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• Tunnel Streaming through server

  28 octobre 2017, par Sarathvichet Heng

  I want to be able to stream a hls IPTV streaming but the origin server has country restriction. I also have a VPS server of that country so I want to stream through that VPS.
  For example : a request to server http://vps.com/tv.php?ch=2 and then stream
  But the source behind it is the origin which is http://origin.com/tv/ch2.m3u8?token...............
  I was able to bypass token and fetch the streaming url using php but don’t know how can I mask http://origin.com/tv/ch2.m3u8...... behind http://vps.com/tv.php..........
  . I don’t want to use FFMPEG because it’ll get
  data and rebroadcast a new stream and consume high vps resource.
  and If I capture packet using Wireshark while playing this http://vps.com/tv.php?ch=2 I’ll see http://origin.com/tv/ch2.m3u8?token......... behind it.

• How to implement Clear-Key video encryption in PHP and play it in HTML [closed]

  22 octobre 2018, par Ali Farhoudi

  I want to implement video encryption in php and play encrypted video in HTML5 video. I have read some documents about it :

  • https://en.wikipedia.org/wiki/Encrypted_Media_Extensions
  • https://w3c.github.io/encrypted-media/

  And I know there are alternative tools and services that I can use :

  • https://support.uplynk.com/tut_embedding_the_uplynk_player_3.html
  • https://www.wowza.com/products/capabilities/streaming-content-security
  • https://www.intertrust.com/products/drm-system/livestream/
  • https://bitmovin.com/cenc-widevine-drm/
  • https://www.html5rocks.com/en/tutorials/eme/basics/

  I want to provide like this example :

  • https://demo.castlabs.com/ (play big buck bunny smooth streaming : that can’t be downloaded and the url is one-time usable)

  What steps should I pass ?
  I use PHP (laravel) in server-side.

• avcodec/put_bits : Make bit buffers 64-bit

  18 juillet 2020, par Steinar H. Gunderson

  avcodec/put_bits : Make bit buffers 64-bit
  Change BitBuf into uint64_t on 64-bit x86. This means we need to flush the
  
  buffer less often, which is a significant speed win. All other platforms,
  
  including all 32-bit ones, are unchanged. Output bitstream is the same.
  All API constraints are kept in place, e.g., you still cannot put_bits()
  
  more than 31 bits at a time. This is so that codecs cannot accidentally
  
  become 64-bit-only or similar.
  Benchmarking on transcoding to various formats shows consistently
  
  positive results :
    dnxhd                 25.60 fps ->  26.26 fps ( +2.6%)
  
    dvvideo               24.88 fps ->  25.17 fps ( +1.2%)
  
    ffv1                  14.32 fps ->  14.58 fps ( +1.8%)
  
    huffyuv               58.75 fps ->  63.27 fps ( +7.7%)
  
    jpegls                 6.22 fps ->   6.34 fps ( +1.8%)
  
    magicyuv              57.10 fps ->  63.29 fps (+10.8%)
  
    mjpeg                 48.65 fps ->  49.01 fps ( +0.7%)
  
    mpeg1video            76.41 fps ->  77.01 fps ( +0.8%)
  
    mpeg2video            75.99 fps ->  77.43 fps ( +1.9%)
  
    mpeg4                 80.66 fps ->  81.37 fps ( +0.9%)
  
    prores                12.35 fps ->  12.88 fps ( +4.3%)
  
    prores_ks             16.20 fps ->  16.80 fps ( +3.7%)
  
    rv20                  62.80 fps ->  62.99 fps ( +0.3%)
  
    utvideo               68.41 fps ->  76.32 fps (+11.6%)
  Note that this includes video decoding and all other encoding work,
  
  such as DCTs. If you isolate the actual bit-writing routines, it is
  
  likely to be much more.
  Benchmark details : Transcoding the first 30 seconds of Big Buck Bunny
  
  in 1080p, Haswell 2.1 GHz, GCC 8.3, generally quantizer locked to
  
  5.0. (Exceptions : DNxHD needs fixed bitrate, and JPEG-LS is so slow
  
  that I only took the first 10 seconds, not 30.) All runs were done
  
  ten times and single-threaded, top and bottom two results discarded to
  
  get rid of outliers, arithmetic mean between the remaining six.
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/asvenc.c
  • [DH] libavcodec/put_bits.h