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Hi All,
We are trying to recreate markers created in our application to assets in premiere using our panel.
For normal videos this recreation is working fine.
We are facing an issue while recreating the markers in premiere when there is a non zero offset time code for a video.
When there is a non zero offset time code for a video, the start timecode value we are getting in our system (using mediainfo) is different from that in Premiere pro.
We have checked the file in FCP also and found out that the FCP and Mediainfo time codes are matching.
Media info
Time code of first frame : 07:22:37:00
FCP
Time code of first frame : 07:22:37:00
Premiere pro
Time code of first frame : 07:22:10:11
Is it a bug in Premiere? Or do we need to do some preference changes?
Here are the details from mediainfo,
General
Complete name : F:\songs\TEST\frame rate\23.97_offset_not_matching_with_premiere.mov
Format : MPEG-4
Format profile : QuickTime
Codec ID : qt 2005.03 (qt )
File size : 19.9 MiB
Duration : 1 min 31 s
Overall bit rate : 1 827 kb/s
Encoded date : UTC 2009-08-26 12:40:25
Tagged date : UTC 2009-08-26 12:41:55
Writing library : Apple QuickTime
Media/UUID : 2881B878-67F5-46C0-BBFA-9124D7CD11E9
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings : 2 Ref Frames
Format settings, CABAC : No
Format settings, RefFrames : 2 frames
Format settings, GOP : M=2, N=90
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 min 31 s
Bit rate : 1 821 kb/s
Width : 960 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Original display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 23.976 (23976/1000) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.110
Stream size : 19.9 MiB (100%)
Language : English
Encoded date : UTC 2009-08-26 12:40:25
Tagged date : UTC 2009-08-26 12:41:55
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Other
ID : 2
Type : Time code
Format : QuickTime TC
Duration : 1 min 31 s
Time code of first frame : 07:22:37:00
Time code, striped : Yes
Title : 2
Language : English
Encoded date : UTC 2009-08-26 12:41:55
Tagged date : UTC 2009-08-26 12:41:55
Thanks and Regards,
Anoop NR
1 Correct answer
Hi Anoop,
my guess is Premiere does a different frame rate interpretation from MediaInfo and FCP. If you look at the "frame rate" info in MediaInfo, it's 23.976/1000, which could be the root cause of the issue because it indicates NDF (non-drop-frame time code). Usually 23.976 is displayed as 24.000/1001 (DF, drop frame timecode).
The question is if changing the clip's time code settings (changing from 23.976 interpretation to 24, or vice versa) has any effect, because it doesn't tell you precisel
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Hi Anoop,
my guess is Premiere does a different frame rate interpretation from MediaInfo and FCP. If you look at the "frame rate" info in MediaInfo, it's 23.976/1000, which could be the root cause of the issue because it indicates NDF (non-drop-frame time code). Usually 23.976 is displayed as 24.000/1001 (DF, drop frame timecode).
The question is if changing the clip's time code settings (changing from 23.976 interpretation to 24, or vice versa) has any effect, because it doesn't tell you precisely about the frame rate and its divider being applied in order to calculate time code.
Edit: Just performed a quick check here with some footage I set to your source TC at 24fps in Premiere, then switched from 24 to 23.976, and then I have the same value as you do in Premiere. So changing the TC display back to 24 fps should do the trick (Modify Clip/Time code...)
Best,
Erik
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Hi Erik,
Changing the frame rate to 24, is making the timecode match with that of FCP and mediainfo.
Thank you for your quick update.
Thanks and Regards,
Anoop NR