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18th August 2020, 19:40 | #1 | Link |
Cary Knoop
Join Date: Feb 2017
Location: Newark CA, USA
Posts: 397
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Frame properties
I am having an interlaced TFF m2v video file extracted from a DVD, showing _FieldBased = 0.
I am opening the file using ffms2.Source() What could be the reason _FieldBased is incorrect. The other properties seem to have transferred correctly. MediaInfo flags the video file appropriately. |
18th August 2020, 20:53 | #2 | Link |
Registered User
Join Date: Jul 2019
Location: Russia
Posts: 87
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There are a lot of such cases and there is nothing to pay attention to. The image can be progressive, and MediaInfo can show that it is interlaced. Telecined MediaInfo cannot determine at all.
For indexing it is better to use d2v. |
18th August 2020, 21:36 | #3 | Link | |
Cary Knoop
Join Date: Feb 2017
Location: Newark CA, USA
Posts: 397
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Quote:
As I wrote before the media is interlaced TFF, MediaInfo correctly identifies it as such but by loading it using ffm2 the _FieldBased property shows 0 (which means progressive). |
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18th August 2020, 21:58 | #4 | Link |
Professional Code Monkey
Join Date: Jun 2003
Location: Kinnarps Chair
Posts: 2,548
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Use d2vsource. It's specialized for this. And FFMS2 can be correct that the frames are indeed progressive what you call "interlaced" is simply RFF flags (which FFMS2 doesn't apply by default).
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VapourSynth - proving that scripting languages and video processing isn't dead yet |
18th August 2020, 22:23 | #6 | Link | |
Professional Code Monkey
Join Date: Jun 2003
Location: Kinnarps Chair
Posts: 2,548
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Quote:
Also, no sample provided.
__________________
VapourSynth - proving that scripting languages and video processing isn't dead yet |
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18th August 2020, 22:33 | #7 | Link |
Cary Knoop
Join Date: Feb 2017
Location: Newark CA, USA
Posts: 397
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Here is a sample:
https://www.dropbox.com/s/z5w91wpm4f...muxed.m2v?dl=0 |
18th August 2020, 23:11 | #10 | Link | |
Registered User
Join Date: May 2011
Posts: 321
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Quote:
_AbsoluteTime 0.0 _ChromaLocation 0=left _ColorRange 1=limited range _DurationDen 30000 _DurationNum 1001 _FieldBased 2=top field first _Matrix 6=170m _PictType I _Primaries 6=170m _SARDen 9 _SARNum 8 _Transfer 6=601 |
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18th August 2020, 23:19 | #12 | Link |
Registered User
Join Date: May 2011
Posts: 321
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yes,that's the way:
{'_AbsoluteTime': 0.0, '_ChromaLocation': 0, '_ColorRange': 1, '_DurationDen': 30000, '_DurationNum': 1001, '_FieldBased': 2, '_Matrix': 6, '_PictType': b'I', '_Primaries': 6, '_SARDen': 9, '_SARNum': 8, '_Transfer': 6} |
18th August 2020, 23:19 | #13 | Link | |
Cary Knoop
Join Date: Feb 2017
Location: Newark CA, USA
Posts: 397
|
Quote:
_FieldBased = 0 _PictType = b'P I am running ffms2 version 2.23. Last edited by Cary Knoop; 18th August 2020 at 23:24. |
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19th August 2020, 00:09 | #16 | Link |
Registered User
Join Date: Sep 2007
Posts: 5,346
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ffms2 from vsrepo is from 2016-10-18
Try this one http://forum.doom9.net/showthread.ph...45#post1906345 |
19th August 2020, 00:15 | #17 | Link | |
Cary Knoop
Join Date: Feb 2017
Location: Newark CA, USA
Posts: 397
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Quote:
Thanks! Should the vsrepo administrator (is there one?) be notified? |
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