Buffering Stream Filter (Compact 7)
3/12/2014
The Buffering Stream Filter accepts unbuffered streaming data from a source filter, such as the HTTP Source Filter.
The following table shows the filter properties.
| Filter property | Description |
|---|---|
Filter Interfaces |
|
Input Pin Media Types |
MEDIATYPE_Stream_Unbuffered |
Input Pin Media Subtypes |
A FourCC GUID matching the file extension. For more information, see FourCC Codes. |
Input Pin Interfaces |
|
Output Pin Media Types |
MEDIATYPE_Stream_Buffered |
Output Pin Media Subtypes |
A FourCC GUID matching the file extension. For more information, see FourCC Codes. |
Output Pin Interfaces |
|
Filter CLSID |
CLSID_BufferingStreamFilter |
Executable |
Quartz.dll |
SYSGEN Variable |
SYSGEN_DSHOW |
MERIT_PREFERRED |
Remarks
The demultiplexer must control the buffering depth to ensure that enough data is buffered for smooth playback. The default amount of data buffered is 1 MB. The buffer can be set to any amount by using the IBuffering Interface of the filter. The amount of data that can be held by a buffer using the 1 MB default size is shown in the table below.
| Data bit rate | Storage Capacity |
|---|---|
320 kbps |
25 seconds |
256 kbps |
40 seconds |
192 kbps |
42 seconds |
128 kbps |
64 seconds |