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Fred Flinstone
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 Posted: Wed May 18, 2005 9:59 pm Post subject: Playing Video Backwards? Change Video Speed? |
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Can someone show my how to play a video (Mpeg1) backwards and change the
playback speed? I'm writing a video viewer app and I need to let the user
play in reverse as well as ford and change the speed as well.
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Datastead
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| Posted: Thu May 19, 2005 7:55 am Post subject: Re: Playing Video Backwards? Change Video Speed? |
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Hi,
This is one of the features of TVideoGrabber.
You can find it here: http://www.datastead.com/vidgrab/index.htm
Feel free to contact us directly if you need more information.
Best regards,
Michel Fornengo,
Datastead Sarl.
"Fred Flinstone" <a@b.com> a écrit dans le message de news:
428bbae3$1 (AT) newsgroups (DOT) borland.com...
| Quote: | Can someone show my how to play a video (Mpeg1) backwards and change the
playback speed? I'm writing a video viewer app and I need to let the user
play in reverse as well as ford and change the speed as well.
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Nils Haeck
Guest
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| Posted: Thu May 19, 2005 9:26 pm Post subject: Re: Playing Video Backwards? Change Video Speed? |
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You can basically do it with DirectX, but you will have to manually fumble a
lot with filter graphs. In essence it is possible to request "any" frame
from the source. However, since mpeg is encoded in progressive forward way
(so starting with full I frame, then quite a lot of delta P frames and even
delta-delta B frames, it would require a lot of decoding just to get to one
frame back. So don't expect high speed backwards playback.
Kind regards,
Nils
"Fred Flinstone" <a@b.com> schreef in bericht
news:428bbae3$1 (AT) newsgroups (DOT) borland.com...
| Quote: | Can someone show my how to play a video (Mpeg1) backwards and change the
playback speed? I'm writing a video viewer app and I need to let the user
play in reverse as well as ford and change the speed as well.
|
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KimB
Guest
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| Posted: Fri May 20, 2005 12:04 pm Post subject: Re: Playing Video Backwards? Change Video Speed? |
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Seems like the last post here:
http://www.progdigy.com/modules.php?name=Forums&file=viewtopic&t=2432&highlight=reverse
...is the nearest solution using Directshow.
hth
kim
Nils Haeck wrote:
| Quote: | You can basically do it with DirectX, but you will have to manually fumble a
lot with filter graphs. In essence it is possible to request "any" frame
from the source. However, since mpeg is encoded in progressive forward way
(so starting with full I frame, then quite a lot of delta P frames and even
delta-delta B frames, it would require a lot of decoding just to get to one
frame back. So don't expect high speed backwards playback.
Kind regards,
Nils
"Fred Flinstone" <a@b.com> schreef in bericht
news:428bbae3$1 (AT) newsgroups (DOT) borland.com...
Can someone show my how to play a video (Mpeg1) backwards and change the
playback speed? I'm writing a video viewer app and I need to let the user
play in reverse as well as ford and change the speed as well.
|
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