Turn off hardware encoding to have the cpu software encode the frame. In contrast, a gpu is composed of hundreds of cores that can handle thousands of threads simultaneously. Cpu versus gpu encoding was generally about quality versus execution. Encoding is the process of compressing large video files for easier uploading to the internet. Twitch has the greatest transfer speed of 6 mbps, which isnt a ton when you have to encode 60 edges of 1080p video consistently. Below is how to enable gpu encoding to speed up your video conversion. This post addresses the benefits of using a hardware encoder vs.
The regular release still uses cpu for the encoding. The use of graphics cards in such tasks still requires the help of a cpu. Each of these have their benefits, but your best bet was to use your cpu. The hardware acceleration talked about in the linked info is for hardware decoding. How gpuaccelerated encoding enables faster, high quality hdr. Interference between quicksyncvaapi encoding and cpu. Looking at this process we can see that the two mandatory steps, decoding 1 and encoding 4, both require cpu power. Nvidia has updated its nvenc video encoder with its rtx cards. I find cpu turns out a much better quality because therea re more advanced algorithms that can be run on the far more complex cpu extensions available.
First of all, make sure your computer has a nvidia cuda, amd or intelenabled graphics card. If you are using a hardware encoder, these are reliant on whatever hardware they are attached to, which is usually. I imagine gpus with hardware encoders radeon 7000 series and newer, geforce 600 series and newer will get hardware encoding support soonish. Its often not worth it to neglect one component at the expense of the other. Depending on your source media and how powerful of a cpu gpu you have, the performance gains may only be a 2x increase in export performance, but in some cases, we saw up to a 4x improvement in export performance. Just didnt wanna try the gpu one and ruin my card or burn it out somehow xd thankies. Multithreaded applications can benefit a lot from hyperthreading, this is because multithreaded applications are coded with the intent to use multiple threads at the. Yeah that sounds about correct, as i personally have dual gpu s and have not found a way to get one to do the encoding, while the other is doing the gaming. In this point, cpu encoding is superior to gpu encoding in transcoding speed. Avatar 720p the good news stops pretty quickly however when you look at how the software handles encoding. Compared to the existing hardware acceleration method using quicksync, the nvidia nvenc.
If you have a sandy bridge intel cpu or newer you can encode\decode using quicksync or the gpu can also encode\decode the stream. Gpu based video encoding is usually optimized for high bitrate streaming rather than for playback. Oct 15, 2018 you can set your cpu to do software encoding. Indepth analysis of the difference between the cpu and gpu. On my desktop, the hardware encoding option is grayed out, forcing one to choose software. It cant be the gpu, as you can see both machines have an awesome 10series nvidia. Gpus afaik based on no experience programming them arent built to handle parallel algorithms with earlyout conditions like highquality video encoding, e. Best streaming software you should be using updated for 2019. My understanding is that the search space for video encoding is so big that smart heuristics for earlytermination of search paths on cpus beat the bruteforce gpus bring to the table, at least for high quality encoding. Is it safe to assume that hardware encoding is always better and should be turned on rather than relying on software encoding. Jan 03, 2016 i have tested cpu encoding with an amd fx 8 core and an nvidia gtx 460. If you are using a hardware encoder, these are reliant on whatever hardware they are attached to, which is usually a gpu. If you want better quality, go with software encoding. Testing amd vce on handbrake using a 2400g apu hardforum.
How does it compare to software encoding with x264 on cpu at 6 mbps, and which should you use. You cpu and gpu both lack a hardware encoder, and your cpu is pretty lackluster for software encoding, sorry to say. Please dont reply with answers like central processing unit and graphics processing unit. To the best of our knowledge, the above performance benchmarks for j2k lossy and lossless encoding are the fastest among all existing open source and commercial jpeg2000 encoders on cpu or gpu both for single image mode and for batch mode. Cpu encoding is more stricted with cpu configuration while gpu encoding has more demanding on gpu configuration. But with nvidias new rtx video cards, that may have changed.
If you didnt know, when choosing h265 hevc one has the option of using software or hardware encoding. For example, why not use multiple cpus instead of a gpu and vice versa. Cpu software, and my cpu become saturated when converting videos into a dvd. What is gpu encoding and how to use it to speed up conversion. This means that a good and stable cpu always sets the basis for your transcoding performance. For now, lets just say that specific encoders let you use hardware encoding to share the load between the cpu and the gpu. Theoritically speaking, gpu encoding is a little bit faster than cpu encoding. Live gushing expects you to pack a video communicate into a little measure of transmission capacity. The final setting i was pleased with handbrake was 17.
