Search the Community

Hi All, TL;DR Do either the MKV container or MP4 container support 4K AV1 content with HDR10? I've been having issues getting it to work. More Details: Recently I've been backing up my own and my father's Blu Ray collections which consist of both regular Blu Rays and 4K/HDR Blu Rays. I haven't had any trouble with the regular Blu Rays yet, but lately I've noticed some strange issues with the 4K HDR ones. For some context, I recently got an AMD RX 7800XT which has support for both AV1 decoding and encoding. I decided I should try to compress the 80GB 4K Blu Rays using AV1 because why not! The movie I used as a test subject was my Dune 4K Blu Ray, which contained both Dolby Vision metadata and HDR10 metadata according to dovi_tools The 4K Blu Rays are encoded using HEVC/H265 which my graphics card should support for decoding, and starting with the 1.7.x builds of Handbrake, they also support AMF AV1 encoding so I gave that a try. I found out that Handbrake doesn't support AMF decoding at all, so I was limited to around 40fps by the CPU decoding. This wasn't that big of a problem personally, but still kinda irritating. So I used the FFMPEG command line executable since they support AMF decoding through both the existing DirectX 11 Video Acceleration API and the new Vulkan Video API. This did technically work, and I was now able to transcode at closer to 80fps! Although when I went back to play the 4K AV1 MP4s, VLC wasn't tone mapping the HDR properly and everything was washed out. Strange. I checked that the original media was tone mapped properly by VLC, which it was (not desaturated at least). I did a bit of research and found out that some people were reporting that the MP4 container doesn't support all of the metadata needed for HDR (which I eventually proved false... Sort of) so I retired the transcoding but now into an MKV file. Same problem, although the HDR10 metadata was being detected by VLC, just without tone mapping for some reason. So the AV1 MP4 didn't have the proper metadata and wasn't getting tone mapped, and the MKV had the correct metadata but still wasn't being tone mapped. I re-tried the same steps, but instead of AV1, I used HEVC so basically I was just compressing the original by reducing the bitrate. That time, both as an MP4 and MKV, the HDR10 metadata and tone mapping worked properly in VLC. I was able to use dovi_tools again to verify that HDR10 metadata was present in at least the AV1 MKV as well as the HEVC MKV and MP4, so I'm beginning to think it might be a problem with VLC. I tried using Handbrake anyway to create the 4K AV1 files instead of just FFMPEG and confirmed the same exact behavior; metadata was present for both codecs in and MKV container, but VLC didn't tonemap the AV1 video properly. I made sure VLC was updated, same with FFMPEG and Handbrake. Any insights would be welcome

I've installed HEVC Video Extension from MS Store. But It's not working for some reason. I tried to reset, also reinstall it. So anyone have any idea why?. I recorded H.265 format videos on obs for better quality. But it's shows media offline on Resolve 18(free version). I search on YouTube about that, they says you've to install HEVC Video Extension for playing those h.265 videos. Windows Media Player also not playing h.265 either. So need some help for that. My spec: CPU- 5600x, GPU- gtx1660, Ram- 32gb, MB- B550 Aorus Pro v2

YouTube and OBS are working to develop support for AV1 and HEVC RTMP. This means that later down the line (fairly soon) livestreaming on YouTube will support H.264, H.265 and AV1 live ingest over RTMP. According to some documentations it is still in beta testing but progress seems to be getting closer to AV1 and HEVC livestreaming support. There also seems to be plans coming from YouTube to later support HDR livestreaming now that the implementation of AV1 and HEVC are in the works. AV1 has also been tested on NVENC as well as Intel encoders. Summary Progress for AV1 and HEVC for live ingest over RTMP is making fast progress with it going into Beta. Quotes My thoughts I think having RTMP support for AV1 and HEVC is gonna change the live streaming space for the better. Having better quality optimisation for lower bandwidth streaming is gonna make live streaming more accessible for people as well as for the viewers (countries which have poor internet infrastructure). However, I am curious with how sophisticated HEVC is compared to H.264 are the latency times gonna increase already on top of what we are currently experiencing now? Is AV1 gonna allow for much closer real time latency for higher resolutions like 4K60? Overall, I think its great to see new standards be implemented within the livestreaming space and with new hardware like the RTX 4000 series it will be interesting to see how their dual AV1 chips as well as on Intel come into play. Sources https://github.com/obsproject/obs-studio/pull/8522 https://github.com/veovera/enhanced-rtmp

