فرمت فشرده سازی H.265+ در دوربین مدار بسته چیست؟

فشرده سازی H.265+ در دوربین مدار بسته یک استاندارد پیشرفته برای فشرده سازی فیلم است که می تواند کیفیت بصری شگفت انگیزی با صرفه جویی ۵۰ درصدی در بیت ریت ایجاد کند. دوربین های مدار بسته نیز از این نوع فشرده سازی استفاده می کنند. فشرده سازی H.265+ در دوربین مدار بسته به عنوان جانشین H.264، فشرده ساز ویدئویی با بازده بالا بوده و با ۵۰ درصد صرفه جویی در بیت ریت، کیفیتی معادل با H.264 / AVC ارائه می دهد. به عنوان مثال، فیلم های رمزگذاری شده در پروفایل DivX HEVC درون کانورتر، کیفیت بالای پروفایل DivX Plus را در اندازه پرونده کوچک تر حفظ می کنند. HEVC برای پخش ویدئو با کیفیت بالا حتی در محیط های شبکه متراکم حیاتی است و یک عامل محرک در تحویل محتوای ۴K به نمایشگرهای ۴K/Ultra HD است.
چرا باید از فشرده سازی H.265+ در دوربین مدار بسته استفاده کرد؟
اگر با کدک های ویدئویی و فشرده سازی دوربین های امنیتی آشنا هستید، با H.264 که به AVC نیز معروف است آشنا هستید. H.264 پرکاربرد ترین کدک ویدئویی در سیستم های دوربین مدار بسته است. اما فشرده ساز H.265 یک کدک دیگری است که به آرامی در حال محبوب شدن در سیستم های دوربین مداربسته است.
فشرده ساز H.265، همچنین به عنوان HEVC برای کدگذاری ویدئو با بازده بالا شناخته شده و آخرین استاندارد فشرده سازی فیلم در خانواده MPEG است. به این منظور، تیمی مشترک برای عملکرد دو برابر فشرده سازی در زمینه کدگذاری ویدئو (JCT-VC) ایجاد شده است که جهت ارتقا و گسترش کدک H.264 / AVC، طراحی شده است.
اهمیت فشرده سازی H.265+ در دوربین مدار بسته
اساساً، H.265 می تواند یک فایل ویدیویی را تقریباً به نیمی از اندازه پرونده H.264 تقریبا ۴۰ تا ۵۰٪ کوچکتر فشرده کند و در عین حال کیفیت فیلم را حفظ کند. اگر اندازه پرونده و میزان بیت ریت آن یکسان باشد، کیفیت فیلم بسیار بالاتر خواهد بود. این امر به ویژه در دنیایی که فیلم های با رزولوشن بالا مثلا ۱۰۸۰p و ۴k به طور فزاینده ای رایج شده اند و سرعت و کارایی داده ها حیاتی هستند، بسیار مفید است.
H.265 با استفاده از پیش بینی حرکت، به این کیفیت تصویر دست می یابد و با اینکه H.264 نیز از پیش بینی حرکت استفاده می کند. H.265 می تواند از بلوک های ماکروی بسیار بزرگتر ۶۴×۶۴ پیکسلی، در مقابل ۱۶×۱۶ پیکسلیH.264 استفاده کند. این باعث می شود H.265 کارآمدتر باشد زیرا برای رمزگذاری تصویر یکسان به اطلاعات کمتری نیاز دارد و همچنین پیش بینی بهبود یافته تری برای هر تصویر ایجاد کرده، یک تصویر صاف تر با داده های کمتر و ادغام منطقه حرکت بهتر ایجاد می کند.
فشرده سازی H.265+ در دوربین مدار بسته
H.265 یا HVEC همچنین شامل Adaptive Motion Vector Prediction است که به رمزگذاری بردار های حرکتی در ۳۵ جهت داخل تصویر کمک می کند. برخلاف H.264 که فقط دارای ۹ جهت داخل تصویری است. H.265 همچنین دارای فیلتر رفع انسداد و Sample Adaptive Offset است.
مانند نسخه قبلی H.264، H.265 فشرده ساز قادر است از رزولوشن های ۸۱۹۲×۴۳۲۰ از جمله ۴k UHD پشتیبانی کند و تقریباً برای هر کاربردی قابل استفاده است و برای استفاده در دوربین های مدار بسته و سیستم های نظارتی، بسیار عالی است.
