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• garbled audio when streaming to youtube using ffmpeg

  27 mai 2022, par skavish

  I am having some weird audio issues streaming to youtube using ffmpeg.

  


  The same stream on facebook and twitch is fine, but on youtube it has some garbling audio issues.

  


  Here is one of those streams : https://www.youtube.com/watch?v=zat4fhwFGUI

  


  Here is ffmpeg command which was used to stream this video. I removed input, output key and inserted newlines for readability.

  


  This command is streaming to youtube (last tee), to hls (first) and to mp4 (second). hls and mp4 do not have this audio issue. Also no issues if we add another tee to stream say to facebook as well.

  


  It happens only with youtube.

  


  I would appreciate any help or ideas on what is going on there. Thank you !

  


  ffmpeg -i XXXXXXXXXX -r 30 -preset ultrafast -tune zerolatency -threads 0 -vsync 1 -map 0:v -c:v libx264 -crf 23 -g 60.0 -sc_threshold 0 -keyint_min 60.0
-pix_fmt yuv420p -map 1:a:0 -c:a:0 aac -b:a:0 128k -ac 2 -ar 44100 -aq 0 -flags +global_header
-f tee
[f=hls:var_stream_map='v:0,a:0':select='v:0,a:0':hls_time=2.0:hls_playlist_type=event:
hls_flags=independent_segments+temp_file:master_pl_publish_rate=1:hls_segment_type=mpegts:hls_segment_filename=/tmp/10311326958150343888/stream_%v_%02d.ts:
master_pl_name=master.m3u8]/tmp/10311326958150343888/stream_%v.m3u8|

/tmp/10311326958150343888/stream.mp4|

[f=fifo:fifo_format=flv:recover_any_error=0:drop_pkts_on_overflow=1:attempt_recovery=1:recovery_wait_time=1:max_recovery_attempts=100:
onfail=ignore:format_opts=flvflags=no_duration_filesize]rtmp://a.rtmp.youtube.com/live2/xxxxxxxxxxxxxxx


  


• FFMPEG Audio Issues Youtube Live

  2 mars 2018, par Geige V

  This issue may have more to do with youtube than ffmpeg, but hopefully someone can help anyway.

  I am having the exact issue described in this post https://productforums.google.com/forum/# !topic/youtube/nHTb7ilKvrw. I would have added to it, but it is locked for some reason.

  I create a stream from a local webm file on my computer using ffmpeg. This file sounds perfectly fine, and still sounds fine when it is sent to platforms other than youtube live (twitch/facebook). On youtube live, however, the audio has static and crackles during the live feed, but the archive of the video on youtube (after processing) sounds perfectly fine. The ffmpeg command is

  ffmpeg -re -i test.webm -acodec aac -vcodec libx264 -ar 44100 -f flv rtmp://a.rtmp.youtube.com/live2/${your_key}

  Webm files from this fiddle (https://jsfiddle.net/2rgv7pgj/) will have the issue.

  If someone could offer advice it would be greatly appreciated.

• Download a youtube video without storing it on the server

  6 mai 2019, par Baraque Obahamas

  I have a personal php script that allows me to download the videos of my choice. Currently, this runs youtube-dl and if necessary convert the video, ffmpeg then.

  I’m looking for a way to allow my script to download/convert the video without even storing it on the server. Make sure that youtube-dl/ffmpeg acts as a gateway but without downloading the file.

  Do you have any idea how to do this ? The idea would be to run ffmpeg on the youtube link and not on the video after it has been downloaded, and allow the user to download it at the same time as the conversion is in progress.

  We can see that this site for example www.onlinevideoconverter.com uses this method, because if we ask for a video of 2 hours or more, it allows us to download it immediately.