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13th August 2020, 23:05 | #29861 | Link | |
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Yeah. I'll do that. The NVENCC documentation does say the "copy" option is "experimental". Interestingly it doesn't say that about --dhdr10-info with the JSON file. You mentioned that x265 looks ok without the metadata. Have you tried an X265 encode using the JSON file? Last edited by jdobbs; 13th August 2020 at 23:53. |
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14th August 2020, 07:33 | #29862 | Link | ||
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14th August 2020, 21:47 | #29863 | Link | |
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Thanks. I'll do a couple encodes with each encoder and then look at the SEI extension data in the HEVC files to see what differences I can find. I think if I can get past that one, I'm ready for a new release (a real one rather than test version). Last edited by jdobbs; 14th August 2020 at 21:52. |
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15th August 2020, 03:21 | #29864 | Link |
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This is a capability question. As you know, I've created BDs with 1080p H.264 videos, with menus. Can 1080p HEVC videos be used in the same way to create UHD formatted BDs with menus? The video is not to be upscale recoded to 4K, but left as 1080p.
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15th August 2020, 14:24 | #29865 | Link | |
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I will include a hidden switch that would allow 720p and SD to be encoded to HEVC as well. That wouldn't be inline with the BD specification -- but I think most if not all UHD players will handle it (mine does). It would make it nice for creating disc backups of things like SD series. It could give the better quality of HEVC at low bitrates when you put a large number of episodes on a single disc. Last edited by jdobbs; 15th August 2020 at 14:41. |
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16th August 2020, 14:13 | #29867 | Link |
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Well... a new glitch thrown into the mix. The way I'd tested this previously was by muxing with the old version of TSMUXER and then correcting the stream from within BD-RB. Slow as molasses.
I had assumed that the new UHD capable version of TSMUXER would mux a 1080p source correctly -- easy peasy. Well, I've done two attempts so far today (both using NVENCC) and TSMUXER has failed to mux them. No error message, no warning, no failure indicator. It just stops. Honestly this whole thing is getting tiresome. I've had to write code for so many "exceptions" in the helper apps that BD-RB has more code dedicated to bypassing mistakes or implementing workarounds than it has actually doing its job. I'm trying an encode using X265 now to see if it fares any better. |
16th August 2020, 14:28 | #29868 | Link | ||
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16th August 2020, 21:14 | #29869 | Link | |
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16th August 2020, 22:20 | #29870 | Link | |
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I went back in and made changes so the parameter was removed only for HDR10+ sources. But given the other reported issues with NVENCC and HDR10+, I may have to just remove HDR10+ support completely for NVENCC until it is fixed anyway. |
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17th August 2020, 21:30 | #29874 | Link | |
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1. In the X265 encoded HEVC file there are two SEI prefixes added: One SEI that contains the content light level One SEI that contains the display mastering information 2. In the NVENCC there is only one SEI prefix that contains: Content light level, followed by display mastering information. 3. In the original (from the authored disc) there are also two SEI prefixes present: One SEI that contains the content light level One SEI that contains the display mastering information 4. It also appears that both X265 and the original add the two SEIs to every IDR frame (even if they don't change) -- while NVENCC doesn't (I assume it only changes it at what it thinks are scene changes... but I'm not sure). Since both the original and X265 streams seem to be working... I suspect that the problem is centered around the attempt to combine both types of information into a single SEI. I'm nowhere near an expert on how these SEIs should be implemented -- but this information might be helpful to add to your bug report. Last edited by jdobbs; 17th August 2020 at 21:49. |
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18th August 2020, 08:25 | #29876 | Link | |
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For one show, a quick glance showed 250 frames from one IDR to the next. Another show wasn't as bad, but still normally more than 50. To be UHD disc compliant, what should the maximum be? |
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18th August 2020, 13:38 | #29877 | Link | |
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Last edited by jdobbs; 18th August 2020 at 13:52. |
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19th August 2020, 18:34 | #29878 | Link |
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jdobbs: do you have plans to change the "browse for folder" interfaces (behind the "Browse" buttons in the main interface) so they look like the one for "import file" ?
I'd love to sort the folders by age when browsing |
20th August 2020, 20:03 | #29880 | Link | |
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I could probably write code to make this fix myself, but I'd hesitated since the last time I did that a fix was made a couple days later. Another reason for hesitating is that it will add time (since I'd have to scan and rewrite the entire HEVC file after the encode is done). |
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