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Bit rate in video rendering and converting softwares

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Levan Katsadze
Bit rate in video rendering and converting softwares
on Nov 11, 2011 at 9:23:14 am

Hello, I want to find out more about bit rate-size of a video.

Well, concretely, I want to convert (from mkv to H.264/MPEG4-AVC) a video or a movie from 720p to 320x240. But I have one big problem: I want the output video to be maximum (highest) quality, and also I want it to be smallest by size.

exactly, I mean, for example a video in 320x240 and H.264/MPEG4-AVC, has highest quality at 800kbps and I don't know about it, then I convert the video at 1000 kbps, so the distinction of the bit rates: 1000-800=200 just increases size of the video, and quality is the same as in 800kbps. So, I mean that I want to know what is the maximum bitrate of a 320x240 video quality (in H.264/MPEG4-AVC) to vindicate smaller size. Or, is there any formula or something like that to calculate maximum quality bitrates of different kinds of resolutions of videos, for example 1280x720 or 1920x1080.
so please, please, help me
Thanks a lot.....

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