You can't crop one side only, It will change the frame geometry, Crop according to an aspect ratio or mask replacing the cropped lines by black ones. 474 lines is non standard, Only software will recognize that resolution.
De-interlace, crop to ratio and resize to a higher resolution to avoid line artifacts such as moiré, For example if you want to crop the bottom 6 pixels, here is how it's done:
The aspect ratio for captures originated from analog tapes is 704:480 for NTSC (4:3 non square pixel), So h=(704/480)x474 = 695.2 or 696 the nearest even number. Your new resolution will be 696x474, resize this to 1440x1080 to avoid any artifacts, if you don't want resizing to a higher resolution just mask the 6 lines with black and call it a day.
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Last edited by Sharc; 25th Jun 2022 at 18:56.
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I tried your code and here is the result. Does it look right?
Code:General Complete name : capture-cropped-resized.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (isom/iso2/mp41) File size : 247 MiB Duration : 1 min 10 s Overall bit rate mode : Variable Overall bit rate : 29.6 Mb/s Writing application : Lavf57.79.100 Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Format Range@L8.5@Main Codec ID : hev1 Codec ID/Info : High Efficiency Video Coding Duration : 1 min 10 s Bit rate : 29.2 Mb/s Width : 640 pixels Height : 480 pixels Display aspect ratio : 4:3 Frame rate mode : Constant Frame rate : 23.976 (24000/1001) FPS Color space : YUV Chroma subsampling : 4:2:2 Bit depth : 8 bits Bits/(Pixel*Frame) : 3.964 Stream size : 244 MiB (99%) Writing library : x265 2.5+12-fcd9154fa4e2:[Windows][GCC 7.2.0][64 bit] 8bit+10bit+12bit Encoding settings : cpuid=1173503 / frame-threads=5 / wpp / no-pmode / no-pme / no-psnr / no-ssim / log-level=2 / input-csp=2 / input-res=640x480 / interlace=0 / total-frames=0 / level-idc=0 / high-tier=1 / uhd-bd=0 / ref=5 / no-allow-non-conformance / no-repeat-headers / annexb / no-aud / no-hrd / info / hash=0 / no-temporal-layers / open-gop / min-keyint=23 / keyint=250 / bframes=8 / b-adapt=2 / b-pyramid / bframe-bias=0 / rc-lookahead=40 / lookahead-slices=0 / scenecut=40 / no-intra-refresh / ctu=64 / min-cu-size=8 / rect / amp / max-tu-size=32 / tu-inter-depth=3 / tu-intra-depth=3 / limit-tu=4 / rdoq-level=2 / dynamic-rd=0.00 / no-ssim-rd / signhide / no-tskip / nr-intra=0 / nr-inter=0 / no-constrained-intra / strong-intra-smoothing / max-merge=4 / limit-refs=1 / limit-modes / me=3 / subme=4 / merange=57 / temporal-mvp / weightp / weightb / no-analyze-src-pics / deblock=0:0 / sao / no-sao-non-deblock / rd=6 / no-early-skip / rskip / no-fast-intra / no-tskip-fast / no-cu-lossless / b-intra / no-splitrd-skip / rdpenalty=0 / psy-rd=2.00 / psy-rdoq=1.00 / no-rd-refine / analysis-reuse-mode=0 / lossless / cbqpoffs=0 / crqpoffs=0 / rc=cqp / qp=4 / ipratio=1.40 / pbratio=1.30 / aq-mode=0 / aq-strength=0.00 / no-cutree / zone-count=0 / no-strict-cbr / qg-size=64 / no-rc-grain / qpmax=69 / qpmin=0 / no-const-vbv / sar=0 / overscan=0 / videoformat=5 / range=0 / colorprim=2 / transfer=2 / colormatrix=5 / chromaloc=0 / display-window=0 / max-cll=0,0 / min-luma=0 / max-luma=255 / log2-max-poc-lsb=8 / vui-timing-info / vui-hrd-info / slices=1 / opt-qp-pps / opt-ref-list-length-pps / no-multi-pass-opt-rps / scenecut-bias=0.05 / no-opt-cu-delta-qp / no-aq-motion / no-hdr / no-hdr-opt / no-dhdr10-opt / analysis-reuse-level=5 / scale-factor=0 / refine-intra=0 / refine-inter=0 / refine-mv=0 / no-limit-sao / ctu-info=0 Color range : Limited Matrix coefficients : BT.470 System B/G Codec configuration box : hvcC Audio ID : 2 Format : AAC LC Format/Info : Advanced Audio Codec Low Complexity Codec ID : mp4a-40-2 Duration : 1 min 10 s Duration_LastFrame : -10 ms Bit rate mode : Variable Bit rate : 366 kb/s Maximum bit rate : 576 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 : 3.06 MiB (1%) Default : Yes Alternate group : 1
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It's slightly out, but I don't think anybody would notice.
Unless you had a perfect circle on the screen to measure -
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I use the capture function of Movavi Video Editor for the HDMI dongle, the dongle does not handle the AR well, most converters are designed for gamers needs, to fill a widescreen.
But my best option now is: Panasonic DMR-ES35V > BlackMagicDesign Analog to SDI converter > Video Assist (Screen/Recorder) (file on flash card)Last edited by Eric-jan; 26th Jun 2022 at 16:57.
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