MPEG2 artefacts degrading visuals

[beep_boop_iamrobot]

Hi, not sure if this is the right forum - please advise a more suitable forum topic if known.



I have a video from a client (dumped from an RTP stream, in MPEG2 format), which displays terribly in all video players I throw at it (VLC, FFPlay, Media Player Classic, MPC-HC).

bbbb.raw

The output from ffprobe,

.\ffprobe.exe -i .\bbbb.raw -hide_banner
Input #0, mpegvideo, from '.\bbbb.raw':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, top first), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 fps, 59.94 tbr, 1200k tbn
    Side data:
      cpb: bitrate max/min/avg: 3596000/0/0 buffer size: 1835008 vbv_delay: N/A

The footage through ffplay looks like this,

ffplay_01.png
ffplay_02.png
ffplay_03.png

The footage through VLC looks like this,

vlc_01.png
vlc_02.png

ffplay generates the following logging,

.\ffplay.exe -i .\bbbb.mpeg -hide_banner
Input #0, mpegvideo, from '.\bbbb.mpeg':q=    0KB sq=    0B f=0/0
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, top first), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 fps, 59.94 tbr, 1200k tbn
    Side data:
      cpb: bitrate max/min/avg: 3596000/0/0 buffer size: 1835008 vbv_delay: N/A
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 7 11
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 4 13
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 2 19
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 9 15
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 13 6
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 0 7
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 3 9
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 1 23
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 14 8
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 12 18
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 4 22
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 35 1
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 12 28
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 9 29
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 21 12
[mpeg2video @ 00000246c56851c0] mb incr damaged
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 13 20
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 38 16
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 12 2
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 25 10
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 13 26
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 9 27
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 990 DC, 990 AC, 990 MV errors in I frame
[mpeg2video @ 00000246c56851c0] mb incr damaged
[mpeg2video @ 00000246c56851c0] 00 motion_type at 18 15
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 41 19
[mpeg2video @ 00000246c56851c0] 00 motion_type at 29 27
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 182 DC, 182 AC, 182 MV errors in P frame
[mpeg2video @ 00000246c56851c0] Invalid mb type in B-frame at 43 12
[mpeg2video @ 00000246c56851c0] 00 motion_type at 37 0
[mpeg2video @ 00000246c56851c0] mb incr damaged
[mpeg2video @ 00000246c56851c0] Invalid mb type in B-frame at 40 5
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 180 DC, 180 AC, 180 MV errors in B frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 13 2
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 21 7
[mpeg2video @ 00000246c56851c0] invalid cbp 0 at 41 12
[mpeg2video @ 00000246c56851c0] 00 motion_type at 24 22
[mpeg2video @ 00000246c56851c0] invalid cbp 0 at 22 27
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 226 DC, 226 AC, 226 MV errors in P frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 38 17
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 43 11
[mpeg2video @ 00000246c56851c0] end mismatch left=888 B3C3A at 0 30
[mpeg2video @ 00000246c56851c0] 00 motion_type at 41 23
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 182 DC, 182 AC, 182 MV errors in B frame
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 41 18
[mpeg2video @ 00000246c56851c0] mb incr damaged
[mpeg2video @ 00000246c56851c0] end mismatch left=95 4DC505 at 0 30
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 136 DC, 136 AC, 136 MV errors in P frame
[mpeg2video @ 00000246c56851c0] slice mismatch
    Last message repeated 1 times
[mpeg2video @ 00000246c56851c0] 00 motion_type at 8 25
[mpeg2video @ 00000246c56851c0] 00 motion_type at 33 17
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 180 DC, 180 AC, 180 MV errors in B frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 0 6
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 0 8
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 13 9
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 21 13
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 35 0
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 22 11
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 32 15
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 35 17
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 19 24
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 30 19
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 28 21
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 9 3
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 13 29
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 44 27
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 12 7
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 3 10
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 42 14
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 12 1
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 12 16
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 22 18
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 2 20
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 30 22
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 1125 DC, 1125 AC, 1125 MV errors in I frame
[mpeg2video @ 00000246c56851c0] invalid cbp 0 at 42 0    0B f=0/0
