[HELP] Shaky/Wobbly edges on a progressive 960x720 AVC file processed from DVD source

[alwaysnara]

Hello,
I'm seeking advice on how to fix a video quality issue with a file I processed (likely ripped/encoded) from an old Japanese anime DVD.
**The Problem:**
The edges of objects and characters appear very shaky and wobbly, especially during movement. It looks like some kind of motion artifact.

**Source File Specifications (from MediaInfo):**



Format                      : MPEG-4
Format profile              : Base Media
Codec ID                    : isom (isom/mp41)
File size                  : 340 MiB
Duration                    : 29 min 43 s
Overall bit rate            : 1 598 kb/s
Frame rate                  : 23.976 FPS
Encoded date                : 2008-09-25 19:09:15 UTC
Tagged date                : 2008-09-25 19:09:15 UTC

Video
ID                          : 1
Format                      : AVC
Format/Info                : Advanced Video Codec
Format profile              : High@L4.1
Format settings            : CABAC / 3 Ref Frames
Format settings, CABAC      : Yes
Format settings, Reference  : 3 frames
Codec ID                    : avc1
Codec ID/Info              : Advanced Video Coding
Duration                    : 29 min 43 s
Source duration            : 29 min 43 s
Bit rate                    : 1 334 kb/s
Width                      : 960 pixels
Height                      : 720 pixels
Display aspect ratio        : 4:3
Frame rate mode            : Constant
Frame rate                  : 23.976 (24000/1001) FPS
Standard                    : NTSC
Color space                : YUV
Chroma subsampling          : 4:2:0
Bit depth                  : 8 bits
Scan type                  : Progressive
Bits/(Pixel*Frame)          : 0.080
Stream size                : 284 MiB (83%)
Source stream size          : 298 MiB (88%)
Writing library            : AVC Coding
Language                    : English
Encoded date                : 2008-09-25 19:09:15 UTC
Tagged date                : 2008-09-25 19:09:15 UTC
Color range                : Limited
Color primaries            : BT.709
Transfer characteristics    : BT.709
Matrix coefficients        : BT.709
mdhd_Duration              : 1784159
Codec configuration box    : avcC

Audio
ID                          : 2
Format                      : AAC LC
Format/Info                : Advanced Audio Codec Low Complexity
Codec ID                    : mp4a-40-2
Duration                    : 29 min 43 s
Bit rate mode              : Constant
Bit rate                    : 192 kb/s
Nominal bit rate            : 128 kb/s
Channel(s)                  : 2 channels
Channel layout              : L R
Sampling rate              : 48.0 kHz
Frame rate                  : 46.875 FPS (1024 SPF)
Compression mode            : Lossy
Stream size                : 40.9 MiB (12%)
Language                    : English
Encoded date                : 2008-09-25 19:09:15 UTC
Tagged date                : 2008-09-25 19:09:15 UTC
mdhd_Duration              : 1785372

[Selur]

Would need a sample of the source to suggest anything.
AFK till tomorrow evening, but i can suggest something then.

[alwaysnara]

Hi, thank you for the reply.

I've uploaded a sample of the source file (unprocessed) that shows the wobbly edges clearly:


https://drive.google.com/file/d/1-2yrTbp...sp=sharing

[Selur]

The moving artifacts are dot crawlers (https://en.wikipedia.org/wiki/Dot_crawl).
=> try using DeCrawl->LUTDeCrawl and/or some of the other DeCrawl filters.

Cu Selur

[alwaysnara]

There was some improvement. thank you.

[Selur]

Another way would be to use BasicVSR++ with 'EdgeMask (Bloated)' and expand the mask by 1 or 2, but that requires an NVIDIA card. see: https://www.mediafire.com/file/1n6h1ir26...B.mp4/file
(+ I'm found a bug in the edge mask handling which is fixed in a dev version I'm uploading atm.)

Cu Selur