curioustorvald/tsvm
1
0
Fork 0
mirror of https://github.com/curioustorvald/tsvm.git synced 2026-03-07 19:51:51 +09:00
Code Issues Packages Projects Releases Wiki Activity

better threshold detection

Browse Source
This commit is contained in:
minjaesong
2025-04-19 11:48:52 +09:00
parent 47468e4395
commit 4e063fe08e
1 changed files with 11 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
assets/disk0/tvdos/bin/encodemov2.js
View File

@@ -1,19 +1,21 @@
// some manual configurations
//
let IPFMODE = 3 // 1 or 2
let TOTAL_FRAMES = 800
let FPS = 24 // must be integer
let TOTAL_FRAMES = 15347
let FPS = 30 // must be integer
let WIDTH = 560
let HEIGHT = 448
let PATHFUN = (i) => `C:/welkom/${(''+i).padStart(4,'0')}.png` // how can be the image file found, if a frame number (starts from 1) were given
let AUDIOTRACK = 'C:/welkom.pcm'
let AUDIOFORMAT = 'PCMu8' // undefined or PCMu8 or MP2fr
let PATHFUN = (i) => `C:/yain/${(''+i).padStart(5,'0')}.png` // how can be the image file found, if a frame number (starts from 1) were given
let AUDIOTRACK = 'C:/yain.mp2'
let AUDIOFORMAT = 'MP2fr' // undefined or PCMu8 or MP2fr
// to export video to its frames (with automatic scaling and cropping):
// ffmpeg -i file.mp4 -vf scale=560:448:force_original_aspect_ratio=increase,crop=560:448 file/%05d.png
//
// to convert audio to MP2:
// ffmpeg -i file.mp4 -acodec libtwolame -psymodel 4 -b:a <rate>k -ar 32000 output.mp2
//
const FPS_IS_NTSC = true // when set to true, every 1000th frame will be dropped
const KEYFRAME_DETECTION_THRESHOLD = 0.576
// end of manual configuration
let MP2_RATE_INDEX;
let MP2_PACKETSIZE;
@@ -173,8 +175,10 @@ for (let f = 1; ; f++) {
audioRemaining -= actualBytesToRead
}
}
if (FPS_IS_NTSC && f > 0 && f % 1000 == 0) {
}
// insert video frame
if (f <= TOTAL_FRAMES) {
else if (f <= TOTAL_FRAMES) {
let fname = PATHFUN(f)
let framefile = files.open(_G.shell.resolvePathInput(fname).full)
let fileLen = framefile.size
@@ -192,7 +196,7 @@ for (let f = 1; ; f++) {
// get the difference map
let patchEncodedSize = graphics.encodeIpf1d(ipfAreaOld, ipfAreaNew, ipfDelta, WIDTH, HEIGHT)
if (f < 2 || f == TOTAL_FRAMES || patchEncodedSize > WIDTH * HEIGHT * 0.70) patchEncodedSize = 0
if (f < 2 || f == TOTAL_FRAMES || patchEncodedSize > WIDTH * HEIGHT * KEYFRAME_DETECTION_THRESHOLD) patchEncodedSize = 0
// decide whether or not the patch encoding should be used
let gzlen = gzip.compFromTo(