DownloadFor your convenience, a list of frequently asked questions is provided below. Please be sure to review this list, as it is very possible that your question has already been answered here. If the solution you seek is not here, please feel free to contact us.
- Q01: What is CUDA?
- Q02: What is DXVA?
- Q03: The size of the output video is too large, why and how can I get it smaller?
- Q04: I'd like to adjust the order of the videos that I want to convert. How should I do?
- Q05: How long will it take to convert a video to audio file?
- Q06: How can I know what codec an AVI file is using?
- Q07: Is there some limitation to the format of the input?
- Q08: Can Free CUDA Movie Converter convert video for mobile phones as well?
- Q09: I am not satisfied with the output file? How can I make it better?
- Q10: Where to find the converted files?
A: CUDA, or Compute Unified Device Architecture, is NVidia's technology which ensures dramatic increases in software performance by using the GPU power. CUDA works in some video games, 3D apps, web browsers, TV out tools, and video apps. However, not all software functionality can be GPU assisted, e.g. video encoding tools can speed up only conversion to H.264 codec. It means that you can convert video times faster with Free CUDA Movie Converter, if you choose AVI, MP4, MKV, Apple, Android, and Sony as output formats. Don't forget that CUDA works only with NVidia graphics cards, starting with GeForce 8 series and later. Just don't forget to update the video card driver if your card supports CUDA.
A: DirectX Video Acceleration, or DXVA, is Microsoft's technology for the Windows Vista, 7 and Xbox 360 platforms that allows video decoding to be GPU accelerated. DXVA is more picky than CUDA: it works only for video decoding and only for files with input H.264, MPEG2, and VC-1 codecs. This technology is majorly used by video converters, DVD rippers, and video players. A big plus is that the list of supported video cards includes ATI Radeon HD, NVidia GeForce, and some Intel cards. So chances that your graphics card supports DXVA are rather high. Please note that Free CUDA Movie Converter supports DXVA only for H.264 and MPEG2 decoding. It means that DXVA starts working on your PC when you rip DVD or convert AVI/MKV/MP4 with H.264 video codec. The best results may be achieved if you convert a high resolution video to a smaller resolution one.
Q03: The size of the output video is too large, why and how can I get it smaller?
A: The size of the output video is decided by the quality of it. If you want to get it smaller, please decrease the quality by selecting a preset with lower parameters such as Video Bitrate, Audio Bitrate, Sample Rate, etc. And of course, the shorter the time duration, the smaller the file size is.
Q04: I'd like to adjust the order of the videos that I want to convert. How should I do?
A: After loading videos, please highlight the video you want to move and click "Move Up" or "Move Down" to move it to the ideal position. You can also directly drag it to the place you want.
Q05: How long will it take to convert a video to audio file?
A: It is hard to answer it generally. The time depends on many elements such as the speed of the CPU, duration of the input video, quality of the output video and so on. The converter shows an estimated "Time Remaining" when the conversion is processed.
Q06: How can I know what codec an AVI file is using?
A: At first, right-click on the AVI file in Windows Explorer, and then click Properties item in the popup menu. At last, please select the Summary tab in the popup dialog, and you can get all information you need.
Q07: Is there some limitation to the format of the input?
A: Free CUDA Movie Converter allows you to convert video files in nearly all popular video formats like AVI, MPEG, H.264, SWF, MOV, WMV, etc. for playback on popular devices like iPod, iPad, iPhone, PSP and so on.
Q08: Can Free CUDA Movie Converter convert video for mobile phones as well?
A: Yes. Free CUDA Movie Converter converts video to 3GP, MP4, MPEG, etc. formats which are compatible with mobile phones.
Q09: I am not satisfied with the output file? How can I make it better?
A: The output file quality depends largely on the source file. You may choose a higher bit rate or modify settings like contrast, dimensions, length, and audio volume, etc., if the output one is not as good as the original one.
Q10: Where to find the converted files?
A: When the conversion is finished, you can see a brief task report and an "Open folder" button. Click the button to directly open the output folder.
