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How to run this ffmpeg command lines in hybrid?
#6
The audio is reencoded, not the video.
'Base->Processing->Video' to 'passhtrough' makes sure there is no reencoding of the video.
None of the examples on the linked page does audio speedup without reencoding.

Quote:Why video doesn't need to reencode but audio does?
Video only needs time code adjustment, which is a container info.
For audio the timing is part of the format, additionally you usually want to modify the audio to not change the pitch. (to not get chipmunk or low voices)

Looking at the debug output, the audio queue entry:
D:\download\115download\1.mp4;0;aac;2;bitrate;4;FDK;low complexity;44100;0.00;en;-41;1354.025;aac;0;1;don't change;2;false;;false;1;true;1.0000;0.8000;false;false;false;;;true;48000;unknown;aac;;false;true;false;2/0/0;1/1;;0;0;;None;54:_:15;10;20;0;1000;;false;;pcm;false;1;;;;Stereo;2.77;16;-n;4;GPU;NVIDIA CUDA;;2;false;D:\download\115download\1.mp4;true;false;;;false;2;;LC;-1;
looks fine.

Looking at the audio encoding calls:
"D:\Program Files\Hybrid\64bit\ffmpeg.exe" -y -threads 8 -loglevel fatal -nostdin -i "C:\Users\Administrator\AppData\Local\Temp\iId_1_aid_0_lang_en_DELAY_-41ms_2023-02-07@01_33_24_8210_01.aac" -ac 2 -ar 44100 -f sox - | D:\Program Files\Hybrid\64bit\sox.exe" --multi-threaded --temp "C:\Users\Administrator\AppData\Local\Temp\2023-02-07@01_33_24_821001" --buffer 524288 -S -t sox - -t wav - rate -v 48000 tempo 0.80000000 | "D:\Program Files\Hybrid\64bit\fdkaac.exe" --bitrate-mode 4 --profile 2 --transport-format 0 --gapless-mode 2 --ignorelength -o "C:\Users\Administrator\AppData\Local\Temp\iId_1_aid_0_lang_en_DELAY_-41ms_2023-02-07@01_33_24_8210_02.aac" -
the audio is slowed down through sox 'tempo 0.80000000'.
-> Accodring to the debug output Hybrid is doing what it should.

Cu Selur
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RE: How to run this ffmpeg command lines in hybrid? - by Selur - 06.02.2023, 20:12

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