Problems Export DNxHD Codec

DaVinci Resolve

Problems Export DNxHD Codec

Posted by Arne Moritz on November 25, 2016 at 11:24 am

Hallo!

This is the situation.
I have some interview-videofiles as mxf. I did some greenkeying and want to export the clips as DNxHD mov-files.
I tried DNxHD 1080p 220/185/175 10 bit and DNxHD 444, problem is the same.

This is the problem:

Most of the files work fine, some of the files cannot be read by the quicktime player. It works fine with f.i. the vlc but all of the “demaged” files cannot be opened in AVID so it is only important that quicktime runs it.

The mediaInfo :
Format : MPEG-4
Commercial name : DNxHD 185x
Format profile : QuickTime
Codec ID : qt 0000.02 (qt )
File size : 110 MiB
Duration : 4s 960ms
Overall bit rate : 186 Mbps
Writing application : Lavf57.25.100

Video
ID : 1
Format : VC-3
Commercial name : DNxHD 185x
Format version : Version 1
Codec ID : 0
Codec ID/Info : Avid
Codec ID/Hint : DNxHD
Duration : 4s 960ms
Bit rate mode : Constant
Bit rate : 184 Mbps
Nominal bit rate : 1 280 bps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 fps
Color space : YUV
Chroma subsampling : 4:2:2
Bit depth : 10 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 3.540
Stream size : 109 MiB (99%)
Language : English

The difference between the working and not working files seems to be:

Codec ID : 0
and
Codec ID : AVdn

I tried to reduce the renderspeed to 75% but it happens too.
If I rerender the files, they sometimes work and sometimes not.

If they work, they are fine, if not, I rerender till it works.

I would be verry thankfull for a hint or any idea what to do.

Arne Moritz replied 8 years, 3 months ago 3 Members · 3 Replies
3 Replies

Shane Ross
November 27, 2016 at 7:31 am

[Arne Moritz] “Format : MPEG-4
Commercial name : DNxHD 185x”

What are your export settings? Because DNxHD in an MP4 container…that’s wrong. Is the file a .MP4 file? It should be Quicktime mov..DNxHD. HMMM…I don’t see MPEG-4 as an export option. What are your delivery settings? Can you take a screen shot? Or just type in the information

Shane
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Ole Kristiansen
November 27, 2016 at 10:50 am

When you export QuickTime, in DaVinci Resolve, you get MPEG-4 in a MOV container !

It is also possible to export DNxHD as MXF OP-Atom and MXF OP1A – then you get a MXF file !
Arne Moritz
November 29, 2016 at 5:29 pm

OK, seems like I fixed the problem.
With the Update from 12.5.1 to 12.5.3 the problem is gone.

Normaly I do not update any programms while I’m in a project but this time it
was verry helpfull.

Thanks to all.

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