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VBR DNxHR from Resolve 16 can't be decoded in Premiere Pro

Explorer ,
Aug 15, 2019

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When rendering out DNxHR LB proxies in an MXF OP1a container out of Resolve 16 for use in Premiere Pro, if "Use Constant Bit Rate" is left unchecked, Premiere Pro won't be able to decode the frames at all, and Premiere Pro will throw nasty errors about not being able to decode consecutive frames.

This was observed with:

  • DaVinci Resolve Studio 16.0.0.060 on CentOS 7.6 with NVIDIA driver 430.40
  • DaVinci Resolve Studio 16.0.0.060 on Windows 10 1809; OS Build 17763.678, with 431.70 Studio Driver
  • Premiere Pro 13.1.4 on Windows 10 1809; OS Build 17763.678, with 431.70 Studio Driver

I'm not sure if:

  • Either in Resolve 15 and earlier, whether VBR encoding for DNxHR/MXF OP1a just wasn't an option--I can't remember;
  • Or if something about this particular implementation of VBR in Resolve 16 is newly problematic for Premiere Pro.

I'm also not sure whose responsibility this is--if Blackmagic Design is at fault for a buggy implementation of VBR DNxHR, or if Adobe is at fault for not being able to decode VBR DNxHR.

Is this a bug, and if so, whose responsibility is this? I can report it on the Adobe UserVoice site if need be.

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VBR DNxHR from Resolve 16 can't be decoded in Premiere Pro

Explorer ,
Aug 15, 2019

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When rendering out DNxHR LB proxies in an MXF OP1a container out of Resolve 16 for use in Premiere Pro, if "Use Constant Bit Rate" is left unchecked, Premiere Pro won't be able to decode the frames at all, and Premiere Pro will throw nasty errors about not being able to decode consecutive frames.

This was observed with:

  • DaVinci Resolve Studio 16.0.0.060 on CentOS 7.6 with NVIDIA driver 430.40
  • DaVinci Resolve Studio 16.0.0.060 on Windows 10 1809; OS Build 17763.678, with 431.70 Studio Driver
  • Premiere Pro 13.1.4 on Windows 10 1809; OS Build 17763.678, with 431.70 Studio Driver

I'm not sure if:

  • Either in Resolve 15 and earlier, whether VBR encoding for DNxHR/MXF OP1a just wasn't an option--I can't remember;
  • Or if something about this particular implementation of VBR in Resolve 16 is newly problematic for Premiere Pro.

I'm also not sure whose responsibility this is--if Blackmagic Design is at fault for a buggy implementation of VBR DNxHR, or if Adobe is at fault for not being able to decode VBR DNxHR.

Is this a bug, and if so, whose responsibility is this? I can report it on the Adobe UserVoice site if need be.

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Aug 15, 2019 0
Adobe Community Professional ,
Aug 15, 2019

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It would be good to post it on UserVoice.

I saw this discussed on the LGG forum and one response in that thread commented that they thought that format/codec was by definition CBR. And wondered if that was the problem  ... Resolve doing something odd.

It would be very useful to get some informed comments.

Neil

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Aug 15, 2019 0
LEGEND ,
Aug 15, 2019

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I posted the same on the Resolve forums.  To the best of my knowledge, all flavors of DNx are CBR only, so I have to wonder if BMD broke spec by adding that checkbox.

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Aug 15, 2019 1
Explorer ,
Aug 15, 2019

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I saw that claim, and went looking to try to corroborate it, but I couldn't. I even looked in this workflows guide doc: https://resources.avid.com/SupportFiles/attach/HighRes_WorkflowsGuide.pdf

So, I don't know if it's true that DNxHR can't be VBR.

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Aug 15, 2019 1
Adobe Community Professional ,
Aug 15, 2019

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Yea. I'll try and shake an engineer comment on this later today.

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Aug 15, 2019 1
Adobe Employee ,
Aug 16, 2019

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Seth,

Have a sample clip I can inspect and pass on?

Cheers,
Kevin

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Aug 16, 2019 1
Explorer ,
Aug 16, 2019

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Yup! I'll DM you.

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Aug 16, 2019 0
Guide ,
Aug 16, 2019

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might be cool to get a mediainfo screenshot of specs for source.

I think I read on avid site or someplace that the new DNx codec is frame rate and ( to some extent) resolution independent,

Maybe there's metadata that is messed up so everyone knows just what it is to begin with ??

