I'm using latest AE version in windows.
When I use aerender to render-out a video in QuickTime H.264 format, the audio in the audio file gets abruptly cut-off halfway through the video. Opening the audio file (importing the file) in After Effects GUI shows the audio waveform abruptly ending halfway through the file. But when opening the original file (before using aerender), the audio waveform is complete.
Do you know what the problem might be?
Try to send the composition to Adobe Media Encoder to create your H264 files. Go to Composition > Add to Adobe Media Encoder Queue. In Media Encoder you have a lot of H264 options.