Re: Unable to identify flicker video

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Re: Unable to identify flicker video

saurav suman
Hi Team,

I have downloaded the latest FFmpeg.exe file from the FFmpeg website. The
problem is FFmpeg is unable to identify the flickers present in the video.
Flicker present in the video is clearly visible by the naked eye.

If required, I can share the recorded file.

Regards,
Saurav
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Re: Unable to identify flicker video

Moritz Barsnick
On Tue, Apr 09, 2019 at 12:04:08 +0530, saurav suman wrote:

> The problem is FFmpeg is unable to identify the flickers present in
> the video. Flicker present in the video is clearly visible by the
> naked eye.

Please show us the actual ffmpeg command line you used, and its
complete, uncut console output (text copy, not screenshot, please).
This is to help understand what you are doing, and furthermore ffmpeg
provides a lot of useful information in its logs.

> If required, I can share the recorded file.

Feel free to upload the input file to a file sharer of your choice (or
Google Drive, Dropbox, whatever) and provide the link here.

Thanks,
Moritz
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Re: Unable to identify flicker video

kumowoon1025
In reply to this post by saurav suman


> On Apr 9, 2019, at 2:34 AM, saurav suman <[hidden email]> wrote:
>
> Hi Team,
>
> I have downloaded the latest FFmpeg.exe file from the FFmpeg website. The
> problem is FFmpeg is unable to identify the flickers present in the video.
> Flicker present in the video is clearly visible by the naked eye.
>
> If required, I can share the recorded file.
>
> Regards,
> Saurav

Can you elaborate on what a flicker is, exactly? Also what you mean by identifying them.
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Re: Unable to identify flicker video

Bouke / VideoToolShed


> On 09 Apr 2019, at 21:06, Ted Park <[hidden email]> wrote:
>
>
>
>> On Apr 9, 2019, at 2:34 AM, saurav suman <[hidden email]> wrote:
>>
>> Hi Team,
>>
>> I have downloaded the latest FFmpeg.exe file from the FFmpeg website. The
>> problem is FFmpeg is unable to identify the flickers present in the video.
>> Flicker present in the video is clearly visible by the naked eye.
>>
>> If required, I can share the recorded file.
>>
>> Regards,
>> Saurav
>
> Can you elaborate on what a flicker is, exactly? Also what you mean by identifying them.

The OP may be referring to the Harding test.
(There was a Simpons episode situated in Japan where everyone but Homer suffered from the consequences.)
https://en.wikipedia.org/wiki/Harding_test <https://en.wikipedia.org/wiki/Harding_test>

A testfile that fails the test is here:
Download link
https://videotoolshed.wetransfer.com/downloads/1f40e9977b12f800e4062e939d7178e720190410070204/3ac8160692f3d57b88b7c430987e269720190410070204/077992 <https://videotoolshed.wetransfer.com/downloads/1f40e9977b12f800e4062e939d7178e720190410070204/3ac8160692f3d57b88b7c430987e269720190410070204/077992>

(Sadly, i have no ide where it fails, it is not per definition the strobe shots at the end.)

Bouke


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Re: Unable to identify flicker video

Carl Eugen Hoyos-2
2019-04-10 9:04 GMT+02:00, Bouke / VideoToolShed <[hidden email]>:

> The OP may be referring to the Harding test.

This would be ticket #2104 with a link to a possible future
video filter.

Carl Eugen
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Re: Unable to identify flicker video

Bouke / VideoToolShed

> On 10 Apr 2019, at 12:40, Carl Eugen Hoyos <[hidden email]> wrote:
>
> 2019-04-10 9:04 GMT+02:00, Bouke / VideoToolShed <[hidden email]>:
>
>> The OP may be referring to the Harding test.
>
> This would be ticket #2104 with a link to a possible future
> video filter.
>

My gut feeling tells me that a custom scene detect setting will do the trick just fine.
but a -scene_detect=harding preset would be nice :-)


Bouke

> Carl Eugen
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