![]() My largest file is 11.6 GB, averaging between 5 & 8 GB, with my smallest full Blu Ray movie 2.75 GB. Expect 20-25% larger file sizes with the 17 setting, though.īTW, the file sizes are pretty tiny. Since I only have a tweaked 46" TV, and you have a 65-incher, you may very well need to go down (up in quality) to the 17 setting. This will give you constant quality on every one of your Blu Rays, with shorter (85-95 minute comedies) being lesser amount of data. D) Deblock: Off E) Grayscale: uncheckedģ) Video tab: A) Video codec: H.264 B) Framerate: Same as source, with Variable Framerate C) Quality: Constant quality 18. Wasting a tiny bit of HDD space on a couple of DVDs of extremely old videos is 1,000s of times better than making all of your new stuff look comparatively bad. Leave all four settings below Custom set to 0.Ģ) Filters tab: A) Detelecine: Default B) Decomb: Decomb Default setting C) Denoise: hqdn3d Strong setting Leave completely off. Here are the settings that I use for my Blu Ray discs, and on my tweaked 46-inch screen, I can see no difference between the uncompressed disc, and these settings:ġ) Picture tab: Change only 'Cropping' to the Custom setting. If you are used to watching movies that actually look good for the entire movie, you'll want to go with the way that Jag and I do it, with the constant quality settings. And it is the way to go, if you don't mind your Blu Ray movies looking more or less identical to uncompressed DVDs. When I first decided to try this whole 'compress my optical disks' thing, all signs from different Google searches led me to believe that using certain bitrates was the way to go. Two pass + target bitrate does not allocate bitrate better, it's actually worse. This is the best way to encode with x264 (and x265). The encoder will decide how much and where to put the bitrate to maintain that same perceived quality across the entire video. 23 is good enough for grain-free or video that have a lot of still images, but for busier sources you may want to use 22 or 21.Īnd that's it, you can just encode over and over always using the same settings. Default for x264 is 23, but anything between 18-23 is reasonable for HD material, 18 being the highest quality but probably not much smaller than the original. After you've picked something that you're comfortable waiting for (don't bother with placebo preset.), pick a CRF that satisfies your quality requirements. ![]() First pick a speed preset you are comfortable with in terms of encoding time (the slower the speed, the better the quality/space ratio will be). SD video is magnified more (making some of the flaws more visible) than HD material when you watch them full screen.You really shouldn't do that, you should just choose a speed preset and a CRF setting. Also you can typically get away with slightly higher crf values with HD material. These crf settings are with x264 encoding and the slow preset with SD material. Of course, the other settings make a difference too. At 30 it becomes very obvious the video is degraded. At the default 23 videos are noticeably worse but are watchable. At 18 videos look about the same as the source at normal playback speed. At 12 quality is about the same as the source even if look at still frames and zoom in. Think of the CRF values as the amount of detail you are going to throw away. High CRF values give small files and low quality. Low CRF values give high quality and large files. You should encode a few short test videos at different CRF settings to get a feel for what value you find suitable. You want to use quality based encoding when you want to be assured of the quality of the final result and don't care about the exact file size. The encoder just encodes every frame at the quality you specify (that's a highly simplified explanation). With quality based encoding (CRF in x264 and x265, called RF in Handbrake) you know what the quality of the video will be but you don't know what the final size will be. When you have a size requirement (eg, 700 MB to fit on a CD) you want to use this type of encoding to get the best quality at that size. When you use bitrate based encoding you know what the final file size will be (size = bitrate * running_time) but you don't really know what the quality will be. A high motion action movie will require a much higher bitrate. ![]() For example, a still shot of a bowl of fruit will require very little bitrate. Different videos require different bitrates to achieve the same quality. Now I see in most articles that these codecs specify the Quality factor, an integer value between 18-25, but then the file size can vary a lot between episodes. Back in the day I used to specify the exact file size I wanted and the bitrate was calculated accordingly.
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