#!/bin/bash

echo "delete previous capture..."
rm ./out/c64_capture.mp4

echo "starting capture..."
ffmpeg -f v4l2 -i /dev/video0 -f pulse -i default -c:v libx264 -framerate 25 -preset ultrafast -c:a aac -f tee -map 0:v -map 1:a "./out/c64_capture.mp4|[f=nut]pipe:" | ffplay pipe: &

# load improved settings (only has an effect if ffmpeg is already reading from /dev/video0 otherwise it always reverts to default settings)
echo "loading improved stick settings..."
# wait a bit to make sure ffmpeg and ffplay are already running
sleep 1
# (loading the settings shows error messages on console but the settings are changed as evident by looking at the captured video)
v4l2ctrl -d /dev/video0 -l stick_settings &

FFMPEGPID=`ps T | grep ffmpeg | awk '{ print $1 }'`
FFPLAYPID=`ps T | grep ffplay | awk '{ print $1 }'`

read -p "...................press any key to stop..................." -n1 -s

kill $FFMPEGPID
sleep 1
kill $FFPLAYPID

9963776:                     Brightness:500
9963777:                       Contrast:500
9963778:                     Saturation:750
9963779:                            Hue:0
9963803:                      Sharpness:128

import vapoursynth as vs
core = vs.get_core()
clip = core.ffms2.Source(source="./out/c64_capture.mp4")
clip = core.std.SeparateFields(clip=clip, tff=1) # also interleaves after separation
clip = core.std.Crop(clip=clip, left=12, right=24, top=4, bottom=4)
# scale up high for fine control over jitter removal
clip = core.resize.Spline36(clip=clip, width=2160, height=1728)
# get rid of line jitter between frames, by panning the odds
evens = core.std.SelectEvery(clip=clip, cycle=2, offsets=0)
odds = core.std.SelectEvery(clip=clip, cycle=2, offsets=1)
odds = core.std.AddBorders(clip=odds, bottom=2)
odds = core.std.Crop(clip=odds, top=2)
# put frames back together
clip = core.std.Interleave((odds,evens))
# cut off jitter
clip = core.std.Crop(clip=clip, bottom=2)
# resize to 1080p
clip = core.resize.Spline36(clip=clip, width=1350, height=1080, format=vs.YUV420P16)
clip.set_output()

#!/bin/bash
echo "extract audio..."
ffmpeg -i ./out/c64_capture.mp4 -c:a copy ./out/c64_capture_audio.aac
echo "transcode video..."
vspipe --y4m vapoursynth_c64.vpy - | ffmpeg -i pipe: -c:v libx264 -preset ultrafast -c:a aac ./out/c64_capture_video.mp4
echo "merge video and audio"
ffmpeg -i ./out/c64_capture_video.mp4 -i ./out/c64_capture_audio.aac -c:v copy -c:a copy ./out/c64_capture_deinterlaced.mp4
echo "remove intermediate files..."
rm ./out/c64_capture_audio.aac
rm ./out/c64_capture_video.mp4
echo "done"

# select s-video input on stick
v4l2-ctl -d /dev/video0 -i 1