I think I was using resolve recently and optimizing stuff as DNx SQ ( standard quality ? ) so maybe there is all sorts of metadata and choices available to make the jump from resolve or avid or FCP to Premiere Pro ?

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Aug 16, 2019 0
Explorer ,
Aug 16, 2019

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Good idea. Here's the output of mediainfo with the -f flag for all info. The video stream is definitely VBR without that CBR box checked in the Resolve GUI. The question is if Resolve is doing something wacky and out of spec.

[redacted ~]$ mediainfo -f redacted.mxf

General

Count                                    : 331

Count of stream of this kind             : 1

Kind of stream                           : General

Kind of stream                           : General

Stream identifier                        : 0

Count of video streams                   : 1

Count of audio streams                   : 4

OtherCount                               : 3

Video_Format_List                        : VC-3

Video_Format_WithHint_List               : VC-3

Codecs Video                             : VC-3

Audio_Format_List                        : PCM / PCM / PCM / PCM

Audio_Format_WithHint_List               : PCM / PCM / PCM / PCM

Audio codecs                             : PCM / PCM / PCM / PCM

Other_Format_List                        : MXF TC / MXF TC / SMPTE TC

Other_Format_WithHint_List               : MXF TC / MXF TC / SMPTE TC

Other_Codec_List                         : MXF TC / MXF TC / SMPTE TC

Complete name                            : redacted.mxf

Folder name                              : redacted

File name extension                      : redacted.mxf

File name                                : redacted

File extension                           : mxf

Format                                   : MXF

Format                                   : MXF

Format/Extensions usually used           : mxf

Commercial name                          : MXF DNxHR LB

Commercial name                          : DNxHR LB

Format version                           : 1.3

Format profile                           : OP-1a

Format settings                          : Closed / Complete

Internet media type                      : application/mxf

File size                                : 3535122196

File size                                : 3.29 GiB

File size                                : 3 GiB

File size                                : 3.3 GiB

File size                                : 3.29 GiB

File size                                : 3.292 GiB

Duration                                 : 190190

Duration                                 : 3 min 10 s

Duration                                 : 3 min 10 s 190 ms

Duration                                 : 3 min 10 s

Duration                                 : 00:03:10.190

Duration                                 : 00:03:10:00

Duration                                 : 00:03:10.190 (00:03:10:00)

Overall bit rate mode                    : VBR

Overall bit rate mode                    : Variable

Overall bit rate                         : 148698552

Overall bit rate                         : 149 Mb/s

Frame rate                               : 23.976

Frame rate                               : 23.976 FPS

Frame count                              : 4560

Stream size                              : 139212

Stream size                              : 136 KiB (0%)

Stream size                              : 136 KiB

Stream size                              : 136 KiB

Stream size                              : 136 KiB

Stream size                              : 135.9 KiB

Stream size                              : 136 KiB (0%)

Proportion of this stream                : 0.00004

FooterSize                               : 1300

Package name                             : redacted

Encoded date                             : 2019-08-16 18:46:45.984

File last modification date              : UTC 2019-08-16 18:48:10

File last modification date (local)      : 2019-08-16 14:48:10

Writing application                      : Blackmagic Design DaVinci Resolve 16.0

Encoded_Application_CompanyName          : Blackmagic Design

Encoded_Application_Name                 : DaVinci Resolve

Encoded_Application_Version              : 16.0

Writing library                          : DaVinci Resolve

Encoded_Library_Name                     : DaVinci Resolve

Video

Count                                    : 378

Count of stream of this kind             : 1

Kind of stream                           : Video

Kind of stream                           : Video

Stream identifier                        : 0

StreamOrder                              : 0

ID                                       : 1

ID                                       : 1

Format                                   : VC-3

Format                                   : VC-3

Commercial name                          : DNxHR LB

Commercial name                          : DNxHR LB

Format version                           : Version 3

Format profile                           : RI@LB

Format settings, wrapping mode           : Frame

Codec ID                                 : 0D01030102110100-0401020271280000

Duration                                 : 190190

Duration                                 : 3 min 10 s

Duration                                 : 3 min 10 s 190 ms

Duration                                 : 3 min 10 s

Duration                                 : 00:03:10.190

Duration                                 : 00:03:10:00

Duration                                 : 00:03:10.190 (00:03:10:00)

