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• Using ffmpeg for stream encryption by srtp in windows

  11 avril 2015, par user3248865

  I have been trying to make encrypted stream via ffmpeg and I´ve found srtp support in this library (ffmpeg documentation). Unfortunately, it seems that encryption doesn´t work at all. I´m using the following command to send stream :

  ffmpeg -re -i "output.mpg" -vcodec libx264 -f flv "srtp://192.168.0.100:7777?srtp_out_suite=AES_CM_128_HMAC_SHA1_80&srtp_out_params=00108310518720928b30d38f41149351559761969b71d79f8218a39259a7"

  and this one for stream receiving :

  ffplay "srtp://192.168.0.100:7777?srtp_in_suite=AES_CM_128_HMAC_SHA1_80&srtp_in_params=00108310518720928b30d38f41149351559761969b71d79f8218a39259a7"

  They work good.
  But, If I change the command for ffplay to this one :

  ffplay udp://192.168.0.100:7777

  it works too and I can watch the video. So, it means that encryption for srtp doesn´t work ?

  1. Is the stream encryption by using ffmpeg possible (not only srtp) ?
  2. If so, What am I doing wrong ?

  Thanks in advance.

  An output from ffmpeg -re -i ... command is :

  Input #0, mpeg, from 'outpu.mpg':
  
  Duration: 00:03:20.01, start: 0.529089, bitrate: 475 kb/s
  
  Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p(tv), 352x288 [SAR 1:1 DAR 11:
  
  9], 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
  
  Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16p, 64 kb/s
  
  [libx264 @ 023633e0] using SAR=1/1
  
  [libx264 @ 023633e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 023633e0] profile High, level 1.3
  
  [libx264 @ 023633e0] 264 - core 138 r2358 9e941d1 - H.264/MPEG-4 AVC codec - Cop
  
  yleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
  
  lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
  
  e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
  
  ma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 i
  
  nterlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
  
  b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenec
  
  ut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=
  
  0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, flv, to 'srtp://192.168.0.106:7777?srtp_out_suite=AES_CM_128_HMAC_SHA
  
  1_80&srtp_out_params=00108310518720928b30d38f41149351559761969b71d79f8218a39259a
  
  7':
  
    Metadata:
  
      encoder         : Lavf55.19.100
  
     Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 352x288
  
  [SAR 1:1 DAR 11:9], q=-1--1, 1k tbn, 25 tbc
  
     Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 44100 Hz, ster
  
     eo, s16p
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg1video -> libx264)
  
    Stream #0:1 -> #0:1 (mp2 -> libmp3lame)
  
  Press [q] to stop, [?] for help
  
  frame=   14 fps=0.0 q=0.0 size=       0kB time=00:00:00.13 bitrate=  23.2kbits/s
  
  frame=   27 fps= 27 q=0.0 size=       0kB time=00:00:00.65 bitrate=   4.7kbits/s
  
  frame=   40 fps= 26 q=0.0 size=       0kB time=00:00:01.15 bitrate=   2.7kbits/s
  
  frame=   52 fps= 26 q=28.0 size=       3kB time=00:00:01.67 bitrate=  16.8kbits/
  
  ...

  Edit :

  I have tried the above ffmpeg command with srtp_out_suite=NmcxMmQ2ZjVnYjEyNmRmMTV2czY1YWR2ZjFhc2Rm, but udp stream is still playing well.

• ffmpeg gives an error Option movflags not found

  12 juillet 2013, par Hemant

  In Ubuntu 12.04 LTS I have used -movflags frag_keyframe+empty_moov in my ffmpeg command :

  ffmpeg -i http://filesbe.vocativ.internal.net/03/44/SN/q1/xg/xl/0344SNq1xgxl.flv \
  
  -crf 32.0 -g 250 -keyint_min 25 -aspect 4:3  -movflags frag_keyframe -vcodec \
  
  libx264 -acodec aac -strict experimental -ar 44100 -ac 2 -b:a 128k -map 0:0 \
  
  -map 0:1 -f flv -y test.flv
  
  
  
  ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
  
    built on Apr  2 2013 17:02:36 with gcc 4.6.3
  
  *** THIS PROGRAM IS DEPRECATED ***
  
  This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
  
  [flv @ 0x10569a0] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, flv, from 'http://filesbe.vocativ.internal.net/03/44/SN/q1/xg/xl/0344SNq1xgxl.flv':
  
