amazon-s3 - MediaConvert 将视频拆分为多个块，但持续时间长度不同

Question

我有一个 1 小时的视频。

我想按指定范围在不同部分分块。

前任：

1. 0 到 10 分钟
2. 10 到 40 分钟
3. 40 到 60 分钟

我知道 ffmpeg 可以做到这一点，但我想用MediaConvert做到这一点。

这是 ffmpeg 的示例，但我想使用MediaConvert做同样的事情

ffmpeg -i input.mp4 -c copy -f segment -segment_times 0,600,2400 output%d.mp4

Answer 1

您可以通过使用 MediaConvert 中的输入剪辑来完成此操作。您需要创建多个作业才能获得所需的输入剪辑范围和输出。

在您的作业设置中，输入块将如下所示。

工作 1

"Inputs": [
      {
        "AudioSelectors": {
          "Audio Selector 1": {
            "Offset": 0,
            "DefaultSelection": "DEFAULT",
            "ProgramSelection": 1
          }
        },
        "VideoSelector": {
          "ColorSpace": "FOLLOW",
          "Rotate": "DEGREE_0",
          "AlphaBehavior": "DISCARD"
        },
        "FilterEnable": "AUTO",
        "PsiControl": "USE_PSI",
        "FilterStrength": 0,
        "DeblockFilter": "DISABLED",
        "DenoiseFilter": "DISABLED",
        "InputScanType": "AUTO",
        "TimecodeSource": "ZEROBASED",
        "FileInput": "s3://bucket/media.mp4",
        "InputClippings": [
          {
            "StartTimecode": "00:00:00:00",
            "EndTimecode": "00:10:00:00"
          }
        ]
      }
    ]

工作 2

    "Inputs": [
      {
        "AudioSelectors": {
          "Audio Selector 1": {
            "Offset": 0,
            "DefaultSelection": "DEFAULT",
            "ProgramSelection": 1
          }
        },
        "VideoSelector": {
          "ColorSpace": "FOLLOW",
          "Rotate": "DEGREE_0",
          "AlphaBehavior": "DISCARD"
        },
        "FilterEnable": "AUTO",
        "PsiControl": "USE_PSI",
        "FilterStrength": 0,
        "DeblockFilter": "DISABLED",
        "DenoiseFilter": "DISABLED",
        "InputScanType": "AUTO",
        "TimecodeSource": "ZEROBASED",
        "FileInput": "s3://bucket/media.mp4",
        "InputClippings": [
          {
            "StartTimecode": "00:10:00:00",
            "EndTimecode": "00:40:00:00"
          }
        ]
      }
    ]

工作 3

    "Inputs": [
      {
        "AudioSelectors": {
          "Audio Selector 1": {
            "Offset": 0,
            "DefaultSelection": "DEFAULT",
            "ProgramSelection": 1
          }
        },
        "VideoSelector": {
          "ColorSpace": "FOLLOW",
          "Rotate": "DEGREE_0",
          "AlphaBehavior": "DISCARD"
        },
        "FilterEnable": "AUTO",
        "PsiControl": "USE_PSI",
        "FilterStrength": 0,
        "DeblockFilter": "DISABLED",
        "DenoiseFilter": "DISABLED",
        "InputScanType": "AUTO",
        "TimecodeSource": "ZEROBASED",
        "FileInput": "s3://bucket/media.mp4",
        "InputClippings": [
          {
            "StartTimecode": "00:40:00:00",
            "EndTimecode": "01:00:00:00"
          }
        ]
      }
    ]

这里需要注意的是剪辑区域基于输入源上的时间码。在我的示例中，我将时间码源设置为从零开始，这意味着服务将从 0 开始时间码并开始计时。您可以选择指定开始时间码或在文件中使用嵌入时间码。

请注意，时间码需要采用 SMPTE 语法 (HOURS:MINUTES:SECONDS:FRAMES) [2]

== 文档 ==

[1] https://docs.aws.amazon.com/mediaconvert/latest/ug/assemble-multiple-inputs-and-input-clips.html

[2] https://en.wikipedia.org/wiki/SMPTE_timecode