1.    24 Mar 2017 #1
    Join Date : Mar 2017
    Posts : 4
    Windows 10 x64

    How can I use ffmpeg commands in QWinFF?

    Iíve just started using QWinFF and I was trying to combine an audio and video file together with it.
    As I know that it supports ffmpeg commands, I tried using the ďffmpeg -i video.mp4 -i audio.m4a -c:v copy -c:a copy output.mp4Ē command in the advanced tab. Didnít work!
    Does someone have any idea what is the correct way to use ffmpeg commands in QWinFF?
      My ComputerSystem Spec
  2.    24 Mar 2017 #2
    Join Date : Aug 2016
    S/E England
    Posts : 4,543
    10 Home x64 (1709) (10 Pro on 2nd pc)

    I use FFmpeg 'raw', as it were. You have missed out the commands that tells it how to map the video and audio streams to the output file. Try:

    ffmpeg -i video.mp4 -i audio.m4a -map 0:0 -map 1:0 -c:v copy -c:a copy output.mp4

    This says map input 0 stream 0 (your video) to the output's stream 0, and input 1, stream 0 (your audio) to the output's stream 1.

    Also, I have had a few cases where the '-c:a copy' has caused problems. If it still doesn't work, leave that out and let FFmpeg recode the audio.
      My ComputersSystem Spec


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