[mpeg2video @ 00000246c56851c0] 00 motion_type at 30 15
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] Invalid mb type in B-frame at 16 10
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] 00 motion_type at 16 28
[mpeg2video @ 00000246c56851c0] 00 motion_type at 36 20
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 315 DC, 315 AC, 315 MV errors in B frame
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 9 21
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 24 11
[mpeg2video @ 00000246c56851c0] mb incr damaged
[mpeg2video @ 00000246c56851c0] 00 motion_type at 20 25
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 228 DC, 228 AC, 228 MV errors in P frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 38 2
[mpeg2video @ 00000246c56851c0] 00 motion_type at 5 8
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 21 28
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 137 DC, 137 AC, 137 MV errors in B frame
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 40 14
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 22 25
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 139 DC, 139 AC, 139 MV errors in P frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 16 0
[mpeg2video @ 00000246c56851c0] slice mismatch
    Last message repeated 2 times
[mpeg2video @ 00000246c56851c0] 00 motion_type at 33 20
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 227 DC, 227 AC, 227 MV errors in B frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 24 4   0B f=0/0
[mpeg2video @ 00000246c56851c0] 00 motion_type at 29 16
[mpeg2video @ 00000246c56851c0] end mismatch left=4 8 at 0 30
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 229 DC, 229 AC, 229 MV errors in P frame
[mpeg2video @ 00000246c56851c0] mb incr damagedKB sq=    0B f=0/0
[mpeg2video @ 00000246c56851c0] 00 motion_type at 40 22
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 90 DC, 90 AC, 90 MV errors in B frame
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 9 0f=0/0
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 9 2
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 6 15
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 3 11
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 33 9
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 41 4
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 33 5
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 8 18
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 20 7
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 22 14
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 15 23
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 16 22
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 9 20
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 3 28
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 26 3
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 34 16
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 44 8
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 1 29
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 29 25
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 900 DC, 900 AC, 900 MV errors in I frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 38 6
[mpeg2video @ 00000246c56851c0] 00 motion_type at 40 1
[mpeg2video @ 00000246c56851c0] invalid cbp -1 at 43 16
[mpeg2video @ 00000246c56851c0] 00 motion_type at 37 21
[mpeg2video @ 00000246c56851c0] 00 motion_type at 11 27
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 227 DC, 227 AC, 227 MV errors in B frame
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 42 7
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 10 2
overread 8
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 812 DC, 812 AC, 812 MV errors in P frame
[mpeg2video @ 00000246c56851c0] mb incr damaged
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] 00 motion_type at 12 26
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 149 DC, 149 AC, 149 MV errors in B frame
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 18 9
[mpeg2video @ 00000246c56851c0] invalid cbp 0 at 22 14
[mpeg2video @ 00000246c56851c0] invalid cbp -1 at 10 20
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 9 26
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 226 DC, 226 AC, 226 MV errors in P frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 5 2
[mpeg2video @ 00000246c56851c0] 00 motion_type at 5 14
[mpeg2video @ 00000246c56851c0] 00 motion_type at 27 7
[mpeg2video @ 00000246c56851c0] 00 motion_type at 43 26
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 180 DC, 180 AC, 180 MV errors in B frame
[mpeg2video @ 00000246c56851c0] slice below image (109 >= 30)=0/0
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 7 4    0B f=0/0
overread 5
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 451 DC, 451 AC, 451 MV errors in B frame
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 23 0
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 41 1
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 23 2
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 5 3
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 6 14
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 30 12
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 2 28
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 34 10
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 8 23
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 10 19
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 11 21
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 30 22
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 35 24
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 44 17
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 14 16
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 15 4=0/0
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 26 6
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 6 7
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 24 26
