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• my ffmpeg livestream keeps crashing : How do I troubleshoot ?

  12 février 2024, par n79qk272x57w46w9

  I can't find the reason on why it is crashing, all I have is a list of mp3 files which are encoded to AAC on the fly.

  


  stream.sh

  


  #!/bin/bash

ffmpeg \
-stream_loop -1 -re \
-i video.mp4 \
-safe 0 \
-f concat \
-i playlist.txt \
-c:v libx264 -preset slower -b:v 3500k -maxrate 3500k -bufsize 7000k -pix_fmt yuv420p -g 50 -c:a aac -b:a 320k -ac 2 -ar 44100 -f flv \
rtmps://---------------/s/----key----:----key----


  


  This is what journalctl collected :

  


  Feb 12 18:07:57 main bash[3236855]: [47.9K blob data]
Feb 12 18:11:38 main bash[3236855]: [48.0K blob data]
Feb 12 18:15:19 main bash[3236855]: [48.0K blob data]
Feb 12 18:18:59 main bash[3236855]: [48.0K blob data]
Feb 12 18:22:41 main bash[3236855]: [48.0K blob data]
Feb 12 18:26:21 main bash[3236855]: [48.0K blob data]
Feb 12 18:30:02 main bash[3236855]: [48.0K blob data]
Feb 12 18:33:42 main bash[3236855]: [48.0K blob data]
Feb 12 18:37:23 main bash[3236855]: [48.0K blob data]
Feb 12 18:41:03 main bash[3236855]: [48.0K blob data]
Feb 12 18:44:44 main bash[3236855]: [48.0K blob data]
Feb 12 18:48:25 main bash[3236855]: [48.0K blob data]
Feb 12 18:50:07 main bash[3236855]: [22.3K blob data]
Feb 12 18:50:07 main bash[3236855]: av_interleaved_write_frame(): Input/output error
Feb 12 18:50:09 main bash[3236855]:     Last message repeated 1 times
Feb 12 18:50:09 main bash[3236855]: [flv @ 0x5642d6c08c00] Failed to update header with correct duration.
Feb 12 18:50:09 main bash[3236855]: [flv @ 0x5642d6c08c00] Failed to update header with correct filesize.
Feb 12 18:50:09 main bash[3236855]: Error writing trailer of rtmps://------------/s/key:key: Input/output error
Feb 12 18:50:09 main bash[3236855]: frame=1215777 fps= 30 q=14.0 Lsize=18376958kB time=11:16:04.14 bitrate=3711.3kbits/s dup=0 drop=1 speed=   1x
Feb 12 18:50:09 main bash[3236855]: video:16828839kB audio:1495386kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.287779%
Feb 12 18:50:09 main bash[3236855]: [tls @ 0x5642d6bbcf40] The specified session has been invalidated for some reason.
Feb 12 18:50:09 main bash[3236855]:     Last message repeated 1 times
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] frame I:24338 Avg QP: 3.06  size: 52975
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] frame P:393923 Avg QP: 6.45  size: 24751
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] frame B:797516 Avg QP: 9.68  size:  7767
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] consecutive B-frames:  6.8% 12.2% 15.4% 65.7%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] mb I  I16..4: 47.0%  5.2% 47.9%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] mb P  I16..4:  0.8%  0.5%  4.3%  P16..4: 18.2% 13.6% 11.8%  4.1%  2.3%    skip:44.2%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] mb B  I16..4:  0.2%  0.1%  0.7%  B16..8: 21.7% 14.2%  6.4%  direct: 7.9%  skip:48.8%  L0:35.3% L1:35.8% BI:28.9%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] 8x8 transform intra:6.6% inter:16.5%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] direct mvs  spatial:99.7% temporal:0.3%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] coded y,uvDC,uvAC intra: 68.9% 62.6% 52.6% inter: 36.3% 21.5% 11.4%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] i16 v,h,dc,p: 70% 14% 13%  3%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 21% 19%  5%  5%  5%  6%  8% 10%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 23% 18%  5%  6%  6%  6%  6%  8%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] i8c dc,h,v,p: 59% 24% 12%  5%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] Weighted P-Frames: Y:2.0% UV:0.5%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] ref P L0: 69.7% 13.7%  6.8%  3.4%  2.0%  1.8%  1.3%  1.2%  0.2%  0.0%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] ref B L0: 88.7%  7.1%  2.0%  0.9%  0.7%  0.4%  0.3%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] ref B L1: 97.2%  2.8%
Feb 12 18:50:09 main bash[3236855]: [libx264 @ 0x5642d6be6300] kb/s:3398.63
Feb 12 18:50:09 main bash[3236855]: [aac @ 0x5642d6bbdd40] Qavg: 14231.606
Feb 12 18:50:09 main bash[3236855]: Conversion failed!
Feb 12 18:50:09 main systemd[1]: stream.service: Main process exited, code=exited, status=1/FAILURE
Feb 12 18:50:09 main systemd[1]: stream.service: Failed with result 'exit-code'.


