[Mp4-tech] Decoders error concealment methods comparison

[Dmitriy Vatolin]

Dear mp4-tech experts,
  CS MSU Graphics&Media Lab published new comparison - decoders "crash
  test" - testing of decoders error suppression. This feature is actual
  for satellite broadcasting and scratched DVD, so it's actual for
  MPEG-2 and (soon) H.264. In current preliminary tests MPEG-2 decoders
  was tested (we assume they are more prepared for such tests).
  Following codecs was tested (alphabetic list):
  * bitcontrol MPEG-2 Video Decoder
  * DScaler MPEG2 Video Decoder
  * Elecard MPEG-2 Video Decoder
  * ffdshow MPEG-4 Video Decoder (libavcodec)
  * InterVideo Video Decoder
  * Ligos MPEG Video Decoder
  * MainConcept MPEG Video Decoder
  * Pinnacle MPEG-2 Decoder
  Main idea: We prepared damaged stream and decompressed this stream
  with _every_ tested decoder (so all decoders was compared on the
  _same_ damaged stream). Such comparison was done 100 times for every
  error probability to increase results reliability.
  This testing was preliminary. We want to tune our testing methodology
  during this year and will use in for more advanced testing of MPEG-2
  decoders and H.264 decoders.
  Commonly different decoder use pretty different error concealment
  methods. Current results available in PDF (2Mb) here:
  http://www.compression.ru/video/codec_comparison/mpeg-2_2006_en.html
  Any ideas and notes about current and future decoders comparisons are
  welcome.
Yours,
 Dr. Vatolin