Search found 5096 matches

by JohnAStebbins
Thu Apr 12, 2018 5:10 pm
Forum: General
Topic: AV1
Replies: 6
Views: 147

Re: AV1

For those interested in the old VP9 saga: https://forum.handbrake.fr/viewtopic.php?f=26&t=27343&hilit=month That thread explains why I am conservative about my estimates for an AV1 HandBrake roadmap. Starting in June 2013, I did regular benchmarks as new release came out and posted my results to the...
by JohnAStebbins
Thu Apr 12, 2018 4:40 pm
Forum: General
Topic: AV1
Replies: 6
Views: 147

Re: AV1

I guess if you have tons of CPUs and are serving up billions of Taylor Swift videos it might make sense to save 30%. When VP9 was initially pushed out the door, it was also extremely slow (but still faster than current AV1 by about 12x). It took a bit over 2 years for them to bring VP9 encode speed...
by JohnAStebbins
Thu Apr 12, 2018 3:33 pm
Forum: General
Topic: AV1
Replies: 6
Views: 147

Re: AV1

Yes, we had a somewhat lively discussion in the AV1 issue thread on github yesterday https://github.com/HandBrake/HandBrake/issues/457 TL;DR, AV1 is about 30% better than x264 in quality vs. file size metrics. And it's about 6000x slower. I.e. you can make your files 30% smaller if you are willing t...
by JohnAStebbins
Wed Apr 11, 2018 9:23 pm
Forum: *nix
Topic: Enable Intel QSV in version 1.1.0
Replies: 3
Views: 87

Re: Enable Intel QSV in version 1.1.0

Ubuntu binary releases are not built with QSV support. In theory, HandBrake on *nix can be built with QSV support enabled. But I have never done this myself.

Given the number of support requests/issues we get for the windows builds with QSV, I'm not in any hurry to enable QSV in Ubuntu builds.
by JohnAStebbins
Wed Apr 11, 2018 4:10 pm
Forum: Windows
Topic: Star Trek TOS Trivia Popup
Replies: 1
Views: 79

Re: Star Trek TOS Trivia Popup

Yep. Such things are often encoded as "subtitles". Since they are infrequent as compared to the normal subtitles, they can trip the algorithm HandBrake uses to pick "foreign audio" subtitles.

Might be worth adding a note about this to our documentation regarding foreign audio subtitle scan.
by JohnAStebbins
Tue Apr 03, 2018 8:37 pm
Forum: Windows
Topic: Much higher than normal video bitrate with Disney blu-ray
Replies: 7
Views: 237

Re: Much higher than normal video bitrate with Disney blu-ray

Blueray authors have no incentive to use a minimal bitrate, In fact, they would be providing a better product if they fill the disc with the highest bitrate that will fit on disc. But it's generally easier for them to use a high but fixed bitrate that works for pretty much all discs without a lot of...
by JohnAStebbins
Mon Apr 02, 2018 6:39 pm
Forum: Mac
Topic: What SRT Encoding Should I Use?
Replies: 2
Views: 176

Re: What SRT Encoding Should I Use?

There isn't any 100% sure way to detect character encodings. But there's a python tool called chardet that may help.
I'm no OSX expert, but on linux it can be installed with:

Code: Select all

pip install chardet
by JohnAStebbins
Thu Mar 15, 2018 9:28 pm
Forum: Mac
Topic: Multiple Subtitle tracks that automatically play with a selected audio track
Replies: 2
Views: 116

Re: Multiple Subtitle tracks that automatically play with a selected audio track

English subtitles play automatically when the english audio track is selected and that the Spanish subtitle track plays automatically when the Spanish audio track is selected This isn't possible. There is no mechanism in any of the container formats for associating audio and subtitle tracks in this...
by JohnAStebbins
Mon Mar 12, 2018 8:26 pm
Forum: Mac
Topic: First line of subtitle file not being 'burned in'
Replies: 16
Views: 668

Re: First line of subtitle file not being 'burned in'

