Search found 181 matches

by jpsdr
Fri Oct 25, 2019 5:52 am
Forum: DGDecNV
Topic: Indexing Demuxed video
Replies: 20
Views: 1635

Re: Indexing Demuxed video

If i understand properly. You have an m2ts file, you demux audio and video and have, for exemple, an .264 video file, and .ac3 audio file. You want then to work with the .264 video file instead, and not the .m2ts file anymore. Am i correct ? If i am, correct, one possibility, but i don't know if it'...
by jpsdr
Sun Mar 18, 2018 2:45 pm
Forum: DGDecNV
Topic: How to convert white points
Replies: 6
Views: 951

Re: HDR -> SDR tonemapping for DGDecodeNV

I have no idea, i want to experiment several things, when you see fig.37 of BT.2390, it seems that white point scaling is a possibilty, so that's why i'm trying to figure out what is the formula. BT.709 define a fixed white point, in HDR, there is a white point information, so maybe it can be useful...
by jpsdr
Sun Mar 18, 2018 11:42 am
Forum: DGDecNV
Topic: How to convert white points
Replies: 6
Views: 951

How to convert white points

Very nice result (and "fun" movie also). I've been looking out for formula of how tweaking white point : converting (R0,G0,B0) with white point at (x0,y0) to (R1,G1,B1) with a white point at (x1,y1), but without success for now... :? As you're talking about it, do you know where i can find it, or is...
by jpsdr
Tue Mar 13, 2018 3:58 am
Forum: DGDecNV
Topic: Feature Requests
Replies: 366
Views: 103072

Re: Feature Requests

i would like a 10/12/16 bit HDR->SDR... :D More seriously, i also agree with gonca on the part "you choose" if finaly one feature request is not more asked than another. My request was more for curiosity to see what it gives, than a real immediate needs. Also, i'm sorry, it seems i've badly asked my...
by jpsdr
Mon Mar 12, 2018 3:03 pm
Forum: DGDecNV
Topic: Feature Requests
Replies: 366
Views: 103072

Re: Feature Requests

HDR -> SDR... :D You're talking about a specific tone maping, does it mean you've made tests with several and thought this one is "the best" ? Are you interested (even if you're not doing this feature right now) in an 50GB HDR movie, and in a 25GB file of the exact same movie in SDR ? It seems also ...
by jpsdr
Mon Mar 12, 2018 4:15 am
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 561
Views: 74456

Re: HDR -> SDR tonemapping for DGDecodeNV

Ok, got a very interesting answer and information about HDR. I had no idea it was in a such mess state... :wow:
Seeing this, i gave up the idea of trying to do an HDR to SDR convertion.
by jpsdr
Sun Mar 11, 2018 5:20 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 561
Views: 74456

Re: HDR -> SDR tonemapping for DGDecodeNV

Thanks. Very interesting result, this experiment confirm my thoughts, that the display device needs these metadata to properly display HDR content. I'm still having trouble with what kolak said that device use high complex method algorith just to display HDR. And for now, i can't get rid of the idea...
by jpsdr
Sun Mar 11, 2018 3:11 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 561
Views: 74456

Re: HDR -> SDR tonemapping for DGDecodeNV

Otherwise, drives appart, any comment on my post @gonca Is it possible for you to do a little experiment for me ? In the first page of this thread, it seems that you're doing your own H265 HDR encode. If possible, could you trim 20s of a video, and make 2 encodes of it : - With the proper mastering ...
by jpsdr
Sun Mar 11, 2018 6:49 am
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 561
Views: 74456

Re: HDR -> SDR tonemapping for DGDecodeNV

Usualy, i use AnyDVD for all my BR. But, for this title, i've encounter an issue for the 1rst time, AnyDVD wanted to connect to its database. As my PC video is totaly offline, i had to found something else. Finaly, makemkv did the job. I didn't create an mkv, but just save the disc. Didn't realize t...
by jpsdr
Sun Mar 11, 2018 4:02 am
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 561
Views: 74456

Re: HDR -> SDR tonemapping for DGDecodeNV

Going back to HDR... ;) I've posted on another forum a long post, about my still struggling issues and thoughts i have about HDR. If you have time to read it, and eventually share your thoughts also here. It's of course absolutely not related to the fact that yesterday i got in my hand my first UHD ...