Dear all, Since re-installation of my PC to Win10 1809 Home updated with VAC 4.60, ffmpeg 4.0.1 can no longer capture Line 1 (Virtual Audio Cable) with ideal output as mentioned in my previous posts.The volume meter in Control Panel or Settings didn't give a go and it seemed there's nothing about any level changes as shown in Line 1's recording device instance. But VAC's Audio Router MME runs fine with forcibly setting cable format to not ranged and performs in/out channel redirection well. Has anyone encountered issue like this so far (no sound with DirectSound captures)?
Best regards, Chang On Sat, Mar 16, 2019 at 10:57 PM Sound Yuan <soundyuanoffic...@gmail.com> wrote: > Hi again, > > For anyone interested, I used ffplay to minimize the wait-start time and > maybe the resource cost after the post. However tonight it won't work > anymore on my Win10: It just insists converting my 5.1 ffplay sound pipe > into stereo, so I changed back to second-best VLC player option and it > plays fine now. Now I can study online videos(!) with non-interfering > background music. > > Best regards, > > On Wed, Feb 13, 2019 at 8:47 AM Sound Yuan <soundyuanoffic...@gmail.com> > wrote: > >> Hi, >> >> It's the pan filter's magic now. Thanks to everyone involved. >> >> ffmpeg -f dshow -i audio="Line 1 (Virtual Audio Cable)" -filter_complex >> "pan=5.1|BL=c0|BR=c1" -vn -f wav -vol 1024 - | "C:\vlc-3.0.6\vlc.exe" - >> --prefetch-buffer-size=400 >> >> Best regards, >> >> On Tue, Feb 12, 2019 at 9:44 PM Moritz Barsnick <barsn...@gmx.net> wrote: >> >>> On Tue, Feb 12, 2019 at 12:26:55 +0800, Sound Yuan wrote: >>> > Thanks for the suggestion. Forgot to tell that Line 1 is the real >>> output >>> > whereas Line 2 is a silenced source for nullifying front channels. I >>> use >>> > two cables separately for rear and front jacks, with earphones >>> attached to >>> > front one's extension and stereos to the rear's; Would try the quad >>> > configuration when home after-hours. >>> [...] >>> > > > On Feb 11, 2019, at 6:42 PM, Sound Yuan < >>> soundyuanoffic...@gmail.com> wrote: >>> > > > >>> > > > ffmpeg -f dshow -rtbufsize 4 -i audio="Line 1 (Virtual Audio >>> Cable)" -f >>> > > dshow -rtbufsize 4 -i audio="Line 2 (Virtual Audio Cable)" -f dshow >>> > > -rtbufsize 4 -i audio="Line 2 (Virtual Audio Cable)" -filter_complex >>> > > "[0:a][1:a][2:a]amerge=inputs=3[a]" -map "[a]" -ar 48000 -vn -f wav >>> - | >>> > > ffmpeg -i - -filter_complex >>> > > >>> "channelmap=map=FL-BL|FR-BR|FC-FC|LFE-LFE|BL-FL|BR-FR:channel_layout=5.1” >>> > > -vn -f wav -vol 1024 - | "C:\vlc-3.0.6\vlc.exe" - >>> --prefetch-buffer-size=400 >>> >>> I'm quite sure you can also chain the filters from the first and the >>> second ffmpeg command. This could in turn reduce some of the latency. >>> >>> > >>> $ [...] -filter_complex >>> "[0:a][1:a][2:a]amerge=inputs=3,channelmap=map=FL-BL|FR-BR|FC-FC|LFE-LFE|BL-FL|BR-FR:channel_layout=5.1" >>> [...] >>> >>> (without judging about the use of the filters for your use-case). >>> >>> Moritz >>> _______________________________________________ >>> 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". >> >> _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