I use a software called VideoProc Converter (their website looks scammy as hell, but it's actually proven to be useful over the last few years) to convert a large number of personal old video files into x265/HEVC files. This saves me a ton of storage space and as the videos are fairly old and not the highest quality to begin with, I don't notice any drop in picture quality. I recently upgraded from a GTX 1080 to an RTX 4070 Ti and decided to compare the conversion speed between them. I converted a video to HEVC mp4 using my 1080 and timed how long it took. I then swapped in the new 4070Ti and attempted to convert the same file, with the exact same settings and found that it took about 25-30% longer. I repeated the test several times and made sure I had the latest NVIDIA drivers installed. The software has detected both GPU's correctly and does have hardware acceleration enabled. I'm trying to understand why a more powerful card, is performing the workload slower. Per https://developer.nvidia.com/video-encode-and-decode-gpu-support-matrix-new, there's fewer NVENC chips on the 4070 Ti, As I understand it, this just means I can't encode more than 1 stream simultaneously, which is fine as I'm only converting 1 file at a time. Can anyone shed some light on what's happening? My specs are: AMD 5900X Gigabyte X570 Aorus Pro Wifi 64GB 3200MHz RAM 800W PSU Samsung 970 Nvme running at PCIe 4x

Hello everyone. Today, I will tackle a topic that seems to elude common forums such that if one needs all the information in one place, there usually isn't one. So - here is the 3 codecs explained in laymen's terms, and a few HandBrake settings that might be useful. H264: Released in 2003, replaced MPEG2, H263 and MPEG4 part 10. Pros: Really easy to run, has decent enough compression for use cases up to 1080p and was (at the time of release) more than twice as efficient as the older MPEG2 standard. It is also very quick to compress. Cons: Needs quite a bit of bitrate by today's standards to produce watchable content. Gets really blocky in lower bitrates, does not do well with color banding. For a 2 hour 1080p movie, a good H264 encode needs at least 10GB to produce good results. You'll usually see sizes upwards of 15GB though. H265 (8bit): Released in 2013, also known as High Efficiency Video Codec, or HEVC for short. It is a successor to all previously mentioned codecs. Pros: Much higher compression capability than H264, upwards of 2.5x smaller file sizes for equal quality compared to H264. Because of smaller size, it is suitable for use cases like 4K media and above. Cons: Needs dedicated hardware to run (all chips that came out in the last few years support it) and is quite a bit more expensive to compress resource wise. Compared to H264, same files with same settings will take upwards of 3 times longer to compress with single pass compression, and upwards of 5 times longer with dual pass compression. It still has some of that H264 color banding issues well. H265 (10bit): A version of H265. It's also known as H265 Main10, and it's known for its higher fidelity. Pros: Even better compression than H265 8bit without loosing quality, usually 5-7%. Does away with pretty much all color banding issues and masks video artifacts better in general. It is a clear step up from H265 8bit. Cons: 20-30% longer compression times compared to H265 8bit, Needs dedicated hardware to run. Anything from Kabylake (2016) onwards will run it natively. Rule of thumb: When compressing H264 video in HandBrake, you need 50% average bitrate for your H265 10bit encode to not loose any quality when compressing with a Medium preset and 2-pass encode. Arguably, videos will look even better since there will be no color banding artifacts (if original file had any). You can go as low as 35% original bitrate, but you will need a slower encoding preset, Slow-Slower. That will significantly elongate your compression times, more than 10 times longer than an equivalent H264 encode. In my experience, it's better to allow for a bit higher average bitrate. All that said, here's my preferred method. H265 10bit needs around 3000kbps avg. bitrate for a 1080p video at medium preset and 2-pass encode. That is 3mbps. I've done 2mbps runs and gotten excellent results as well. That means - if you have an H264 1080p video with 15mbps of data rate, you can get 90% of the quality with just 3mbps and H265 10bit. That said, a 15mbps 1080p H264 video is very high quality (in consumer terms), so I'd probably run the H265 10bit encoder at least at 5-7mbps to maintain it properly. If you have any questions, I'm here to answer them. For more in-depth info, click here: VP9 vs HEVC (h265) » Quantitative Quality Analysis | Bitmovin Something to look forward to in the future: Versatile Video Coding - Wikipedia A general comparison between h264 and H265 at different bitrates: H.264 vs H.265 comparison (1080p) - YouTube

