Ulf Zibis via ffmpeg-user (HE12025-10-08): > yes, i can simply transcode such files to MP3 with FFMPEG, but my > question is, how this is done in deep. > > Does FFMPEG simply extract the left and right front channels or is > there some calculation made from all 6 channels?
It is very unlikely that FFmpeg loses information like that. Your best course of action is to test yourself: generate a channel test file, transcode it and measure the volume of each part. Do not forget to report your findings here. > Also I have the subjective impression, that after normal transcoding, > the resulting MP3 has slight less quality, even when I use -q1 > quality. I'm wondering that I can hear the difference with my 65 years > old ears, because I don't recognize a quality constraint even with > some 128 kb/s CBR MP3 files. Yes, MP3 sucks, MP3 has been sucking for more than a quarter of a century now. > Are there some settings to optimize this transcoding? Use a modern codec. Regards, -- Nicolas George _______________________________________________ ffmpeg-user mailing list -- [email protected] To unsubscribe send an email to [email protected]
