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• FFMPEG stream to youtube crashing

  29 septembre 2022, par jakeb

  We have a script that runs FFMPEG and broadcasts a tab recording from puppeteer, it will run fine for a period of time, but if the chromium tab from puppeteer ends up doing certain things (playing a youtube video, for example) FFMPEG crashes. It doesn't matter if the video is 4k 60 FPS, or if it's a 480i video from 2009, the result seems to be the same.

  


  This is the FFMPEG command we're running :

  


  ffmpeg -loglevel info -i - -c:v libx264 -b:v 15000k -preset ultrafast -tune animation -force_key_frames "expr:gte(t,n_forced*2)" -sc_threshold 0 -c:a aac -minrate 15000k -s 1920x1080 -r 60 -vsync 1 -max_muxing_queue_size 1024 -max_interleave_delta 0 -f flv -flvflags no_duration_filesize "rtmps://a.rtmps.youtube.com/live2/*****"


  


  This is the output when it crashes :

  


  frame= 6554 fps= 57 q=0.0 size=   17033kB time=00:02:00.02 bitrate=1162. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6564 fps= 56 q=1.0 size=   17189kB time=00:02:01.02 bitrate=1163. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6566 fps= 56 q=0.0 size=   17224kB time=00:02:02.05 bitrate=1156. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6570 fps= 56 q=1.0 size=   17276kB time=00:02:03.07 bitrate=1149. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6580 fps= 55 q=2.0 size=   17431kB time=00:02:04.10 bitrate=1150. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6602 fps= 55 q=0.0 size=   17730kB time=00:02:05.12 bitrate=1160. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6648 fps= 55 q=1.0 size=   18802kB time=00:02:06.12 bitrate=1221. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6710 fps= 55 q=0.0 size=   18824kB time=00:02:07.15 bitrate=1212. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6770 fps= 55 q=0.0 size=   19539kB time=00:02:08.17 bitrate=1248. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 6831 fps= 55 q=1.0 size=   19560kB time=00:02:09.19 bitrate=1240. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 7013 fps= 56 q=0.0 size=   21011kB time=00:02:10.39 bitrate=1320. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 7256 fps= 58 q=0.0 size=   22483kB time=00:02:10.52 bitrate=1411. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 7625 fps= 60 q=0.0 size=   24692kB time=00:02:10.58 bitrate=1549. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 7828 fps= 62 q=2.0 size=   25456kB time=00:02:10.82 bitrate=1594. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 7895 fps= 62 q=0.0 size=   35079kB time=00:02:12.03 bitrate=2176. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 7936 fps= 62 q=2.0 size=   42929kB time=00:02:12.83 bitrate=2647. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 7981 fps= 62 q=2.0 size=   53139kB time=00:02:13.53 bitrate=3259. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 8030 fps= 62 q=0.0 size=   63944kB time=00:02:14.32 bitrate=3899. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 8081 fps= 62 q=0.0 size=   74523kB time=00:02:15.16 bitrate=4516. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 8128 fps= 62 q=2.0 size=   84385kB time=00:02:15.94 bitrate=5084. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 8145 fps= 62 q=1.0 size=   87711kB time=00:02:16.24 bitrate=5273. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 8193 fps= 62 q=1.0 size=   98046kB time=00:02:17.01 bitrate=5862. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 8204 fps= 62 q=0.0 size=  100564kB time=00:02:17.27 bitrate=6001. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 8252 fps= 62 q=0.0 size=  110255kB time=00:02:18.04 bitrate=6543. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
frame= 8266 fps= 62 q=2.0 size=  113024kB time=00:02:18.29 bitrate=6695. 5d7095f4-8035-4dc5-85e1-535f90d1935b   
[tls @ 0x563ee0299440] Error in the push function.
av_interleaved_write_frame(): Input/output error
    Last message repeated 2 times
Error writing trailer of rtmps://a.rtmps.youtube.com/live2/****: Input/output error
frame= 8311 fps= 62 q=2.0 Lsize=  123071kB time=00:02:19.02 bitrate=7252.1kbits/s dup=7716 drop=1 speed=1.04x    
video:123035kB audio:202kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[tls @ 0x563ee0299440] The specified session has been invalidated for some reason.
    Last message repeated 1 times
[libx264 @ 0x563ee026fe80] frame I:70    Avg QP: 0.31  size:221022
[libx264 @ 0x563ee026fe80] frame P:2770  Avg QP: 0.05  size: 29868
[libx264 @ 0x563ee026fe80] frame B:5471  Avg QP: 1.56  size:  6271
[libx264 @ 0x563ee026fe80] consecutive B-frames:  0.8%  1.7% 97.5%
[libx264 @ 0x563ee026fe80] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x563ee026fe80] 
mb P  I16..4:  1.8%  0.0%  0.0%  P16..4:  5.2%  0.0%  0.0%  0.0%  0.0%    skip:93.0%
[libx264 @ 0x563ee026fe80] mb B  I16..4:  0.1%  0.0%  0.0%  B16..8:  0.6%  0.0%  0.0%  direct: 2.8%  skip:96.5%  L0:46.8% L1:38.5% BI:14.7%
[libx264 @ 0x563ee026fe80] final ratefactor: -5.03
[libx264 @ 0x563ee026fe80] coded y,uvDC,uvAC intra: 50.9% 43.8% 40.5% inter: 2.3% 1.8% 1.7%
[libx264 @ 0x563ee026fe80] i16 v,h,dc,p: 53% 30%  4% 12%
[libx264 @ 0x563ee026fe80] i8c dc,h,v,p: 58% 24%  8% 10%
[libx264 @ 0x563ee026fe80] kb/s:7653.50
[aac @ 0x563ee0282500] Qavg: 61059.410
Conversion failed!
[ERROR] 16:33:59 Error: write EPIPE


