Strange issue in Dark City?

[forumator]

Here's a question for anyone else that's transcoded Dark City...no matter what settings I use (including placebo), at exactly 27:28-27:30 there is some blocky corruption, as you can see in the attached pic. Obviously the encoder is having trouble differentiating between the light and dark patterns but I haven't seen this before and am wondering if it's just due to one particular setting?

https://dl.dropboxusercontent.com/u/171 ... apshot.jpg

[Smithcraft]

Could be due to settings. How about posting a log?

SC

[Registered55]

same here,

Code: Select all

HandBrake svn5550 (Nightly Build) - 64bit Version
OS: Microsoft Windows NT 6.1.7601 Service Pack 1
CPU: Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz
Ram: 8082 MB, Screen: 1920x1080
Temp Dir: C:\Users\Junior\AppData\Local\Temp\
Install Dir: D:\Program Files\Handbrake
Data Dir: C:\Users\Junior\AppData\Roaming\HandBrake\HandBrake\0.0.0.5550

-------------------------------------------

CLI Query:  -i "Z:\Dark City" -t 3 --angle 1 -c 1-18 -o "E:\Dark city - 3 - 04-06-2013.mkv"  -f mkv  -w 1280 --loose-anamorphic  --modulus 2 -e x264 -q 20 --vfr -a 1,3,4,5 -E copy:ac3,ffaac,ffaac,ffaac -6 auto,stereo,stereo,stereo -R Auto,48,48,48 -B 0,64,64,64 -D 0,1,1,1 --gain 0,0,0,0 --audio-fallback ffac3 --subtitle 1 --markers="C:\Users\Junior\AppData\Local\Temp\Dark city - 3 - 04-06-2013-3-chapters.csv" --x264-preset=slow  --x264-profile=high  --x264-tune="film"  --verbose=1
User Query: False

