Folks: I'm still having trouble multiplexing a LPCM file with an MPEG-2 video stream with mplex
I'm using the command line mplex -f 8 -L 48000:2:16 -o output.mpg video.m2v audio.pcm The "audio.pcm" file is 48K , stereo, 16 bits, Motorola byte order When loaded into Adobe audition, it plays fine. After the multiplex, the audio has problems. You can hear what I'm hearing here: http://www.themeparkphoto.com/PCM/PCMclicks.mp3 I made an "mp3" file of the way the audio sounds when I play the multiplexed MPEG stream "output.mpg" . Notice the burst of noise twice a second. Now look at the screenshot from Adobe audition: http://www.themeparkphoto.com/PCM/PCMclicks.jpg Here's my guess as to what's happening: mplex is allocating a buffer to read the data into, and isn't clearing out the whole thing! There's unitialized garbage at the end of each buffer segment that's causing that burst of noise. Does this problem ring a bell with anyone? Thanks! -- Robert Swirsky http://www.themeparkphoto.com/ raswirsky (at) theme park photo (dot) com ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
