2018-03-17 3:33 GMT+01:00, Courtland Idstrom <cidst...@telltalegames.com>: > Hi - > > I'm working with a post-production workflow to mux 5.1 wav audio into a mov > file (each channel specified as a separate track), with correct channel > assignments written as metadata. I'm able to get everything except for the > Center channel to appear correctly when viewed in Quicktime, however the > Center channel shows up as 'mono'. > > I'm using a command like this (other channels omitted for the sake of > brevity): > > ffmpeg -i input.mov \ > -i audio.wav \ > -filter_complex "[1:0]pan=FC|c0=c0[FC]" \ > -map 0:v \ > -map "[FC]" \ > -c:v copy \ > -c:a pcm_s24le \ > output.mov > > This ends up writing a 'chan' tag that indicates Mono content > (MOV_CH_LAYOUT_MONO). If I use a different channel, such as "FL", it writes > a value that Quicktime understands (layout=MOV_CH_LAYOUT_USE_BITMAP > bitmap=0). After some tracing, it appears that this configuration comes > from the layout defined in mov_ch_layout_map_1ch for a single center > channel. This seems like intended functionality and not a bug, but > unfortunately doesn't solve my issue.
You could still send a patch that changes this mapping to get some feedback. (I am not a fan but if there is no other simple solution...) Carl Eugen _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel