60i not showing as 60fps? at DVinfo.net

Julius Smith · June 14th, 2012, 10:00 AM

Hi,
I have a Sony z5u with the memory recording unit set up as:

Rec Format: HDV 1080i
HDV PROGRE.: Interlace, ScanType: 60

When I record a short clip, I used MediaInfo to look at the file and got:
Why is the Frame Rate at 29.970??

Start time : UTC 2012-06-13 11:33:18
End time : UTC 2012-06-13 11:33:28
Overall bit rate : 26.1 Mbps
Maximum Overall bit rate : 33.0 Mbps
Encoded date : UTC 2012-06-13 11:33:18

Video
ID : 2064 (0x810)
Menu ID : 100 (0x64)
Format : MPEG Video
Format_Commercial_IfAny : HDV 1080i
Format version : Version 2
Format profile : Main@High 1440
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=15
Codec ID : 2
Duration : 10s 244ms
Bit rate : 24.5 Mbps
Maximum bit rate : 25.0 Mbps
Width : 1 440 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.525
Stream size : 29.9 MiB (90%)
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2068 (0x814)
Menu ID : 100 (0x64)
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 2
Codec ID : 3
Duration : 10s 584ms
Bit rate mode : Constant
Bit rate : 384 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : -245ms
Stream size : 496 KiB (1%)

I also brought the file into Sony Vegas, did a match properties on it and got the
HDV 1080-60i(144x1090, 29.970) template. Frame rate set as 29.970 (of course I can change this)

In CS5.5 AE, it says
1440x1080 (1.33),Separating(Upper)
29.97 fps

Should I just ignore and overwrite the 29.970 to 60?

Thanks

Sander Vreuls · June 14th, 2012, 10:22 AM

It is 29.97 frames per second, not 60... It has 60 (well 59.94) FIELDS per second, and 2 fields make up one FRAME. This is because it's interlaced video.

Julius Smith · June 14th, 2012, 01:05 PM

Thanks for your help.

Peter Manojlovic · June 14th, 2012, 07:08 PM

60p is usually related to footage shot with 1280x720@60p..

June 14th, 2012, 10:00 AM	#1
Julius Smith Regular Crew Join Date: May 2010 Location: Montreal Canada Posts: 61	60i not showing as 60fps? Hi, I have a Sony z5u with the memory recording unit set up as: Rec Format: HDV 1080i HDV PROGRE.: Interlace, ScanType: 60 When I record a short clip, I used MediaInfo to look at the file and got: Why is the Frame Rate at 29.970?? Start time : UTC 2012-06-13 11:33:18 End time : UTC 2012-06-13 11:33:28 Overall bit rate : 26.1 Mbps Maximum Overall bit rate : 33.0 Mbps Encoded date : UTC 2012-06-13 11:33:18 Video ID : 2064 (0x810) Menu ID : 100 (0x64) Format : MPEG Video Format_Commercial_IfAny : HDV 1080i Format version : Version 2 Format profile : Main@High 1440 Format settings, BVOP : Yes Format settings, Matrix : Custom Format settings, GOP : M=3, N=15 Codec ID : 2 Duration : 10s 244ms Bit rate : 24.5 Mbps Maximum bit rate : 25.0 Mbps Width : 1 440 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate : 29.970 fps Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Interlaced Scan order : Top Field First Compression mode : Lossy Bits/(Pixel*Frame) : 0.525 Stream size : 29.9 MiB (90%) Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Audio ID : 2068 (0x814) Menu ID : 100 (0x64) Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Codec ID : 3 Duration : 10s 584ms Bit rate mode : Constant Bit rate : 384 Kbps Channel(s) : 2 channels Sampling rate : 48.0 KHz Compression mode : Lossy Delay relative to video : -245ms Stream size : 496 KiB (1%) I also brought the file into Sony Vegas, did a match properties on it and got the HDV 1080-60i(144x1090, 29.970) template. Frame rate set as 29.970 (of course I can change this) In CS5.5 AE, it says 1440x1080 (1.33),Separating(Upper) 29.97 fps Should I just ignore and overwrite the 29.970 to 60? Thanks

June 14th, 2012, 10:22 AM	#2
Sander Vreuls Regular Crew Join Date: Apr 2009 Location: Hilversum, The Netherlands Posts: 184	Re: 60i not showing as 60fps? It is 29.97 frames per second, not 60... It has 60 (well 59.94) FIELDS per second, and 2 fields make up one FRAME. This is because it's interlaced video.

June 14th, 2012, 01:05 PM	#3
Julius Smith Regular Crew Join Date: May 2010 Location: Montreal Canada Posts: 61	Re: 60i not showing as 60fps? Thanks for your help.

June 14th, 2012, 07:08 PM	#4
Peter Manojlovic Major Player Join Date: Jun 2007 Location: Hamilton Ontario Posts: 769	Re: 60i not showing as 60fps? 60p is usually related to footage shot with 1280x720@60p..