2017-03-08 17:56 GMT+01:00 Richard Duran <ricd...@gmail.com>: > From what I can tell of the following output, the input audio bitrate is 85 > kb/s, and the output is 69 kb/s. > > I would like to know if it's possible to retain the source audio bitrate. I > am doing this via a batch file that loops through iPhone videos that have > varying bitrates. > > > > E:\> ffmpeg.exe -i 100APPLE\IMG_0075.MOV -vcodec copy -acodec aac > C:..\iPhone\DCIM\IMG_0075.MP4 >
Since your input already have aac audio, and you're already copying the video stream as-is, why not just "-codec copy" and be done with it? If you specify "-acodec aac" it will do a transcode, taking time, and use default values, which is obviously not what you want. Also, if you do want to transcode from aac to aac, there's no much point in trying to keep the same bitrate; it'll be lossy anyway. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
