"format": "m4f"およびを使用します"streaming_delivery_format": "hls"。メディアを別々のセグメントファイルではなく"byte_range_segmenting": true、単一の断片化された MP4 ファイルとしてフォーマットするように設定することを強くお勧めします。{
"skip_audio": true,
"base_url": "s3://my-bucket/",
"decoder_bitrate_cap": 900,
"decoder_buffer_size": 2400,
"filename": "file-640k.m3u8",
"max_frame_rate": 30,
"public": 1,
"type": "segmented",
"video_bitrate": 600,
"width": 400,
"format": "m4f",
"streaming_delivery_format" : "hls",
"byte_range_segmenting" : "true",
"max_hls_protocol_version" : 7
}暗号化
Zencoder は、CBCS で暗号化された断片化された MP4、Fairplay DRM との統合に必要なヘッダーを持つ HLS 出力の生成もサポートしています。出力ごとに、暗号化オプションを指定します。これらのキーを取得すると、単一レンディションの Zencoder API 構造は次のようになります。
{
"input": "http://s3.amazonaws.com/zencodertesting/test.mov",
"outputs": [
{
"skip_audio": true,
"base_url": "s3://my-bucket/",
"decoder_bitrate_cap": 900,
"decoder_buffer_size": 2400,
"filename": "file-640k.m3u8",
"max_frame_rate": 30,
"public": 1,
"type": "segmented",
"video_bitrate": 600,
"width": 400,
"format": "m4f",
"streaming_delivery_format" : "hls",
"max_hls_protocol_version" : 7,
"byte_range_segmenting" : "true",
"drm_method" : "fairplay",
"encryption_method": "cbcs",
"encryption_key_url":"http://example.com/encryption.key",
"encryption_key": "a5f6a7d6ef5d6a7a02a23dd35dd56a63",
"encryption_iv" : "6345216ef5d6a7a02a23dd35d456987"
}
]
}備考
- 再生リストの生成中は、オーディオのみ、ビデオのみのセグメント化された出力を行い、代替オーディオを使用することをお勧めします。
- プレイリスト出力では、
tsm4fミックスと出力を行わないでください（オーディオビデオの同期の問題が発生します）。 - 断片化された mp4 HLS 出力のキャプションは、zencoder ではまだサポートされていません。
完全な例
プレイリストでは、異なるビットレートの複数の出力を指定し、参照することができます。これらの設定は、 iOSエンコーディングガイドに記載されているガイドラインと一致します。
オーディオ出力
{
"outputs": [
{
"public": true,
"label": "Audio-64",
"base_url": "s3://my-bucket/Audio/64k/",
"filename": "audio_64k.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"audio_codec": "aac",
"audio_bitrate": "64",
"skip_video": true
},
{
"public": true,
"label": "Audio-128",
"base_url": "s3://my-bucket/Audio/128k/",
"filename": "audio_128k.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"audio_codec": "aac",
"audio_bitrate": "128",
"skip_video": true
}
]
}ビデオ出力
{
"outputs": [
{
"public": true,
"label": "Rendition1",
"base_url": "s3://my-bucket/Rendition1",
"filename": "Rendition1.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "416x234",
"video_bitrate": "145",
"skip_audio": true
},
{
"public": true,
"label": "Rendition2",
"base_url": "s3://my-bucket/Rendition2",
"filename": "Rendition2.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "480x270",
"video_bitrate": "300",
"skip_audio": true
},
{
"public": true,
"label": "Rendition3",
"base_url": "s3://my-bucket/Rendition3",
"filename": "Rendition3.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "640x360",
"video_bitrate": "660",
"skip_audio": true
},
{
"public": true,
"label": "Rendition4",
"base_url": "s3://my-bucket/Rendition4",
"filename": "Rendition4.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "768x432",
"video_bitrate": "990",
"skip_audio": true
},
{
"public": true,
"label": "Rendition5",
"base_url": "s3://my-bucket/Rendition5",
"filename": "Rendition5.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "960x540",
"video_bitrate": "1700",
"skip_audio": true
},
{
"public": true,
"label": "Rendition6",
"base_url": "s3://my-bucket/Rendition6",
"filename": "Rendition6.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "1280x720",
"video_bitrate": "2400",
"skip_audio": true
},
{
"public": true,
"label": "Rendition7",
"base_url": "s3://my-bucket/Rendition7",
"filename": "Rendition7.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "1920x1080",
"video_bitrate": "4500",
"skip_audio": true
},
{
"public": true,
"label": "Rendition8",
"base_url": "s3://my-bucket/Rendition8",
"filename": "Rendition8.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "2560x1440",
"video_bitrate": "8100",
"skip_audio": true
},
{
"public": true,
"label": "Rendition9",
"base_url": "s3://my-bucket/Rendition9",
"filename": "Rendition9.m3u8",
"type": "segmented",
"segment_seconds": 6,
"byte_range_segmenting": true,
"format": "m4f",
"streaming_delivery_format": "hls",
"generate_keyframe_manifest": "true",
"fixed_keyframe_interval": "true",
"keyframe_rate": 0.5,
"video_codec": "hevc",
"size": "3840x2160",
"video_bitrate": "11600",
"skip_audio": true
}
]
}プレイリスト出力
{
"outputs":[
{
"public": true,
"label": "master-playlist",
"base_url": "s3://my-bucket/",
"filename": "master_playlist.m3u8",
"hls_protocol_version": 7,
"type": "playlist",
"allow_skipped_sources": true,
"alternate_audio": {
"64k_audio": {
"path": "Audio/64k/audio_64k.m3u8",
"language": "en",
"default": true,
"source": "Audio-64"
},
"128k_audio": {
"path": "Audio/128k/audio_128k.m3u8",
"language": "en",
"source": "Audio-128"
}
},
"streams": [
{
"path": "Rendition1/Rendition1.m3u8",
"source": "Rendition1",
"audio": "64k_audio"
},
{
"path": "Rendition2/Rendition2.m3u8",
"source": "Rendition2",
"audio": "64k_audio"
},
{
"path": "Rendition3/Rendition3.m3u8",
"source": "Rendition3",
"audio": "128k_audio"
},
{
"path": "Rendition4/Rendition4.m3u8",
"source": "Rendition4",
"audio": "128k_audio"
},
{
"path": "Rendition5/Rendition5.m3u8",
"source": "Rendition5",
"audio": "128k_audio"
},
{
"path": "Rendition6/Rendition6.m3u8",
"source": "Rendition6",
"audio": "128k_audio"
},
{
"path": "Rendition7/Rendition7.m3u8",
"source": "Rendition7",
"audio": "128k_audio"
},
{
"path": "Rendition8/Rendition8.m3u8",
"source": "Rendition8",
"audio": "128k_audio"
},
{
"path": "Rendition9/Rendition9.m3u8",
"source": "Rendition9",
"audio": "128k_audio"
}
]
}
]
}