مانند H.264 و MPEG-2، HEVC یا H.265 نیز از سه نوع فریم I، B و P در گروهی از تصاویر استفاده می کند که شامل عناصر فشرده سازی درون قاب و درون فریم است. HEVC شامل پیشرفت های بی شماری مانند بلوک های کدگذاری شده مدل درختی است. ما می دانیم که H.264 از ماکروبلاک هایی با حداکثر اندازه ۱۶×۱۶ استفاده می کند، HEVC از بلوک های کدگذاری شده مدل درختی یا CTB با حداکثر اندازه ۶۴×۶۴ پیکسل استفاده می کند. اندازه های بزرگتر بلوک هنگام رمزگذاری اندازه های بزرگتر قاب، مانند وضوح ۴K، کارآمدتر هستند که در شکل زیر نشان داده شده است:
- در شکل بالا نشان داده شده است که اندازه بلوک های بزرگتر کارایی رمزگذاری را افزایش می دهد.
- جهت های پیش بینی بیشتر: ۲۶۴ از ۹ جهت پیش بینی استفاده می کند این در حالی است که HEVC می تواند از بیش از ۳۵ مورد استفاده کند، بلوک های پیکسل مرجع بالقوه بیشتری را اضافه می کند و فشرده سازی درون فریم کارآمدتری را تأمین می کند که این درهزینه و زمان رمزگذاری باعث صرفه جویی می شود.
مزایای استفاده از فشرده سازی H.265+
از آنجا که H.265 بسیار کارآمدتر از سایر کدک ها است، با حفظ کیفیت فیلم یکسان، پهنای باند کمتر و فضای ذخیره سازی بسیار کمتری را بر روی هارد دیسک اشغال می کند. شما قادر خواهید بود فیلم های نظارتی بسیار بیشتری را در فضای کمتری با تصاویر و فیلم های واضح تر به صورت هم زمان ذخیره کنید و می توانید با استفاده از ضبط و ذخیره سازی بصورت ابری، نیاز به سخت افزار فیزیکی را از بین ببرید که می تواند به صرفه جویی در هزینه های کلان، افزایش کارایی و نگهداری کمتر در زیرساخت های سیستم IP منجر شود.
معایب استفاده از فشرده سازی H.265+
H.265 با اینکه کیفیت و عملکرد فیلم را هنگام فشرده سازی فیلم بسیار بهبود یافته ارائه می دهد، اما هنگام استفاده از آن برای استفاده در سیستم نظارت تصویری، اشکالاتی وجود دارد.
اولین مسئله، سازگاری پخش است. در حالی که تقریباً هر پخش کننده ویدیوی معمولی از H.264 پشتیبانی می کند، تعداد زیادی از پلییرهای معمول هنوز از H.265 پشتیبانی نمی کنند و این امر، پخش را در بسیاری از سیستم عامل ها دشوار می کند. با اینکه چند پلییر منتخب از جمله VLC، پخش H.265 را ارائه می دهند و با وجود اینکه H.265 چندین سال است که منتشر شده است اما هنوز کدک بسیار محبوبی نیست.
اکثر شرکت هایی که از فشرده سازی H.265 در دوربین ها و سیستم های خود استفاده می کنند شامل پخش کننده یا پلییر اختصاصی سازگار با H.265 هستند که به شما امکان می دهد با استفاده از کدک، فایل ها را باز و مشاهده کنید. انتقال فایل های ویدئویی به یک رایانه یا درایو دیگر بدون پلییر، با این وجود می تواند منجر به مشکلات عدم سازگاری شود چون بسیاری از مرورگرها مانند Chrome، Firefox و غیره از قالب پشتیبانی نمی کنند.
H.265 همچنین سخت افزار بیشتری دارد و به پردازش بیشتر برای رمزگشایی و پخش فیلم نسبت به سایر کدک ها نیاز دارد همچنین، پردازنده ها و کارت گرافیک های سریعتری را می طلبد و فقط دوربین های IP طراحی شده برای استفاده با H.265 با پردازنده های سریعتر و قدرتمندتر امکان استفاده از آن را دارند.
نتیجه گیری
اینکه سیستم دوربین H.265 برای محل کار یا خانه شما مناسب است یا نه به عوامل مختلفی از جمله بودجه، نیاز به وضوح دوربین و سخت افزار بستگی دارد. اگر می خواهید مقدار زیادی فیلم با کیفیت بالا و با وضوح بالا ضبط و ذخیره کنید در حالی که هر گونه افت کیفیت را به حداقل برسانید، ممکن است ارزش سرمایه گذاری را داشته باشد؛ اما اگر ویدیویی با هزینه کم می خواهید و وضوح پایین برایتان خیلی مهم نیست و شما می خواهید پخش تقریباً روی هر سیستم یا پخش کننده معمول کار کند، دوربین های H.264 احتمالاً هنوز راهی برای پیشبرد هدفتان هستند.