Bit rate mode                            : VBR

Bit rate mode                            : Variable

Bit rate                                 : 144084552

Bit rate                                 : 144 Mb/s

Width                                    : 3840

Width                                    : 3 840 pixels

Height                                   : 2160

Height                                   : 2 160 pixels

Pixel aspect ratio                       : 1.000

Display aspect ratio                     : 1.778

Display aspect ratio                     : 16:9

Active Format Description                : 15

Active Format Description                : Letterbox 16:9 image, with alternative 4:3 center

Frame rate                               : 23.976

Frame rate                               : 23.976 (24000/1001) FPS

FrameRate_Num                            : 24000

FrameRate_Den                            : 1001

Frame count                              : 4560

Color space                              : YUV

Chroma subsampling                       : 4:2:2

Chroma subsampling                       : 4:2:2

Bit depth                                : 8

Bit depth                                : 8 bits

Scan type                                : Progressive

Scan type                                : Progressive

Bits/(Pixel*Frame)                       : 0.725

Delay                                    : 42435333

Delay                                    : 11 h 47 min

Delay                                    : 11 h 47 min 15 s 333 ms

Delay                                    : 11 h 47 min

Delay                                    : 11:47:15.333

Delay_DropFrame                          : No

Delay, origin                            : Container

Delay, origin                            : Container

Stream size                              : 3425433544

Stream size                              : 3.19 GiB (97%)

Stream size                              : 3 GiB

Stream size                              : 3.2 GiB

Stream size                              : 3.19 GiB

Stream size                              : 3.190 GiB

Stream size                              : 3.19 GiB (97%)

Proportion of this stream                : 0.96897

Title                                    : redacted_v1

Color range                              : Limited

colour_range_Source                      : Container

Color primaries                          : BT.709

colour_primaries_Source                  : Container

Transfer characteristics                 : BT.709

transfer_characteristics_Source          : Container

Matrix coefficients                      : BT.709

matrix_coefficients_Source               : Container

Delay_SDTI                               : 42435333

Audio #1

Count                                    : 283

Count of stream of this kind             : 4

Kind of stream                           : Audio

Kind of stream                           : Audio

Stream identifier                        : 0

Stream identifier                        : 1

StreamOrder                              : 1

ID                                       : 2

ID                                       : 2

Format                                   : PCM

Format                                   : PCM

Commercial name                          : PCM

Format settings                          : Little

Format settings, Endianness              : Little

Format settings, wrapping mode           : Frame (AES)

Codec ID                                 : 0D01030102060300

Duration                                 : 190190

Duration                                 : 3 min 10 s

Duration                                 : 3 min 10 s 190 ms

Duration                                 : 3 min 10 s

Duration                                 : 00:03:10.190

Duration                                 : 00:03:10:00

Duration                                 : 00:03:10.190 (00:03:10:00)

Bit rate mode                            : CBR

Bit rate mode                            : Constant

Bit rate                                 : 1152000

Bit rate                                 : 1 152 kb/s

Channel(s)                               : 1

Channel(s)                               : 1 channel

Samples per frame                        : 2002

Sampling rate                            : 48000

Sampling rate                            : 48.0 kHz

Samples count                            : 9129120

Frame rate                               : 23.976

Frame rate                               : 23.976 FPS (2002 SPF)

Frame count                              : 4560

Bit depth                                : 24

Bit depth                                : 24 bits

Delay                                    : 42435333

Delay                                    : 11 h 47 min

Delay                                    : 11 h 47 min 15 s 333 ms

Delay                                    : 11 h 47 min

Delay                                    : 11:47:15.333

Delay_DropFrame                          : No

Delay, origin                            : Container

Delay, origin                            : Container

Delay relative to video                  : 0

Delay relative to video                  : 00:00:00.000

Stream size                              : 27387360

Stream size                              : 26.1 MiB (1%)

Stream size                              : 26 MiB

Stream size                              : 26 MiB

Stream size                              : 26.1 MiB

Stream size                              : 26.12 MiB

Stream size                              : 26.1 MiB (1%)

Proportion of this stream                : 0.00775

Title                                    : redacted

Delay_SDTI                               : 42435333

Locked                                   : Yes

BlockAlignment                           : 3

Audio #2

Count                                    : 283

Count of stream of this kind             : 4

Kind of stream                           : Audio

Kind of stream                           : Audio

Stream identifier                        : 1

Stream identifier                        : 2

StreamOrder                              : 2

ID                                       : 3

ID                                       : 3

Format                                   : PCM

Format                                   : PCM

Commercial name                          : PCM

Format settings                          : Little

Format settings, Endianness              : Little

Format settings, wrapping mode           : Frame (AES)

