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• Can`t Stream specific m3u8 with ffmpeg on Youtube

  20 avril 2023, par trainz

  I have problems streaming on youtube to this m3u8 playlist : http://94.23.219.56:8081/live/stroponescam/playlist.m3u8 . I don't understand what's wrong with it, with any other m3u8 file the stream starts but with this one doesn't.

  


  I mention that this playlist have video signal and it work on a player on a website.

  


  I use this ffmpeg code :

  


  ffmpeg -re -i http://94.23.219.56:8081/live/stroponescam/playlist.m3u8 -re -f lavfi -i anullsrc -c:v copy -c:a aac -ac 2 -strict -2 -flags +global_header -bsf:a aac_adtstoasc -bufsize 3000k -f flv rtmp ://a.rtmp.youtube.com/live2/xxxx-wxd7-xxxx-jw83-xxxx

  


  Please help me !

  


• Is there any way to trim YouTube video without downloading it to local machine ?

  12 août 2020, par Sonu Bamniya

  I am creating an app to trim video where a user either can upload the video file or can paste YouTube URL.
I am able to make the trimmer work for upload video using FFmpeg, but for YouTube URL, firstly I need to download the video to the local machine and then trim it using FFmpeg.

  



  I am using youtube-dl NodeJS library to save the video file to locally, but the issue is as I am allowing the user to download only 15Sec video no more than that, and I have applied validation of 60m long video, yet when I get 1080p video there are two issues.

  



  1. There is no audio in the 1080p video.


  



  and

  



  2. The video is taking too long to download locally and the process is taking almost 7-8mins to complete.


  



  For the first one, I can get the audio and video separately and then merge both of them in the video, but the second one is where I am stacked.

  



  I have added a time log I can see the trimming is taking only about 3-4 seconds, but the downloading is taking too long.

  



  Is there any way to make it work faster ? Or, Is there any way I can download only that part of the video, not the full video, in any technology.

  



  I am open to using any technology until it is working faster than my current implementation.

  



  If this is something related to server configuration, please suggest which one would work better.

  


• ffmpeg streaming to youtube slow

  1er avril 2017, par boygiandi

  I’m trying to send a video file to youtube as livestreaming. The stream command look like this

  ffmpeg -re -i "/tmp/4745.mkv" -acodec aac -pix_fmt yuv420p -bufsize 6000k -vb 400k -maxrate 1500k -deinterlace -vcodec libx264 -preset fast -g 60 -r 30 -crf 1 -f flv "rtmp ://...."

  The last line of output log look like this

  [ sh : 2017-04-01 7:19:54 ]size= 242706kB time=00:21:08.11 bitrate=1567.9kbits/s speed=0.882x

  As I understand, the speed=0.882x mean it send data to youtube slower than expected ( 1x mean streaming fine, lower mean buffering ). I tried to change some params of ffmpeg command, like change -preset fast to superfast, ultrafast : it faster but quality very bad and I still can’t control the out put speed. Sometime it’s 1x, sometime lower.
  Note that I run more than 1 ffmpeg instants at the same time, it may problem of CPU, RAM or Network, I checked them all.

  • CPU 40% ( top command )
  • RAM used 3Gb/7Gb
  • Network upload Avg : 8.45 MBit/s ( Max Upload : 70.76 Mbit/s - speedtest )

  So I don’t know what’s problem. Anyone can help ?