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Paul_Anderegg's avatar
Paul_Anderegg
New Contributor
4 years ago

New h264 channels 720p only?!?!

Got the notice last month that Cox San Diego would be upgrading to the year 2003, and changing from mpeg2 to h264 AVC encoding.  I was very excited, as the mpeg2 quality at 7Mbps or so I get on most channels is horrible...if you have ever wondered what a waterfall made of Legos looks like, you could just watch a nature documentary on NatGeo.

Fast forward to today, I wanted to check to see which channels might have already been converted to h264, and checked my recorded Windows Media Center files of non local cable channels.  Yup, seems like all the non local channels have been changed to h264...but that's not all...every singe one has now been reduced from 1080 to 720.

Is this some sort of sick joke?  We get a codec update to the year 2003, and simultaneously get a resolution downgrade to less than full high definition.  Is this a temporary thing, or can someone from another region advise if this is a transitional resolution, and that 1080 will return once they get their s**t together? 😞

Paul

  • Allan's avatar
    Allan
    Moderator
    4 years ago
    @Paul Anderegg, We can look into this concern for you. Are you getting this issue with only recordings or with live programming as well? Also, where are you seeing it listed as being only in 720? -Allan, Cox Support Forums Moderator.
    • Paul_Anderegg's avatar
      Paul_Anderegg
      New Contributor
      4 years ago

      I use a Windows Media Center PC, equipped with a Cox Cablecard and tuner.  The tuner records the raw transport stream.  Using VLC, I can play back the recorded files, and display the video codec type, bitrate, audio format type, and even closed captioning.  The old 1080 show as mpeg2 A52, around 9Mbps, that would be with Dolby Digital audio.  The newer converted channels show as h264 AVC A52B 720p59.94, around 5Mbps, that would be with Dolby Digital Plus, but my AVR only shows that old Dolby Digital legacy is being encampsulated.  The quality of the new "downrezzed" channels is made worse by what appears to be an attempt to add sharpenning to compensate for the resolution decrease.  Because the pixels are now magnified, and sharpenning is being applied to an already low bitrate and macroblock source, it results in very noisy images, as the little macroblock compression squares, now bigger in 720p, are getting sharpenned as well.  The resulting quality is so bad I've taken to downloading all the network apps onto my Android TV and simply using my PC DVR as a form of reminder of episodes I need to watch online.  If Cox is going to stick with 720p (ugh), at a minimum, please have the technicians in charge of the encoders reevaluate the detail enhancement being applied...I think your typical Cox consumer at home is at minimum smart enough to turn up the sharpness on their TV if the need to...and most TV's on stock settings are already oversharpenned as it is.  My local channels, all still in 720/1080 mpeg2, look much much better than the new h264 channels...even KPBS, which itself converts 1080 network content to local 720p60, looks soo much better.

      • Paul_Anderegg's avatar
        Paul_Anderegg
        New Contributor
        4 years ago

        BTW, I work at a local San Diego TV station (network affiliate) carried on Cox cable.