[HELP] Configure FFMPEG for best quality captures

PatchWorKs · 1st March 2023, 08:00

Hi everyone, we do need your kindly expertise to squeeze out the best possible quality from FFMPEG's capture function.

Our digitization rig is currently composed of i7-4790S/16Gb/Win11 + Blackmagic Intensity Pro + customized/modded Panasonic NV-HD630 (note that - unfortunally - it won't work under Linux V4L2's qv4l2 tool)

At the moment we have "cobbled together" this - ffplay - command line:

Code:

ffplay -rtbufsize 1G -pixel_format uyvy422 -framerate 25 -f dshow -i video="Decklink Video Capture":audio="Decklink Audio Capture" -aspect 4:3 -vf "scale=in_range=full:out_range=full,lut='y=(va l-16)*1.067',bwdif=mode=send_field:parity=auto:deint=all"

Result:

Thanks in advance to anyone that will help to optimize it.

Emulgator · 4th March 2023, 14:41

A sample uploaded to wetransfer.com maybe ?

PatchWorKs · 15th March 2023, 12:58

Sorry for the delay, but we received an SVHS VCR so we're testing it for captures.

Meantime here's the chatGPT-generated commandline:

Code:

ffmpeg -f dshow -i video="Your Capture Card Name" -f dshow -i audio="Your Audio Device Name" -c:v huffyuv -c:a pcm_s16le -pix_fmt yuv420p -preset ultrafast -bufsize 2G -filter:v bwdif=mode=send_field -q:v 0 -f matroska output.mkv

The funny chat:

1st March 2023, 08:00	#1 \| Link
PatchWorKs Registered User Join Date: Aug 2002 Location: Italy Posts: 288	[HELP] Configure FFMPEG for best quality captures Hi everyone, we do need your kindly expertise to squeeze out the best possible quality from FFMPEG's capture function. Our digitization rig is currently composed of i7-4790S/16Gb/Win11 + Blackmagic Intensity Pro + customized/modded Panasonic NV-HD630 (note that - unfortunally - it won't work under Linux V4L2's qv4l2 tool) At the moment we have "cobbled together" this - ffplay - command line: Code: ffplay -rtbufsize 1G -pixel_format uyvy422 -framerate 25 -f dshow -i video="Decklink Video Capture":audio="Decklink Audio Capture" -aspect 4:3 -vf "scale=in_range=full:out_range=full,lut='y=(va l-16)*1.067',bwdif=mode=send_field:parity=auto:deint=all" Result: Thanks in advance to anyone that will help to optimize it. __________________ HYbrid Multimedia Production Suite page @ GitHub

4th March 2023, 14:41	#2 \| Link
Emulgator Big Bit Savings Now ! Join Date: Feb 2007 Location: close to the wall Posts: 1,359	A sample uploaded to wetransfer.com maybe ? __________________ "To bypass shortcuts and find suffering...is called QUALity" (Die toten Augen von Friedrichshain) "Data reduction ? Yep, Sir. We're working on that issue. Synce invntoin uf lingöage..."

15th March 2023, 12:58	#3 \| Link
PatchWorKs Registered User Join Date: Aug 2002 Location: Italy Posts: 288	Sorry for the delay, but we received an SVHS VCR so we're testing it for captures. Meantime here's the chatGPT-generated commandline: Code: ffmpeg -f dshow -i video="Your Capture Card Name" -f dshow -i audio="Your Audio Device Name" -c:v huffyuv -c:a pcm_s16le -pix_fmt yuv420p -preset ultrafast -bufsize 2G -filter:v bwdif=mode=send_field -q:v 0 -f matroska output.mkv The funny chat: __________________ HYbrid Multimedia Production Suite page @ GitHub Last edited by PatchWorKs; 15th March 2023 at 13:03.

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