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• mov : Avoid memcmp of uninitialised data

  29 janvier 2017, par Mark Thompson

  mov: Avoid memcmp of uninitialised data
  
  The string codec name need not be as long as the value we are
  comparing it to, so memcmp may make decisions derived from
  uninitialised data that valgrind then complains about (though the
  overall result of the function will always be the same).  Use
  strncmp instead, which will stop at the first zero byte and
  therefore not encounter this issue.
  

  • [DBH] libavformat/mov.c

• dashenc : add option to provide UTC timing source

  29 janvier 2017, par Peter Große

  dashenc: add option to provide UTC timing source
  
  If set, adds a UTCTiming tag in the manifest.
  
  This is part of the recommendations listed in the "Guidelines for
  Implementations: DASH-IF Interoperability Points" [1][2]
  Section 4.7 describes means for the Availability Time Synchronization.
  
  A usable default is "https://time.akamai.com/?iso"
  
  [1] http://dashif.org/guidelines/
  [2] http://dashif.org/wp-content/uploads/2016/12/DASH-IF-IOP-v4.0-clean.pdf
      (current version as of writing)
  
  Signed-off-by: Peter Große <pegro@friiks.de>
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/dashenc.c

• doc : add dash muxer

  29 janvier 2017, par Peter Große

  doc: add dash muxer
  
  Signed-off-by: Peter Große <pegro@friiks.de>
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] doc/muxers.texi

• dashenc : add webm support

  29 janvier 2017, par Peter Große

  dashenc: add webm support
  
  Use webm muxer for VP8, VP9 and Opus codec, mp4 muxer otherwise.
  
  Signed-off-by: Peter Große <pegro@friiks.de>
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/dashenc.c
  • [DBH] libavformat/version.h

• dashenc : use avio_dynbuf instead of packet_write callback

  29 janvier 2017, par Peter Große

  dashenc: use avio_dynbuf instead of packet_write callback
  
  The dash_write function drops data, if no IOContext is initialized.
  
  Since the mp4 muxer is used in "frag_custom" mode, data is only
  written when calling av_write_frame(NULL) explicitly and thus
  there will be no data loss.
  
  To add support for webm as subordinate muxer, which doesn't have
  such a mode, a dynamic buffer is required to provide an always
  initialized IOContext.
  
  Signed-off-by: Peter Große <pegro@friiks.de>
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/dashenc.c