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  • Why FFmpeg is consuming more and more bandwith when restreaming a YouTube HLS stream ?

    3 janvier 2023, par NiHuShu

    I've been creating a bot in Python which allows to copy one YouTube livestream and stream it to another channel using the HLS protocol.

    


    This is the command I'm using in Python to start the FFmpeg process :

    


    m3u8_url = streamlink.streams(stream_url)['1080p'].url
ffmpeg_process = Popen(
    ["ffmpeg", "-i", m3u8_url, "-c", "copy","-ignore_io_errors", "1", "-f", "hls", "-http_persistent", "1", '-attempt_recovery', '1',
    '-method', 'POST', '-hls_time', '1', '-hls_playlist_type', 'event', '-g', '5', '-reconnect_at_eof', '1',
    'https://a.upload.youtube.com/http_upload_hls?cid=' + stream_key + '&copy=0&file=stream.m3u8'])


    


    I'm using streamlink to extract the 1080p m3u8 playlist of a given livestream and then using "-c", "copy"I'm just passing the raw HLS stream back to YouTube servers.

    


    The problem is that at first FFmpeg is using around 1.5 Mbps for both upload and download, but as the stream progresses the used bandwidth per second grows substantially. After 5 hours FFmpeg uses 5 Mbps of upload and about half of that in download, but it just keeps on growing. It's gotten to a point where my VPS was blocked as after a few days it was using > 1500 Mbps of bandwidth (with 10 active streams).

    


    The only thing that comes to my mind is that for some reason with every .ts segment, FFmpeg is trying to send all the previous ones as well. It might be worth mentioning that YouTube Studio is complaining that the incoming stream bandwith is too low and it should be 4.5 Mbps.

    


    I've tried changing the "-method" from PUT to POST, which helped reducing the download bandwidth, but didn't change anything in regards to upload.

    


  • How to stream live event from my enigma to ustream or youtube using ffmpeg

    25 novembre 2014, par user3674244

    How to stream live event from my enigma to ustream or youtube using ffmpeg

    or how can i use m3u files to stream in ustream or youtube live

    Note : Im using windows 8.1

    thanks

  • How to stream an updating images sequence to rtmp server(youtube) with ffmpeg ?

    26 janvier 2020, par TheCuddleDoodle

    Want to stream an image sequence generated by blender to Youtube rtmp server.

    Currently using the following command to do so :

    ffmpeg -r 24 -f image2 -s 1080x1920 -i /root/sandbox/new/render%04d.png -vcodec libx264 -crf 25 -pix_fmt yuv420p -f flv rtmp://a.rtmp.youtube.com/live2/******"

    but this ends up only streaming the pre rendered images.

    are there any arguments available so that the stream doesn’t ends and while the frames are being rendered by blender and ffmpeg keeps on stacking and broadcasting the images ?

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