I don’t know whether it’s just me or if everybody else experiencing issues with
your site. It appears as though some of the text on your content are
running off the screen. Can somebody else please provide feedback and let me know if this is happening to them as well?
This may be a problem with my web browser because I’ve had this
happen before. Many thanks
Hey! I just wanted to ask if you ever have any problems with hackers?
My last blog (wordpress) was hacked and I ended up losing several weeks of hard
work due to no data backup. Do you have any solutions to protect against hackers?
It’s remarkable to visit this site and reading the views of all friends regarding
this piece of writing, while I am also keen of getting knowledge.
Also visit my web site … superslot777
Hello! I simply wish to offer you a huge thumbs up for the
great info you’ve got here on this post. I am coming back to your blog for more soon.
Here is my homepage: click here
I take pleasure in, result in I found just what I used
to be having a look for. You have ended my four day long hunt!
God Bless you man. Have a nice day. Bye https://tkssfg.ru
Feel free to visit my page :: взять трал в аренду
always i used to read smaller posts that as well clear their
motive, and that is also happening with this piece of writing which I
am reading now.
I have been surfing online more than 4 hours today, yet
I never found any interesting article like yours. It’s pretty worth
enough for me. In my view, if all site owners and bloggers made good content as you did, the internet will
be much more useful than ever before.
my blog post :: เว็บรวย
Wow, this paragraph is nice, my sister is analyzing these kinds
of things, thus I am going to convey her.
I’m really enjoying the theme/design of your website.
Do you ever run into any web browser compatibility issues?
A number of my blog visitors have complained about my site not operating correctly in Explorer but looks great in Firefox.
Do you have any suggestions to help fix this problem?
I wanted to thank you for this wonderful read!! I absolutely loved every
bit of it. I have got you saved as a favorite to check
out new things you post…
I always emailed this webpage post page to all my associates, since
if like to read it then my links will too.
When I originally commented I clicked the “Notify me when new comments are added” checkbox and now
each time a comment is added I get several emails with the same comment.
Is there any way you can remove people from that service?
Thanks a lot!
We are a group of volunteers and starting a new scheme in our community.
Your web site offered us with valuable info to work on. You have done an impressive job and
our entire community will be thankful to you.
This paragraph gives clear idea in favor of the new viewers of blogging,
that really how to do running a blog.
Hello, i feel that i saw you visited my site so i came to go back the desire?.I am attempting to to find things to improve
my site!I assume its adequate to make use of
some of your concepts!!
Wow, this article is good, my younger sister
is analyzing these things, therefore I am going to tell her.
whoah this weblog is excellent i love reading your posts.
Keep up the great work! You recognize, many
individuals are hunting round for this info, you could aid them greatly.
my site slot เว็บตรง
It wasn’t promptly clear whether Aimia’s board would certainly recommend the
deal, which the consortium said deserved the equivalent of $3.64 per
share. The loyalty firm’s board of directors created an unique committee of independent supervisors “time ago in connection with such involvement as well as conversations and had actually engaged lawful as well as financial consultants,” Aimia said in a declaration. A 26%
speed loss puts it in 2nd location, falling behind Surfshark– which shed just 16.9% of its rate the last time I evaluated it– and knocking
ExpressVPN down to 3rd area with a 51.8% speed loss at last
dimension. “Air Canada’s offer may be tough to approve for Aimia’s management provided that Air Canada had actually suddenly determined not to renew its contract with Aeroplan in 2015 causing havoc in Aimia’s share rate,” claimed Martin Landry, an analyst with GMP Stocks.
The consortium’s recommended purchase of Aimia on Wednesday surprised analysts, provided Air Canada’s strategies for its
very own platform. Air Canada created Aeroplan as in-house commitment
program however it was spun off as an independent company as part of
a court-supervised restructuring of Canada’s biggest airline company.
“Our team believe they will certainly be tempted to accept Air Canada’s offer despite the sour taste it might entrust to some shareholders,” Landry said.
It’s fantastic that you are getting ideas from this paragraph as well as from our discussion made at this place.
I always spent my half an hour to read this blog’s content all the time along with a
cup of coffee.
Generally I do not read article on blogs, however I wish to say that this write-up very
compelled me to try and do so! Your writing taste has been amazed me.
Thanks, quite great post.
I have learn a few good stuff here. Certainly worth bookmarking for revisiting.
I surprise how a lot attempt you place to make any such magnificent informative
web site.
Hello there! I know this is somewhat off topic but I
was wondering if you knew where I could find a captcha plugin for my comment form?
I’m using the same blog platform as yours
and I’m having difficulty finding one? Thanks a lot!
