Over the past few days, some of our readers have encountered a known bug with xvid codec profiles. This issue can occur for a number of reasons. We will discuss this below.
vhq This parameter affects each of our macroblock decision algorithms, where The higher the parameter, the smarter the specific solution. On the other hand, the default setting is safe for any encoding. Higher settings still help with PSNR, but noticeably slower. Note that better PSNR does not necessarily mean that the whole picture would be better, but tells you what it is better than the original. Disabling noticeably speeds up encoding; if speed critical than you, because the compromise can be noted.
bvhk This does the same job as vhq, albeit for B-frames. This has little effect on speed and slightly improves quality. (about +0.1 dB PSNR).
max_bframes More consecutive B-frames allowed generally improves Compressibility, although this can also lead to more annoying artifacts. The default value is a good compromise between compressibility and scheduling. Quality, but you can add up to 3 if youFruitful to bitches. You can also drop it down to 1 or 3 if you’re aiming for every perfect score. quality, but in this case you need to make sure that your The bitrate of the laser target is high enough that the encoder does not output it is necessary to increase the quantizer to achieve this.
bf_threshold This adjusts the B-frame sensitivity of the connected encoder, where one is higher a true value causes more B-frames to be used (and vice versa). This type must be used together due to max_bframes; If you are likely to be running out of bandwidth, consider increasing both max_bframes and bf_threshold, you can increase and decrease max_bframes if you wish bf_threshold that the encoder can benefit more from B-frames where really possible need her. A small amount of max_bframes, but also a high value bf_threshold is definitely not a good idea because force any encoder to insert B-frames into sections that are not Take advantage of this to reduce the visualquality. However, if you want compatibility with offline drives, you need to find this only supports old DivX information (i.e. only up to 1 Serial B-frame), this will be your new only option Develop compressibility with B-frames.
Net Optimizes the quantization process to ultimately achieve the optimal tradeoff between PSNR and bitrate, saving bits. These bits are output elsewhere in each video upon return. Improving the overall quality of their quality. You should always leave it found, as its impact on useful quality is enormous. Even if you need speed, really turn it off until you hold vhq and all or more CPU-intensive options are definitely kept to a minimum.
hq_ac Allows the best method for estimating the cost of coefficients, which is sometimes marginal reduces the file size by 0.15-0.19% (which is less for example, a 0.01 dB increase in PSNR), which has little effect on speed. So it really helps to leave it onall the time.
cartoon Designed for better encoding of TV content and does not affect speed since it’s just new music, mode selection heuristics for this type content.
i_quality This parameter affects the accuracy of the movement of this estimate. The higher the me_quality, the more Estimation of some initial displacements is more accurate depending on It is better that the resulting clip retains the original motion.
The default value is appropriate in all cases; Therefore, it is not recommended to run it under control unless you rather looking for speed because everything is saved by one big move An estimate will be issued nearby, which will increase the overall quality. So start with at least a few and even that only lasts address.
chroma_me Improve motion estimation by including chromaticity (color) Help and advice counts for me_quality raw uses only luminosity (greyscale). This slows down encoding by 5-10% but improves visual quality. in particular by somewhat reducing the blocking effect and thus reducingfile size about 1.3%. If speed is important to you, you need to disable the element option first. I’m starting to think that me_quality will get worse.
chroma_opt Should be used to effectively enhance the color of an image. white/black borders instead of improved compression. Now, this can help reduce the “red staircase” effect.
lumi_mask As a workaround, try setting the part of the image that extends beyond the entire image to a lower bitrate than Human eyes can’t see very well, this is what a coder needs to see or spend recorded bits on other important parts of the image. The quality of encoding with this option greatly depends on this. as well as personal preferences and for these types and monitor settings bought to watch (usually it may not look so good when heck if or who TFT monitor).The software to fix your PC is just a click away - download it now.
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