[10:10:09] hb_init: starting libhb thread
HandBrake svn5550 (2013060401) - MinGW x86_64 - http://handbrake.fr
8 CPUs detected
Opening Z:\Dark City...
[10:10:09] hb_scan: path=Z:\Dark City, title_index=3
[10:10:09] scan: BD has 26 title(s)
[10:10:09] bd: scanning title 3
[10:10:09] bd: playlist 00019.MPLS
[10:10:09] bd: duration is 01:51:43 (6703738 ms)
[10:10:09] bd: video id=0x1011, stream type=VC-1, format 1080p
[10:10:09] bd: aspect = 1.77778
[10:10:09] bd: audio id=0x711100, lang=English (DTS), 3cc=eng
[10:10:09] bd: audio id=0x1100, lang=English (DTS-HD MA), 3cc=eng
[10:10:09] bd: audio id=0x1101, lang=English (DTS), 3cc=eng
[10:10:09] bd: audio id=0x1102, lang=English (DTS), 3cc=eng
[10:10:09] bd: audio id=0x1103, lang=English (DTS), 3cc=eng
[10:10:09] bd: subtitle id=0x1200, lang=English, 3cc=eng
[10:10:09] bd: subtitle id=0x1201, lang=Espanol, 3cc=spa
[10:10:09] bd: subtitle id=0x1202, lang=English, 3cc=eng
[10:10:09] bd: chap 1 packet=768, 120078 ms
[10:10:09] bd: chap 2 packet=412559232, 319944 ms
[10:10:09] bd: chap 3 packet=1460049408, 289497 ms
[10:10:09] bd: chap 4 packet=2427850944, 432765 ms
[10:10:09] bd: chap 5 packet=3688940160, 218468 ms
[10:10:09] bd: chap 6 packet=4405618560, 280113 ms
[10:10:09] bd: chap 7 packet=5305130496, 414580 ms
[10:10:09] bd: chap 8 packet=6629604096, 831205 ms
[10:10:09] bd: chap 9 packet=9554314176, 527527 ms
[10:10:09] bd: chap 10 packet=11322099840, 497497 ms
[10:10:09] bd: chap 11 packet=12898458048, 337045 ms
[10:10:09] bd: chap 12 packet=14115635712, 319152 ms
[10:10:09] bd: chap 13 packet=15047369664, 183391 ms
[10:10:09] bd: chap 14 packet=15596847552, 585543 ms
[10:10:09] bd: chap 15 packet=17675309952, 647688 ms
[10:10:09] bd: chap 16 packet=20120669760, 303803 ms
[10:10:09] bd: chap 17 packet=21141400320, 395186 ms
[10:10:09] bd: chap 18 packet=21823241280, 250 ms
[10:10:09] bd: title 3 has 18 chapters
[10:10:09] scan: decoding previews for title 3
[10:10:09] scan: title angle(s) 1
[10:10:09] scan: audio 0x711100: dca, rate=48000Hz, bitrate=1536000 English (DTS) (5.1 ch)
[10:10:09] scan: audio 0x1100: dca, rate=48000Hz, bitrate=1536000 English (DTS-HD MA) (5.1 ch)
[10:10:09] scan: audio 0x1101: dca, rate=48000Hz, bitrate=256000 English (DTS) (2.0 ch)
[10:10:09] scan: audio 0x1102: dca, rate=48000Hz, bitrate=256000 English (DTS) (2.0 ch)
[10:10:09] scan: audio 0x1103: dca, rate=48000Hz, bitrate=256000 English (DTS) (2.0 ch)
Scanning title 1 of 1, preview 3, 30.00 %
Scanning title 1 of 1, preview 5, 50.00 %
Scanning title 1 of 1, preview 6, 60.00 %
Scanning title 1 of 1, preview 9, 90.00 %[10:10:10] scan: 10 previews, 1920x1080, 23.976 fps, autocrop = 128/138/0/0, aspect 16:9, PAR 1:1
[10:10:10] stream: 4 good frames, 0 errors (0%)
[10:10:10] libhb: scan thread found 1 valid title(s)
+ title 3:
  + playlist: 00019.MPLS
  + duration: 01:51:43
  + size: 1920x1080, pixel aspect: 1/1, display aspect: 1.78, 23.976 fps
  + autocrop: 128/138/0/0
  + chapters:
    + 1: cells 0->0, 0 blocks, duration 00:02:00
    + 2: cells 0->0, 0 blocks, duration 00:05:20
    + 3: cells 0->0, 0 blocks, duration 00:04:49
    + 4: cells 0->0, 0 blocks, duration 00:07:13
    + 5: cells 0->0, 0 blocks, duration 00:03:38
    + 6: cells 0->0, 0 blocks, duration 00:04:40
    + 7: cells 0->0, 0 blocks, duration 00:06:55
    + 8: cells 0->0, 0 blocks, duration 00:13:51
    + 9: cells 0->0, 0 blocks, duration 00:08:48
    + 10: cells 0->0, 0 blocks, duration 00:08:17
    + 11: cells 0->0, 0 blocks, duration 00:05:37
    + 12: cells 0->0, 0 blocks, duration 00:05:19
    + 13: cells 0->0, 0 blocks, duration 00:03:03
    + 14: cells 0->0, 0 blocks, duration 00:09:46
    + 15: cells 0->0, 0 blocks, duration 00:10:48
    + 16: cells 0->0, 0 blocks, duration 00:05:04
    + 17: cells 0->0, 0 blocks, duration 00:06:35
    + 18: cells 0->0, 0 blocks, duration 00:00:00
  + audio tracks:
    + 1, English (DTS) (5.1 ch) (iso639-2: eng), 48000Hz, 1536000bps
    + 2, English (DTS-HD MA) (5.1 ch) (iso639-2: eng)
    + 3, English (DTS) (2.0 ch) (iso639-2: eng), 48000Hz, 256000bps
    + 4, English (DTS) (2.0 ch) (iso639-2: eng), 48000Hz, 256000bps
    + 5, English (DTS) (2.0 ch) (iso639-2: eng), 48000Hz, 256000bps
  + subtitle tracks:
    + 1, English (iso639-2: eng) (Bitmap)(PGS)
    + 2, Espanol (iso639-2: spa) (Bitmap)(PGS)
    + 3, English (iso639-2: eng) (Bitmap)(PGS)
Reading chapter markers from file C:\Users\Junior\AppData\Local\Temp\Dark city - 3 - 04-06-2013-3-chapters.csv
AC3 Passthru requested and input codec is not compatible for track 1, using AC3 (ffmpeg) encoder
[10:10:10] 1 job(s) to process
[10:10:10] starting job
[10:10:10] sync: expecting 160728 video frames
[10:10:10] job configuration:
[10:10:10]  * source
[10:10:10]    + Z:\Dark City
[10:10:10]    + title 3, chapter(s) 1 to 18
[10:10:10]  * destination
[10:10:10]    + E:\Dark city - 3 - 04-06-2013.mkv
[10:10:10]    + container: Matroska (libmkv)
[10:10:10]      + chapter markers
[10:10:10]  * video track
[10:10:10]    + decoder: vc1
[10:10:10]      + bitrate 200 kbps
[10:10:10]    + filters
[10:10:10]      + Framerate Shaper (0:27000000:1126125)
[10:10:10]        + frame rate: same as source (around 23.976 fps)
[10:10:10]      + Crop and Scale (1280:542:128:138:0:0)
[10:10:10]        + source: 1920 * 1080, crop (128/138/0/0): 1920 * 814, scale: 1280 * 542
[10:10:10]    + loose anamorphic
[10:10:10]      + storage dimensions: 1280 * 542, mod 2
[10:10:10]      + pixel aspect ratio: 813 / 814
[10:10:10]      + display dimensions: 1278 * 542
[10:10:10]    + encoder: H.264 (x264)
[10:10:10]      + x264 preset: slow
[10:10:10]      + x264 tune: film
[10:10:10]      + h264 profile: high
[10:10:10]      + quality: 20.00 (RF)
[10:10:10]  * subtitle track 1, English (track 0, id 0x1200) Picture [PGS] -> Passthrough
[10:10:10]  * audio track 1
[10:10:10]    + decoder: English (DTS) (5.1 ch) (track 1, id 0x711100)
[10:10:10]      + bitrate: 1536 kbps, samplerate: 48000 Hz
[10:10:10]    + mixdown: 5.1 Channels
[10:10:10]    + encoder: AC3 (ffmpeg)
[10:10:10]      + bitrate: 640 kbps, samplerate: 48000 Hz
[10:10:10]  * audio track 2
[10:10:10]    + decoder: English (DTS) (2.0 ch) (track 3, id 0x1101)
[10:10:10]      + bitrate: 256 kbps, samplerate: 48000 Hz
[10:10:10]    + mixdown: Stereo
[10:10:10]    + encoder: AAC (ffmpeg)
[10:10:10]      + bitrate: 64 kbps, samplerate: 48000 Hz
[10:10:10]  * audio track 3
[10:10:10]    + decoder: English (DTS) (2.0 ch) (track 4, id 0x1102)
[10:10:10]      + bitrate: 256 kbps, samplerate: 48000 Hz
[10:10:10]    + mixdown: Stereo
[10:10:10]    + encoder: AAC (ffmpeg)
[10:10:10]      + bitrate: 64 kbps, samplerate: 48000 Hz
[10:10:10]  * audio track 4
[10:10:10]    + decoder: English (DTS) (2.0 ch) (track 5, id 0x1103)
[10:10:10]      + bitrate: 256 kbps, samplerate: 48000 Hz
[10:10:10]    + mixdown: Stereo
[10:10:10]    + encoder: AAC (ffmpeg)
[10:10:10]      + bitrate: 64 kbps, samplerate: 48000 Hz
[10:10:10] encx264: min-keyint: 24, keyint: 240
[10:10:10] encx264: encoding with stored aspect 813/814
[10:10:10] encx264: Encoding at constant RF 20.000000
x264 [warning]: --psnr used with psy on: results will be invalid!
[10:10:10] reader: first SCR 1044806 id 0x1011 DTS 1044806
x264 [warning]: --tune psnr should be used if attempting to benchmark psnr!
x264 [info]: using SAR=813/814
x264 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
x264 [info]: profile High, level 3.1
[10:10:10] vc1: "Chapter 1" (1) at frame 0 time 3754
[10:10:10] sync: first pts is 3754
[10:11:08] vc1: "Chapter 2" (2) at frame 2879 time 10812381
[10:13:44] vc1: "Chapter 3" (3) at frame 10550 time 39607397
[10:16:01] vc1: "Chapter 4" (4) at frame 17491 time 65662176
[10:19:26] vc1: "Chapter 5" (5) at frame 27867 time 104611086
[10:21:14] vc1: "Chapter 6" (6) at frame 33105 time 124273228
[10:23:26] vc1: "Chapter 7" (7) at frame 39821 time 149483413

