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As a movie fan, i have a lot of different format videos. But, for watching movies anywhere, i have to convert such videos for my tablet. So many videos need to be processed, so i care more about the conversion speed. The video quality is best not too bad.
I use Pavtube DVD Ripper to deal with my DVD movies and Pavtube video converter to handle common videos, such as MKV HD movies, VOB videos, Camera AVCHD or MTS/M2TS files etc. These tools all support NVIDIA CUDA technology. According to my own experience, i find some factors affecting the conversion speed.
Once, i use my old computer which has worked for 5 years to convert a DVD, it took about 5 hours for a 2-hour movie, it really bothered me. But the same movie converted on my laptop (i choose the same output) just took one hour. I analyzed the reasons. The laptop’s configuration is much higher than my old computer. It is noteworthy that the laptop use NVIDIA Graphics while the pc doesn’t.
Conclusion one:
Computer configuration: the processor, the graphics card. The faster the processor, the faster the conversion speed. If your video tool supports CUDA technology, a CUDA-enabled graphics card would be of benefit for the conversion.
Computers support for multi-process, this means we can do more things at the same time, i had tried converting a movie, at the same time, mapping with solidworks. The conversion speed was so slow that I couldn’t wait any longer. i gave up.
Conclusion two:
Computer environment: if there are other programs running while converting, the conversion efficiency would be affected.
Some HD video formats, such as MKV, AVCHD, MTS, VOB etc will take more time than common videos, higher quality with a bigger size, and will take more time.
Conclusion three:
The original file properties: length and size, format and codec, etc. Also affect the conversion speed.
I once converted a video for my HDTV, i wanted to get the full HD effect, so just choose the output size as 1920*1080. The process take about 6 hours, while i just convert it for my tablet’s resolution (1024*600), just need 2 hours.
Conclusion four:
The output settings. The higher bitrate and frame rate, the higher quality but the larger file size and the longer time it will take.
This is my personal experience about conversion speed, there should be other factors. If you have learned some, or have different views, please leave your comments.
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