rocking a 15 3300, with a intel desktop board, DH61CR, 4 gigs ddr 1333, and win 10 32 bit. I use this as a plex server, wherin I need only 1/2 transcoded streams, mostly without any transcoding at all, unless playing HEVC. This setup is too old for me to daily drive, I do got another computer with plex client on the same network. Usually the new setup doesn't need transcoding, direct play works properly on that, even with 4k HEVC. Now the problem is, this CPU is rated for turbo boost upto( I think )3.3 GHz. . While playing transcoded streams, the CPU barely runs at 2 GHz, mostly close to 1.5GHz. Task manager shows usage at less than 70%. Thing is running on integrated graphics mind you. It used to run at full throttle awhile back. Idk what changed, it suddenly starts having these problems. I observed 2.9 GHz clocks on a regular basis. (before these problems).

Hey, I've been performing a few backups and noticed that I couldn't open any of my photos or videos because windows is lacking the HEVC codec. When I click on a file it takes me to the Microsoft store to buy it for £0.79 but will not let me purchase it unless I sign in... I set my pc up as a local account because I cannot be bothered to deal with Microsoft's data tracking or syncing etc.... Is there anyway I can open these files or install the codec without having to have a Microsoft account for my pc? Thanks for the help, Lex

I have recently bought an Android tablet (Realme Pad). It comes with Mediatek Helio G80. I know it's a pretty low powered tablet, but given my use of tab is only restricted to watching media (primarily offline, local media) and reading books, I thought this should be more than sufficient. Since I mostly consume offline media, and that too mostly 1080p HEVC 10bit, I had previously researched regarding the hardware accelerated video decoding capabilities of the Mediatek SoC. I had looked it up on CPU Monkey (here) and it mentioned that the CPU (actually the GPU) has the capability of decoding of HEVC 10 bit videos. But after I bought it, I tried to play the same, it does not provide hardware decoding. I tested it using video files from the jellyfish website (here), even the 10mbps bitrate files stutter heavily. I have tried both with MX player and VLC for Android, did not work for both of them. Am I doing something wrong? Is CPU Monkey is not a reliable website to check this sort of info regarding mobile SoCs? Or do tablet manufacturers deliberately deactivate some capabilities for cost savings? (My tab costs around 190 USD) Any kind of help/information will be much appreciated. :)

I'm looking to buy a NAS 5-6 drives to run a plex server and file sharing for video editing. I've heard that h.265 can be an issue. Is this still the case if I'm streaming the content to an Apple TV, tablet and computer or only when running PLEX from the TV? I read that I would need that I would need an i7 to play back 4k h.265 content. A few youtube channels have been saying the an intel CPU is needed for the iGPU. Is this true??

Does a UHD Blu-Ray use lossless HEVC to compress Master movie files? Or is it lossy? If so, does that mean encodes essentially take a lossy file as input to create another lossy file? Wouldn't that result in perceptible quality loss?

@peotr26 I don't want to hijack that thread so I make a new one. Yes I have Cuda installed. When I set encoder to HEVC in OBS Studio, It greet me with this message when I click Start Recording/Streaming. vdpauinfo show me HEVC is not supported. First I thought my 980 Ti don't support HEVC but It work fine in Windows.

Budget (including currency): Any Country: USA Games, programs or workloads that it will be used for: Some games, but mostly to playback native Canon R5 4K footage which is HEVC (h.265) 10-bit with 4:2:2 color sampling. Other details (existing parts lists, whether any peripherals are needed, what you're upgrading from, when you're going to buy, what resolution and refresh rate you want to play at, etc): Currently can not find a single desktop CPU (or GPU for that matter) that can decode this footage for playback. It is choppy and can only be edited using proxies. I want to cut this step out. I have found these resources: Regarding Intel: https://github.com/intel/media-driver/blob/master/README.md#decodingencoding-features Regarding nVidia: https://developer.nvidia.com/video-encode-and-decode-gpu-support-matrix-new However, I can not find if Ryzen has published anything similar to the tables above. Perhaps their CPU's can decode this footage just fine on one of their higher end models. If that's the case, I'd like to know. Or if someone can try to natively play the footage within Premiere Pro, I can send a sample file. However, I'd have to send through WeTransfer or something. The files are massive.

