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I'm trying to run this command in Windows 10. The script ran fine with 2 60mb samples. But now trying to run it on the full video, I'm getting this error: Unable to find a suitable output format for 'libfdk_aac' libfdk_aac: Invalid argument

This is the command I'm using:

ffmpeg -i 300roae.mp4 -pix_fmt yuv420p10le -c:v libx265 -preset ultrafast -crf 28 -x265-params -c:a libfdk_aac -profile:a aac_he -b:a 72k C:\Users\hifim\Videos\300roae.mp4

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The error is happening because the -x265-params option is missing the required parameter. Instead of a real parameter to pass to libx265, it is swallowing the audio codec option. See Passing Options in FFmpeg's "H.265/HEVC Video Encoding Guide".

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  • yes i see the mistake now..I had this in there before -x265-params profile=main10. I added it back and its running fine now..Thanks
    – dkrus
    Mar 31, 2023 at 10:18

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