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26th December 2018, 14:08 | #1762 | Link |
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Hi, UI seem clean and wonderful to use.
Wondering if there is any way to add function on GUI to precisely limit the max bit rate of an encoding or the option is just not possible on x264 and we are stuck with unconventional way of limiting vbv maxrate+bufsize? Thanks in advance. |
26th December 2018, 15:08 | #1763 | Link | |
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Quote:
Note: You can not have something like a "maximum bitrate" without a properly defined buffering model. And that's exactly what VBV does. So you actually want VBV here See also: https://slhck.info/video/2017/03/01/rate-control.html → section "Constrained Encoding (VBV)"
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26th December 2018, 15:57 | #1764 | Link | ||
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Quote:
Mainly the problem that I'm facing is how to properly define the buffering model for different types of video. Like there is a CBR/2pass encoding to get accurate targeted average bitrate even though the quality will differ in encoding different sources, so I was looking for a similar function that can produce constant result for max bitrate, and perhaps there is something that I did wrong, I can't seem to get that with vbv. Quote:
Thanks again for your time. Last edited by Rocinante; 26th December 2018 at 16:00. |
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26th December 2018, 16:25 | #1765 | Link | |
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Quote:
Just set the target average bitrate as needed (via "--bitrate" option) in order to hit the desired target file size, and let the encoder optimally distribute the available bits. If the encoder creates some bitrate "spikes" or bitrate "drops", then this is the perfectly normal and expected behavior of 2-Pass ABR (or CRF) mode – it happens for a reason! It's because the bits are "moved" to where they are actually needed With VBV enabled, you are effectively forcing the encoder to create a more "uniform" distribution of the available bits. This avoids strong bitrate "spikes" or bitrate "drops", yes. But it also means that the distribution of the available bits is going to deviate from the "optimal" distribution that the encoder would have chosen without the VBV restrictions – sometimes more, sometimes less In other words: VBV can only make the resulting video quality worse. In the best case, VBV won't affect video quality in a noticeable way. But, certainly, VBV restrictions do not improve video quality! VBV is required for two scenarios:
(In both of these scenarios, we choose VBV as the lesser of two evils. And, in both scenarios, the required VBV parameters are obvious from the use case)
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26th December 2018, 17:45 | #1766 | Link | |
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Quote:
I'm in a third case scenarios now that due to a website streaming policy, they request a limit for a "maximum bitrate" value (such as all video max bitrate needs to be below 15Mb/s and below 8Mb/s average bitrate) instead of matching buffering capabilities or like a certain fixed vbv value used in bluray. Last edited by Rocinante; 26th December 2018 at 17:47. |
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26th December 2018, 20:27 | #1767 | Link | |
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Quote:
As said before, there is no such thing as an "instantaneous" bitrate. Instead, a "bitrate" is always an average, computed/measured over a certain time interval. More precisely: Every picture has a certain size, in bits, in the encoded bitstream. And, whenever the decoder is about to start decoding the next picture, we have to ensure that all bits required to decode that picture already are present in the buffer. That's what VBV is all about! And that's also why "--maxrate" (i.e the network bandwidth, i.e. the max. rate at which the buffer can be filled) is not useful without knowing/setting the "--bufsize" (size of the buffer) as well. See also: https://pdfs.semanticscholar.org/830...807507dfed.pdf
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14th January 2019, 13:30 | #1768 | Link | |
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Hello,
Since the x265 3.0+ versions, my simple x264 / 265 launcher gives me an error and I can not run an encode. Here is the error that appears. With versions 2.9, no problem. cordially Quote:
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8th February 2019, 13:35 | #1770 | Link |
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LoRd_MuldeR thank you for amazing GUI! Cant wait new build with native support x265 3.0+
------- I'm sorry. I am stupid. Did not read the documentation before the question. Outdated: Only one question, is it possible to "Custom Encoder Parameters" input make in two lines, or resizeble? If I have a lot of parameters, I can't see them all. Unfortunately it is very inconvenient, I have to copy them into a notepad and back to change Last edited by redbtn; 19th February 2019 at 08:37. |
19th March 2019, 20:32 | #1771 | Link |
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With x265 3.0 I'm seeing this error and can't run an encode.
[2019-03-19][16:18:40] x265 [info]: HEVC encoder version 3.0_Au+14-c7e5878bdd31 [2019-03-19][16:18:40] x265 [info]: build info [Windows][MSVC 1920][64 bit] 10bit [2019-03-19][16:18:40] x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 [2019-03-19][16:18:40] [2019-03-19][16:18:40] FAILED TO DETERMINE VERSION INFO !!! |
27th March 2019, 02:42 | #1772 | Link | ||
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Quote:
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14th April 2019, 08:40 | #1773 | Link |
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Each times I launch the program, I see now a dialog with "Your version of Simple x264 Launcher is more than 6 months old!" and the Discard button is disabled, so the only choice is to click the Check for updates button. After the long check, the answer is always that I have already the latest version. Frustrating !
Could you please release a new version, just to get rid of that irritation dialog, and with the possibility to click the Discard button in the future ? Thanks !
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14th April 2019, 15:56 | #1774 | Link | |
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Quote:
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15th April 2019, 14:15 | #1775 | Link | ||
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From 1st post.
Quote:
Quote:
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16th April 2019, 21:13 | #1776 | Link |
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Hi
The latest program using x264-2935 which released 25-Sep-2018. However newer version is available: x264-r2969 released 12-Mar-2019. Can "x264_x86.exe" file be exchanged in "C:\Program Files (x86)\MuldeR\Simple x264 Launcher v2\toolset\x86" directory to a new one with changing name of course? Also can the "x264_x64.exe" exchanged? Going to work it properly? EDIT: Anyway I did never try it, so are there any encoding speed advance by using 64bit architecture? bye szabi Last edited by szabi; 16th April 2019 at 21:24. |
16th April 2019, 21:23 | #1777 | Link |
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Probably yes. Anyway, a new build of Simple x264/x265 Launcher will probably be soon™.
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16th April 2019, 21:47 | #1779 | Link |
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Yes, quite significant.
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