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| raffriff42 |
| Posted: Sep 25 2013, 09:23 PM |
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Advanced Member
Group: Members
Posts: 384
Member No.: 35081
Joined: 25-June 12
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| QUOTE (Virtualnoob123 @ Sep 25 2013, 09:23 PM) | Ok, this seems to work just fine now:
| CODE |
#avisynth
## speed change test:
## half speed from frame 0 to frame 29;
## 130% speed from frame 30 to frame 149
## normal speed to end of video
V=AviSource ("D:\Movie Folder\Kharg Island\Scout vs stinger noob 45fps.avi")
return UUChangeSpeed(Trim(V, 0, 500), 1)
\ + UUChangeSpeed(Trim(V, 501, 1000), 4)
\ + Trim(V, 1000, 0)
function UUChangeSpeed(clip c, float factor)
{
oldRate = FrameRate(c)
newVid = AssumeFPS(c, oldRate * factor)
return AudioDub(ChangeFPS(newVid, c), c.TimeStretch(tempo=100*factor))
}
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But for some reason instead of being 4 speed from 501-1000 frames it goes back to normal at around 600-650 frames. And stays normal speed to the end of the video. |
That's because frames were removed to speed up the video.  |
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| Virtualnoob123 |
| Posted: Sep 25 2013, 09:26 PM |
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Member
Group: Members
Posts: 11
Member No.: 37179
Joined: 25-September 13
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I added that piece of code to mine like this:
| CODE |
#avisynth
## speed change test:
## half speed from frame 0 to frame 29;
## 130% speed from frame 30 to frame 149
## normal speed to end of video
V=AviSource ("D:\Movie Folder\Kharg Island\Scout vs stinger noob 45fps.avi")
return Trim(V, 0, 500)
\ + UUChangeSpeed(Trim(V, 501, 1000), 4)
\ + Trim(V, 1001, 0)
function UUChangeSpeed(clip c, float factor)
{
oldRate = FrameRate(c)
newVid = AssumeFPS(c, oldRate * factor)
return AudioDub(ChangeFPS(newVid, c), c.TimeStretch(tempo=100*factor))
}
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And got the same resaults. Goes back to normal speed at around 600-650! |
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| raffriff42 |
| Posted: Sep 25 2013, 09:33 PM |
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Advanced Member
Group: Members
Posts: 384
Member No.: 35081
Joined: 25-June 12
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OK this change to the code will show what's happening with the source frames.
As mentioned in the comment, when done debugging, add a "#" in front of the "ShowFrameNumber" line to disable it | CODE | #avisynth
V=AviSource ("D:\Movie Folder\Kharg Island\Scout vs stinger noob 45fps.avi")
## debugging: show the original frame number from the source video
## (when done debugging, add a "#" in front of this line to disable it)
V=V.ShowFrameNumber()
return UUChangeSpeed(Trim(V, 0, 500), 1)
\ + UUChangeSpeed(Trim(V, 501, 1000), 4)
\ + Trim(V, 1000, 0)
function UUChangeSpeed(clip c, float factor)
{
oldRate = FrameRate(c)
newVid = AssumeFPS(c, oldRate * factor)
return AudioDub(ChangeFPS(newVid, c), c.TimeStretch(tempo=100*factor))
} |
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| Virtualnoob123 |
| Posted: Sep 25 2013, 09:34 PM |
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Member
Group: Members
Posts: 11
Member No.: 37179
Joined: 25-September 13
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| QUOTE (raffriff42 @ Sep 25 2013, 09:23 PM) | | QUOTE (Virtualnoob123 @ Sep 25 2013, 09:23 PM) | Ok, this seems to work just fine now:
| CODE |
#avisynth
## speed change test:
## half speed from frame 0 to frame 29;
## 130% speed from frame 30 to frame 149
## normal speed to end of video
V=AviSource ("D:\Movie Folder\Kharg Island\Scout vs stinger noob 45fps.avi")
return UUChangeSpeed(Trim(V, 0, 500), 1)
\ + UUChangeSpeed(Trim(V, 501, 1000), 4)
\ + Trim(V, 1000, 0)
function UUChangeSpeed(clip c, float factor)
{
oldRate = FrameRate(c)
newVid = AssumeFPS(c, oldRate * factor)
return AudioDub(ChangeFPS(newVid, c), c.TimeStretch(tempo=100*factor))
}
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But for some reason instead of being 4 speed from 501-1000 frames it goes back to normal at around 600-650 frames. And stays normal speed to the end of the video. |
That's because frames were removed to speed up the video. |
Well, how do I get the video to speed up from frame 501-1001 and not drop off 400 frames too early?!  |
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| raffriff42 |
| Posted: Sep 25 2013, 09:49 PM |
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Advanced Member
Group: Members
Posts: 384
Member No.: 35081
Joined: 25-June 12
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Just watch the video, it works I promise you. I guess I fail at explaining.
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| Virtualnoob123 |
| Posted: Sep 25 2013, 09:59 PM |
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Member
Group: Members
Posts: 11
Member No.: 37179
Joined: 25-September 13
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| QUOTE (raffriff42 @ Sep 25 2013, 09:49 PM) | | Just watch the video, it works I promise you. I guess I fail at explaining. |
Yes, you have solved my problem and thanks.
It's just I want to stop the speeded up section on frame 1000, but it drops off at 650. Guess I just add 450 frames to the code.
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| meowmeow |
| Posted: Sep 27 2013, 03:17 PM |
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Advanced Member
Group: Members
Posts: 98
Member No.: 37160
Joined: 21-September 13
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Thanks! Nice, nice code works with both video & audio only. And those frames which lost - they're lost while maintaining same FPS at shorter time. |
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| malky |
| Posted: Sep 28 2013, 10:13 AM |
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Advanced Member
Group: Members
Posts: 290
Member No.: 22386
Joined: 6-November 07
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Great code.Much easier solution than mine.
http://forums.virtualdub.org/index.php?act...4&hl=virtualdub |
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| raffriff42 |
| Posted: Sep 28 2013, 10:43 PM |
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Advanced Member
Group: Members
Posts: 384
Member No.: 35081
Joined: 25-June 12
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Thanks. I should really credit this post (I think it was this one) for the idea.
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