I recently started building a movie/show collection again on my home NAS.

I know that generally H.265 files can be 25-50% less bitrate than H.264 and be the same or better quality. But what’s the golden zone for both types? 10 Mbps for a 1080p H.264 movie? And would it be like 5 Mbps for H.265 1080p to be on par with H.264? What about 4K?

For file size: would it be 25GB for a 2 hour 1080p movie to be near or at original Blu-Ray/digital quality?

  • user3872465@alien.topBEnglish
    1·
    10 months ago

    Why not go with a constant quality setting in the encoder instead of bitrate and filesize limitations?.

    Thats what I do I feel CQ of 18 is indistiguishable from the original.

    Bonus TIP when transcoding for static Use like storing and filesize reduction. always use a CPU never a GPU if you are after smallest filesize.

  • IMI4tth3w@alien.topBEnglish
    0·
    10 months ago

    Encoding is an art. There is no perfect way to do it. For me, I just prefer remuxes because of that. Web DL should also be very similar for other media that doesn’t have physical options to remux from.

    • jack3moto@alien.topBEnglish
      1·
      10 months ago

      As someone very new to this, are WEB DL the second tier below remux? I see a lot of WEB DL and always hesitant because most movies/shows don’t look as good streaming than a high quality download. I assumed that web DL would be just the same thing as what Netflix or any streaming service provides? But maybe I’m not factoring in them throttling the bit rate to my source?

  • ThickSourGod@alien.topBEnglish
    0·
    10 months ago

    I know that this is a non-answer, but the best thing to do is reencode a few files at multiple bitrates and see where the line is for you.

    Try to get a few dark scenes, since that’s where compression artifacts tent to be most noticeable.

    • Swallagoon@alien.topBEnglish
      1·
      10 months ago

      Also you’ll need to increase bitrate or adjust parameters depending on how much film grain there is. 70s Italian movies are some of the worst for that, lovely crisp and gritty grain but it gets absolutely obliterated when compressed incorrectly.

  • vaaoid95@alien.topBEnglish
    0·
    10 months ago

    I was wondering the same thing recently because my nvidia captures videos took like 1 TB of space on my main PC. I wanted to compress them by switching to H265. In FFMPEG there’s no simple option like “loseless compression”, you always have to enter manually the bitrate or quality. Rendering a bunch of videos with different bitrates and trying to compare them to see if there’s a significant differene is a really long and annoying process. I gave up and just burnt everything to bluray instead.