Everything is very open with a really clear clarification of the
challenges. It was truly informative. Your site is extremely helpful.
Thank you for sharing!
Look at my web blog; cerrajeria
For the reason that the admin of this site is working, no question very quickly it will be famous,
due to its feature contents.
Feel free to surf to my site: cerrajeria mendoza
Hmm is anyone else having problems with the images on this blog
loading? I’m trying to determine if its a problem on my end or if it’s the blog.
Any feedback would be greatly appreciated.
my page :: cerrajeria mendoza
Tinsley House is now being increased by 40 locations. What around since the poise period is over?
Yet the immigrants also dropped by over dual. However,
trafficking and also residential violence applications
are most likely to be little in number. Agreement Compliance Audits call for a
specific (tiny) variety of files to be sent
out to the Legal Provider Compensation, which are after that examined.
۳۶٫ See, for instance, ‘I see no factor to leave from the continuous case-law of
the Payment that, since of the substantial optional and public-order element in such decisions, proceedings connecting to them are not to be viewed as identifying the civil
rights of the individual worried, even if they unavoidably
yet incidentally have major consequences on his exclusive as
well as domesticity, prospects of employment, monetary placement and so on …
۱۴: ‘The only thing which is particular is that civil rights in short article
۶ have a self-governing meaning. A law, which lots of
view as outdated, basically avoids Londoners from letting their pads out for much less than three months at a time (without suitable preparation authorization), as well
as a few of the city’s districts have actually attempted taking legal activity against wannabe proprietors on this basis.
Sport-making is a cutthroat business. Utilizing a online business could also be similar to just a little overwhelming since it’s interesting.
So it was virtually overwhelming, in a sense, like there’s so much to do; where do I begin? In 2020, officials ordered Telegram to pay a wonderful of $18.5
million and hand again a lot of the cash that it had raised.
If an emergency does arise, once you’re back on track begin to re-fill the emergency fund as shortly as you possibly
can. You possibly can acquire social proof by asking market experts to review the product you’ve created.
Companies purchase solutions that make them lead available in the
market. The new 2 GIG plan is ready to start out at $a
hundred and ten per 30 days plus tax (or $225
a month for a business fiber), while the quicker 5 GIG
plan will cost $180 monthly (or $395 a month for companies).
After a few month to absorb the new laws, we spoke with leaders
and coaches of three main League of Legends groups — Immortals, Workforce
Dignitas and Workforce Liquid — about what this implies for the future of skilled
play. With a watch towards this, we announced not too long ago that Crew
Liquid is adopting the minimum 10-man roster mannequin essential for franchising,
something we’ve experimented with up to now.
Also visit my webpage; discuss
Соңында қызықты форум
[URL=http://km.ggesport.site/833.html – букмекерлік кеңседе Р±У™СЃ тігудің Т›Т±РїРёСЏСЃС‹[/URL –
Heya i’m for the primary time here. I came across this board and I in finding It
truly helpful & it helped me out much. I’m
hoping to provide one thing back and aid others such as you helped me.
Robotnik pulls down his goggles and the two opponents become locked in a
standoff, making ready to meet in full-on battle.
Spot on with this write-up, I truly believe this amazing site needs much more attention. I’ll probably be back again to see more, thanks for the info! https://active.popsugar.com/@goldpricetoday/profile
Or because you just always want to have your favourite film with you,
in your laptop computer or in your iPad.
Everyone loves it when people come together and share ideas.
Great website, stick with it!
What’s up mates, good piece of writing and pleasant urging commented at this place, I am really enjoying by these.
This article very good bro, my knowledge increased thanks and don’t forget to visit my site :
slot79
This article very good bro, my knowledge increased thanks and don’t forget to visit my site :
top79
This article very good bro, my knowledge increased thanks and don’t forget to visit my site :
win79
The network stated Monday that it and producer Mark Burnett
are discovering methods to proceed “Star Apprentice” sans
Trump.
Highly descriptive post, I enjoyed that bit. Will there be a part 2?
Hey there! This post couldn’t be written any better!
Reading this post reminds me of my old room mate! He always kept talking about this.
I will forward this page to him. Fairly certain he will have a good
read. Many thanks for sharing!
my web page :: getting junkyard auto
Hello There. I found your blog using msn. This is an extremely well written article.
I’ll make sure to bookmark it and return to read more
of your useful information. Thanks for the post.
I’ll definitely comeback.
very insightful, keep it up bro! top79
Здесь надо указать сумму ставки и
нажать кнопку «Заключить пари».
Feel free to surf to my web page … лига ставок
Усовершенство ставок в онлайн слоты
пользователь открывать новый депозит даже должен.
