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masterManifest.spec.js
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masterManifest.spec.js
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const equal = require('assert').deepEqual
const co = require('co')
const { clone, map } = require('ramda')
const { generateMasterManifest,
findMasterTargetDuration,
buildRenditionBlock,
getRenditionGOP,
getAppropriateBandwidth,
getRenditionSize
} = require('./masterManifest')
const { isSuccess } = require('consistent-failables/failable')
describe('masterManifest.js', function () {
jasmine.DEFAULT_TIMEOUT_INTERVAL = 10 * 1000
const expectedManifest = [
'#EXTM3U',
'#EXT-X-VERSION:4',
'#EXT-X-TARGETDURATION:2',
'#EXT-X-MEDIA-SEQUENCE:0',
'#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=359595,RESOLUTION=1024x768',
'1024x768.m3u8',
'#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=249300,RESOLUTION=848x640',
'848x640.m3u8',
'#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=217209,RESOLUTION=640x480',
'640x480.m3u8',
'#EXT-X-ENDLIST'
].join('\n')
const iFrames = [
{
pkt_dts_time: '0.000000',
pkt_pts_time: '0.000000',
pkt_pos: '40223',
pkt_size: '1222',
pict_type: 'I'
},
{
pkt_dts_time: '2.000000',
pkt_pts_time: '2.000000',
pkt_pos: '159174',
pkt_size: '4576',
pict_type: 'I'
},
{
pkt_dts_time: '4.000000',
pkt_pts_time: '4.000000',
pkt_pos: '224053',
pkt_size: '5503',
pict_type: 'I'
}
]
const bFrame = {
pkt_dts_time: '5.000000',
pkt_pts_time: '5.000000',
pkt_pos: '224053',
pkt_size: '5503',
pict_type: 'B'
}
const renditions = [
'./keyFrameRenditions/pluralsight1024x768Vid.mp4',
'./keyFrameRenditions/ps848x640.mp4',
'./keyFrameRenditions/ps640x480.mp4',
]
it('should add header tags', co.wrap(function * () {
const result = yield generateMasterManifest(renditions)
equal(isSuccess(result), true)
equal(result.payload, expectedManifest)
}))
describe('findMasterTargetDuration()', () => {
it('should return target duration tag with correct duration', () => {
const gop = 2
const renditionsWithGop = map(r => {
return {
video: r,
gop
}
}, renditions)
const result = findMasterTargetDuration(renditionsWithGop)([])
equal(result, [`#EXT-X-TARGETDURATION:${gop}`])
})
})
describe('buildRenditionBlock()', () => {
const rendition = {
video: renditions[0]
}
const height = 768
const width = 1024
rendition.dimensions = { width, height }
const resolution = `${width}x${height}`
const bandwidth = 500000
rendition.bandwidth = bandwidth
it('should build rendition line', () => {
const expectedBlock = [`#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=${bandwidth},RESOLUTION=${resolution}`, `${resolution}.m3u8`]
const result = buildRenditionBlock([rendition])([])
equal(result, expectedBlock)
})
})
describe('getAppropriateBandwidth()', () => {
it('should sum the audio and video stream bite_rates', co.wrap(function * () {
const rendition = { video: renditions[0] }
const result = yield getAppropriateBandwidth(rendition)
equal(isSuccess(result), true)
equal(result.payload, 359595)
}))
})
describe('getRenditionSize()', () => {
const height = 768
const width = 1024
it('should extract rendition dimensions', co.wrap(function * () {
const rendition = { video: renditions[0] }
const result = yield getRenditionSize(rendition)
equal(isSuccess(result), true)
equal(result.payload, { height, width })
}))
})
describe('getRenditionGOP()', () => {
it('should return all necessary data about renditions', co.wrap(function * () {
const rendition = { video: renditions[0] }
const result = yield getRenditionGOP(rendition)
equal(isSuccess(result), true)
equal(result.payload, 2)
}))
})
})
// http://stackoverflow.com/questions/30174236/creating-m3u8-file-that-points-to-other-m3u8-files
// #EXTM3U
// #EXT-X-VERSION:4
// #EXT-X-TARGETDURATION:7
// #EXT-X-MEDIA-SEQUENCE:4
// #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=500000,RESOLUTION=480x270
// 480x270.m3u8
// #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1000000,RESOLUTION=640x360
// 640x360.m3u8
// #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=2000000,RESOLUTION=1280x720
// 1280x720.m3u8
// #EXT-X-ENDLIST
// #EXT-X-STREAM-INF:BANDWIDTH=1193108,CODECS="avc1.77.30,mp4a.40.2",RESOLUTION=640x360,SUBTITLES="subs"
// 0640/0640.m3u8
// #EXT-X-STREAM-INF:BANDWIDTH=6807315,CODECS="avc1.580028,mp4a.40.2",RESOLUTION=1920x1080,SUBTITLES="subs"
// 1920/1920.m3u8
// #EXT-X-STREAM-INF:BANDWIDTH=4668760,CODECS="avc1.4d401f,mp4a.40.2",RESOLUTION=1280x720,SUBTITLES="subs"
// 1280/1280.m3u8
// #EXT-X-STREAM-INF:BANDWIDTH=2805788,CODECS="avc1.4d401f,mp4a.40.2",RESOLUTION=960x540,SUBTITLES="subs"
// 0960/0960.m3u8
// #EXT-X-STREAM-INF:BANDWIDTH=532635,CODECS="avc1.42c015,mp4a.40.5",RESOLUTION=480x270,SUBTITLES="subs"
// 0480/0480.m3u8