AWS MediaConvert를 이용한 VOD 서비스 개발

개요

역할 생성

Lambda 함수 생성

람다 코드 작성

import glob
import json
import os
import uuid
import boto3
import datetime
import random
from urllib.parse import urlparse
import logging

from botocore.client import ClientError

logger = logging.getLogger()
logger.setLevel(logging.INFO)

S3 = boto3.resource('s3')

def lambda_handler(event, context):
    mediaConvertRole = "arn:aws:iam::...."
    application = "VOD"
    region = "ap-northeast-2"

    assetID = str(uuid.uuid4())

    statusCode = 200
    jobs = []
    job = {}

    sourceS3Bucket = event["BucketFrom"]
    sourceS3Key = event["Filename"]
    sourceS3 = 's3://'+ sourceS3Bucket + '/' + sourceS3Key
    startTimecode = event["StartTimecode"]
    endTimecode = event["EndTimecode"]

    destS3Bucket = event["BucketTo"]
    destinationS3 = 's3://' + destS3Bucket + '/encoded/' + sourceS3Key[:sourceS3Key.rfind('/')+1]

    jobMetadata = {}
    jobMetadata['assetID'] = assetID
    jobMetadata['application'] = application
    jobMetadata['input'] = sourceS3
    jobMetadata['settings'] = 'Default'

    try:
        jobInput = {}
        bucket = S3.Bucket(sourceS3Bucket)

        with open('params.json') as json_data:
            jobInput['settings'] = json.load(json_data)
            jobs.append(jobInput)

        mediaconvert_client = boto3.client('mediaconvert', region_name=region)
        endpoints = mediaconvert_client.describe_endpoints()

        client = boto3.client('mediaconvert', region_name=region, endpoint_url=endpoints['Endpoints'][0]['Url'], verify=False)

        for j in jobs:
            jobSettings = j['settings']
            jobSettings['Inputs'][0]['FileInput'] = sourceS3
            jobSettings['Inputs'][0]['InputClippings'][0]["StartTimecode"] = startTimecode
            jobSettings['Inputs'][0]['InputClippings'][0]["EndTimecode"] = endTimecode
            for outputGroup in jobSettings['OutputGroups']:
                if outputGroup['OutputGroupSettings']['Type'] == 'FILE_GROUP_SETTINGS':
                    outputGroup['OutputGroupSettings']['FileGroupSettings']['Destination'] = destinationS3
                elif outputGroup['OutputGroupSettings']['Type'] == 'HLS_GROUP_SETTINGS':
                    outputGroup['OutputGroupSettings']['HlsGroupSettings']['Destination'] = destinationS3
                elif outputGroup['OutputGroupSettings']['Type'] == 'DASH_ISO_GROUP_SETTINGS':
                    outputGroup['OutputGroupSettings']['DashIsoGroupSettings']['Destination'] = destinationS3
                elif outputGroup['OutputGroupSettings']['Type'] == 'DASH_ISO_GROUP_SETTINGS':
                    outputGroup['OutputGroupSettings']['DashIsoGroupSettings']['Destination'] = destinationS3
                elif outputGroup['OutputGroupSettings']['Type'] == 'MS_SMOOTH_GROUP_SETTINGS':
                    outputGroup['OutputGroupSettings']['MsSmoothGroupSettings']['Destination'] = destinationS3
                else:
                    logger.error("Exception: Unknown Output Group Type %s", outputGroup['OutputGroupSettings']['Type'])
                    statusCode = 500

            job = client.create_job(Role=mediaConvertRole, UserMetadata=jobMetadata, Settings=jobSettings)
    except Exception as e:
        logger.error('Exception: %s', e)
        statusCode = 500
        raise

    finally:
        return {
            'statusCode': statusCode,
            'body': json.dumps(job, indent=4, sort_keys=True, default=str),
            'headers': {'Content-Type': 'application/json', 'Access-Control-Allow-Origin': '*'}
        }

