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There is a way to add some audio filters to Hybrid? - Printable Version

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There is a way to add some audio filters to Hybrid? - Bartoloni - 18.05.2023

i have a lot of VHS that have a small high pitch noise from the camcorder motor... and i can easly remove this on video editing..
BUT... it's possible to add an audio denoiser to Hybrid just to not "touch" again the footage after the compression?

or i need to use FFMPEG before hybrid to remove the noise.. and after this step use Hybrid?

Thnak you in advance for any help

RE: There is a way to add some audio filters to Hybrid? - Selur - 18.05.2023

Hybrid uses sox (see: https://sox.sourceforge.net/sox.html) for audio filtering.
In theory, I can add any filter method sox supports.
So, if you figure out how to remove your problem through sox I can add support for it in Hybrid.

Cu Selur

RE: There is a way to add some audio filters to Hybrid? - Bartoloni - 18.05.2023

(18.05.2023, 16:00)Selur Wrote: I can add support for it in Hybrid.

i saw that is possible to create a noise profile to make SOX remove the nosie.. but seems a little bit complicated.
BTW very thank you for the answer

RE: There is a way to add some audio filters to Hybrid? - Bartoloni - 03.07.2023

just for a "future" reference:

i removed statics using ffmpeg:

ffmpeg -i input.mp4 -af "afftdn=nf=-25" -c:v copy output.mp4

(a second pass make the sound too metallic... but can also help)

and after that i removed the whistle from camcorder motor that was from 2.3Khz to 2.9hz (maximum spike at 2.65Khz)
using sox as suggested by Selur .. (extracting an mp3 from mp4)

sox input.mp3 output.mp3 sinc 2.9k-2.3k

this make the camcorder noise to disappear (removing also some voice frequencies... but better than original)

P.S. the afftdn filter can be nice if can be added to hybrid's filters list

RE: There is a way to add some audio filters to Hybrid? - Selur - 09.07.2023

Depending on the noise, using noise profiling (noiseprof + noisered) might be worth to look into.
see: https://sox.sourceforge.net/sox.html
I'll try to look at https://ffmpeg.org/ffmpeg-filters.html#afftdn next week, seems to have tons of options.

Cu Selur