IMFSinkWriter无法导出mp4的大尺寸视频 [英] IMFSinkWriter can't export a large size video of mp4

问题描述

我的Windows MFC应用程序具有导出视频文件的功能.
并且可以选择编码格式(通过 WMV 或 MP4 )和帧大小.
但是，不幸的是，当我尝试导出设置为大帧大小的 MP4 文件时，每次发生 MF_E_INVALIDMEDIATYPE .

My Windows MFC application has a function to export a video file.
And it can select encoding format (via WMV or MP4) and frame size.
But, Unfortunately when i tried to export MP4 file which is set large frame size, everytime MF_E_INVALIDMEDIATYPE happened.

简单地说，这是我在每种情况下进行测试时的结果.

Simply put, here is the result when i tested in each case.

• 640 x 480 ...确定
• 640 x 576 ...确定
• 1280 x 720 ...确定
• 1280 x 720 ...确定
• 1920 x 1080 ...确定
• 2048 x 1556 ...确定
• 4096 x 2160 ...确定

• 640 x 480 ...确定
• 640 x 576 ...确定
• 1280 x 720 ...确定
• 1280 x 720 ...确定
• 1920 x 1080 ...确定
• 2048 x 1556 ... MF_E_INVALIDMEDIATYPE
• 4096 x 2160 ... MF_E_INVALIDMEDIATYPE

这是我的代码.

HRESULT hr = S_OK;
TIFF *out;
IMFSinkWriter   *pWriter = NULL;
IMFMediaType    *pMediaTypeOut = NULL;   
IMFMediaType    *pMediaTypeIn = NULL;   
DWORD           streamIndex;     

hr = MFCreateSinkWriterFromURL(filename, NULL, NULL, &pWriter);

// Set the output media type.
if (SUCCEEDED(hr))
{
  hr = MFCreateMediaType(&pMediaTypeOut);   
}
if (SUCCEEDED(hr))
{
  hr = pMediaTypeOut->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);     
}
if (SUCCEEDED(hr))
{
  if (exportMethod == ExportFormatWAV) {
    hr = pMediaTypeOut->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_WVC1);
  }
  else if (exportMethod == ExportFormatMP4) {
    hr = pMediaTypeOut->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_H264);   
  }
}
if (SUCCEEDED(hr))
{
  hr = pMediaTypeOut->SetUINT32(MF_MT_AVG_BITRATE, 12 * 1000 * 1000); // 12M   
}
if (SUCCEEDED(hr))
{
  hr = pMediaTypeOut->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive);   
}
if (SUCCEEDED(hr))
{
  hr = MFSetAttributeSize(pMediaTypeOut, MF_MT_FRAME_SIZE, m_width, m_height);   // e.g. 4096 x 2160
}
if (SUCCEEDED(hr))
{
  hr = MFSetAttributeRatio(pMediaTypeOut, MF_MT_FRAME_RATE, m_fps * 100, 100);   
}
if (SUCCEEDED(hr))
{
  hr = MFSetAttributeRatio(pMediaTypeOut, MF_MT_PIXEL_ASPECT_RATIO, 1, 1);   
}
if (SUCCEEDED(hr))
{
  hr = pWriter->AddStream(pMediaTypeOut, &streamIndex);   
}

// Set the input media type.
if (SUCCEEDED(hr))
{
  hr = MFCreateMediaType(&pMediaTypeIn);   
}
if (SUCCEEDED(hr))
{
  hr = pMediaTypeIn->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);   
}
if (SUCCEEDED(hr))
{
  if (exportMethod == ExportFormatWAV) {
    hr = pMediaTypeIn->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_RGB24);   
  }
  else if (exportMethod == ExportFormatMP4) {
    hr = pMediaTypeIn->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_RGB32);     // Because H264 requires
  }
}
if (SUCCEEDED(hr))
{
  hr = pMediaTypeIn->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive);   
}
if (SUCCEEDED(hr))
{
  hr = MFSetAttributeSize(pMediaTypeIn, MF_MT_FRAME_SIZE, m_width, m_height);   // e.g. 4096 x 2160
}
if (SUCCEEDED(hr))
{
  hr = MFSetAttributeRatio(pMediaTypeIn, MF_MT_FRAME_RATE, m_fps * 100, 100);   
}
if (SUCCEEDED(hr))
{
  hr = MFSetAttributeRatio(pMediaTypeIn, MF_MT_PIXEL_ASPECT_RATIO, 1, 1);   
}
if (SUCCEEDED(hr))
{
  hr = pWriter->SetInputMediaType(streamIndex, pMediaTypeIn, NULL);   // This line returns MF_E_INVALIDMEDIATYPE
}

// Tell the sink writer to start accepting data.
if (SUCCEEDED(hr))
{
  hr = pWriter->BeginWriting();
}

我也要导出 MP4 的大尺寸视频.
有人知道解决此问题的方法吗?

I want to export a large sized video of MP4 as well.
Does anyone know a solution against this problem?

参考文献
https://msdn.microsoft. com/zh-CN/library/windows/desktop/ff819477(v = vs.85).aspx
https://msdn.microsoft. com/en-us/library/windows/desktop/ff819476(v = vs.85).aspx

References
https://msdn.microsoft.com/en-us/library/windows/desktop/ff819477(v=vs.85).aspx
https://msdn.microsoft.com/en-us/library/windows/desktop/ff819476(v=vs.85).aspx

同一问题已经发布了msdn.
https://social.msdn.microsoft.com/Forums/zh-CN/ac5b71e4-e94a-4d18-bc92-8b44fa5280b6/the-max-resolution-for-mp4h264-encoder

Same question has already posted msdn.
https://social.msdn.microsoft.com/Forums/en-US/ac5b71e4-e94a-4d18-bc92-8b44fa5280b6/the-max-resolution-for-mp4h264-encoder

推荐答案

Media Foundation的

Media Foundation's MPEG-4 File Sink has no resolution restrictions. It multiplexes already encoded data and is not sensitive to video resolution.

如果/当您在编码H.264上下文时，编码器通常确实具有局限性.例如，英特尔®HD Graphics 4600的英特尔®快速同步视频H.264编码器MFT可以产生4096 x 4096 H.264内容，而MP4接收器将其正确写入文件中.

If/when you, however, are encoding H.264 context, the encoders typically do have the limitations. For example, Intel(R) HD Graphics 4600's Intel® Quick Sync Video H.264 Encoder MFT can produce 4096 x 4096 H.264 content, and MP4 sink writes it correctly to file.

在您的情况下，您可能会达到编码器中的分辨率极限，并且由于编码器拒绝带有通用错误代码的不支持的分辨率，因此您没有比MF_E_INVALIDMEDIATYPE有用的东西了.使用备用编码器可能会更好.

In your case you are likely to hit resolution limit in encoder, and since encoder rejects unsupported resolution with generic error code, you don't have anything more helpful than MF_E_INVALIDMEDIATYPE. You might have better luck with an alternate encoder.

这篇关于IMFSinkWriter无法导出mp4的大尺寸视频的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！