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 4 25
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 35 29
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 16 27
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 990 DC, 990 AC, 990 MV errors in I frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 35 5
[mpeg2video @ 00000246c56851c0] 00 motion_type at 41 16
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 42 10
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 23 25
[mpeg2video @ 00000246c56851c0] 00 motion_type at 14 29
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 275 DC, 275 AC, 275 MV errors in B frame
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 1 15
[mpeg2video @ 00000246c56851c0] 00 motion_type at 33 27
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 140 DC, 140 AC, 140 MV errors in P frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 2 1    0B f=0/0
[mpeg2video @ 00000246c56851c0] 00 motion_type at 30 5
[mpeg2video @ 00000246c56851c0] 00 motion_type at 33 12
overread 8
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 495 DC, 495 AC, 495 MV errors in B frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 14 7
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 29 18
[mpeg2video @ 00000246c56851c0] 00 motion_type at 20 26
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 24 22
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 181 DC, 181 AC, 181 MV errors in P frame
[mpeg2video @ 00000246c56851c0] Invalid mb type in B-frame at 27 6
[mpeg2video @ 00000246c56851c0] 00 motion_type at 8 17
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 43 11
[mpeg2video @ 00000246c56851c0] 00 motion_type at 43 1
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 17 25
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 270 DC, 270 AC, 270 MV errors in B frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 0 15
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] invalid cbp -1 at 11 7
[mpeg2video @ 00000246c56851c0] mb incr damaged
    Last message repeated 1 times
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 6 11
[mpeg2video @ 00000246c56851c0] invalid cbp 0 at 36 12
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 12 15
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 6 16
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 9 17
[mpeg2video @ 00000246c56851c0] 00 motion_type at 1 18
[mpeg2video @ 00000246c56851c0] 00 motion_type at 11 22
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 23 22
[mpeg2video @ 00000246c56851c0] 00 motion_type at 10 28
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 8 29
[mpeg2video @ 00000246c56851c0] 00 motion_type at 3 4    0B f=0/0
[mpeg2video @ 00000246c56851c0] invalid cbp -1 at 5 9
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 7 13
[mpeg2video @ 00000246c56851c0] 00 motion_type at 24 1
[mpeg2video @ 00000246c56851c0] 00 motion_type at 18 1
[mpeg2video @ 00000246c56851c0] 00 motion_type at 29 23
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 44 26
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 12 27
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 6 14
[mpeg2video @ 00000246c56851c0] 00 motion_type at 28 19
[mpeg2video @ 00000246c56851c0] 00 motion_type at 10 20
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 13 8
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 1260 DC, 1260 AC, 1260 MV errors in P frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 36 2
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] 00 motion_type at 25 27
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 180 DC, 180 AC, 180 MV errors in B frame
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 6 4
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 30 5
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 8 6
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 5 8
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 9 12
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 0 1
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 33 13
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 12 17
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 30 16
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 5 28
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 34 29
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 11 21
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 13 19
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 32 24
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 1 25
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 9 2f=0/0
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 33 1
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 15 14
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 3 18
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 15 22
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 7 20
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 36 26
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 25 3
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 25 27
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 1215 DC, 1215 AC, 1215 MV errors in I frame
[mpeg2video @ 00000246c56851c0] Invalid mb type in B-frame at 26 10
[mpeg2video @ 00000246c56851c0] Invalid mb type in B-frame at 1 16
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 44 23
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 30 20
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 182 DC, 182 AC, 182 MV errors in B frame
[mpeg2video @ 00000246c56851c0] slice mismatch6KB sq=    0B f=0/0
[mpeg2video @ 00000246c56851c0] 00 motion_type at 6 9
[mpeg2video @ 00000246c56851c0] 00 motion_type at 12 19
[mpeg2video @ 00000246c56851c0] invalid cbp -1 at 3 27
[mpeg2video @ 00000246c56851c0] invalid cbp 0 at 37 28
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 226 DC, 226 AC, 226 MV errors in P frame
[mpeg2video @ 00000246c56851c0] invalid cbp -1 at 42 9   0B f=0/0