인코딩 파라메터 템플릿 작성

{
    "OutputGroups": [
        {
            "CustomName": "HLS",
            "Name": "Apple HLS",
            "Outputs": [
                {
                    "ContainerSettings": {
                        "Container": "M3U8",
                        "M3u8Settings": {}
                    },
                    "VideoDescription": {
                        "CodecSettings": {
                            "Codec": "H_264",
                            "H264Settings": {
                                "MaxBitrate": 3000000,
                                "RateControlMode": "QVBR",
                                "SceneChangeDetect": "TRANSITION_DETECTION"
                            }
                        }
                    },
                    "AudioDescriptions": [
                        {
                            "CodecSettings": {
                                "Codec": "AAC",
                                "AacSettings": {
                                    "Bitrate": 96000,
                                    "CodingMode": "CODING_MODE_2_0",
                                    "SampleRate": 48000
                                }
                            }
                        }
                    ],
                    "OutputSettings": {
                        "HlsSettings": {}
                    },
                    "NameModifier": "_high"
                },
                {
                    "ContainerSettings": {
                        "Container": "M3U8",
                        "M3u8Settings": {}
                    },
                    "VideoDescription": {
                        "CodecSettings": {
                            "Codec": "H_264",
                            "H264Settings": {
                                "MaxBitrate": 2000000,
                                "RateControlMode": "QVBR",
                                "SceneChangeDetect": "TRANSITION_DETECTION"
                            }
                        }
                    },
                    "AudioDescriptions": [
                        {
                            "CodecSettings": {
                                "Codec": "AAC",
                                "AacSettings": {
                                    "Bitrate": 96000,
                                    "CodingMode": "CODING_MODE_2_0",
                                    "SampleRate": 48000
                                }
                            }
                        }
                    ],
                    "OutputSettings": {
                        "HlsSettings": {}
                    },
                    "NameModifier": "_medium"
                },
                {
                    "ContainerSettings": {
                        "Container": "M3U8",
                        "M3u8Settings": {}
                    },
                    "VideoDescription": {
                        "CodecSettings": {
                            "Codec": "H_264",
                            "H264Settings": {
                                "MaxBitrate": 1000000,
                                "RateControlMode": "QVBR",
                                "SceneChangeDetect": "TRANSITION_DETECTION"
                            }
                        }
                    },
                    "AudioDescriptions": [
                        {
                            "CodecSettings": {
                                "Codec": "AAC",
                                "AacSettings": {
                                    "Bitrate": 96000,
                                    "CodingMode": "CODING_MODE_2_0",
                                    "SampleRate": 48000
                                }
                            }
                        }
                    ],
                    "OutputSettings": {
                        "HlsSettings": {}
                    },
                    "NameModifier": "_low"
                }
            ],
            "OutputGroupSettings": {
                "Type": "HLS_GROUP_SETTINGS",
                "HlsGroupSettings": {
                    "SegmentLength": 10,
                    "MinSegmentLength": 0
                }
            }
        }
    ],
    "Inputs": [
        {
            "InputClippings": [
                {
                    "EndTimecode": "00:00:00:00",
                    "StartTimecode": "00:00:00:00"
                }
            ],
            "AudioSelectors": {
                "Audio Selector 1": {
                    "Offset": 0,
                    "DefaultSelection": "DEFAULT",
                    "ProgramSelection": 1
                }
            },
            "VideoSelector": {
                "ColorSpace": "FOLLOW"
            },
            "FilterEnable": "AUTO",
            "PsiControl": "USE_PSI",
            "FilterStrength": 0,
            "DeblockFilter": "DISABLED",
            "DenoiseFilter": "DISABLED",
            "TimecodeSource": "ZEROBASED",
            "FileInput": ""
        }
    ]
}

테스트 이벤트

{
    "BucketFrom": "rodeolabz-us-west-2",
    "BucketTo": "인코딩 후 저장될 버킷 이름",
    "Filename": "vodconsole/TRAILER.mp4",
    "StartTimecode": "00:00:00:00",
    "EndTimecode": "00:10:00:00"
}