private bool AnalysVideo()
{
if (!File.Exists(textFlv.Text))
{
MessageBox.Show("flv file does not exist!", "no such file.", MessageBoxButtons.OK, MessageBoxIcon.Information);
return false;
}
EnableUI(false);
new Thread(() =>
{
FileStream stream = null;
stream = new FileStream(textFlv.Text, FileMode.Open, FileAccess.Read);
this.Invoke(new MethodInvoker(() =>
{
progressBar.Maximum = (int)stream.Length;
progressBar.Value = 0;
Application.DoEvents();
}));
parser = new FlvParser(stream, (tag) =>
{
this.BeginInvoke(new MethodInvoker(() =>
{
progressBar.Value = (int)tag.Offset;
ChangeTaskBar();
if (progressBar.Value == progressBar.Maximum)
{
progressBar.Value = 0;
}
}));
return true;
});
stream.Close();
stream.Dispose();
this.BeginInvoke(new MethodInvoker(() =>
{
textStat.Text = "File:" + textFlv.Text + "\r\n"
+ "Length:" + (parser.Length / 1024.0 / 1024.0).ToString("0.0") + " Mb" + "\r\n"
+ "Duration:" + parser.Duration / 1000 + " s" + "\r\n"
+ "Rate:" + parser.Rate + "Kbps";
EnableUI(true);
}));
}).Start();
return true;
}
public FlvWrite(FlvParser parser)
{
this.parser = parser;
}
private void buttonBlack_Click(object sender, EventArgs e)
{
EnableUI(false);
progressBar.Minimum = 0;
progressBar.Value = 0;
progressBar.Maximum = listViewFlv.Items.Count * 2;
int numbers = listViewFlv.Items.Count;
string[] files = new string[numbers];
for (int i = 0; i < numbers; i++)
{
files[i] = listViewFlv.Items[i].Text;
}
// string s = listViewFlv.Items.
new Thread(() =>
{
for (int i = 0; i < numbers; i++)
{
double rate = (double)upDownRate.Value;
//string file = null;
//file = listViewFlv.Items[i].Text;
this.BeginInvoke(new MethodInvoker(() =>
{
this.Text = title + "--正在处理第" + (i + 1) + "个视频...";
}));
FileStream stream = null;
stream = new FileStream(files[i], FileMode.Open, FileAccess.Read);
FlvParser parser = new FlvParser(stream, null);
this.BeginInvoke(new MethodInvoker(() =>
{
progressBar.Value++;
ChangeTaskBar();
}));
stream.Close();
stream.Dispose();
if (parser.Rate > rate)
{
long filesize = parser.Length + 16;
double duration;
duration = filesize / 125.0 / rate; // * 8 / 1000 / rate
string offset = ((duration * 1000 - parser.Duration) / 1000).ToString("0.000");
Stream src = new FileStream(files[i], FileMode.Open);
string path = files[i].Substring(0, files[i].LastIndexOf(".")) + ".black.flv";
Stream dest = new FileStream(path, FileMode.Create);
FlvWrite fw = new FlvWrite(parser);
fw.WriteHead(dest, filesize, duration, -1, -1, -1, 1.0, 0,
0, parser.Tags.Count - 1, false);
for (int n = 1; n < parser.Tags.Count; n++)
{
src.Seek(parser.Tags[n].Offset - 11, SeekOrigin.Begin);
FlvParser.FlvTag tag = parser.Tags[n];
byte[] bs = new byte[tag.DataSize + 11];
// 数据
src.Read(bs, 0, bs.Length);
dest.Write(bs, 0, bs.Length);
// prev tag size
src.Read(bs, 0, 4);
dest.Write(bs, 0, 4);
}
src.Close();
src.Dispose();
byte[] buffer = new byte[]{
0x09, 0, 0, 0x01, // 视频帧 1 字节
0, 0, 0, 0, // 04h, timestamp & ex
0, 0, 0, // stream id
0x17, // InnerFrame, H.264
0, 0, 0, 0x0c // 此帧长度 12 字节
};
uint dur = (uint)(duration * 1000);
fw.PutTime(buffer, 0x04, dur);
dest.Write(buffer, 0, buffer.Length);
dest.Flush();
dest.Close();
dest.Dispose();
}
this.BeginInvoke(new MethodInvoker(() =>
{
progressBar.Value++;
ChangeTaskBar();
if (progressBar.Value == progressBar.Maximum)
{
progressBar.Value = 0;
this.Text =title+ "--处理完成！";
EnableUI(true);
}
}));
}
}).Start();
}