djkato/Discord-Media-Compressor-sub-8mb
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removed params, cleanup

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Djkato 2022-06-19 02:29:02 +02:00
parent bc1ecdd7e8
commit 64610714f1
1 changed files with 53 additions and 58 deletions
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111
lib/encoder.js
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@ -2,14 +2,10 @@ const { exec } = require('child_process')
const termkit = require('terminal-kit')
class Encoder {
currentSetting
settings
encoder
encodePresetIndexArg
constructor(settings, currentSetting, encodePresetIndexArg = undefined) {
constructor(settings, currentSetting) {
this.settings = settings
this.currentSetting = currentSetting
this.encodePresetIndexArg = encodePresetIndexArg
}
/**
@ -51,89 +47,88 @@ class Encoder {
async #constructVideoCommand(path, out) {
let [duration, resolutionHeight] = await this.#getDurationAndResolution(path)
//Calculates video bitrate to fit right under 8mb 1:7 audio:video. 8Mb * 8 = 64000(8mb) - 1000 for overhead, *0.97 to leave space for container.
//Calculates video bitrate to fit right under 8mb 1:7 audio:video. 8Mb * 8 = 64000(8mb) - 1000 for overhead, *0.95 to leave space for container.
const maxOpusBitrate = 256 //kbits
let audioBitRate = Math.round((62000 / 8 * 1 / duration) * 0.97)
let videoBitRate = Math.round((62000 / 8 * 7 / duration) * 0.97)
let audioBitRate = Math.round((this.settings.size_limit / 8 * 1 / duration) * 0.95)
let videoBitRate = Math.round((this.settings.size_limit / 8 * 7 / duration) * 0.95)
//if maxOpusBitrate reached, cap the audio bit rate and give the rest of the bits to video
if (audioBitRate > maxOpusBitrate) {
videoBitRate += audioBitRate - maxOpusBitrate
audioBitRate = maxOpusBitrate
}
//if command had argument of anotehr quality setting change to use that setting
if (this.encodePresetIndexArg) {
this.currentSetting = this.settings.presets[this.encodePresetIndexArg]
}
let command = ""
let isTwoPass = true
/* REMOVING CRF AS ITS NO LONGER USED -- REPLACE WITH -qmin equivalent
let outputHeight
//resolution limiter based on video length.
resolutionHeight >= 480 && duration > 900 ?
outputHeight = 480 :
resolutionHeight >= 720 && duration > 600 ?
outputHeight = 720 :
resolutionHeight >= 1080 && duration > 150 ?
outputHeight = 1080 : outputHeight = resolutionHeight
//Compares current video height to CRFMAP to determine optimal CRF
while (resolutionHeight > this.currentSetting.crfMap[crfIndex].resolution) {
crfIndex++
//if the resolution is still higher, just use highest res
if (!this.currentSetting.crfMap[crfIndex]?.resolution) {
crfIndex--
break
}
}
*/
//realtime doesnt support two pass, so just use real time settings
if (this.currentSetting.deadline == "realtime") {
command += `ffmpeg -y -i "${path}" -vcodec libvpx-vp9 -acodec libopus `
command += `-deadline ${this.currentSetting.deadline} `
command += `-quality ${this.currentSetting.deadline} `
command += `-cpu-used ${this.currentSetting.cpuUsed} `
command += `-undershoot-pct 0 -overshoot-pct 0 `
command += `-b:v ${Math.round(videoBitRate / 100 * this.currentSetting.bitrateError)}k `
command += `-minrate ${Math.round(videoBitRate * 0.5)}k `
command += `-maxrate ${Math.floor(videoBitRate * 1.4)}k `
command += `-b:a ${audioBitRate}k `
command += `-tile-columns 2 -threads 6 `
command += `-qmax 60 `
command += `-g 240 `
command += `-row-mt 1 "${out}.webm" `
//console.log(command)
return [command, duration, false]
}
