[FFmpeg-user] repair black frames?

Gyan Doshi ffmpeg at gyani.pro
Sun Oct 25 18:33:35 EET 2020

On 25-10-2020 08:56 pm, Michael Koch wrote:
> Am 25.10.2020 um 16:23 schrieb Simon Roberts:
>> Greetings all,
>> I have just noticed that some of my video recordings have a few random
>> black frames in them. These will be spaced out a few minutes, don't 
>> seem to
>> have any obvious cause (though my recording system is a little Heath
>> Robinson / Rube Goldberg, so I have some ideas)
>> Anyway, the thought occurred to me that rather than watching, never
>> blinking, all the material, and looking for this "manually", ffmpeg 
>> might
>> be able to help.
>> The solution I have in mind would probably be something that 
>> recognizes a
>> black frame (I *think* it's "pure" black, but I don't have numbers) and
>> replaces it with the immediately preceding or following frame).
>> Does such a filter exist, or could such behavior be tied together out of
>> the features that ffmpeg has?
> search for "blackdetect" in the documentation

See https://video.stackexchange.com/q/23589/ for a starting point.


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