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UID title description helpviewer_keywords old-location tech.root ms.assetid ms.date ms.keywords req.header req.include-header req.target-type req.target-min-winverclnt req.target-min-winversvr req.kmdf-ver req.umdf-ver req.ddi-compliance req.unicode-ansi req.idl req.max-support req.namespace req.assembly req.type-library req.lib req.dll req.irql targetos req.typenames req.redist ms.custom f1_keywords dev_langs topic_type api_type api_location api_name
NF:strmif.IDvdControl2.PlayForwards
IDvdControl2::PlayForwards (strmif.h)
The PlayForwards method plays forward at the specified speed from the current location.
IDvdControl2 interface [DirectShow]
PlayForwards method
IDvdControl2.PlayForwards
IDvdControl2::PlayForwards
IDvdControl2PlayForwards
PlayForwards
PlayForwards method [DirectShow]
PlayForwards method [DirectShow]
IDvdControl2 interface
dshow.idvdcontrol2_playforwards
strmif/IDvdControl2::PlayForwards
dshow\idvdcontrol2_playforwards.htm
dshow
bf57e2fd-c85f-430d-a1fa-5b59f7bfb8af
4/26/2023
IDvdControl2 interface [DirectShow],PlayForwards method, IDvdControl2.PlayForwards, IDvdControl2::PlayForwards, IDvdControl2PlayForwards, PlayForwards, PlayForwards method [DirectShow], PlayForwards method [DirectShow],IDvdControl2 interface, dshow.idvdcontrol2_playforwards, strmif/IDvdControl2::PlayForwards
strmif.h
Dshow.h
Windows
Windows XP [desktop apps only]
Windows Server 2003 [desktop apps only]
Strmiids.lib
Windows
19H1
IDvdControl2::PlayForwards
strmif/IDvdControl2::PlayForwards
c++
APIRef
kbSyntax
COM
Strmiids.lib
Strmiids.dll
IDvdControl2.PlayForwards

IDvdControl2::PlayForwards

-description

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The PlayForwards method plays forward at the specified speed from the current location.

-parameters

-param dSpeed [in]

Value that specifies the playback speed. This value is a multiplier, where 1.0 is the authored speed, so a value of 2.5 plays at two and one-half times the authored speed, while a value of 0.5 plays at half the authored speed. The actual speed of playback depends on the capabilities of the video decoder. Values below 0.00001 are converted to 0.00001.

-param dwFlags [in]

Bitwise OR of one or more flags from the DVD_CMD_FLAGS enumeration, specifying how to synchronize the command.

-param ppCmd [out]

Receives a pointer to an IDvdCmd object that can be used to synchronize DVD commands. The caller must release the interface. This parameter can be NULL. For more information, see Synchronizing DVD Commands.

-returns

Returns one of the following values.

Return code Description
S_OK
 Success.
VFW_E_DVD_OPERATION_INHIBITED
 UOP control prohibits the operation.

-remarks

This method is demonstrated in the DVDSample application in CDvdCore::FastForward.

The following table shows the Annex J command name to which this method name corresponds, and the domains in which this method is valid.

Annex J Command Name Valid Domains
Forward_Scan
  • DVD_DOMAIN_VideoManagerMenu
  • DVD_DOMAIN_VideoTitleSetMenu
  • DVD_DOMAIN_Title

-see-also

DVD Applications

Error and Success Codes

IDvdControl2 Interface