public async Task ConversionStreamTest()
{
var path = Res.GetPath(Res.Video_Mp4);
var opath = "out-test-v-2.mp4";
try
{
using var reader = new VideoReader(path);
await reader.LoadMetadataAsync();
var encoder = new H264Encoder
{
Format = "flv"
};
using (var filestream = File.Create(opath))
{
using (var writer = new VideoWriter(filestream,
reader.Metadata.Width,
reader.Metadata.Height,
reader.Metadata.AvgFramerate,
encoder.Create()))
{
writer.OpenWrite();
reader.Load();
await reader.CopyToAsync(writer);
}
}
using var video = new VideoReader(opath);
await video.LoadMetadataAsync();
Assert.True(video.Metadata.Codec == "h264");
Assert.True(video.Metadata.AvgFramerate == reader.Metadata.AvgFramerate);
Assert.True(Math.Abs(video.Metadata.Duration - reader.Metadata.Duration) < 0.2);
Assert.True(video.Metadata.Width == reader.Metadata.Width);
Assert.True(video.Metadata.Height == reader.Metadata.Height);
Assert.True(video.Metadata.BitDepth == reader.Metadata.BitDepth);
Assert.True(video.Metadata.Streams.Length == 1); // only video
}
finally
{
if (File.Exists(opath))
{
File.Delete(opath);
}
}
}
public async Task ConversionTest2()
{
var path = Res.GetPath(Res.Video_Mp4);
var opath = "out-test-v-2.webm";
try
{
var encoder = new VP9Encoder();
encoder.RowBasedMultithreading = true;
encoder.SetCQP(31);
using var reader = new VideoReader(path);
reader.LoadMetadata();
reader.Load();
using (var writer = new VideoWriter(opath,
reader.Metadata.Width,
reader.Metadata.Height,
reader.Metadata.AvgFramerate,
encoder.Create()))
{
writer.OpenWrite(true);
reader.CopyTo(writer);
}
using var video = new VideoReader(opath);
await video.LoadMetadataAsync();
Assert.True(video.Metadata.Codec == "vp9");
Assert.True(video.Metadata.AvgFramerate == reader.Metadata.AvgFramerate);
Assert.True(Math.Abs(video.Metadata.Duration - reader.Metadata.Duration) < 0.01);
Assert.True(video.Metadata.Width == reader.Metadata.Width);
Assert.True(video.Metadata.Height == reader.Metadata.Height);
Assert.True(video.Metadata.Streams.Length == 1); // only video
}
finally
{
if (File.Exists(opath))
{
File.Delete(opath);
}
}
}
static void ReadWriteVideo(string input, string output)
{
var video = new VideoReader(input);
video.LoadMetadataAsync().Wait();
video.Load();
using (var writer = new VideoWriter(File.Create(output),
video.Metadata.Width, video.Metadata.Height, video.Metadata.AvgFramerate,
new H264Encoder()
{
Format = "flv"
}.Create()))
{
writer.OpenWrite(true);
//video.CopyTo(writer);
var frame = new VideoFrame(video.Metadata.Width, video.Metadata.Height);
while (true)
{
// read next frame
var f = video.NextFrame(frame);
if (f == null)
{
break;
}
for (int i = 0; i < 100; i++)
{
for (int j = 0; j < 100; j++)
{
var px = frame.GetPixels(i, j).Span;
px[0] = 255;
px[1] = 0;
px[2] = 0;
}
}
writer.WriteFrame(frame);
}
}
}
static void ConvertVideo(string input, string output)
{
var encoder = new VP9Encoder();
encoder.RowBasedMultithreading = true;
encoder.SetCQP(31);
using (var reader = new VideoReader(input))
{
reader.LoadMetadata();
reader.Load();
using (var writer = new VideoWriter(output,
reader.Metadata.Width,
reader.Metadata.Height,
reader.Metadata.AvgFramerate,
encoder.Create()))
{
writer.OpenWrite(true);
reader.CopyTo(writer);
}
}
}
