Synopsis
I use Compressor to export my FCPX project to h264 .mp4 files.
Playing the file I exported today, the audio quality was bad (sounds muffled). This problem appears only in the output via Compressor.
- Playing on the FCPX timeline -> OK
- Playing the output exported via "Share" feature and "Apple Devices 720p" setting -> OK
- Playing the output exported via Compressor -> NG
There were no problem two months ago. I don't make any changes in the export settings.
Any ideas or solutions?
Environment
- Mac OS X 10.9.5 (Marvericks)
- Final Cut Pro X 10.1.4
- Compressor 4.1.3
Setting of Compressor
Output of ffprobe
audio of previous output (good quality)
Stream #0:0(jpn): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 63 kb/s (default)
Metadata:
creation_time : 2014-11-29 10:42:07
handler_name : Core Media Audio
audio track of this time output (bad quality)
Stream #0:0(jpn): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 44 kb/s (default)
Metadata:
creation_time : 2015-02-07 14:28:54
handler_name : Core Media Audio
Looking at bitrate above, it's less than one of the previous output. I retried the encoding with setting the audio bitrate to 128kbps.
Stream #0:0(jpn): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 86 kb/s (default)
Metadata:
creation_time : 2015-02-07 13:15:43
handler_name : Core Media Audio
However the problem was not solved.