:22:00.07, start: 0.280633, bitrate: 20558 kb/s
  Stream #0:0[0x1bf]: Data: dvd_nav_packet
  Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top first), 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn
      Side data:
        cpb: bitrate max/min/avg: 9396000/0/0 buffer size: 1835008 vbv_delay: N/A
  Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  Stream #0:3[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
  Stream #0:4[0x21]: Subtitle: dvd_subtitle (dvdsub)