We should really do a quick read of the initial characters of the file and auto-select the charset if it can be identified by byte order marks. Yet another thing to add to my todo list.
by JohnAStebbins
Mon Mar 12, 2018 8:19 pm
Forum: Windows
Topic: How to use Handbrake to cut videos without re-encode
Replies: 3
Views: 343

Re: How to use Handbrake to cut videos without re-encode

You can't keep the original quality when re-encoding. There will always be some loss of quality. You can get very close to the original quality, but depending on the source the file may be smaller or *larger*. If the source is using a codec that is less efficient that the encoder you re-encode with ...
by JohnAStebbins
Mon Mar 12, 2018 8:12 pm
Forum: Mac
Topic: First line of subtitle file not being 'burned in'
Replies: 16
Views: 668

Re: First line of subtitle file not being 'burned in'

[07:49:11] * subtitle track 1, English (track 0, id 0xff) Text [SRT] -> Render/Burn-in, offset: 0, charset: ISO-8859-1 ISO-8859-1 doesn't have a byte order mark. The mark in the file is ef bb bf which corresponds to UTF8. You're using the wrong charset setting when specifing the HandBrake srt file ...
by JohnAStebbins
Wed Mar 07, 2018 5:33 pm
Forum: Windows
Topic: How to use Handbrake to cut videos without re-encode
Replies: 3
Views: 343

Re: How to use Handbrake to cut videos without re-encode

You can't do this with HandBrake. HandBrake *always* re-encodes. If you had provided an activity log showing a scan of your source video I could be more definitive. But it's likely you won't be able to do what you want even with a tool that is specifically designed to do this. Video is often encoded...
by JohnAStebbins
Thu Mar 01, 2018 10:01 pm
Forum: *nix
Topic: Handbrake somehow inhibiting display standby?
Replies: 6
Views: 5549

Re: Handbrake somehow inhibiting display standby?

Yes, that is the only change that could have had any effect on this. Hopefully it now inhibits suspend mode without affecting display sleep mode.
by JohnAStebbins
Wed Feb 28, 2018 6:37 pm
Forum: *nix
Topic: A Question Asked in Earnest and with Sencerity
Replies: 1
Views: 185

Re: A Question Asked in Earnest and with Sencerity

We certainly know how to make rpm packages. But unfortunately, it is *not* as easy to produce multiple rpm packages (one for each commonly used variant of rpm based linux distro). For example, it would do *you* no good if we only packaged for Fedora 27. Ubuntu has a nice build server (called launchp...
by JohnAStebbins
Wed Feb 07, 2018 11:22 pm
Forum: Windows
Topic: Conversion result not like original?
Replies: 8
Views: 5634

Re: Conversion result not like original?

HandBrake detects and automatically crops black boarders around video. In cases such as yours where there is a brief sequence that renders video into the black border area, HandBrake can get the cropping wrong. You can manually disable cropping on the picture pane in the UI.
by JohnAStebbins
Wed Feb 07, 2018 9:57 pm
Forum: *nix
Topic: HandbrakeCLI scanning an HD Blu-ray directory, mpls_parse
Replies: 6
Views: 2166

Re: HandbrakeCLI scanning an HD Blu-ray directory, mpls_parse

Noted. There is a workaround, but this is also a bug becuse this functionality works against normal blu-ray rips as a directory, whereas it doesn't work as intended scanning the same UHD blu-ray directory. :) Where in HandBrake's documentation do you see it say that UHD bluray is supported :mrgreen...
by JohnAStebbins
Thu Jan 25, 2018 12:21 am
Forum: Windows
Topic: Hang at 00.00%
Replies: 31
Views: 1148

Re: Hang at 00.00%

@Rodeo, could you please post a CLI log with -v3. I can't seem to reproduce the issue.
by JohnAStebbins
Fri Jan 19, 2018 4:19 pm
Forum: Windows
Topic: How do I do a Variable Bitrate Encode with a Maximum Bitrate?
Replies: 11
Views: 523

Re: How do I do a Variable Bitrate Encode with a Maximum Bitrate?

