I used free software to do that, but I should advise that although it's quite easy to actually do, there is a bit of a 'learning curve' involved with the 'not very user friendly' software. both free, but as I say, not very 'friendly' to start with. You can probably get similar results from within Vegas by using the 'Twixtor' plugin, but it's not cheap, and you'd need to confirm that it performs well for this task with someone who's actually used it for frame rate conversion. Your clip look very good even in 25, i'll be happy with that! It really all depends how important 'jerky' motion is to your final project?.Hi thank you for your answers, It really all depends how important 'jerky' motion is to your final project?. With the optical flow technique, you have no risk of having the sound shifting from the video?Ĭan you explain me quickly (is that possible?) how did you do using Avisynth and Mytools? technically i have 2 entire chapters to convert from 30 to 25, so if i render each chapter in 30 to have a good quality, i will just have 2 files to convert, that looks possible (well, i do not know how complicated it is.). In fact, it is uncompressed in real-time, and every second your processor and video card do millions of calculations. The more video has been compressed, the harder it is to decompress it in real-time. That’s why the GoPro video can be very slow because it’s super-compressed.

On the other hand, you can play very large uncompressed AVI videos that play very smoothly in the preview window. When you play a video in the preview window, you often have several different video tracks playing at the same time, and some of those tracks also have video effects applied. That’s a lot of different information that has to be calculated at 25 or up to 60 frames per second! There is a very simple way to understand all of this. Why does Sony Vegas Preview lag behind Windows How long does it usually take a computer to render a 5-minute video? Let’s say it takes 10 or 15 minutes. This problem grew into a huge epidemic when people started switching from standard-definition cameras to AVCHD camcorders but was still using their old computer with a dual-core processor. Full 1080p HD video is up to six times larger in size than standard-definition video used on DVDs.

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