Am 26.01.2020 um 16:34 schrieb lilian:

It seems the mxf was only wrapped with OpenDCP:
asdcp-info -i -d returns

SMPTE 429 file essence type is JPEG 2000 pictures, (6737 edit units).
ProductUUID: 43059a1d-0432-4101-b83f-736815acf31d
ProductVersion: 0.30.0
CompanyName: OpenDCP
ProductName: OpenDCP
EncryptedEssence: No
AssetUUID: 1ee2949c-c2ef-46f5-b5c5-738109994496
Label Set Type: SMPTE
AspectRatio: 1998/1080
EditRate: 24/1
SampleRate: 24/1
StoredWidth: 1998
StoredHeight: 1080
Rsize: 3
Xsize: 1998
Ysize: 1080
XOsize: 0
YOsize: 0
XTsize: 1998
YTsize: 1080
XTOsize: 0
YTOsize: 0
ContainerDuration: 6737
-- JPEG 2000 Metadata --
ImageComponents:
bits h-sep v-sep
12 1 1
12 1 1
12 1 1
Scod: 1
ProgressionOrder: 4
NumberOfLayers: 1
MultiCompTransform: 1
DecompositionLevels: 5
CodeblockWidth: 3
CodeblockHeight: 3
CodeblockStyle: 0
Transformation: 0
Precincts: 6
precinct dimensions:
1: 128 x 128
2: 256 x 256
3: 256 x 256
4: 256 x 256
5: 256 x 256
6: 256 x 256
Sqcd: 66
SPqcd: 972096f096f096c08f008f008ee087508750876870057005704777d377d37762

j2c-test does not give the same result between Jim's DCP and J2K created with OpenDCP.

Jim's DCP:
SIZ:
Rsize: 3
Xsize: 1998
Ysize: 1080
XOsize: 0
YOsize: 0
XTsize: 1998
YTsize: 1080
XTOsize: 0
YTOsize: 0
Csize: 3
Components
0: 11, 1, 1
1: 11, 1, 1
2: 11, 1, 1
COD:
ProgOrder: CPRL
Layers: 1
DecompLevels: 5
CodeBlockWidth: 32
CodeBlockHeight: 32
CodeBlockStyle: 0
Transformation: 9/7
QCD:
QuantizationType: scalar expounded
GuardBits: 4
SPqcd: 4
000000: 20 96 f0 96 f0 96 c0 8f 00 8f 00 8e e0 87 50 87 .............P.
000001: 50 87 68 70 05 70 05 70 47 77 d3 77 d3 77 62 P.hp.p.pGw.w.wb
Unprocessed marker - COC: Coding style component
Unprocessed marker - QCC: Quantization component
Unprocessed marker - COC: Coding style component
Unprocessed marker - QCC: Quantization component
Unprocessed marker - SOT: Start of tile-part
Processed 11 JPEG 2000 marker items.

OPEN DCP 0.30.0:
SIZ:
Rsize: 3
Xsize: 1920
Ysize: 1080
XOsize: 0
YOsize: 0
XTsize: 1920
YTsize: 1080
XTOsize: 0
YTOsize: 0
Csize: 3
Components
0: 11, 1, 1
1: 11, 1, 1
2: 11, 1, 1
COD:
ProgOrder: CPRL
Layers: 1
DecompLevels: 5
CodeBlockWidth: 32
CodeBlockHeight: 32
CodeBlockStyle: 0
Transformation: 9/7
QCD:
QuantizationType: scalar expounded
GuardBits: 4
SPqcd: 4
000000: 20 96 f0 96 f0 96 c0 8f 00 8f 00 8e e0 87 50 87 .............P.
000001: 50 87 68 70 05 70 05 70 47 77 d3 77 d3 77 62 P.hp.p.pGw.w.wb
Unprocessed marker - COC: Coding style component
Unprocessed marker - QCC: Quantization component
Unprocessed marker - COC: Coding style component
Unprocessed marker - QCC: Quantization component
COM:OpenDCP
Unprocessed marker - SOT: Start of tile-part
Processed 12 JPEG 2000 marker items.

DOM 2.14.17:
SIZ:
Rsize: 3
Xsize: 1998
Ysize: 1080
XOsize: 0
YOsize: 0
XTsize: 1998
YTsize: 1080
XTOsize: 0
YTOsize: 0
Csize: 3
Components
0: 11, 1, 1
1: 11, 1, 1
2: 11, 1, 1
COD:
ProgOrder: CPRL
Layers: 1
DecompLevels: 5
CodeBlockWidth: 32
CodeBlockHeight: 32
CodeBlockStyle: 0
Transformation: 9/7
QCD:
QuantizationType: scalar expounded
GuardBits: 4
SPqcd: 4
000000: 20 96 f0 96 f0 96 c0 8f 00 8f 00 8e e0 87 50 87 .............P.
000001: 50 87 68 70 05 70 05 70 47 77 d3 77 d3 77 62 P.hp.p.pGw.w.wb
COM:libdcp
Unprocessed marker - SOT: Start of tile-part
Processed 8 JPEG 2000 marker items.
Le dim. 26 janv. 2020 à 15:13, audiovisual--- via DCPomatic <dcpomatic@carlh.net> a écrit :
I am not fluent in J2K, but to me it looks as if that codestream at least tries to be DCI compliant:

---
Cinema2K profile: This option generates a codestream compliant to the Digital cinema specifications for a 2K resolution content. The value given is the frame rate which can be 24 or 48 fps. The main specifications of the JPEG Profile-3 (2K Digital Cinema Profile) are * Image size = 2048 x 1080 (at least one of the dimensions should match 2048 x 1080) * Single tile * Wavelet transform levels = Maximum of 5 * Wavelet filter = 9-7 filter * Codeblock size = 32 x 32 * Precinct size = 128 x 128 (Lowest frequency subband), 256 x 256 (other subbands) * Maximum Bit rate for entire frame = 1302083 bytes for 24 fps, 651041 bytes for 48fps * Maximum Bit rate for each color component= 1041666 bytes for 24 fps, 520833 bytes for 48fps * Tile parts = 3; Each tile part contains data necessary to decompress one 2K color component * 12 bits per component.
---

It would be interesting to see the same J2C-test output for a current DCP-o-matic output file in comparison.

Jim - is the metadata of the original DCP still available?
Wondering wether the original MXF file contains some header data that may lead to the origin of the files? Although it is quite probable that it would just lead to OpenDCP.

It may still be interesting to find the reason for this, but, in general, when I come across a non-working DCP, I first try to rewrap, and if that also fails, try to re-encode, and then forget about it. J2K and MXF is complex enough, and finding the actual cause will usually get you nowhere, at least when 'old' software has been used. A developer of current software of course, confronted with such an issue should be highly interested.

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

I checked j2c structure with j2c-test but I do not know how to analyse the 'Unprocessed marker':

SIZ:
Rsize: 3
Xsize: 1998
Ysize: 1080
XOsize: 0
YOsize: 0
XTsize: 1998
YTsize: 1080
XTOsize: 0
YTOsize: 0
Csize: 3
Components
0: 11, 1, 1
1: 11, 1, 1
2: 11, 1, 1
COD:
ProgOrder: CPRL
Layers: 1
DecompLevels: 5
CodeBlockWidth: 32
CodeBlockHeight: 32
CodeBlockStyle: 0
Transformation: 9/7
QCD:
QuantizationType: scalar expounded
GuardBits: 4
SPqcd: 4
000000: 20 96 f0 96 f0 96 c0 8f 00 8f 00 8e e0 87 50 87 .............P.
000001: 50 87 68 70 05 70 05 70 47 77 d3 77 d3 77 62 P.hp.p.pGw.w.wb
Unprocessed marker - COC: Coding style component
Unprocessed marker - QCC: Quantization component
Unprocessed marker - COC: Coding style component
Unprocessed marker - QCC: Quantization component
Unprocessed marker - SOT: Start of tile-part
Processed 11 JPEG 2000 marker items.

Le sam. 25 janv. 2020 à 23:07, Carl Hetherington via DCPomatic <dcpomatic@carlh.net> a écrit :

Hi Jim

It might be interesting to see if DCP-o-matic will happily make a new DCP
out of it with "force J2K re-encode" ticked.

Best
Carl

On Sat, 25 Jan 2020, Jim Dummett via DCPomatic wrote:

> Hi all.
>
> Anyone out there have access to a Wailua or recent version of EasyDCP Player+,
> and be willing to run a DCP through it for validation?
>
> This DCP is a 3 minute short which failed playback at a London cinema
> recently. The fault was that picture and sound cut out (screen black, silence)
> for a couple of seconds and then playback resumed, but it skipped forwards by
> about 1 minute. This behaviour was replicated on two different servers at this
> cinema, although weirdly it played back faultlessly at another cinema.
>
> The disturbing thing is that I cannot find any fault with the DCP with the
> tools I have available. I would really like to find out what the fault is so I
> can add tools to our workflow to catch similar faults in future.
>
> NB This DCP came from an unknown external source and was made with OpenDCP.
> However, we rewrapped it with DCP-o-matic (without force J2K re-encode) and
> the problem persisted in that rewrapped DCP.
>
> If anyone is able to help, would be amazing.
>
> Many thanks,
>
> Jim
>
>
>
> _______________________________________________
> DCPomatic mailing list
> DCPomatic@carlh.net
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>

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