<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body bgcolor="#ffffff" text="#000000"> Hi   i m using faac to encode one pcm file and then using ffmux_mov to muxing that file. the file is being played in VLC player but not being played in Quick Time player..bar is moving but no audio is coming. Can u tell me the reason for this ??  i m using the pipeling given below : 1.  for 2 channel gst-launch filesrc blocksize=2048 location=/home/Gurpreet/inputfilesmp4/test1_48kHz_long.pcm ! audio/x-raw-int,rate=48000,channels=2 ! faac outputformat=1 ! audio/mpeg,rate=48000, channels=2, mpegversion=4, layer=3 ! queue ! mux. ffmux_mov name=mux ! filesink location=/home/Gurpreet/outputfilesmp4/audioCH_faac_ffmux_mov_test1.mov 2. for 1 channel gst-launch filesrc blocksize=2048 location=/home/Gurpreet/inputfilesmp4/Sample_Files/New_Folder/CH1_48000_mono_16bit.pcm ! audio/x-raw-int,rate=48000,channels=1 ! faac outputformat=1 ! audio/mpeg,rate=48000, channels=1, mpegversion=4, layer=3 ! queue ! mux. ffmux_mov name=mux ! filesink location=/home/Gurpreet/outputfilesmp4/audioCH_faac_mp4muxer.mov in both the cases file is playing in vlc but no audio is coming in quick time player but bar is moving in qt player. Thanks Gurpreet <div class="moz-signature"> <h2></h2> </div> </body> </html>