  


• YouTube-DL Python details of extracted audio file are not displayed

  16 septembre 2020, par Sushil

  I have written a small piece of code in python to extract the audio from a YouTube video. Here is the code :

  


  from __future__ import unicode_literals
import youtube_dl

link = input("Enter the video link:")

ydl_opts = {
    'format': 'bestaudio/best',
    'postprocessors': [{
        'key': 'FFmpegExtractAudio',
        'preferredcodec': 'mp3',
        'preferredquality': '192',
    }],
}
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    info_dict = ydl.extract_info(link, download=False)
    video_title = info_dict.get('title', None)

path = f'D:\\{video_title}.mp3'

ydl_opts.update({'outtmpl':path})

with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    ydl.download([link])


  


  This is the folder where the output audio file is saved :


  


  As you can see, all the details of the audio file are displayed, such as Date Modified, Type and Size.

  


  However, if I change path = f'D:\\{video_title}.mp3' to path = f'D:\\YT_Files\\{video_title}.mp3', then the file details are not getting displayed.


  


  Any idea about why this is so ? Is there any way to solve this problem ? Any help would be appreciated. Thanks.

  


• Can you stream multiple video clips to youtube or twitch with a separate audio track with a different length than the video clips with FFMPEG ?

  8 juin 2020, par Fight Fire With Fire

  What I'd like to do is stream a set of video clips to youtube or twitch using FFMPEG. Right now i loop thru the videos file names in a list called DIRECTORY. video[0] is the file name and send to stream_url with the audio for the video attached.

  



  What i would love to figure out, is there a way I could mux in a single audio track streaming to youtube/twitch but switch the video clips out live. Here is the code I am working with right now :

  



  
     for video in directory:
            command = [
            "ffmpeg" , "-re" , "-i" , video[0] ,
            "-vcodec" , "libx264", "-pix_fmt", "yuv420p",
            "-preset" , "medium" , "-r" , "30" , "-g" , "48" , "-b:v" , "2500k" ,
            "-acodec" , "libmp3lame" , "-ar" , "44100", "-threads" , "6" ,
            "-q:a" , "3" , "-b:a" , "712000" ,"-bufsize", "512k" , "-f" ,
            "flv" , STREAM_URL,
        ]
             subprocess.run(command)