hello guys good afternoon, a favor if I want to create a 1080i from this video 4k (60 FPS), but be really a 1080i at 29.970, how could I create it in avisynth someone will have some example please, first time I try this. The point is to use the output file to create a real 1080i bluray.
Is interpolation necessary?
thanks for your help
this is the original source :
Code:Vídeo ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : Main@L5.2 Format settings : CABAC / 3 Ref Frames Format settings, CABAC : Sí Format settings, RefFrames : 3 fotogramas Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 3 h 9 min Source duration : 3 h 9 min Bit rate mode : Variable Bit rate : 35,0 Mb/s Width : 3 840 píxeles Height : 2 160 píxeles Display aspect ratio : 16:9 Frame rate mode : Variable Frame rate : 59,940 (59940/1000) FPS Minimum frame rate : 59,940 FPS Maximum frame rate : 60,000 FPS Original frame rate : 59,940 (60000/1001) FPS Standard : NTSC Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progresivo Bits/(Pixel*Frame) : 0.070 Stream size : 46,2 GiB (99%) Source stream size : 46,2 GiB (99%) Encoded date : UTC 2017-11-09 13:42:29 Tagged date : UTC 2017-11-09 13:53:24 Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709
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Should be quite straightforward... ???Resize (not too sharp) to 1080p; AssumeFrameBased; AssumeTFF; SeparateFields; SelectEvery(4, 0, 3); Weave. Possibly AssumeFPS(30000,1001): I believe Select does not reduce the frame rate. Encode interlaced (TFF).
The only point where I am not really sure is if the new fields should slightly bob by half a line height. -
Spline36Resize(1920,1080)
AssumeTFF()
SeparateFields()
SelectEvery(4,0,3)
Weave()
AssumeFPS("NTSC_video")- My sister Ann's brother -
It would be interesting how it is going to be comparable to HD 60p to DVD, because a certain degree of low pass was needed in that case, or special resize, or both. To avoid horizontal line flickering in the footage.
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I took a screenshot, maybe you can confirm if it would work, in the image has the info
thanks so much
https://forum.videohelp.com/images/imgfiles/RTRbOwq.jpg
by chance you will have at hand some method to do the inverse but in a real way with interpolation, etc.
let say to go from 23.976 or 29.970 = 60 FPS, so that it has greater fluidity, starting from a DVD NTSC or PAL for example to perform an upscale.
I tried a lot of scripts that are on the net, interframe, etc. but nothing really looks good... do you know any effective methods? -
Of course it will work. Just be sure to encode it interlaced, top field first.
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where I can encode it like this? I thought I'd put it in the virtualdub or simple x264 launcher,
How does the final script look, please?, and with which program I encode it.
thanks so much -
You need to add a source filter to the start of the script. If your source is mp4 try LSmashVideoSource(). Otherwise try LWlibavVideoSource(). Both are part of the LSMash plugin for AviSynth.
I use the x264 command line encoder where the option is "--tff" (for top field first video, --bff for bottom field first). I haven't used Simple x264 launcher -- I don't know if it supports interlaced encoding via the UI. But it appears to support custom encoding options. You probably want to enter --tff there.Last edited by jagabo; 10th Nov 2017 at 08:38.
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^ correction: "--tff"
VirtualDub-FilterMod supports x264 as internal encoder, and is able to output MP4. That could be a simple solution. Other advanced AviSynth based converters with technical focus and support for the x264 CLI encoder are StaxRip x64 and MeGUI. -
My personal advice is - don't go over HP@L4.0 and force BD compatibility - even less capable HW decoders should work fine with such settings.
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