Set PATH_FFMPEG=E:\PortableApps\VideoProcessing\ffmpegĮcho - BATCH STARTING %%~na%%~xaįfmpeg.exe -report -loglevel verbose -i "%%~na%%~xa" -map 0:a:0 -f wav -acodec pcm_f32le -ac 2 -af pan=stereo:FL=0.25*FL+FC+0.6*LFE:FR=0.25*FR+FC+0.6*LFE - | qaac.exe -tvbr 127 -quality 2 -rate keep -ignorelength -no-delay -o "%%~na-ffmpeg.m4a" 1>qaac.log 2>&1 Set PATH_QAAC=E:\PortableApps\VideoProcessing\qaac Set PATH_MKVMERGE=E:\PortableApps\VideoProcessing\mkvtoolnix Try it out and you will notice a much better movie watching experience for 5.1 to 2.0 converted movies. (Especially for watching movies in the night where you don't want to wake others but still want to be able to hear dialogues).
This preset solves the problem of you having to constantly fiddle with the volume knob when watching DTS 5.1 converted to 2.0 movies in order to hear dialogues. This "nightmode" preset uses the following channel matrix:Īs you can see - front center (dialogues) come in properly now and stay at the original level - while the music and explosions remain a background effect and don't overpower you. Ffmpeg.exe -report -loglevel verbose -i "videofile.mkv" -map 0:a:0 -f wav -acodec pcm_f32le -ac 2 -af pan=stereo:FL=FC+0.30*FL+0.30*BL:FR=FC+0.30*FR+0.30*BR - | qaac.exe -tvbr 127 -quality 2 -rate keep -ignorelength -no-delay -o "audio-2ch-downmix.m4a"
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