  


  From this log it is hard to tell at which point and which file it started to have problems converting.

  


• PHP large video upload converting to mp3 by ffmpeg

  27 mai 2017, par SuperBerry

  I am working on a project on Linux VPS (Apache + PHP5, 4G RAM / 2 CPU Cores) which allows users to upload videos (200M max) and convert to MP3 audio files by FFMPEG. I have few questions about the concurrency and the processing because I am a newbie on PHP :

  1. If there are 10 visitors uploading (1 visitor uploads one 200M MP4 file), will it cost 2,000M memory of the server ? Will the chunk upload method could solve this memeory issue while more visitors uploading videos at the same time ?

  2. I am going to use Redis to manage the ffmpeg processing queue, and set the crontab. Should I use the shell_exec() to call the ffmpeg to process the conversion at background, then convert the uploaded videos one by one ?

  The uploading and conversion is the most cost for the server I think... Maybe my idea is extremely crazy...I am new to this type of service.. I didn’t make online projects before, just desktop apps...

  Thanks a lot for your help..

• Realtime removal of carriage return in shell

  1er mai 2013, par Seth

  For context, I'm attempting to create a shell script that simplifies the realtime console output of ffmpeg, only displaying the current frame being encoded. My end goal is to use this information in some sort of progress indicator for batch processing.

  For those unfamiliar with ffmpeg's output, it outputs encoded video information to stdout and console information to stderr. Also, when it actually gets to displaying encode information, it uses carriage returns to keep the console screen from filling up. This makes it impossible to simply use grep and awk to capture the appropriate line and frame information.

  The first thing I've tried is replacing the carriage returns using tr :

  $ ffmpeg -i "ScreeningSchedule-1.mov" -y "test.mp4" 2>&1 | tr '\r' '\n'

  This works in that it displays realtime output to the console. However, if I then pipe that information to grep or awk or anything else, tr's output is buffered and is no longer realtime. For example : $ ffmpeg -i "ScreeningSchedule-1.mov" -y "test.mp4" 2>&1 | tr '\r' '\n'>log.txt results in a file that is immediately filled with some information, then 5-10 secs later, more lines get dropped into the log file.

  At first I thought sed would be great for this : $ # ffmpeg -i "ScreeningSchedule-1.mov" -y "test.mp4" 2>&1 | sed 's/\\r/\\n/', but it gets to the line with all the carriage returns and waits until the processing has finished before it attempts to do anything. I assume this is because sed works on a line-by-line basis and needs the whole line to have completed before it does anything else, and then it doesn't replace the carriage returns anyway. I've tried various different regex's for the carriage return and new line, and have yet to find a solution that replaces the carriage return. I'm running OSX 10.6.8, so I am using BSD sed, which might account for that.

  I have also attempted to write the information to a log file and use tail -f to read it back, but I still run into the issue of replacing carriage returns in realtime.

  I have seen that there are solutions for this in python and perl, however, I'm reluctant to go that route immediately. First, I don't know python or perl. Second, I have a completely functional batch processing shell application that I would need to either port or figure out how to integrate with python/perl. Probably not hard, but not what I want to get into unless I absolutely have to. So I'm looking for a shell solution, preferably bash, but any of the OSX shells would be fine.

  And if what I want is simply not doable, well I guess I'll cross that bridge when I get there.