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 38 0
[mpeg2video @ 00000246c56851c0] slice mismatch
    Last message repeated 1 times
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 32 29  0B f=0/0
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 272 DC, 272 AC, 272 MV errors in B frame
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] Invalid mb type in P-frame at 2 23
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 31 28
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 135 DC, 135 AC, 135 MV errors in P frame
[mpeg2video @ 00000246c56851c0] slice mismatch
    Last message repeated 1 times
[mpeg2video @ 00000246c56851c0] 00 motion_type at 8 24
[mpeg2video @ 00000246c56851c0] invalid cbp 0 at 39 28
[mpeg2video @ 00000246c56851c0] mb incr damagedKB sq=    0B f=0/0
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 225 DC, 225 AC, 225 MV errors in B frame
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] 00 motion_type at 40 17
[mpeg2video @ 00000246c56851c0] end mismatch left=587 450598 at 0 30
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 180 DC, 180 AC, 180 MV errors in P frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 41 8
[mpeg2video @ 00000246c56851c0] 00 motion_type at 37 26
[mpeg2video @ 00000246c56851c0] Invalid mb type in B-frame at 0 29
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 135 DC, 135 AC, 135 MV errors in B frame
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 2 6f=0/0
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 13 4
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 36 2
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 11 1
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 35 11
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 40 9
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 13 19
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 42 13
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 14 26
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 28 28
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 22 22
[mpeg2video @ 00000246c56851c0] mb incr damaged
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 11 23
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 39 7
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 37 10
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 27 20
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 30 27
[mpeg2video @ 00000246c56851c0] Invalid mb type in I-frame at 8 29
[mpeg2video @ 00000246c56851c0] skipped MB in I-frame at 25 25
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 900 DC, 900 AC, 900 MV errors in I frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 38 0   0B f=0/0
[mpeg2video @ 00000246c56851c0] 00 motion_type at 12 21
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 34 28
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] slice mismatch9KB sq=    0B f=0/0
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 229 DC, 229 AC, 229 MV errors in B frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 40 0
[mpeg2video @ 00000246c56851c0] 00 motion_type at 12 11
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 30 27
[mpeg2video @ 00000246c56851c0] end mismatch left=7025 131C07 at 0 30
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 184 DC, 184 AC, 184 MV errors in P frame
[mpeg2video @ 00000246c56851c0] 00 motion_type at 15 4
[mpeg2video @ 00000246c56851c0] 00 motion_type at 44 0
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 38 13
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 2 29
[mpeg2video @ 00000246c56851c0] Warning MVs not available0B f=0/0
[mpeg2video @ 00000246c56851c0] concealing 225 DC, 225 AC, 225 MV errors in B frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 43 2
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 28 8
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 14 19
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 23 28
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 8 14
[mpeg2video @ 00000246c56851c0] mb incr damaged
[mpeg2video @ 00000246c56851c0] end mismatch left=228 7355F3 at 0 30
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 318 DC, 318 AC, 318 MV errors in P frame
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 4 20   0B f=0/0
[mpeg2video @ 00000246c56851c0] ac-tex damaged at 33 27
[mpeg2video @ 00000246c56851c0] 00 motion_type at 37 29
[mpeg2video @ 00000246c56851c0] Warning MVs not available
[mpeg2video @ 00000246c56851c0] concealing 137 DC, 137 AC, 137 MV errors in B frame
[mpeg2video @ 00000246c56851c0] slice mismatch
[mpeg2video @ 00000246c56851c0] 00 motion_type at 16 19
...

Has anyone seen the visual artefacts in other videos, or might know what could be the cause of this?

Are there any decoders or setting which might help in producing a clear decoding of the video?

Is there anything clearly/obviously bad with the raw dump file?

[jwillis84]

I've seen that from JVC DVD recorders.

I'm not sure what's different about the Encoder they are using, but would love to understand it.

It is "not" corrupt.

Its not strictly a GOP issue.. its sort of like they are inserting additional "info packets" into the stream that have nothing to do with the video, but the vast majority of decoders attempt to decode it as video packets.

I have never figured it out.. but I suspect if the nature of the extra info were stripped out.. or passed through a filter to remove them the video would be artifact free.

I just don't understand enough about the data stream.

I do know that playback through the JVC hardware decoder, automatically strips out these extra info packets and the video is artifact free.

I don't have MainConcept.. but their software decoder is far more comprehensive than the "freebie" decoders in many free players.. it might be smart enough to strip these packets out or at least ignore them.

"A wild guess" is it maybe some type of professional pseudo "timecode" but that is only a guess.