//realtime doesnt support two pass, so just use real time settings
/**
* REMOVING SUPPORT FOR REALTIME, IMPOSSIBLE TO HAVE RT SPEED AND AIM AT 8MB
*
*/
// if (this.currentSetting.deadline == "realtime") {
// command += `ffmpeg -y -i "${path}" -vcodec libvpx-vp9 -acodec libopus `
// command += `-deadline ${this.currentSetting.deadline} `
// command += `-quality ${this.currentSetting.deadline} `
// command += `-cpu-used ${this.currentSetting.cpuUsed} `
// command += `-undershoot-pct 0 -overshoot-pct 0 `
// command += `-b:v ${Math.round(videoBitRate / 100 * this.currentSetting.bitrateError)}k `
// command += `-minrate ${Math.round(videoBitRate * 0.5)}k `
// command += `-maxrate ${Math.floor(videoBitRate * 1.4)}k `
// command += `-b:a ${audioBitRate}k `
// command += `-tile-columns 2 -threads 6 `
// command += `-qmax 60 `
// command += `-g 240 `
// command += `-row-mt 1 "${out}.webm" `
// //console.log(command)
// return [command, duration, false]
// }
//Pass 1 force to have good deadline and cpu-used 1
command += `ffmpeg -y -i "${path}" -vcodec libvpx-vp9 -acodec libopus `
command += `-vf scale=-1:${outputHeight} `
command += `-deadline good `
command += `-quality good `
command += `-cpu-used 1 `
command += `-cpu-used 0 `
command += `-undershoot-pct 0 -overshoot-pct 0 `
command += `-b:v ${Math.round(videoBitRate / 100 * this.currentSetting.bitrateError)}k `
command += `-b:v ${Math.round(videoBitRate)}k `
command += `-minrate ${Math.round(videoBitRate * 0.5)}k `
command += `-maxrate ${Math.floor(videoBitRate * 1.2)}k `
command += `-maxrate ${Math.floor(videoBitRate * 1.45)}k `
command += `-b:a ${audioBitRate}k `
command += `-row-mt 1 -tile-rows 2 `
command += `-tile-columns 4 -threads 32 `
command += `-auto-alt-ref 6 `
command += `-qmax 60 `
command += `-g 240 `
command += `-row-mt 1 -pass 1 -f webm NUL && `
command += `-pass 1 -f webm NUL && `
//Pass 2 take in settings
command += `ffmpeg -y -i "${path}" -vcodec libvpx-vp9 -acodec libopus `
command += `-deadline ${this.currentSetting.deadline} `
command += `-quality ${this.currentSetting.deadline} `
command += `-cpu-used ${this.currentSetting.cpuUsed} `
command += `-vf scale=-1:${outputHeight} `
command += `-deadline good `
command += `-quality good `
command += `-cpu-used 0 `
command += `-undershoot-pct 0 -overshoot-pct 0 `
command += `-b:v ${Math.round(videoBitRate / 100 * this.currentSetting.bitrateError)}k `
command += `-b:v ${Math.round(videoBitRate)}k `
command += `-minrate ${Math.round(videoBitRate * 0.5)}k `
command += `-maxrate ${Math.floor(videoBitRate * 1.4)}k `
command += `-maxrate ${Math.floor(videoBitRate * 1.45)}k `
command += `-b:a ${audioBitRate}k `
command += `-tile-columns 2 -threads 6 `
command += `-row-mt 1 -tile-rows 2 `
command += `-tile-columns 4 -threads 32 `
command += `-auto-alt-ref 6 `
command += `-qmax 60 `
command += `-g 240 `
command += `-row-mt 1 -pass 2 "${out}.webm" `
//console.log(command)
return [command, duration, isTwoPass]
command += `-pass 2 "${out}.webm" `
return [command, duration]
}
async #getDurationAndResolution(file) {
@ -144,8 +139,8 @@ class Encoder {
const seconds = arr[0] * 3600 + arr[1] * 60 + (+arr[2]) // converting to s
//resolution height
const resolutionHeight = query.split("Stream #0:0")[1]?.split(",")[2].split(" ")[1].split("x")[1]
let resolutionHeight = query.split("Stream #0:0")[1].split("kb/s")[0].split(",")
resolutionHeight = Number.parseInt(resolutionHeight[resolutionHeight.length - 2].split("x")[1])
return [Number.parseFloat(seconds), resolutionHeight]
}