H265 encoding without hardware - ffmpeg instance creation

  • Hello guys good afternoon,

    I am trying to record H265 video content with OBS and ffmpeg.

    I have read the following thread from DL9SEC :

    To work around this, the UDP stream is not sent to the Pluto directly, but to a local FFMPEG instance running which transcodes the stream from H.264 to H.265, downscales audio (thanks to G0MJW for the hint) and send another UDP stream to the Pluto.


    The FFMPEG instance runs in a console window here with the following parameters:

    ffmpeg -i "udp://localhost:7272" -vcodec libx265 -crf 33 -preset superfast -b:v 40k -acodec ac3_fixed -strict experimental -b:a 12k -ar 12000 -vf scale=384:-2:flags=lanczos -r 12 -f mpegts "udp://"

    As I am not at all familiar with ffmpeg, I would like to know how to create the ffmpeg instance mentionned. What I mean : how must it be put into localhost? As a file , batch file ?

    I have ffmpeg running in Windows Power shell.

    Right now I am working trough OBS with the libx265 encoder from ffmpeg but I want to try to reduce the audio bitrate

    Thanks a lot for any help.

    ON7TU Lucien

  • Hello Chris,

    Thanks a lot for your assistance !!

    This topic looks very interesting, and I will of course make a test with FreeStreamCoder.

    It seems that also the LinkPi encoder is an interesting H265 box in which one can also reduce Audio bitrate lower then 32.

    I saw you are also using this box.

    73 ON7TU