February 2022 - ffmpeg-user - lists.ffmpeg.org

Video Notation, A Video Lingua Franca 6+7+8of11.zip (8.0 KB) -- links fixed
by Mark Filipak 07 Feb '22

07 Feb '22

Greetings! For those interested in an object-oriented video notation for concise descriptions of video structures... Video Notation.01.Preface.html Video Notation.02.Teasers.html Video Notation.03.EnhancedTerminology.html Video Notation.04.Reference.html Video Notation.05.EncodingOfDVD&BlurayContent.html ___ This attachment: / => Video Notation.06.AboutAudio.html => Video Notation.07.RecoveringTheCameraShots.html => Video Notation.08.BasicPrimitives.html Video Notation.09.PulldownPrimitives.html Video Notation.10.AdvancedInterpolations.html Video Notation.11.SeenInTheWild.html Warm Regards, Mark Filipak.

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Video Notation, A Video Lingua Franca 4+5of11.zip (9.4 KB) -- links fixed
by Mark Filipak 07 Feb '22

07 Feb '22

Greetings! For those interested in an object-oriented video notation for concise descriptions of video structures... Video Notation.01.Preface.html Video Notation.02.Teasers.html Video Notation.03.EnhancedTerminology.html ___ This attachment: / => Video Notation.04.Reference.html => Video Notation.05.EncodingOfDVD&BlurayContent.html Video Notation.06.AboutAudio.html Video Notation.07.RecoveringTheCameraShots.html Video Notation.08.BasicPrimitives.html Video Notation.09.PulldownPrimitives.html Video Notation.10.AdvancedInterpolations.html Video Notation.11.SeenInTheWild.html Warm Regards, Mark Filipak.

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Video Notation, A Video Lingua Franca 3of11.zip (8.0 KB) -- links fixed
by Mark Filipak 07 Feb '22

07 Feb '22

Greetings! For those interested in an object-oriented video notation for concise descriptions of video structures... Video Notation.01.Preface.html Video Notation.02.Teasers.html ___ This attachment: / => Video Notation.03.EnhancedTerminology.html Video Notation.04.Reference.html Video Notation.05.EncodingOfDVD&BlurayContent.html Video Notation.06.AboutAudio.html Video Notation.07.RecoveringTheCameraShots.html Video Notation.08.BasicPrimitives.html Video Notation.09.PulldownPrimitives.html Video Notation.10.AdvancedInterpolations.html Video Notation.11.SeenInTheWild.html Warm Regards, Mark Filipak.

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Video Notation, A Video Lingua Franca 1+2of11.zip (8.8 KB) -- links fixed
by Mark Filipak 07 Feb '22

07 Feb '22

Greetings! For those interested in an object-oriented video notation for concise descriptions of video structures... ___ This attachment: / => Video Notation.01.Preface.html => Video Notation.02.Teasers.html Video Notation.03.EnhancedTerminology.html Video Notation.04.Reference.html Video Notation.05.EncodingOfDVD&BlurayContent.html Video Notation.06.AboutAudio.html Video Notation.07.RecoveringTheCameraShots.html Video Notation.08.BasicPrimitives.html Video Notation.09.PulldownPrimitives.html Video Notation.10.AdvancedInterpolations.html Video Notation.11.SeenInTheWild.html Warm Regards, Mark Filipak.

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Video Notation, A Video Lingua Franca 9+10+11of11.zip (8.3 KB)
by Mark Filipak 07 Feb '22

07 Feb '22

Greetings! For those interested in an object-oriented video notation for concise descriptions of video structures... Video Notation.01.Preface.html Video Notation.02.Teasers.html Video Notation.03.EnhancedTerminology.html Video Notation.04.Reference.html Video Notation.05.EncodingOfDVD&BlurayContent.html Video Notation.06.AboutAudio.html Video Notation.07.RecoveringTheCameraShots.html Video Notation.08.BasicPrimitives.html ___ This attachment: / => Video Notation.09.PulldownPrimitives.html => Video Notation.10.AdvancedInterpolations.html => Video Notation.11.SeenInTheWild.html Warm Regards, Mark Filipak.

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Video Notation, A Video Lingua Franca 6+7+8of11.zip (8.0 KB)
by Mark Filipak 07 Feb '22

07 Feb '22

Greetings! For those interested in an object-oriented video notation for concise descriptions of video structures... Video Notation.01.Preface.html Video Notation.02.Teasers.html Video Notation.03.EnhancedTerminology.html Video Notation.04.Reference.html Video Notation.05.EncodingOfDVD&BlurayContent.html ___ This attachment: / => Video Notation.06.AboutAudio.html => Video Notation.07.RecoveringTheCameraShots.html => Video Notation.08.BasicPrimitives.html Video Notation.09.PulldownPrimitives.html Video Notation.10.AdvancedInterpolations.html Video Notation.11.SeenInTheWild.html Warm Regards, Mark Filipak.

