Fanrestore - Fan Restoration Forum - Converting, encoding, authoring

Considering a mini-PC for Black Friday

Thu, 06 Nov 2025 22:37:07 +0000

Hey, guys.

What do you think of these two to work on DaVinci Resolve, to encode 1080p and 2160p videos, etc.? I'm not a gamer, so I don't give a crap about that aspect of things.

https://www.amazon.fr/GEEKOM-IT15-Puissa...JMGQ&psc=1

https://www.amazon.fr/GEEKOM-A9-Max-Ordi...D9BX2&th=1

They both are at the same price, 999€, at the moment, although I found the IT15 at 939€ and the A9 Max at 899€ elsewhere. The IT15 seems to be the best choice, but I'm waiting for the actual Black Friday to see if the prices go down. I guess the A9 Max would do just fine for my expectations, plus I like having extra USB-A connections for external HDDs. So which one would be the better choice? Or maybe you guys know an even better alternate choice? Geekom apparently has good reputation regarding mini-PCs with robust metal casing, unlike the low-cost plastic ones used by other brands.

Workflow for regrading UHD?

Sun, 01 Dec 2024 08:00:07 +0000

Hi everyone,

I have a UHD film that might benefit from a quick regrade.
I normally use Resolve for corrections or regrades, but the free version seems to have issues with .265 video which might make it hard to use proxies. I have a LUT that I'd start off with.

Has anyone had experience regrading .265 video?

Thanks!

Bitrate-limitations when burning UHD on BD-R?

Fri, 25 Oct 2024 14:51:05 +0000

Hey guys,

I ran into a weird issue lately: The short version is I tried to remux a retail-UHD and burn it back on a BD-R DL 50 GB which all worked fine, but when I'm trying to play it on my Panasonic UBP-824 or the PS 5, it starts to stutter as soon as the bitrate exceeds 60 MBit/s.

Now the more detailed version of what I did:
First I authored a normal 1080p-Blu-ray with menu etc. using Encore CS 6. For the video I just used a proxy-encode in 1080p, just to get it integrated into the menu-structure. Then I replaced it as described here. Then I updated the BD-profile to level 3.00 with BDedit and burned it using ImgBurn (UDF 2.5 and whatever settings it used automatically after it recognized the BD-structure). The player recognizes it as UHD and the menu etc. are all ok. The film starts, but soon as the bitrate exceeds 60 MBit/s it starts to stutter.

I also added a Dolby Vision-layer from a Web-DL (the original disc only has HDR10), but that's not the issue - I also tried to burn it without the Dolby Vision-layer and the results were the same. What might also be important to know is that I also completely swapped the audio-tracks. The original disc had 10 audio-tracks with (according to BD info) a total bitrate of 6879 kBit/s, mine has 8 DTS-HD MA-tracks with a total of 12079 kBit/s.

Are there any limitations with self-burned BD-R discs or is there something in the burn-settings or the BD-structure that needs to be changed, so it also plays fine on the UHD-player? When trying to play the burned disc with VLC it also works fine, so it's not an issue with the disc itself. The Blu-ray white-paper mentions something about 72 MBit/s or 92 MBit/s for 50 GB-discs and 92, 123 or 144 MBit/s for 66 and 100 GB-discs. But somehow I can't quite figure it out whether this is my bottleneck or what else I am doing wrong.

What worries me is that I can't find any other reports about issues like this. When someone asks about burning UHD-discs, it's just recommended to use common 50 or 25 GB-discs since the BD-R XL-discs won't play on most standalone-players. But nothing about bitrate-limitations etc.

Anyone here knowing what might help to get this solved or is it just impossible what I'm trying to do here?
Thanks in advance for your help!

help with changing audio to match framerate

Mon, 07 Oct 2024 07:37:09 +0000

I'm trying to sync the Atmos track from the German Pitch Black UHD to the Arrow UHD, which has a higher bitrate, but the Arrow is 24 fps while the German is 23.976. I've been using various methods to change the framerate of the audio like eac3to and ffmpeg, but none of them seem to work, any way I can easily change the framerate or slow down an audio track to the right framerate?

Is it possible to edit a existing Blu-Ray disc?

Mon, 30 Sep 2024 04:25:24 +0000

I'm planning to replace the video of the Pacific Rim UHD with my remux with Dolby Vision, is it possible to replace the video and edit the BD structure in the already existing disc without needing another disc to burn to?

How to convert Dolby Vision Profile 8 to 7 to make it UHD BD compliant?

