【发布时间】：2021-03-30 03:50:01
【问题描述】：
我正在研究一种将叠加图像添加到视频的编码流程。我希望这个水印在右下角。无论我尝试使用位置参数，水印都位于左上角。
谁能给我指出一个涵盖该场景的示例？ Microsoft 文档和示例在定位叠加层和设置不透明度方面含糊不清。
这是一段包含我的转换定义的代码。无论覆盖设置如何，我都可以为矩形位置元素使用任何值，并且没有任何变化。水印最终出现在视频的右上角。它就像位置和不透明度属性被忽略了。
new AMSModels.TransformOutput(
new AMSModels.StandardEncoderPreset(
filters: new AMSModels.Filters
{
Overlays = new List<AMSModels.Overlay>
{
new AMSModels.VideoOverlay()
{
InputLabel = "tbvvideooverlay",
Opacity = .5,
Position = new AMSModels.Rectangle(){ Left = "100", Top = "100", Width = "100", Height = "100"} //**I've tried all types of values here including percentages, nothing changes when I reencode the video.**
}
}
},
codecs: new AMSModels.Codec[]
{
// Add an AAC Audio layer for the audio encoding
new AMSModels.AacAudio(
channels: 2,
samplingRate: 48000,
bitrate: 128000,
profile: AMSModels.AacAudioProfile.AacLc
),
// Next, add a H264Video for the video encoding
new AMSModels.H264Video (
// Set the GOP interval to 2 seconds for all H264Layers
keyFrameInterval:TimeSpan.FromSeconds(2),
// Add H264Layers. Assign a label that you can use for the output filename
layers: new AMSModels.H264Layer[]
{
new AMSModels.H264Layer (
bitrate: 3600000, // Units are in bits per second and not kbps or Mbps - 3.6 Mbps or 3,600 kbps
width: "1280",
height: "720",
label: "3600" // This label is used to modify the file name in the output formats
),
new AMSModels.H264Layer (
bitrate: 1600000, // Units are in bits per second and not kbps or Mbps - 1.6 Mbps or 1600 kbps
width: "960",
height: "540",
label: "1600" // This label is used to modify the file name in the output formats
),
new AMSModels.H264Layer (
bitrate: 600000, // Units are in bits per second and not kbps or Mbps - 0.6 Mbps or 600 kbps
width: "640",
height: "360",
label: "600" // This label is used to modify the file name in the output formats
),
}
),
// Also generate a set of PNG thumbnails
new AMSModels.PngImage(
start: "10%",
step: "10%",
range: "90%",
layers: new Microsoft.Azure.Management.Media.Models.PngLayer[]{
new AMSModels.PngLayer(
width: "100%",
height: "100%"
)
}
),
new AMSModels.JpgImage(
start: "10%",
step: "10%",
range: "90%",
layers: new Microsoft.Azure.Management.Media.Models.JpgLayer[]{
new AMSModels.JpgLayer(
quality: 100,
width: "100%",
height: "100%"
)
}
)
},
// Specify the format for the output files - one for video+audio, and another for the thumbnails
formats: new AMSModels.Format[]
{
// Mux the H.264 video and AAC audio into MP4 files, using basename, label, bitrate and extension macros
// Note that since you have multiple H264Layers defined above, you have to use a macro that produces unique names per H264Layer
// Either {Label} or {Bitrate} should suffice
new AMSModels.Mp4Format(
filenamePattern:"{Basename}_{Resolution}_{Bitrate}{Extension}"
),
new AMSModels.PngFormat(
filenamePattern:"Thumbnail-{Basename}-{Index}{Extension}"
),
new AMSModels.JpgFormat(
filenamePattern:"Thumbnail-{Basename}-{Index}{Extension}"
)
}
),
onError: AMSModels.OnErrorType.StopProcessingJob,
relativePriority: AMSModels.Priority.Normal
)
};
string description = "A simple custom encoding transform with 2 MP4 bitrates";
// Create the custom Transform with the outputs defined above
transform = await client.Transforms.CreateOrUpdateAsync(resourceGroupName, accountName, transformName, outputs, description);
}
谢谢！
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