Rodeo wrote:
Fri Jan 19, 2018 4:13 pm
Well, technically you need to use VBV if you want your stream to be fully compliant with the spec, but setting your H.264 level to anything other than "auto" already takes care of that aspect.
That falls under use case 2 in my list. "Known limited capabilities".
by JohnAStebbins
Fri Jan 19, 2018 4:17 pm
Forum: Windows
Topic: How do I do a Variable Bitrate Encode with a Maximum Bitrate?
Replies: 11
Views: 523

Re: How do I do a Variable Bitrate Encode with a Maximum Bitrate?

I left out one twist on use case 3 from the list above that may actually apply to you. You have a collection of videos that is mostly low complexity (i.e. it is easily encoded to high quality with low bitrate), but you have a few videos that are high complexity and you want all videos in the collect...
by JohnAStebbins
Fri Jan 19, 2018 4:09 pm
Forum: Windows
Topic: How do I do a Variable Bitrate Encode with a Maximum Bitrate?
Replies: 11
Views: 523

Re: How do I do a Variable Bitrate Encode with a Maximum Bitrate?

This whole situation came about when I wanted to see how much quality I could retain/make the video look its best for me, when limiting the bitrate/filesize There are only a few reasons anyone should use vbv settings. You are streaming over a network with known limited bandwidth Your playback devic...
by JohnAStebbins
Wed Jan 17, 2018 8:00 pm
Forum: General
Topic: Ripping BR/DVD as HEVC 10/12-bit?
Replies: 23
Views: 1130

Re: Ripping BR/DVD as HEVC 10/12-bit?

oRBIT2002 wrote:
Wed Jan 17, 2018 7:50 pm
Perhaps a stupid question but if Handbrake only supports 8-bit, there's still 10/12-bit options available for HEVC-encoding. What's the point of that?
viewtopic.php?f=6&t=37297&p=176079#p176037
by JohnAStebbins
Wed Jan 17, 2018 2:50 pm
Forum: Windows
Topic: Framerate conversion PAL->NTSC-DVD back to PAL/mkv
Replies: 11
Views: 454

Re: Framerate conversion PAL->NTSC-DVD back to PAL/mkv

Heh, it's been so long since we've had a release, I forgot that this wasn't added till after 1.0.x was released. So as you observed, it's only in the nightly builds.
by JohnAStebbins
Tue Jan 16, 2018 7:09 pm
Forum: Windows
Topic: Framerate conversion PAL->NTSC-DVD back to PAL/mkv
Replies: 11
Views: 454

Re: Framerate conversion PAL->NTSC-DVD back to PAL/mkv

What output framerate are you using in HandBrake? HandBrake has a smart decimator that may help if you set a constant output framerate. When converting to CFR, HandBrake will preferentially drop duplicate frames when it decides that it must drop a frame in order to match the requested framerate. So ...
by JohnAStebbins
Mon Jan 15, 2018 7:35 pm
Forum: General
Topic: Ripping BR/DVD as HEVC 10/12-bit?
Replies: 23
Views: 1130

Re: Ripping BR/DVD as HEVC 10/12-bit?

Keep in mind that what is being stored in 10/12 bits is not the original spatial domain pixel values, but rather the temporal domain coefficients. When converting from spatial to temporal, there are rounding errors where information is lost. Also, coefficients are deliberately quantized (more inform...
by JohnAStebbins
Sat Jan 06, 2018 6:23 pm
Forum: General
Topic: Parallel filtering of multiple frames
Replies: 2
Views: 212

Re: Parallel filtering of multiple frames

I guess most (if not all) image filters are single threaded Several HandBrake filters are in fact multi-threaded. nlmeans, lapsharp, unsharp, grayscale, decomb, combdetect are all multi-threaded. Detelecine, hqdn3d, deblock, cropscale, rotate, deinterlace, pad are single threaded. Some of the singl...