Deinterlace 29.970 Interlaced DVD

[pstnnn]

Hi,

I have a very rare DVD I would like to backup properly processed, below is the MediaInfo section relevant to the video. Could anyone tell me what processing I should do to it? I would like to use ffmpeg or handbrake (I'm on linux). Should I be using a deinterlace filter that changes the frame rate? I did some googling, and basically every thread contradicts itself.

Here is a sample https://workupload.com/file/XShefM3kyXd

Thank you!

Video
ID : 1
ID in the original source medium : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings : CustomMatrix / BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : M=3, N=15
Format settings, picture structure : Frame
Codec ID : V_MPEG2
Codec ID/Info : MPEG 1 or 2 Video
Duration : 22 min 8 s
Bit rate mode : Constant
Bit rate : 8 000 kb/s
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.772
Time code of first frame : 10:00:07;11
Time code source : Group of pictures header
GOP, Open/Closed : Closed
Stream size : 1.24 GiB (98%)
Language : English
Default : No
Forced : No
Original source medium : DVD-Video

[hello_hello]

It appears to be telecined but it's a bit of a disaster for some reason. In theory all you should need to do is enable Handbrake's detelecine filter and nothing else, and set the output to a constant frame rate of 23.976. There's a lot of aliasing and shimmering going on though. I had a crack at it using Avisynth but that wasn't much more successful.

[pstnnn]

It appears to be telecined but it's a bit of a disaster for some reason. In theory all you should need to do is enable Handbrake's detelecine filter and nothing else, and set the output to a constant frame rate of 23.976. There's a lot of aliasing and shimmering going on though. I had a crack at it using Avisynth but that wasn't much more successful.

thank you so much for taking the time to look through it.

Do these look right to you? --detelecine --rate 23.976 --cfr

While encoding:

+ filters
[12:33:23] + Detelecine (pullup) (skip-left=1: skip-right=1: skip-top=4: skip-bottom=4: plane=0)
[12:33:23] + Framerate Shaper (mode=1:rate=27000000/1126125)
[12:33:23] + frame rate: 29.970 fps -> constant 23.976 fps


Thanks!

[Sharc]

In ffmpeg try

ffmpeg -i "output.mkv" -an -c:v libx264 -preset slow -crf 18 -pix_fmt yuv420p -vf fps=30000/1001,fieldmatch,yadif=deint=interlaced,decimate "IVTC_.mp4"

[pstnnn]

In ffmpeg try

ffmpeg -i "output.mkv" -an -c:v libx264 -preset slow -crf 18 -pix_fmt yuv420p -vf fps=30000/1001,fieldmatch,yadif=deint=interlaced,decimate "IVTC_.mp4"

Thank you!! Giving it a try as we speak. is this output normal?

[Parsed_fieldmatch_1 @ 0x557130774180] Frame #1539 at 51.3513 is still interlaced dup=1 drop=0 speed=5.51x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3087 at 103.003 is still interlaced dup=1 drop=0 speed=5.27x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3088 at 103.036 is still interlaced
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3148 at 105.038 is still interlaced dup=1 drop=0 speed=5.23x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3149 at 105.072 is still interlaced

[Sharc]

In ffmpeg try

ffmpeg -i "output.mkv" -an -c:v libx264 -preset slow -crf 18 -pix_fmt yuv420p -vf fps=30000/1001,fieldmatch,yadif=deint=interlaced,decimate "IVTC_.mp4"

Thank you!! Giving it a try as we speak. is this output normal?

[Parsed_fieldmatch_1 @ 0x557130774180] Frame #1539 at 51.3513 is still interlaced dup=1 drop=0 speed=5.51x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3087 at 103.003 is still interlaced dup=1 drop=0 speed=5.27x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3088 at 103.036 is still interlaced
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3148 at 105.038 is still interlaced dup=1 drop=0 speed=5.23x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3149 at 105.072 is still interlaced

The source has few hiccups I think. The result should nevertheless be "ok" I would assume. Check it.

For more info about the options and tweaks of fieldmatching see the ffmpeg doc:
https://ffmpeg.org/ffmpeg-filters.html#fieldmatch

[pstnnn]

In ffmpeg try

ffmpeg -i "output.mkv" -an -c:v libx264 -preset slow -crf 18 -pix_fmt yuv420p -vf fps=30000/1001,fieldmatch,yadif=deint=interlaced,decimate "IVTC_.mp4"

Thank you!! Giving it a try as we speak. is this output normal?

[Parsed_fieldmatch_1 @ 0x557130774180] Frame #1539 at 51.3513 is still interlaced dup=1 drop=0 speed=5.51x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3087 at 103.003 is still interlaced dup=1 drop=0 speed=5.27x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3088 at 103.036 is still interlaced
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3148 at 105.038 is still interlaced dup=1 drop=0 speed=5.23x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3149 at 105.072 is still interlaced

The source has few hiccups I think. The result should nevertheless be "ok" I would assume. Check it.

For more info about the options and tweaks of fieldmatching see the ffmpeg doc:
https://ffmpeg.org/ffmpeg-filters.html#fieldmatch

thanks mate, i really appreciate the help