Fri, 13 Sep 2024 02:13:09 +0000

I have a mkv with Dolby Vision Profile 8 I want to burn onto a UHD Blu Ray to replace to HDR only video stream, and Dolby Vision on UHD discs are usually Profile 7, how do I do so since I'm new to making custom Blu ray folders and discs?

Best Topaz Video Enhance settings ?

Sun, 21 Apr 2024 17:47:36 +0000

Anyone can tell me the best Topaz video enhance settings for VHS record rips like this movie here on youtube

I want to upscale that movie to a good watchable 1080p or 4K.

Please give me settings i can use to restore that movie in 1080p or 4k.

Tonemapping from HDR to SDR with Dolby Vision 100nit trim pass

Thu, 21 Mar 2024 21:06:37 +0000

I found a pretty cool tool recently when looking foe some HDR analysis stuff called DoVi_Scripts. Not sure how well known this is but it can do some cool stuff with DV so I thought I’d share. (also the YT vid the github links to for this looks to be outdated)

I’m by no means an expert, but, from my understanding, Dolby Vision has these things called trim passes, which basically are data on how to tonemap the image for certain brightness values. One of the passes is for 100nits, which is effectively SDR, so this is data on how to tonemap the HDR image to SDR.

Motivations are hopefully obvious: high quality SDR versions of 4KBDs, especially interesting for titles which the 4KBD differs from the 2KBD in terms of, say, the transfer, or even something more significant like Gemini Man (2019)’s 60fps presentation. The tonemap also can retain 4K 10bit which may be a plus for projects and such.

The main limitation is, of course, that this only applies to Dolby Vision, and that the DV titles need to have the 100nit trim pass. Basically all the titles I’ve tested so far (8) do have it, but I did run into the curious example of The Last of Us (2023) only having it for episode 1, with the other episodes being absent it, so its possible to not be there.

Anyway, enough rambling, how can it be done?

DoVi_Scripts is basically a collection of tools focused around processing and analysing DV and HDR videos, looks to be mostly focused on DV hybrid stuff.

But it can do some other stuff; Under video encoding settings [8 MIXED: Audio/Remover/Encoder/Playlist/Sample → 2 VIDEO Encoding → 4 PRORES DV to SDR], there is a DV to SDR 100nit trim pass delivery option, which is what we’re looking for.

However, a couple of notes first. It doesn’t seem to work properly in v2.0.3 (current), instead just falling back to the standard tonemapping option. v2.0.2 works fine however. Next, you’ll need to download Dolby’s DV tools; you need to sign up but its free so not too much of an issue. DoVi_Scripts is actually using an official Dolby tool for this conversion which is interesting to see.

An optional step is checking to see if your file has a 100nit trim pass. In DoVi_Scripts, option [2 DoVi Fix/Edit/Extract/Verify/Info → 2 RPU Extractor/Reader] you can get a summary of the DV metadata, and youre looking for the line “L2 trims”, and see if 100nits is there. Alternatively just throw your file into the DV to SDR converter and it’ll tell you if there isn’t one, but it does some pre-processing so checking first saves a bit of time.

Finally, note that the conversion results in a ProRes output file. Which is huge. In the 100s of Mbps range, which adds up very quickly. Personally, I have processed everything so far in chunks then compressing each one with x265 to keep the storage usage manageable for me. So far this doesn’t seem to result in any issues.

Ok! so I have tested so far with Gemini Man (2019), and Belle (2021) to see how the results stack up. Gemini Man is 60fps so id like a SDR version, and Belle I remember having some brightness issues with tonemap testing I did a while ago.

As well as comparing against the SDR Blu-ray, I’ve compared against Handbrake’s colourspace filter, and DoVi_Script’s own standard tonemapping (uses DoViBaker/libplacebo). I know there are other (potentially better) methods out there, but I’m not overly familiar, plus all these options are around the same effort level, there’s no tweaking.

Gemini Man:

Belle:

(there are more comparisons on my Gdrive, all of which are full res PNGs)

So, overall, its clear handbrake notably undershoots brightness in all of my testing. Belle seems to be graded not super bright so perhaps that’s not entirely unexpected but regardless its not what I would consider to be a good result.

DoVi_Scripts own tonemapping (again, DoViBaker/libplacebo under the hood, which tbh I know nothing about) fairs a bit better. Belle is once again undershot, but Gemini Man is a lot closer and even overshoots in some shots.

The 100nit trim pass basically nails the required brightness. It looks to be slightly more off with Gemini Man than Belle, but its close enough that most of the time even side-by-side its a bit hard to tell.