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Video Notation, A Video Lingua Franca 4+5of11.zip (9.4 KB)
by Mark Filipak 07 Feb '22

07 Feb '22

Greetings! For those interested in an object-oriented video notation for concise descriptions of video structures... Video Notation.01.Preface.html Video Notation.02.Teasers.html Video Notation.03.EnhancedTerminology.html ___ This attachment: / => Video Notation.04.Reference.html => Video Notation.05.EncodingOfDVD&BlurayContent.html Video Notation.06.AboutAudio.html Video Notation.07.RecoveringTheCameraShots.html Video Notation.08.BasicPrimitives.html Video Notation.09.PulldownPrimitives.html Video Notation.10.AdvancedInterpolations.html Video Notation.11.SeenInTheWild.html Warm Regards, Mark Filipak.

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Video Notation, A Video Lingua Franca 3of11.zip (8.0 KB)
by Mark Filipak 07 Feb '22

07 Feb '22

Greetings! For those interested in an object-oriented video notation for concise descriptions of video structures... Video Notation.01.Preface.html Video Notation.02.Teasers.html ___ This attachment: / => Video Notation.03.EnhancedTerminology.html Video Notation.04.Reference.html Video Notation.05.EncodingOfDVD&BlurayContent.html Video Notation.06.AboutAudio.html Video Notation.07.RecoveringTheCameraShots.html Video Notation.08.BasicPrimitives.html Video Notation.09.PulldownPrimitives.html Video Notation.10.AdvancedInterpolations.html Video Notation.11.SeenInTheWild.html Warm Regards, Mark Filipak.

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'setts' filter questions
by Mark Filipak 06 Feb '22

06 Feb '22

The subject is the 'setts' filter. The text below is my compact synopsis of section 2.27 of the bitstream filters. Below the text, please find 5 [question]s. Those are my questions, and I've been pondering them for a long time, but any comments are very welcome of course. Thanks for help -- much appreciated, Mark. 2.27 setts -- Set target DTSs or PTSs or both. 'setts=dts=?' ...no defaults. 'setts=pts=?' ...no defaults. 'setts=ts?' ...alias for 'setts=pts=?'. [question 1] 'setts=dts=?:pts=?' ...no defaults. : : : eval API expression for target PTSs (plus the Factors below) [question 2] eval API expression for target DTSs (plus the Factors below) [question 2] Factors: For every 'current' frame, 'N', compute DTS and/or PTS using the following factors: 'N' ...the frame number (i.e. 0 1 2..). 'TB' ...the current TB within the filter chain. 'STARTDTS' ...the DTS of source frame 0. 'PREV_INDTS' ...the DTS of source frame N-1. 'PREV_OUTDTS' ...the DTS of target frame N-1. 'DTS' ...the DTS of source frame N. 'STARTPTS' ...the PTS of source frame 0. 'PREV_INPTS' ...the PTS of source frame N-1. 'PREV_OUTPTS' ...the PTS of target frame N-1. 'PTS' ...the PTS of source frame N. 'TS' ...in 'dts=', the DTS of the current frame; in 'pts=', the PTS of the current frame. 'POS' ...the original position in the file of the packet, or 'undefined' if undefined for the current packet. [question 3] 'SR' ...The sample rate of stream packet belongs. [question 4] 'NOPTS' ...The AV_NOPTS_VALUE constant. [question 5] [question 1] Is 'ts=' simply an alias for 'pts='? [question 2] Regarding "The expressions are evaluated through the eval API", does that mean that all of these: 'abs' 'acos' 'asin' .. 'time' 'trunc' 'while', are available? Or does it simply mean that the expressions are evaluated by the eval API, but the eval AVI built-in factors are not necessarily available? [question 3] Regarding 'POS', is it some sort of packet index? Or sector number for disc-based media? Or byte offset? Or something else? And of what utility is it? [question 4] Regarding 'SR', besides referring to 'sample rate', what is it? Is it source fps? Or is it something else? [question 5] What does "AV_NOPTS_VALUE" do? Is it really 0x8000000000000000? What are the implications? And what about this (from 2017): https://github.com/Ruslan-B/FFmpeg.AutoGen/issues/55?

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test
by Mark Filipak 06 Feb '22

06 Feb '22

This is just a test of a new method to contact the list now that I can no longer spoof the "From" email header. Please excuse the interruption.

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