transcoder.json

{
    "outputTracks": {
        "video": [
            {
                "trackId": "vsrc"
            },
            {
                "trackId": "v480p",
                "passthrough": false,
                "bitrate": 600000,
                "codec": "h264",
                "videoParams": {
                    "preset": "a",
                    "profile": "baseline",
                    "height": 480
                }
            },
            {
                "trackId": "v540p",
                "passthrough": false,
                "bitrate": 900000,
                "codec": "h264",
                "videoParams": {
                    "preset": "a",
                    "profile": "main",
                    "height": 540
                }
            }
        ],
        "audio": [
            {
                "trackId": "asrc"
            },
            {
                "trackId": "a64k",
                "passthrough": false,
                "bitrate": 64000,
                "codec": "aac",
                "audioParams": {
                    "samplingrate": 44100,
                    "channels": 2
                }
            }
        ]
    },
    "variants": {
        "src": {
            "video": "vsrc",
            "audio": "asrc"
        },
        "540p": {
            "video": "v540p",
            "audio": "a64k"
        },
        "480p": {
            "video": "v480p",
            "audio": "a64k"
        }
    },
    "engine": {
        "encoders": {
            "h264": [
                "h264_nvenc",
                "libx264",
                "h264_videotoolbox"
            ]
        },
        "presets": {
            "a": {
                "h264_videotoolbox": "default",
                "libx264": "veryfast",
                "h264_nvenc": "fast"
            }
        }
    }
}