Hello guys, my rig are intel core i7 3770k at 4.2ghz antec kuhler 920 evga gtx 680 2gb asus vs247 24 'inch 60hz 2 * 4 gb corsair vengeance azrock z77 extreme 3 seasonic 850 watt bronze cooler master haf x full tower 120 gb kingstone ssd 1 tb western digital hdd when HEVC encoding my cpu temps reach 96c, sure i set my antec kuhler 920 fan settings to extreme gets noticably noisy idle temps are 35c maximum i haven't changed thermal paste ever since i bought and installed my antec kuhler 4 years ago are those temps normal? what are the normal temps when HEVC encoding?? should i change my thermal paste?? thanks in advance

source: http://us.download.nvidia.com/Windows/378.66/378.66-win10-win8-win7-desktop-release-notes.pdf nVidia finally released a driver that enables HEVC/VP9 10 bit HW decoding for GeForce cards - it doesn't specifically state, but I'm guessing this is only available for GTX10xx series; dunno the status for GTX950/960 after getting my GTX1070 I found it really odd that the only way to HW decode 10bit was though DXVA2 and not through HEVC --- the complete list of GPU decode capabilities: https://developer.nvidia.com/video-encode-decode-gpu-support-matrix#Decoder

I've been reading lately on the optimizations built into kaby lake for 4k HEVC decoding. I stumbled onto the handy bitrate test files over at http://jell.yfish.us/ testing on my 6850k/980ti: Using VLC, i couldn't play any of the 4K samples without extreme performance degradation. Using Windows Media Player, i could handle all the way up to 4k 10bit 300mbps, CPU usage is around 80%. it hits 90% at 400mbps but its choppy. I know maxwell and broadwell-e both don't support 4k hevc 10bit in hardware, so I'm assuming it's decoding in software - i wonder why media player works so much better than VLC for this. Does software decoding even work on the gpu? If so, is there any way to enable it and see how it stacks up to the CPU?

Hi all, This is my first post, and directly with an question about a homemade server (plex media server) I want to build an server that can run the following: PMS (able to stream 4k60fps 10bit HEVC, HDR. Because i want to buy an LG Oled55B6V) (max 2 streams) Run 1 minecraft server on demand. Create backups of photo's of the mobile devices we use here I read alot of forums, posts but still dont know what to do. I could order Cheap Xeon processors from Ebay / alibabba. Could some one give me some info what to look at and what kind of processor could handle the transcoding of plex.

i own a Samsung nx1 and it records in hevc h.265 but in order to edit it i need it to be standard h.264 i want to use handbrake but i dont know how to convert h.254 to h.264 please help!!

After more than a year of videos explaining the Linus Media Group workflow and server setups I am wondering why there has not been a video explaining the advantages and disadvantages of H.265? Also, AOMedia Video 1, AV1, codec which has support from some of the largest tech companies in the world including amazon, google, intel and microsoft will apparently have a release date in 2017. Is this something on your radar has a possible solution to simply your professional workflow? I asked a question similar to this about a year ago but I am basically asking again wondering if the landscape has changed in anyway since then, enough so for garner an answer different to "HEVC is too new and youtube doesn't support it". Thank you for the great content.

I recently bought a Gopro hero 6, which records in HEVC when using 4k60. It records at 66mbps, which my computer can't view without lagging, the CPU usage rises to 100%, while if i decode it to h.264 the CPU usage is 4%. i have tried using VLC which wont even play the video, shows just the first image unless i slow it down to 50%, WMP which just shows a error code, and Movies and TV which shows the video, but not at full speed and is stuttering a bit I have read that you Kaby lake or newer to efficently view, and somwhere else that is only matters if i use the iGPU. Which is correct? PC specs is in my signature