not sure if x264 is to blame, or the decoding handbrake does...... quite a bad problem though (definitely corruption)


Going to rip the disk again just in case, will do a full bluray rip this time (did a remux before using default settings in my ripper)

if i don't post again though, then assume it didn't help.

[Deleted User 11865]

I'd say it's either a VC-1 decoding bug, or a bug in your playback software.

Impossible to tell without a short sample of the source though.

[JohnAStebbins]

I have the Dark City BD. The blemish is either in the source or it's a vc-1 decoding bug as Rodeo says. i.e. I can see the same blemish in mplayer and vlc when I play directly from the BD rip.

[Registered55]

it's a decoding error, this has come directly from the source after ripping the disk, (full rip didn't help either)

tried 3 different encodes, always same issue, there is some weirdness to the image, but nothing compared to the screenshot that was posted by the OP

[JohnAStebbins]

I just built the latest libav git to see if the problem still exists since they recently made several VC1 changes. The problem is still there.

[Registered55]

ok, thanks for the heads up, at least they have something that seems to be reproducible, hopefully will bring a faster fix to this issue.

the marks on the wall, and around his cheek are definitely of a low quality, if i didn't know any better i would say the VC1 encoding introduced a few errors on these few frames... something about these few frames just doesn't look right.... if not errors then perhaps a low spike in bitrate maybe??? getting ahead of myself now.... think i'll drop out here.

[JohnAStebbins]

One possibility is that the encoder actually produced invalid data or the reproduction process stepped on a few bits. What we are seeing could potentially be the differences in error concealment behavior between whatever you are using for playback and what libav does.

[forumator]

What's interesting is that if I playback the source ripped straight from disc using eac3to, if I playback using MPC-HC it does not show the corruption BUT VLC or SMPlayer do. Then after encoding the source with placebo settings, all players INCLUDING MPC-HC do show the corruption. Oh well this will be one of those rare movies that I don't transcode, the raw mkv isn't very big anyways

[Deleted User 11865]

IIRC MPC-HC can use the Microsoft VC-1 decoder.