    Metadata:
  
      starttime       : 0
  
      totalduration   : 64
  
      totaldatarate   : 710
  
      bytelength      : 5674798
  
      canseekontime   : true
  
      sourcedata      : BADC23401MH1326550770698632
  
      purl            :
  
      pmsg            :
  
    Duration: 00:01:03.96, start: 0.000000, bitrate: 718 kb/s
  
      Stream #0.0: Video: h264 (Main), yuv420p, 854x480, 590 kb/s, 25 tbr, 1k tbn, 50 tbc
  
      Stream #0.1: Audio: aac, 44100 Hz, stereo, s16, 128 kb/s
  
  [buffer @ 0x105c600] w:854 h:480 pixfmt:yuv420p
  
  [movie @ 0x105c440] seek_point:0 format_name:(null) file_name:/home/assetproxy/htdocs/transcoder/helper_asset/voca_scaled.png stream_index:0
  
  [overlay @ 0x1060840] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed filter 0 movie' and the filter 'Parsed filter 1 overlay'
  
  [scale @ 0x11d8300] w:90 h:51 fmt:rgb24 -> w:90 h:51 fmt:yuva420p flags:0x4
  
  [overlay @ 0x1060840] main w:854 h:480 fmt:yuv420p overlay x:754 y:419 w:90 h:51 fmt:yuva420p
  
  [overlay @ 0x1060840] main_tb:1/1000000 overlay_tb:1/25 -> tb:1/1000000 exact:1
  
  [libx264 @ 0x1059d20] using SAR=191/255
  
  [libx264 @ 0x1059d20] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
  
  [libx264 @ 0x1059d20] profile Main, level 3.0
  
  [libx264 @ 0x1059d20] 264 - core 120 r2151 a3f4407 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=6 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=32.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.41 aq=1:1.00
  
  Option movflags not found.

• How to embed an MP4 inside a PDF ?

  19 août 2020, par malat

  I am a happy user of img2pdf. This tool does the minimal amount of work to put a series of JPEG 2000/JPEG/PNG images into a PDF "enveloppe". However I am now faced with a new challenge : embed a MP4 file into a PDF "enveloppe".

  


  I see that commercial tool can do it, as seen at :

  


  

  • Add audio, video, and interactive objects to PDFs

  


  


  Here is one such sample PDF file (no Flash required on windows in this sample) :

  


  

  • https://gitlab.com/agrahn/media9/-/issues/9#note_345903962
** https://gitlab.com/agrahn/media9/uploads/90fddd777e0ec514c39c924cd8d3b688/video_test.pdf

  


  


  It seems to have been introduced in ISO 32000-1 (PDF 1.7 Extension Level 5)

  


  I am looking for a solution which will use the Rich Media annotation inside the PDF stream.

  


  There are dozen of duplicated questions on superuser/stackoverflow, which all pretty much refer to imagemagick/convert command line tool. But in my case, convert expand the images into a multi-page PDF (which is not my desired behavior) :

  


  $ convert input.mp4 output.pdf
$ pdfinfo output.pdf 
Title:          out
Producer:       https://imagemagick.org
CreationDate:   Wed Aug 19 15:38:01 2020 CEST
ModDate:        Wed Aug 19 15:38:01 2020 CEST
Tagged:         no
UserProperties: no
Suspects:       no
Form:           none
JavaScript:     no
Pages:          1601
Encrypted:      no
Page size:      352 x 288 pts
Page rot:       0
File size:      534407296 bytes
Optimized:      no
PDF version:    1.3


  


  with :

  


  $ convert --version
Version: ImageMagick 6.9.10-23 Q16 x86_64 20190101 https://imagemagick.org
Copyright: © 1999-2019 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC Modules OpenMP 
Delegates (built-in): bzlib djvu fftw fontconfig freetype jbig jng jpeg lcms lqr ltdl lzma openexr pangocairo png tiff webp wmf x xml zlib


  


  and

  


  $ file input.mp4 
input.mp4: ISO Media, MP4 Base Media v1 [IS0 14496-12:2003]
$ ffprobe -v quiet -print_format json  -show_streams input.mp4 | grep codec_long_name
            "codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",