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Author Topic: Analysing video on import even though analyse video is unchecked  (Read 459 times)

mattkhan

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I did the following

* create clean library
* turned off sidecars
* configured autoimport to just import (i.e. unchecked all the analyse options in both folder settings and additional tasks)
* ran auto import

in the logs I can still see lines such as

Code: [Select]
0031678: 23544: Playback: CJRVideoAnalyzeExtended::AnalyzeFile: Using 'W:\Some\Film\BDMV\STREAM\00103.m2ts' as Blu-ray reference clip
0031732: 23544: Import: CJRVideoAnalyzeHelper::AnalyzeFileDX: Finish (31722 ms)

so it appears to have disregarded those choices and is running analysis anyway
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Hendrik

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Re: Analysing video on import even though analyse video is unchecked
« Reply #1 on: July 27, 2023, 06:26:17 pm »

The analysis checkbox only controls black bar detection, as the naming of the option should reflect, unless I missed it somewhere. Other metadata is always extracted (dimensions, fps, audio info, and all that), as it should only take a relatively short time. This has always been the case, the amount of data it reads has just been expanded.

Although for Blu-ray discs in particular its still slightly inefficient because it opens it first with DirectShow to get the basic metadata of the entire main title through LAV, and then re-opens a single clip with the new analysis for the other metadata. We should unify this at some point, which should speed it up, but currently its limited because the cross-platform video engine doesn't support Blu-rays. Judging from your log excerpt, most of the time is in the old DirectShow part (which hasn't changed for quite a while), because the extended analysis (the new part) only seems to take 54 milliseconds, while AnalyzeFileDX took 31 seconds.
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~ nevcairiel
~ Author of LAV Filters

mattkhan

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Re: Analysing video on import even though analyse video is unchecked
« Reply #2 on: July 28, 2023, 01:22:14 am »

you're right, I (mis)read "Analyse audio for video files" as "Analyse video files".

Any idea what that time (for the dx analysis) depends on? wondering how to make my auto import testing faster.
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Hendrik

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Re: Analysing video on import even though analyse video is unchecked
« Reply #3 on: July 28, 2023, 02:58:35 am »

Honestly I'm surprised its that slow, not sure why that is. Almost sounds like its hitting some kind of timeout.
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~ nevcairiel
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