Codec ID                                 : 0D01030102060300

Duration                                 : 190190

Duration                                 : 3 min 10 s

Duration                                 : 3 min 10 s 190 ms

Duration                                 : 3 min 10 s

Duration                                 : 00:03:10.190

Duration                                 : 00:03:10:00

Duration                                 : 00:03:10.190 (00:03:10:00)

Bit rate mode                            : CBR

Bit rate mode                            : Constant

Bit rate                                 : 1152000

Bit rate                                 : 1 152 kb/s

Channel(s)                               : 1

Channel(s)                               : 1 channel

Samples per frame                        : 2002

Sampling rate                            : 48000

Sampling rate                            : 48.0 kHz

Samples count                            : 9129120

Frame rate                               : 23.976

Frame rate                               : 23.976 FPS (2002 SPF)

Frame count                              : 4560

Bit depth                                : 24

Bit depth                                : 24 bits

Delay                                    : 42435333

Delay                                    : 11 h 47 min

Delay                                    : 11 h 47 min 15 s 333 ms

Delay                                    : 11 h 47 min

Delay                                    : 11:47:15.333

Delay_DropFrame                          : No

Delay, origin                            : Container

Delay, origin                            : Container

Delay relative to video                  : 0

Delay relative to video                  : 00:00:00.000

Stream size                              : 27387360

Stream size                              : 26.1 MiB (1%)

Stream size                              : 26 MiB

Stream size                              : 26 MiB

Stream size                              : 26.1 MiB

Stream size                              : 26.12 MiB

Stream size                              : 26.1 MiB (1%)

Proportion of this stream                : 0.00775

Title                                    : redacted

Delay_SDTI                               : 42435333

Locked                                   : Yes

BlockAlignment                           : 3

Audio #3

Count                                    : 283

Count of stream of this kind             : 4

Kind of stream                           : Audio

Kind of stream                           : Audio

Stream identifier                        : 2

Stream identifier                        : 3

StreamOrder                              : 3

ID                                       : 4

ID                                       : 4

Format                                   : PCM

Format                                   : PCM

Commercial name                          : PCM

Format settings                          : Little

Format settings, Endianness              : Little

Format settings, wrapping mode           : Frame (AES)

Codec ID                                 : 0D01030102060300

Duration                                 : 190190

Duration                                 : 3 min 10 s

Duration                                 : 3 min 10 s 190 ms

Duration                                 : 3 min 10 s

Duration                                 : 00:03:10.190

Duration                                 : 00:03:10:00

Duration                                 : 00:03:10.190 (00:03:10:00)

Bit rate mode                            : CBR

Bit rate mode                            : Constant

Bit rate                                 : 1152000

Bit rate                                 : 1 152 kb/s

Channel(s)                               : 1

Channel(s)                               : 1 channel

Samples per frame                        : 2002

Sampling rate                            : 48000

Sampling rate                            : 48.0 kHz

Samples count                            : 9129120

Frame rate                               : 23.976

Frame rate                               : 23.976 FPS (2002 SPF)

Frame count                              : 4560

Bit depth                                : 24

Bit depth                                : 24 bits

Delay                                    : 42435333

Delay                                    : 11 h 47 min

Delay                                    : 11 h 47 min 15 s 333 ms

Delay                                    : 11 h 47 min

Delay                                    : 11:47:15.333

Delay_DropFrame                          : No

Delay, origin                            : Container

Delay, origin                            : Container

Delay relative to video                  : 0

Delay relative to video                  : 00:00:00.000

Stream size                              : 27387360

Stream size                              : 26.1 MiB (1%)

Stream size                              : 26 MiB

Stream size                              : 26 MiB

Stream size                              : 26.1 MiB

Stream size                              : 26.12 MiB

Stream size                              : 26.1 MiB (1%)

Proportion of this stream                : 0.00775

Title                                    : redacted

Delay_SDTI                               : 42435333

Locked                                   : Yes

BlockAlignment                           : 3

Audio #4

Count                                    : 283

Count of stream of this kind             : 4

Kind of stream                           : Audio

Kind of stream                           : Audio

Stream identifier                        : 3

Stream identifier                        : 4

StreamOrder                              : 4

ID                                       : 5

ID                                       : 5

Format                                   : PCM

Format                                   : PCM

Commercial name                          : PCM

Format settings                          : Little

Format settings, Endianness              : Little

Format settings, wrapping mode           : Frame (AES)

