问题描述
我正在尝试从视频中计算比特率，但不确定是否正确.
Im trying to calculate the bitrate from a video, but Im not sure if its correct.
我知道电影中某些公式的大小除以秒.但是我也应该用音频来计算吗?或它是如何工作的.?
I know that some of the formula is size divided with seconds on the movie.But shouldnt I calculate with the audio also ?Or how does it work. ?
exp.exp.我的视频大小为320X180，视频比特率为220(kbps)音频比特率为128.如果视频长度为10分钟(600秒)，大小为20mb(20480 kb)，那么最终的比特率应该是什么
exp. I have a video size 320X180 , video bitrate 220(kbps) Audio bitrare 128.What should the final bitrate be if the video is 10 minutes long (600s) and the size is 20mb (20480 kb)
预先感谢
推荐答案
20480kB * 8(每字节位数)/600s，可以使用273 kbps.然后减去音频速率...剩下145kbps的视频速率.我建议您降低音频和视频的传输速率.您可能还需要降低费率，以考虑到容器的开销.
20480kB*8(bits per byte)/600s which gives you 273 kbps to work with.then you subtract out your audio rate... leaving you with 145kbps, not a whole lot for video rate. I would suggest looking at a lower rate for audio and upping video. you You may also need to drop the rate a little bit to take into account the container overhead.
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