Hey all, first off let me thank anyone how is willing to help me in advance, cause im slowly learning my way around issues I have and only reach out for help on the forum when im unable to find an answer through my usual means.
My problem is, I was getting ready to uncompress some video from its Divx codec into Huffyuv using VdubMod when I noticed that my video became extremely slow (like the fps were cut in half) once I converted it when I noticed that the original videos frame rate is set at 119fps. My video editing software also doesn't seem to be able to import the video correctly. Do I need to change its frame rate before i can change the codec and use it in my editing software? I'm using sony vegas (just picked it up not too long ago, this will be my first time using it, but I have read some tutorials.)
Uncompression Issue/ High Frame Rate
-
Illwilledmarine
- Joined: Sun Mar 25, 2007 12:06 pm
- Location: Phoenix, AZ
-
Melichan923
- Joined: Tue May 30, 2006 8:21 am
- Location: New Hampshire
- Contact:
Hey, Illwilledmarine! I will try to help you out as best as I can with this. 
119fps is definitely the problem. This means that part of your video was playing at 23.976 and some at 29.97. A lot of unneeded frames were added to the variable frame rate to make it play back at the correct speed. You want to get rid of these frames and make the video play at a constant frame rate. A program called "tcConv" can help you with this.
If you have the AMVapp installed, you can go to Start>Programs>AMVapp>Support Tools>"tcConv." If not, go here and install the last package at the bottom of the first post.
Once opened, underneath the first tab import the original AVI file (before the extra frames were hard-coded to the video) and enter in the output name and a name for the text file. This will take away all the unneeded frames and give you a new video at 29.97 frames per second.
You may notice that the avi file plays a little faster than it should now. This can be remedied more. Just add "AssumeFPS(23.976)" to your Avisynth script.
The only downfall to this is that the segments that played at 29.97 will now be going slower than they should because the frame rate was changed to 23.976 but you can always speed them up slightly in your editing program. There might be slight jerkiness, but it will probably be minor, if at all.
119fps is definitely the problem. This means that part of your video was playing at 23.976 and some at 29.97. A lot of unneeded frames were added to the variable frame rate to make it play back at the correct speed. You want to get rid of these frames and make the video play at a constant frame rate. A program called "tcConv" can help you with this.
If you have the AMVapp installed, you can go to Start>Programs>AMVapp>Support Tools>"tcConv." If not, go here and install the last package at the bottom of the first post.
Once opened, underneath the first tab import the original AVI file (before the extra frames were hard-coded to the video) and enter in the output name and a name for the text file. This will take away all the unneeded frames and give you a new video at 29.97 frames per second.
You may notice that the avi file plays a little faster than it should now. This can be remedied more. Just add "AssumeFPS(23.976)" to your Avisynth script.
The only downfall to this is that the segments that played at 29.97 will now be going slower than they should because the frame rate was changed to 23.976 but you can always speed them up slightly in your editing program. There might be slight jerkiness, but it will probably be minor, if at all.
-
Illwilledmarine
- Joined: Sun Mar 25, 2007 12:06 pm
- Location: Phoenix, AZ
Ah! I see...I see...
I didn't have tvConv, but I went to your link and installed it and I converted it the way you suggested. I haven't slowed down the clip using avisynth yet, but I was able to convert it just fine into Huffyuv, and was able to play it inside my editing program. I will add the avisynth script in it too (easier to just speed up a few areas instead of slowing down a lot) but I need to give myself a crash course in avisynth (its been a while since I used it, so ill hit the stickys on the forum
)
Thanks for the help Melichan you're the best!
I didn't have tvConv, but I went to your link and installed it and I converted it the way you suggested. I haven't slowed down the clip using avisynth yet, but I was able to convert it just fine into Huffyuv, and was able to play it inside my editing program. I will add the avisynth script in it too (easier to just speed up a few areas instead of slowing down a lot) but I need to give myself a crash course in avisynth (its been a while since I used it, so ill hit the stickys on the forum
)Thanks for the help Melichan you're the best!
-
Melichan923
- Joined: Tue May 30, 2006 8:21 am
- Location: New Hampshire
- Contact:
