Search found 5712 matches

by JohnAStebbins
Tue Nov 23, 2021 11:03 pm
Forum: Windows
Topic: Question - Encoding 8-bit Blu-ray using 10-bit encoder
Replies: 2
Views: 883

Re: Question - Encoding 8-bit Blu-ray using 10-bit encoder

The reasons are complicated, but you are not imagining things. Banding is indeed reduced when using a 10 bit encoder with 8 bit sources. Longer answer... In encoded video, there are no "pixels". Instead there are frequency coefficients. Frequency coefficients are a representation of the im...
by JohnAStebbins
Mon Nov 08, 2021 2:49 pm
Forum: General Questions
Topic: Mixed Prog/Telecine standards
Replies: 2
Views: 409

Re: Mixed Prog/Telecine standards

I know of no standards that define the parameters for how interlaced and telecined content may be interleaved. I'm sure production houses have procedures they follow to some extent, but my guess is even these would be soft rules. More generally, changes between interlaced and telecined content most ...
by JohnAStebbins
Wed Nov 03, 2021 2:28 pm
Forum: Windows
Topic: Default (and forced) subtitles in the soure not marked as default in HandBrake
Replies: 11
Views: 879

Re: Default (and forced) subtitles in the soure not marked as default in HandBrake

Nice one, very helpful and constructive. mduell's statement is provocative, and lacks tact, but is also true. There are a number of features that would be nice to have that nobody has the time or inclination to work on. The HandBrake developers are a small team (you can count them on 3 to 5 fingers...
by JohnAStebbins
Tue Nov 02, 2021 3:04 pm
Forum: General Questions
Topic: Anamorphic
Replies: 2
Views: 458

Re: Anamorphic

Anamorphic means that pixels are not square (they are rectangular). Setting anamorphic to none results in square pixels. Using anamorphic pixels, in this example, results in more detail being preserved in your encoded video. But in some use cases, this may not be needed or desirable. For example, if...
by JohnAStebbins
Wed Oct 27, 2021 6:29 pm
Forum: Mac
Topic: High Sierra High CPU usage
Replies: 5
Views: 859

Re: High Sierra High CPU usage

Woodstock wrote: Wed Oct 27, 2021 1:52 am When you select a software encoder (in this case, x264), handbrake will use a lot of CPU.

Using hardware encoding depends on whether or not you have the hardware and the operating system supports it.
... and whether the user has actually selected a hardware encoder in the video encoder settings.
by JohnAStebbins
Tue Oct 26, 2021 9:07 pm
Forum: General Questions
Topic: "Video Pass thru" ?
Replies: 9
Views: 1206

Re: "Video Pass thru" ?

The "hard" problem with video passthru is maintaining A/V sync in scenarios where the streams are damaged (this frequently happens with broadcast captures) or sources that have non-seamless branches (DVD and BD). To maintain sync, HandBrake needs to sometimes drop frames. This is easy with...
by JohnAStebbins
Tue Oct 26, 2021 4:10 pm
Forum: Windows
Topic: general question: settings for merging multiple .MXF-files into one single MP4-file
Replies: 5
Views: 587

Re: general question: settings for merging multiple .MXF-files into one single MP4-file

ffmpeg is probably the tool you want to start with. Google turned up this tip https://www.arj.no/2019/11/03/convertin ... th-ffmpeg/

If you also want to re-compress or convert the video to another codec, then you could post-process with HandBrake.
by JohnAStebbins
Tue Oct 26, 2021 2:18 pm
Forum: Mac
Topic: Homebrew, libdvdcss and M1 macs
Replies: 11
Views: 1952

Re: Homebrew, libdvdcss and M1 macs

... then you should just rip libdvdcss support out of handbrake entirely. Having it in the code and being unwilling to answer simple questions about it is hypocrisy. In order to completely remove support for libdvdcss we would have to patch one of the libraries used by HandBrake. We did not write t...
by JohnAStebbins
Wed Oct 20, 2021 3:20 pm
Forum: General Questions
Topic: [QSV] - VBR Feature Request / QP Max Bitrate Limit
Replies: 8
Views: 964

Re: [QSV] - VBR Feature Request / QP Max Bitrate Limit

I mean, is this a mistake in the analysis or how can this happen? The compression algorithm knows nothing about the bitrate or quality of the original file. In fact, the original file is uncompressed before being passed to the encoder. The encoder sees only raw uncompressed frames. Strongly compres...
by JohnAStebbins
Tue Oct 19, 2021 3:52 pm
Forum: General Questions
Topic: [QSV] - VBR Feature Request / QP Max Bitrate Limit
Replies: 8
Views: 964

Re: [QSV] - VBR Feature Request / QP Max Bitrate Limit

mduell wrote: Tue Oct 19, 2021 2:09 pm OP is using QSV, not x264.
Yes, but I don't believe QSV supports separate vbv settings (I could be wrong). So I offered the information as an alternative to QSV.
by JohnAStebbins
Tue Oct 19, 2021 1:58 pm
Forum: General Questions
Topic: [QSV] - VBR Feature Request / QP Max Bitrate Limit
Replies: 8
Views: 964

Re: [QSV] - VBR Feature Request / QP Max Bitrate Limit

As mduell pointed out, the best way to control bitrate spikes when using a quality metric for encoding is through vbv-maxrate and vbv-bufsize settings. These settings are specifically designed for this purpose. QP (like RF) will not limit bitrate. QP is a quality metric. The encoder will apply whate...
by JohnAStebbins
Mon Oct 18, 2021 10:59 pm
Forum: *nix
Topic: Missing Advanced Settings field with QSV encoders
Replies: 5
Views: 1407

Re: Missing Advanced Settings field with QSV encoders

So only Windows for now? Or it is technicaly possible. It's technically possible. Linux QSV lags because there's not as much demand for it, I have to test it on a machine that isn't my primary development machine, and I'm lazy :mrgreen: It's on my list. But it would be less likely to be forgotten i...
by JohnAStebbins
Mon Oct 18, 2021 3:42 pm
Forum: General Questions
Topic: How best to deinterlace a source that has both progressive and interlaced content?
Replies: 3
Views: 550

Re: How best to deinterlace a source that has both progressive and interlaced content?

Generally, if you don't have a playback device that requires constant framerate, it's best to just leave the framerate set to variable "same as source". When using bob deinterlacing, you won't have to be concerned with matching the output framerate to twice the input framerate. Additionall...
by JohnAStebbins
Sun Oct 17, 2021 4:45 pm
Forum: Mac
Topic: Faint subtitles with HandBrake 1.4.1 on Mac (Intel)
Replies: 5
Views: 1836

Re: Faint subtitles with HandBrake 1.4.1 on Mac (Intel)

FYI, quick test here with a couple DVD samples using HandBrakeCLI 1.4.2 and git master on Linux doesn't show any issue. But I did notice that the log above shows this: [10:53:08] + color profile: 5-5-6 And my test using HandBrakeCLI shows this [10:40:06] + color profile: 6-1-6 Not sure if that would...
by JohnAStebbins
Tue Oct 12, 2021 3:18 pm
Forum: General Questions
Topic: Common Open Source Errors - The Manual
Replies: 3
Views: 671

Re: Common Open Source Errors - The Manual

Mystit wrote: Tue Oct 12, 2021 10:56 am Off into the mists of time, never to be heard of again.
Or you could volunteer some of your time to produce and maintain said PDFs.
by JohnAStebbins
Mon Oct 04, 2021 3:32 pm
Forum: Command Line Interface And Scripting
Topic: Hanbrake CLI newbie
Replies: 3
Views: 2829

Re: Hanbrake CLI newbie

That's a 12 year old post. A lot has changed since then :mrgreen:

Current docs are here :wink:
https://handbrake.fr/docs/en/latest/cli ... rence.html
by JohnAStebbins
Sat Oct 02, 2021 3:04 pm
Forum: *nix
Topic: Crash when transcoding an mkv to x265
Replies: 17
Views: 2446

Re: Crash when transcoding an mkv to x265

knosso2919 wrote: Sat Oct 02, 2021 12:54 pm ... now I'm relising that "--debub=max" might have been a typo.....
Oops. So sorry.
by JohnAStebbins
Sat Oct 02, 2021 3:02 pm
Forum: *nix
Topic: Crash when transcoding an mkv to x265
Replies: 17
Views: 2446

Re: Crash when transcoding an mkv to x265

Modded the x265 source: make -j 4 x265 . Stoped the build after the source download finished. nano ./contrib/x265/x265*/source/common/primitives.cpp changed == with != in the final part regarding ARM. You can automate/simplify this step by dropping a patch file in contrib/x265. A good name for the ...
by JohnAStebbins
Wed Sep 29, 2021 2:25 pm
Forum: Windows
Topic: Wtong Codec_ID - Failure to initialize thread
Replies: 1
Views: 390

Re: Wtong Codec_ID - Failure to initialize thread

SSA != SRT. You selected the wrong option when importing your SRT file.
by JohnAStebbins
Tue Sep 28, 2021 2:23 pm
Forum: *nix
Topic: Ctrl+Q exit
Replies: 2
Views: 851

Re: Ctrl+Q exit

I didn't realize that was an accessibility convention in linux. I'll look into it. Requests and recommendations are welcome, but they really belong in github issues where we can track them.
by JohnAStebbins
Mon Sep 27, 2021 2:08 pm
Forum: *nix
Topic: Crash when transcoding an mkv to x265
Replies: 17
Views: 2446

Re: Crash when transcoding an mkv to x265

Ok unfortunately it does not build with the debug options in the configure file. Is it possible that it is assuming somehow x86? I would show what happens while doing a make but it is too long for the maximum characters here and it exceeds the maximum dimensions of pastebin. I will share a txt file...
by JohnAStebbins
Sat Sep 25, 2021 3:53 pm
Forum: *nix
Topic: Crash when transcoding an mkv to x265
Replies: 17
Views: 2446

Re: Crash when transcoding an mkv to x265

I'm somewhat surprised it can even be coaxed to build for arm. Since none of us has done this on linux, you're going to have to do the heavy lifting yourself in figuring out what's broken. Start by doing a clean build with debug symbols enabled and optimization disabled. E.g. from the top of the Han...
by JohnAStebbins
Fri Sep 24, 2021 7:24 pm
Forum: Windows
Topic: Recent Output change - Seeking possible reasons
Replies: 4
Views: 487

Re: Recent Output change - Seeking possible reasons

Code: Select all

[11:10:21]        + source: 1280 * 720, crop (180/178/0/0): 1280 * 362, scale: 1280 * 362
You appear to have auto-crop enabled and your source must have black bars top and bottom that HandBrake is cropping since they are not "useful image data".
by JohnAStebbins
Wed Aug 18, 2021 2:48 pm
Forum: Windows
Topic: HB 1.4.1, can no longer output 1920x1440 (4:3) video
Replies: 6
Views: 785

Re: HB 1.4.1, can no longer output 1920x1440 (4:3) video

[09:53:28] + source: 1920 * 1440, crop (180/180/0/0): 1920 * 1080, scale: 1920 * 1080 Turn off cropping. HandBrake auto-crops black bars by default. It looks like we have overlooked translation of previous custom preset settings that have auto-crop disabled. So if you have custom presets you create...