There are some slight differences in colour temp and contrast (again, more notably in Gemini Man), but small. Super bright elements in Gemini Man (fire/explosions) look to be a bit oversaturated at times where the SDR grade blows them out to white, but again overall I’m quite happy with the results.

Converting to HVEC

Mon, 12 Feb 2024 09:58:57 +0000

Hi all,

I'm looking for a program to convert to a .hevc format - I've got some Web-DL's with HDR10+ in mkv format tht I'm looking to extract the metadata from to sync with the relevant UHD's. The hdr10plus program needs the file in HEVC but I can not seem to find a converter with an HEVC output. If anyone knows one (ideally free!) please let me know.

Thanks

4.1 PCM mapping tsmuxer

Wed, 06 Sep 2023 04:12:28 +0000

I’m attempting to mux a 4.1 pcm file, but my blu-ray player (sony x800mkII) is incorrectly mapping my 4.1 file to 5.0.

Media info shows the correct channel mapping, and when I add the file to tsmuxer, it shows 4.1. Not sure where I’m going wrong, and would really appreciate some guidance!

Would my best bet be to duplicate the surround back channel to SL&SR and drop about 3db?

I unfortunately do not have access to DTS-HD master suite, and would like to keep the audio lossless.

Thanks for any help!

Variable Framerate & 2:3 Pulldown

Tue, 22 Aug 2023 21:23:18 +0000

Hi all,

Looking to upscale some animation DVD's I have. Got them ripped and was ready to deinterlace until I noticed in Mediainfo that they're Progressive, with a variable framerate (24.58fps apparently) and 2:3 pulldown.

I tried upscaling the file as is but got some nasty combing effects. Just wondering what the best way would be to encode them as true progressive files ready for upscaling?

Thanks

Promising SDR <--> HDR back/forward convertor, check it out

Tue, 15 Aug 2023 08:18:59 +0000

This can do SDR <-> HDR back/forward conversion, realtime preview, edit metadata, MaxCLL, MaxFALL, etc.

Free trial w/ all features, limited to 1 minute export max
https://www.acrovid.com/neofootage_ai.htm

Need to add grain to a movie project, seeking ideas/options/tips please

Tue, 18 Jul 2023 19:56:47 +0000

I had to restore an older movie that was previously wrecked w/ multiple layered bad interlacing choices, tons of jitter, ghosting, terrible resampling, on and on. What's left is a very stable movie, but it looks too sterile, clinical, waxy, lifeless. It was definitely shot on film (35mm?) and I'm seeking to add a wee tiny bit of grain back into it. Any grain that was there is long gone. I have several grain plates I could overlay in Premiere (or Resolve), but I'm open to ideas. The grain technically *should change over time in the running length, and increase in darker scenes and decrease in lighter scenes, right? It should be dynamic. Can you guys please give me some pointers/tips as this will be my 1st time attempting this. I *could go w/ a grain rendering program, but that route seems very artificial and I'd rather overlay some real grain. Please share some ideas, I appreciate your time and help!

Converting HDR to SDR

Sun, 02 Jul 2023 14:10:04 +0000

What would be the best and/or easiest way to go about this? I want to work on The Phantom Menace, using the 4K UHD as the primary source. Thanks.

Encoding audio with LFE2?

Fri, 02 Jun 2023 00:16:19 +0000

So this is totally something that has sort of fascinated me for a bit and I was wondering if anyone has ever managed to get working?

So apparently, certain audio codecs have the compatibility of including two separate LFE channels.

What's more, there's clearly documentation of it being coded into FFMPEG as part of the added support for 22.2 mixes—as insane as that sounds.

Now whilst I understand that there is the whole argument about whether or not this is something that'd even be worth the effort given low frequencies aren't particularly "directional" so-to-speak, I still at least like the prospect of its existence in a codec since it technically opens the door to properly supporting stuff like Dolby "Baby Boom" stuff which had dual LFEs.

Obviously, the opportunity of preserving something like that is practically nonexistent here, but I'm more curious about whether or not it can even work more than anything else at this point.

So I was spending a fair chunk of my afternoon testing different channel layout combos in FFMPEG to see if I can get it working, but for whatever reason, I can't seem to get it working whatsoever.

Maybe I'm doing something wrong with my code, but for some reason every time I try introducing the LFE2 in AAC, I get an error saying "Channel 3 cannot be referenced twice", so I assume the software's interpreting LFE2 as LFE still or something? I even tried trying to do a test creation of a 22.2 track—since it's the only standard channel layout that includes this mysterious channel—and not even that works.

I don't know. I don't suppose anyone else is willing to give this a shot on their end for experimentality's sake?