Hey folks I am in the process of converting my media library to HEVC in the idea of saving some space ( correct me if wrong pls ) Say I have a 2 Mbps bitrate h264 encoded video file. I am to convert it to a HEVC format with Wondershare Video Converter. Should I stick with 2 Mbps HEVC to retain clarity or Should I choose 1 Mbps because I heard HEVC occupies half the space compared to h264. In other words Consider h264 bitrate to be a variable { x } What bitrate should h265 be to retain same detail as the original h264 video ??

hi, i want to buy a new laptop and im interested with Lenovo Ideapad 330.before i buy this laptop i would like to ask, does this laptop support .mkv 4k playback?i want to play 4k movies from my laptop to my 4k tv via hdmi.does this laptop support high bitrate hevc 4k movies .mkv?this is the spec of this laptop:- Processor Intel® Core™ i5-8250U Processor (1.60GHz, 3.40GHz Turbo, 4C8T, 6MB cache) Memory 4GB DDR4 2133 ONBOARD Memory Slot Up to 12 GB DDR4, One extra ram slot Storage 1TB HDD Graphic Card NVIDIA® GEFORCE® MX150 GDDR5 2GB Resolution 15.6 FHD TN AG 200N Operation System Windows 10 Home Optical Drive DVD RW

I have been researching this for a while, in both Qualcomm(7 series chipsets) and Exynos(7 series chipsets) websites looking for hevc 10 bit video playback supporting processor. But they all say they support hevc video playback but does they support native hevc 10 bit decoding. Because if they don't then it will use cpu to process the file which basically transcodes back to hevc consuming insane battery life. Basically I want to buy a new phone but not premium flagship so looking for the lowest chipset which support 10 bit hevc video playback and then which mobile phone has the same chipset.

Hi, I often record documentaries and dramas on my HDD/BD recorder, but its on-the-fly h264 compression is lacking (and produce quite huge files). So far, my best solution was to record a higher quality MPEG-2 file, rip the Blu-Ray, and compress the file to x264 using Handbrake. My computer is old, to say the least, so the whole process is very time consuming, usually 4 to 6 hours for each hour of video on the x264 medium setting. I'm not even trying hevc/x265, I think it would kill the computer. I will buy or build a new computer, and was wondering if you guys could recommend a processor for video encoding. A few things to know : I'm in Japan. Most of the stuff I record is 1920x1080 / 59.94i. A few shows are "HD light", 1440x1080 / 59.94i. However, I'm thinking to maybe upgrade my cable TV set-up + HDD recorder next year and record some stuff in 4K. Obviously, I'll still use the MPEG-2 recordings as a source. I will use hevc x265 to save some space. I always use the Decomb filter in Handbrake. I'm not necessarily looking forward to super high-speed encoding (or else I would use the GPU and call it a day). Real-time encoding would be fine, as most of the shows I record are 30 to 60 minutes long. Considering my budget and what's available on the Japanese market, choice would certainly be between a Ryzen 2600 / 3600 / 2700 / 3700 (or their X variant), or a I7-9700/9700F/9700K. What would be the best choice for my situation? Thanks!

Looking for the cheapest GPU I can get for 4k HEVC playback. I am looking into the RX 550 at the moment as it needs to be low power for a HTPC I have. Any advice would be amazing. Thank you.

Hey all, as an owner of a 32:9 monitor setup (and possibly 48:9 in the future), I noticed that with NVENC, H.264 recordings would not run, forcing me to encode in HEVC, which NVENC on the 2070S is not capable of encoding in such high resolution. Here's some information I've gathered so far: NVENC H.264 - Maximum resolution supported - 4096x4096 NVENC HEVC - Maximum resolution supported - 8192x8192 My setup: Ryzen 7 3700X 2070 Super 32GB 3000MHz Current resolution: 5120x1440 (2 1440p monitors); Planning to upgrade to 7680x1440 (3 1440p monitors) Since HEVC with NVENC hits full utilization regardless of bitrate or rate control, I believe NVENC on my GPU is not powerful enough, forcing me to run recordings with x264 (CPU encoding). Using x264 induces severe bottleneck while gaming and my bitrate would have to be tuned down to crap, even so, audio stutters... It's just not a pleasant experience. So, those with ultrawide setups that are lucky enough to get their hands on an RTX 30 Series GPU, what is your experience with video encoding? (Which should I buy?) Any suggestions for me?