我试图通过asp.net处理程序使用HTML5播放视频。它在windows& mac chrome但不适用于iPad / iPhone和iPad mac safari。我尝试了大多数解决方案,比如请求块和更多,但没有用。我的代码如下。
<video controls="true">
<source id="mp4" src="~/ImageHandler/Handler1.ashx?location=785f.mp4" type="video/mp4"/>
</video>
&#13;
处理程序:
public void ProcessRequest(HttpContext context)
{
ImageFileDao = NhibernateRepository.ImageFileDao;
ImageStorageService = NhibernateRepository.ImageStorageService;
string filename = context.Request["location"];
string location = filename.Contains("\\") ? filename.Split('\\')[2] : filename;
string firstDir = location.Substring(0, 2);
string secondDir = location.Substring(2, 2);
string fullpath = Path.Combine(Path.Combine(ImageStorageService.ImageStorageDir, firstDir), secondDir) + "\\" + location;
string mimetype = "video/mp4";
if (System.IO.File.Exists(fullpath))
{
context.Response.ContentType = mimetype;
if (!String.IsNullOrEmpty(context.Request.ServerVariables["HTTP_RANGE"]))
{
RangeDownload(fullpath, context);
}
else
{
long fileLength = File.OpenRead(fullpath).Length;
context.Response.AddHeader("Content-Length", fileLength.ToString());
context.Response.WriteFile(fullpath);
}
}
else
{
throw new HttpException(404, "Video Not Found Path:" + fullpath);
}
}
private void RangeDownload(string fullpath, HttpContext context)
{
long size, start, end, length, fp = 0;
using (StreamReader reader = new StreamReader(fullpath))
{
size = reader.BaseStream.Length;
start = 0;
end = size - 1;
length = size;
context.Response.AddHeader("Accept-Ranges", "0-" + size);
if (!String.IsNullOrEmpty(context.Request.ServerVariables["HTTP_RANGE"]))
{
long anotherStart = start;
long anotherEnd = end;
string[] arr_split = context.Request.ServerVariables["HTTP_RANGE"].Split(new char[] { Convert.ToChar("=") });
string range = arr_split[1];
if (range.IndexOf(",") > -1)
{
context.Response.AddHeader("Content-Range", "bytes " + start + "-" + end + "/" + size);
throw new HttpException(416, "Requested Range Not Satisfiable");
}
if (range.StartsWith("-"))
{
anotherStart = size - Convert.ToInt64(range.Substring(1));
}
else
{
arr_split = range.Split(new char[] { Convert.ToChar("-") });
anotherStart = Convert.ToInt64(arr_split[0]);
long temp = 0;
anotherEnd = (arr_split.Length > 1 && Int64.TryParse(arr_split[1].ToString(), out temp)) ? Convert.ToInt64(arr_split[1]) : size;
}
if (anotherStart > anotherEnd || anotherStart > size - 1 || anotherEnd >= size)
{
context.Response.AddHeader("Content-Range", "bytes " + start + "-" + end + "/" + size);
throw new HttpException(416, "Requested Range Not Satisfiable");
}
start = anotherStart;
end = anotherEnd;
length = end - start + 1;
fp = reader.BaseStream.Seek(start, SeekOrigin.Begin);
context.Response.StatusCode = 206;
}
}
context.Response.AddHeader("Content-Range", "bytes " + start + "-" + end + "/" + size);
context.Response.AddHeader("Content-Length", length.ToString());
context.Response.WriteFile(fullpath, fp, length);
context.Response.End();
}
注意:我正在获取&context 39.Request.ServerVariables [&#34; HTTP_RANGE&#34;]&#39;永远无法使用“设备”,也许这也是其中一个原因。
请提供宝贵的解决方案。公平的建议也很愉快地接受。提前致谢