![]() The GOP can also contain zero or more P-frames (Predictive frames). ![]() So damage or corruption of an I-frame or B-frame would affect the validity of subsequent consecutive B-frames. The GOP can also contain zero or more B-frames (Bi-directional frame).ī-frames consist of information that describes the changes in the picture between this frame and the previous one. damage to one frame would not affect any other frame. If the GOP consists of only I-frames it would emulate an old cinematographic spool of tape, where e.g. (Sorry if I’m asking too much about unnecessary details here, I’m just curious).ī frames seem harder for me to understand than the GOP, tbh.Ī GOP (Group Of Pictuires) always starts with an I-frame (Intra frame).Īn I-frame contains all the information needed to produce the picture for that frame, it does not depend on the contents of any other frame. Is the intention behind the GOP length 15 in the YouTube preset to be half the frame rate - but assuming NTSC? I guess it is not possible to create a preset with a GOP length depending on the current frame rate setting? Why is the other H.264 presets using GOP length 13 - why different from the YouTube preset, and if assuming PAL then would 12 more in line with others than 13? From guides on internet it seems to me that 12 for PAL and 15 for NTSC are kind of a (de facto) standard. My PAL AVCHD camera records with GOP length 12 (according to MediaInfo). YouTube’s recommended upload encoding settings specifies GOP of half the frame rate, but does not indicate what this means for PAL - half the frame rate is 12.5, so either 12 or 13. When I click any of the H.264 presets it changes to 13, but I cannot find that specified in any of the default preset files so where does that value come from? When I click the YouTube preset it changes to 15, and I see this is specified in the preset file. I’m still a bit curious about the GOP length setting… When I start Shotcut it shows the value 125. If “fixed” is enabled, then every GOP will be exactly the size specified. I can’t speak to the other containers (extensions like. But understand that I have only save to MP4. The export presets are extremely useful and I have never had a bad export, ever. Like you, myself, and probably many others don’t understand the settings, yet we want this to work. There are inherent reasons why there are presets in Shotcut, specifically to this issue. I’m taking advice to not mess with them and only use the presets. I don’t fully understand the GOP, but enough to where I’m not going to mess with the settings. Not sure if anyone else could benefit from my settings, nor could I recommend anyone use them. The free advice I got online told me record everything at 35k to 50k bitrates, but I get the same end result from 3k result on one game. Nobody told me how to get the 3k, 12k bitrates, as I had to experiment to find the best setting for what game I’m playing, and what I’m willing to be happy with. ![]() ![]() Source files: VBR 3kbps or 12kbps bitrates, 2 B-framesĬolor Format NV12, YUV Color Space 709, YUV Color Range: Full. Gypsy french jazz: “Jazzy frenchy” – 1.Below are my current settings for Shotcut for editing video games.Sintel – Blender open movie project (Creative Commons Attribution) Audio MKV (24fps, H.264+AC3, 1280×544) – 650MBįull movie includes subtitles: en, fr, de, es, it, nl, pl, pt, ru, vn Images.PNG (1920×1080, 1254 frames, letterbox) – 939MBĭivX versions include subtitles: en, fr Full movie (14 min, 48 sec).The film follows a girl named Sintel who is searching for a baby dragon she befriended. Koro the Llama engages with Oti the pesky penguin in an epic fight over that last tasty berry. It’s winter in Patagonia, food is getting scarce.
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