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  • Le profil des utilisateurs

    12 avril 2011, par

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  • HTML5 audio and video support

    13 avril 2011, par

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    15 novembre 2010, par

    Accéder à la configuration et ajouter des langues prises en compte
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Sur d’autres sites (7642)

  • 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 :

    


    


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

    


    


    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",


    


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