61 lines
2.2 KiB
TypeScript
61 lines
2.2 KiB
TypeScript
import { FfprobeData } from 'fluent-ffmpeg'
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import { CONFIG } from '@server/initializers/config'
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import { VIDEO_TRANSCODING_FPS } from '@server/initializers/constants'
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import { getMaxBitrate } from '@shared/core-utils'
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import {
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ffprobePromise,
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getAudioStream,
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getMaxAudioBitrate,
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getVideoStream,
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getVideoStreamBitrate,
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getVideoStreamDimensionsInfo,
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getVideoStreamFPS
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} from '@shared/ffmpeg'
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export async function canDoQuickTranscode (path: string, existingProbe?: FfprobeData): Promise<boolean> {
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if (CONFIG.TRANSCODING.PROFILE !== 'default') return false
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const probe = existingProbe || await ffprobePromise(path)
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return await canDoQuickVideoTranscode(path, probe) &&
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await canDoQuickAudioTranscode(path, probe)
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}
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export async function canDoQuickAudioTranscode (path: string, probe?: FfprobeData): Promise<boolean> {
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const parsedAudio = await getAudioStream(path, probe)
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if (!parsedAudio.audioStream) return true
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if (parsedAudio.audioStream['codec_name'] !== 'aac') return false
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const audioBitrate = parsedAudio.bitrate
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if (!audioBitrate) return false
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const maxAudioBitrate = getMaxAudioBitrate('aac', audioBitrate)
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if (maxAudioBitrate !== -1 && audioBitrate > maxAudioBitrate) return false
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const channelLayout = parsedAudio.audioStream['channel_layout']
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// Causes playback issues with Chrome
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if (!channelLayout || channelLayout === 'unknown' || channelLayout === 'quad') return false
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return true
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}
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export async function canDoQuickVideoTranscode (path: string, probe?: FfprobeData): Promise<boolean> {
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const videoStream = await getVideoStream(path, probe)
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const fps = await getVideoStreamFPS(path, probe)
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const bitRate = await getVideoStreamBitrate(path, probe)
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const resolutionData = await getVideoStreamDimensionsInfo(path, probe)
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// If ffprobe did not manage to guess the bitrate
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if (!bitRate) return false
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// check video params
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if (!videoStream) return false
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if (videoStream['codec_name'] !== 'h264') return false
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if (videoStream['pix_fmt'] !== 'yuv420p') return false
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if (fps < VIDEO_TRANSCODING_FPS.MIN || fps > VIDEO_TRANSCODING_FPS.MAX) return false
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if (bitRate > getMaxBitrate({ ...resolutionData, fps })) return false
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return true
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}
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