Codec ID                                 : 0D01030102060300

Duration                                 : 190190

Duration                                 : 3 min 10 s

Duration                                 : 3 min 10 s 190 ms

Duration                                 : 3 min 10 s

Duration                                 : 00:03:10.190

Duration                                 : 00:03:10:00

Duration                                 : 00:03:10.190 (00:03:10:00)

Bit rate mode                            : CBR

Bit rate mode                            : Constant

Bit rate                                 : 1152000

Bit rate                                 : 1 152 kb/s

Channel(s)                               : 1

Channel(s)                               : 1 channel

Samples per frame                        : 2002

Sampling rate                            : 48000

Sampling rate                            : 48.0 kHz

Samples count                            : 9129120

Frame rate                               : 23.976

Frame rate                               : 23.976 FPS (2002 SPF)

Frame count                              : 4560

Bit depth                                : 24

Bit depth                                : 24 bits

Delay                                    : 42435333

Delay                                    : 11 h 47 min

Delay                                    : 11 h 47 min 15 s 333 ms

Delay                                    : 11 h 47 min

Delay                                    : 11:47:15.333

Delay_DropFrame                          : No

Delay, origin                            : Container

Delay, origin                            : Container

Delay relative to video                  : 0

Delay relative to video                  : 00:00:00.000

Stream size                              : 27387360

Stream size                              : 26.1 MiB (1%)

Stream size                              : 26 MiB

Stream size                              : 26 MiB

Stream size                              : 26.1 MiB

Stream size                              : 26.12 MiB

Stream size                              : 26.1 MiB (1%)

Proportion of this stream                : 0.00775

Title                                    : redacted

Delay_SDTI                               : 42435333

Locked                                   : Yes

BlockAlignment                           : 3

Other #1

Count                                    : 188

Count of stream of this kind             : 3

Kind of stream                           : Other

Kind of stream                           : Other

Stream identifier                        : 0

Stream identifier                        : 1

ID                                       : 901-Material

ID                                       : 901-Material

Type                                     : Time code

Format                                   : MXF TC

Format                                   : MXF TC

Commercial name                          : MXF TC

Frame rate                               : 24.000

Frame rate                               : 24.000 FPS

Time code of first frame                 : 11:47:15:08

Time code settings                       : Material Package

Time code, striped                       : Yes

Time code, striped                       : Yes

Title                                    : TC1

Other #2

Count                                    : 188

Count of stream of this kind             : 3

Kind of stream                           : Other

Kind of stream                           : Other

Stream identifier                        : 1

Stream identifier                        : 2

ID                                       : 901-Source

ID                                       : 901-Source

Type                                     : Time code

Format                                   : MXF TC

Format                                   : MXF TC

Commercial name                          : MXF TC

Frame rate                               : 24.000

Frame rate                               : 24.000 FPS

Time code of first frame                 : 11:47:15:08

Time code settings                       : Source Package

Time code, striped                       : Yes

Time code, striped                       : Yes

Title                                    : TC1

Other #3

Count                                    : 188

Count of stream of this kind             : 3

Kind of stream                           : Other

Kind of stream                           : Other

Stream identifier                        : 2

Stream identifier                        : 3

Type                                     : Time code

Format                                   : SMPTE TC

Format                                   : SMPTE TC

Commercial name                          : SMPTE TC

Muxing mode                              : SDTI

Frame rate                               : 24.000

Frame rate                               : 24.000 FPS

Time code of first frame                 : 11:47:15:08

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Aug 16, 2019 0
Guide ,
Aug 16, 2019

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oh. I get it.

And if you check the box when you render out proxies for use in PPro, for constant bit rate, then everything works fine ?

It's just when you render without the constant bit rate box checked ( meaning it defaults to VBR) that it doesn't work if I understand right ??

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Aug 16, 2019 0
Explorer ,
Aug 16, 2019

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Yes, that's correct.

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Aug 16, 2019 0
Guide ,
Aug 16, 2019

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If I remember right.. .the resolve 16 program is still in the 'beta testing' phase … or did they release the final version ?

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Aug 16, 2019 0
Adobe Community Professional ,
Aug 16, 2019

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16 is a final release, 16.1 is in beta.

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Aug 16, 2019 1
Explorer ,
Aug 16, 2019

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16.0 is now a final release, but there's another beta for 16.1.

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Aug 16, 2019 1
LEGEND ,
Aug 16, 2019

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As a way to move forward, I always deliver Cineform YUV 10 bit exports from Resolve, Medium quality.

They look and work great.

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Aug 16, 2019 0