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• FFmpeg : how to stream multiple http outputs

  25 octobre 2022, par Caner Demir

  I'm assigned to search for a solution to stream more than one http output in ffmpeg. I tried the code below which uses pipe, but only the last output works, other ones don't work. The solutions I tried with tee muxer also couldn't work. Any idea how can I do that ?

  


  ffmpeg -re -i sample1.mp3 -i sample2.mp3 -filter_complex amix=inputs=2 -f mp3 pipe:1 | ffmpeg -f mp3 -re -i pipe:0 -c copy -listen 1 -f mp3 http://127.0.0.1:4000 -c copy -listen 1 -f mp3 http://127.0.0.1:4010


  


  The code I tried with tee muxer is below :

  


  ffmpeg -re -i sample1.mp3 -i sample2.mp3 -filter_complex amix=inputs=2 -c:a mp3 -f tee "[listen=1:f=mp3]http://127.0.0.1:4000|[listen=1:f=mp3]http://127.0.0.1:4010"


  


  edit : shared the log with code.

  


  ffmpeg -loglevel debug -hide_banner -re -i sample1.mp3 -filter_complex asplit=2 -c:a mp3 -listen 1 -f mp3 http://127.0.0.1:4000 -c:a mp3 -listen 1 -f mp3 http://127.0.0.1:4010
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-hide_banner' ... matched as option 'hide_banner' (do not show program banner) with argument '1'.
Reading option '-re' ... matched as option 're' (read input at native frame rate; equivalent to -readrate 1) with argument '1'.
Reading option '-i' ... matched as input url with argument 'sample1.mp3'.
Reading option '-filter_complex' ... matched as option 'filter_complex' (create a complex filtergraph) with argument 'asplit=2'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'mp3'.
Reading option '-listen' ... matched as AVOption 'listen' with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'mp3'.
Reading option 'http://127.0.0.1:4000' ... matched as output url.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'mp3'.
Reading option '-listen' ... matched as AVOption 'listen' with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'mp3'.
Reading option 'http://127.0.0.1:4010' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Applying option hide_banner (do not show program banner) with argument 1.
Applying option filter_complex (create a complex filtergraph) with argument asplit=2.
Successfully parsed a group of options.
Parsing a group of options: input url sample1.mp3.
Applying option re (read input at native frame rate; equivalent to -readrate 1) with argument 1.
Successfully parsed a group of options.
Opening an input file: sample1.mp3.
[NULL @ 00000216ab345b80] Opening 'sample1.mp3' for reading
[file @ 00000216ab346180] Setting default whitelist 'file,crypto,data'
[mp3 @ 00000216ab345b80] Format mp3 probed with size=4096 and score=51
id3v2 ver:4 flags:00 len:134
[mp3 @ 00000216ab345b80] pad 576 576
[mp3 @ 00000216ab345b80] Skipping 0 bytes of junk at 561.
[mp3 @ 00000216ab345b80] Before avformat_find_stream_info() pos: 561 bytes read:32768 seeks:0 nb_streams:1
[mp3 @ 00000216ab345b80] demuxer injecting skip 1105 / discard 0
[mp3float @ 00000216ab34f3c0] skip 1105 / discard 0 samples due to side data
[mp3float @ 00000216ab34f3c0] skip 1105/1152 samples
[mp3 @ 00000216ab345b80] All info found
[mp3 @ 00000216ab345b80] After avformat_find_stream_info() pos: 22065 bytes read:32768 seeks:0 frames:50
Input #0, mp3, from 'sample1.mp3':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    encoder         : Lavf58.45.100
  Duration: 00:12:58.48, start: 0.025057, bitrate: 128 kb/s
  Stream #0:0, 50, 1/14112000: Audio: mp3, 44100 Hz, stereo, fltp, 128 kb/s
    Metadata:
      encoder         : Lavc58.91
Successfully opened the file.
[Parsed_asplit_0 @ 00000216ab34fc80] Setting 'outputs' to value '2'
Parsing a group of options: output url http://127.0.0.1:4000.
Applying option c:a (codec name) with argument mp3.
Applying option f (force format) with argument mp3.
Successfully parsed a group of options.
Opening an output file: http://127.0.0.1:4000.
Matched encoder 'libmp3lame' for codec 'mp3'.
    Last message repeated 1 times
[http @ 00000216ab44d980] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy,data'


  


• avcodec/cbs : Remove CBS_CONTENT_TYPE_POD

  19 octobre 2022, par Andreas Rheinhardt

  avcodec/cbs : Remove CBS_CONTENT_TYPE_POD
  It is equivalent to CBS_CONTENT_TYPE_INTERNAL_REFS
  
  with nb_offsets equal to zero.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/cbs.c
  • [DH] libavcodec/cbs_internal.h

• How to code Laravel FFMpeg video conversion for specific parameters ?

  7 octobre 2022, par Wayne Fulcher

  I am using Laravel 9.x running php 8.1.x.
I have some code that I use to convert videos that have a context type other than video/mp4 to a H264 format. The reason is to make a video format that is compatible with Apple (iOS), Android and most web browsers. This code has worked so far on every video we have used it on except for one.
My current code is

  


          $ffmpeg = FFMpeg::create();
        $video = $ffmpeg->open($videoFilename);
        $format = new X264();
        $format->setAudioCodec("aac"); 
        $video->save($format, $newFilename);


  


  So in an attempt to debug what else needs to be done I started manually running ffmpeg commands on my computer against a copy of the video in question. I have finally figured out what additional parameters are required to successfully convert that video so it plays on all devices. The manual command is as follows :

  


  ffmpeg -i input.mov -pix_fmt yuv420p -b:v 4000k -c:v libx264 output.mp4


  


  I am about 90% sure the parameters that dealt with the specifics of this video were the following :

  


  -pix_fmt yuv420p -b:v 4000k

  


  My problem now is I can not figure out what changes to my php code I need to make that would be the equivalent to those additional command line parameters.
Also I am wondering as I am typing this question, is there a way for me to "auto-detect" when a video requires this additional parameters or not ? (maybe that is a second post/question)