Audio and video mixing with php or .net -

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here queries :

[1] audio file mixing

need mix (not merge) 2 audio files (.mp3) create 1 single file (.mp3). bit rates of audio files mixed same , bit rate of final mixed file should remain same.

[2] create custom video

also need create video (.mp4 or .mpg) few different transitions (atleast 5-6) using available images show slide show , audio file played in background.

all required achieved using .net , php both. need suggestions related 3rd party tools/libraries (free or paid) can used.

let me know if more details required.

you want investigate http://sox.sourceforge.net/, command line audio processing utility. can invoke either php or .net (a win binary available) executing via shell.

never used it, , it's not clear how , want mix. have consult manpage http://sox.sourceforge.net/sox.html unless need effects it's just:

system("sox input1.mp3 input2.mp3 mix output.mp3");

merging audio , images video file quite simple ffmpeg, it's again simple invoke via commandline. mencoder allows more transitions.


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