Here is my blog post: промокод ۱xbet, – https://missingkidalert.com/the-ultimate-fire-escape-plan-for-your-home/,
hello there and thank you for your info – I’ve certainly picked up anything new from right here.
I did however expertise a few technical issues
using this web site, as I experienced to reload the site lots of
times previous to I could get it to load properly. I had been wondering if your web host is
OK? Not that I am complaining, but sluggish loading
instances times will very frequently affect your placement in google and can damage your high quality
score if ads and marketing with Adwords. Anyway I’m adding this RSS to my email
and can look out for much more of your respective fascinating content.
Make sure you update this again very soon.
This design is wicked! You most certainly know how to
keep a reader amused. Between your wit and your videos, I was almost moved to start my own blog (well, almost…HaHa!) Wonderful job.
I really enjoyed what you had to say, and more than that,
how you presented it. Too cool!
Filming concluded there in early March, and the shoot included the
city’s downtown space.
Good article! We are linking to this particularly great post
on our site. Keep up the great writing.
Someone essentially help to make severely posts I would state.
That is the very first time I frequented your website page and
so far? I surprised with the analysis you made to make
this actual submit incredible. Excellent job!
Thanks , I’ve just been searching for info approximately
this topic for a long time and yours is the best I’ve found out
so far. However, what in regards to the conclusion? Are you certain in regards
to the supply?
Amazing! Its really amazing piece of writing, I have got
much clear idea regarding from this paragraph.
I loved as much as you will receive carried out right here.
The sketch is attractive, your authored material stylish.
nonetheless, you command get bought an nervousness over that you wish be delivering the following.
unwell unquestionably come more formerly again since exactly
the same nearly very often inside case you shield this
increase.
Here is my blog; Vardaxyn Rx Male Enhancement
Hey! I know this is kinda off topic however I’d
figured I’d ask. Would you be interested in exchanging links or
maybe guest writing a blog post or vice-versa?
My site discusses a lot of the same topics as yours and I feel we could
greatly benefit from each other. If you might be interested feel free to send me an email.
I look forward to hearing from you! Superb blog by the way!
Valuable info. Lucky me I found your website by accident, and
I am surprised why this coincidence didn’t came about earlier!
I bookmarked it. https://www.keralaplot.com/user/profile/1451980
Despite it not hitting theaters till next year, The Black Phone held its
world premiere at Fantastic Fest in Austin, Texas again in September.
Very well written story. It will be valuable to anyone who usess it, including myself.
Keep up the good work – can’r wait to read more posts.
my web page :: Trim Life Labs Keto + ACV
Hi to all, how is the whole thing, I think every one
is getting more from this web page, and your views are pleasant in support of new people.
Make money trading opions.
The minimum deposit is 50$.
Learn how to trade correctly. How to earn from $50 to $15000 a day.
The more you earn, the more profit we get.
I just hope Im useful at all
Ставки на спорт , Ставки на киберспорт/Sports
betting, online casino deposit bonuses 100%
ybju
You could certainly see your skills in the work you write.
The world hopes for more passionate writers like you who are not
afraid to say how they believe. Always follow your heart.
The cutoff time to buy a Powerball tickett varies for every jurisdiction.
My blog; Click to find out more
Excellent way of explaining, and fastidious article to take data regarding my presentation topic, which i am
going to convey in institution of higher education.
Hey! Someone in my Myspace group shared this site with us so I came to give it a look.
I’m definitely enjoying the information. I’m book-marking and will be tweeting this to my followers!
Wonderful blog and excellent style and design.
You could definitely see your enthusiasm in the article you write.
The world hopes for even more passionate writers like you who are not afraid to mention how they believe.
Always go after your heart.
Hi there just wanted to give you a quick heads up.
The words in your post seem to be running off the screen in Opera.
I’m not sure if this is a format issue or something to do with browser compatibility
but I thought I’d post to let you know. The design look
great though! Hope you get the issue solved soon. Thanks
Pick 5 numbers from 1–۶۹ and one Powerball nummber from 1–۲۶٫
Feel free to shrf to my web site: Have a peek at this website
Even if you don’t win in one particular draw, you
might win in a different.
my blog post :: The original source
Apostas esportivas, apostas eSports – Ganhe até X2000 jogos de
aviador por dinheiro
apostas de críquete
Hi! I know this is kinda off topic however , I’d figured
I’d ask. Would you be interested in exchanging links or maybe guest writing a blog article or vice-versa?
My website discusses a lot of the same subjects as yours and I believe we could greatly benefit from each other.
If you’re interested feel free to send me an email. I look forward to hearing from you!
Superb blog by the way!