audio issue

[fred]

hello, I'm a FFASTRANS's newbe.
In my workflow for encoding apple prores LT to h264, my 2nd audio become mute after 23 minutes...if i change encoding in dnxhd it still doesn't work.
My apple prores LT file came from a Blackmagic Hyperdeck.
I try to put a channel mapper in my workflow, it doesn't work.
Any idee ? Thanks

[momocampo]

Hello Fred.
Thanks to use FFAStrans and welcome to this forum
First thing, I would like to know how is your source file? (apple pro res Lt but how is the audio ? how many tracks? How many channels?)
If your source file is stereo, your mp4 encoder node should be set with 1 discrete audio track and 2 audio channels.
I'm waiting your info