[1] 查看电话本身内存及SD卡容量.
[2] 小米手机如何网络共享(热点).
[3] 北京地铁的手机支付方式.
[4] 手机扫描仪.
1 | ffmpeg -ss 0 -t 30 -i file.mp3 file.wav |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | % Created by LI Xu % Version 1.0 % April 11, 2017 % Description: % % If you have any question about this code, % please do not hesitate to contact me via E-mail: % jeremy456@163.com % Blog: % http://blog.sciencenet.cn/u/lixujeremy % http://lixuworld.blogspot.com/ % Reference % http://stackoverflow.com/questions/7945747/how-can-you-only-extract-30-seconds-of-audio-using-ffmpeg clear; clc; timebegin=tic; cur_data=date; cur_time=fix(clock); str1=sprintf('%s %.2d:%.2d:%.2d', cur_data, cur_time(4), cur_time(5), cur_time(6)); fprintf('Time Begin: '); fprintf(str1); fprintf('\n'); % XLS xlspath='AudioInfo.xlsx'; [~, conaud]=xlsread(xlspath); conaud(1, :)=[]; % Source Directory SouDir='input'; % Destination Directory DesDir='output'; % Loop for ii=1:size(conaud, 1) rowrd=conaud(ii, :); filepath=GetFilePath(SouDir, rowrd{1}); if filepath==0 continue; end [~, filename, ext]=fileparts(filepath); inpath=fullfile(SouDir, [filename, ext]); otpath=fullfile(DesDir, [filename, ext]); if exist(otpath, 'file') delete(otpath); end % Start sttm=rowrd{2}; % Finish fitm=rowrd{3}; % Construct Sentence Constr=['ffmpeg -ss ', sttm, ' -t ', fitm, ' -i ', inpath, ' ', otpath]; disp(['...Start to process ', filename, ext, '...']); [stuat, cmdout]=system(Constr); disp(['...Finish ', filename, ext, '...']); end fprintf('Time Begin: '); fprintf(str1); fprintf('\n'); cur_data=date; cur_time=fix(clock); str2=sprintf('%s %.2d:%.2d:%.2d', cur_data, cur_time(4), cur_time(5), cur_time(6)); fprintf('Time End: '); disp(str2); timespan=toc(timebegin); fprintf('Time Span: %.4f s\n', timespan); disp('******************************************'); |