问题
I am currently extracting, decoding, editing and re-encoding a video on Android using MediaCodec and MediaExtractor on Android. In the course of this process I would like to give users some information on the progress. I am already counting how many frames were extracted, decoded and encoded. In order to compute a percentage and to show users how far the process is, I would need the total number of frames in the original stream. However, I am unable to find a method in the MediaExtractor.
Does anybody know how I can get the total number of frames in a video before I start extracting?
回答1:
you can use total video duration and current frame timestamp to show the progress
no API for total frames is available in MediaExtractor
来源：https://stackoverflow.com/questions/24750824/is-there-a-way-to-get-the-total-number-of-video-frames-on-android