If you have a good one, it takes the strain off the cpu and is faster. The software will always use the gpu that is running the game to do the encoding as well, i do believe this is simply due to hardware software limitations. Gpubased video encoding is usually optimized for high bitrate streaming rather than for playback. We need to emphasize some important differences at h. Gpu vs cpu mainly means uncompressed raw vs nonraw. Turn off hardware encoding to have the cpu software encode the frame cpu software. Overall, the performance with gpu hardware acceleration is very impressive. Software from your post it sounds like its either gpu or software. The display latency is just as bad, if not worse, than software encoding. Cpu encoding is focused on quality where gpu encoding is focused on speed if you can accept lower quality or higher final bitrate then gpu encoder will be faster, if your goal is highest possible quality at lowest possible bitrate then cpu based encoder will be closer to your goal at a cost of encoding time.
Gpu encoding, while much much faster than cpu encoding, does provide a lower quality image overall. It wont make any difference to the user which of those gpus buys in relation to his handbrake encode time. Yet, if the video transcoding task exceeds what gpu can handle, then cpu will automatically take over the rest of work to jointly complete the task. The inability of traditional gpu designs to perform rdo encoding has led to the perception that gpu implementations deliver lower quality. Software encoding make use of the program and your cpu. However, as ive read through the threads here ive noticed some discission of difference in. If you have a newer graphics card very powerful which supports opencl 1. The good news is that the cyberlink application allows you to choose to turn gpu acceleration on for any of the decoding or encoding phases, or both see our explanation on page 2. Gpus deliver the onceesoteric technology of parallel computing. That hardware encoding option refers to whether or not the cpu on that machine has the nerve intel hevc hardware encoding circuits. And, an as an off topic i need to tell you this, when i try to encode some mkv movies to dvd but using dvdfab, this one does, i mean, let me encode the movie with gpu mode and the proccess that convertx does with cpu mode and takes almost one hour or more, dvdfab with gpu mode does the same in just 1825 minutes and believe me please, i try.
Gpu accelerating enables you to convert video two to five times faster by using gpu hardware if you convert nonprotected videos with h. Gpu vs cpu for video editing it will be best to purchase a better cpu over a better gpu, this is because video editing is heavily multithreaded meaning more cpu cores is king. The gpu % usage goes down a lot, no matter if using nvenc or quicksync, and the cpu usage seems to go up a bit, as seen if i enable the external encoding server it uses around 78% of the cpu. The software will always use the gpu that is running the game to do the encoding as well, i do believe this is simply due to hardwaresoftware limitations.
In any case, with nvidias new rtx video cards, that may have changed. Im not an expert in this area, so its hard for me to tell between the gpu and cpu which plays the most important role. On the other hand we see manufactures that packs the software in a hardware box and raises the price radically high. It sounds single pc is better off gpu but wanna make sure. Quicksync is windows only and uses the igpu in the cpu. Apr 06, 2019 cpu versus gpu encoding was generally about quality versus execution. Perhaps its dependent on the way the software is written, im not sure. I am seeing some interesting behavior when turboboost is enabled, and am trying to explain it. How can i tell if my cpu or gpu is doing the encoding. Hi dear people first of all i wish to tell you my first language is spanish but i. For hardware encoders it depends on their capabilities and generation. If your cpu cant encode at good quality, get a ryzen 9 39003950 or the newest ryzen tr.
Gpu choice handbrake encoding using hardware gpu 775m vs. Note that gpu videoencoding is done on fixedfunction hardware, not on the normal gpu execution units. Softwarebased decoding is a different beast altogether. You cant install multiple cpus on your pc but you can install several gpu cards up to 4 based on your computer configuration to dramatically improve video processing speed. Hello, i have an interesting issue on my research system with a xeon e31285lv4. Nov 16, 20 quicksync, vce and shadowplay are very new and in parts depend on the cpu gpu you use. Each of these has its advantages, however, your most solid option was to utilize your cpu. As we know, these are the fastest benchmarks on the market for j2k encoding both for cpu and gpu. This is frequently used scenario for transcoder solutions when initial and final streams are compressed according to h264 algorithm. While some people think the tradeoff is not worth it, i personally believe the overall gain in speed outweighs the subjective 10% drop in image quality at set bitrate. Hardware encoding is to make it simple the use of your graphic processing unit video card. The gpu % usage goes down a lot, no matter if using nvenc or quicksync, and the cpu usage seems to go up a bit, as seen if i enable the. Dec 04, 2018 macx video converter pro is a richly featured 4k video processing software, downloader, editor, recorder and slideshow maker, dedicated to converting a laundry list of video formats such as mp4, h. Architecturally, the cpu is composed of just a few cores with lots of cache memory that can handle a few software threads at a time.
In most cases you will need a slightly higher bitrate to achieve the quality of a pure x264 cpu encoding. The key traits that make software encoders so popular are. X264 does cpu or rtx gpu encoding work best for twitch. If you are using a software encoder x264, then it will require plenty of cpu timeresources to do live encoding. Yeah that sounds about correct, as i personally have dual gpus and have not found a way to get one to do the encoding, while the other is doing the gaming. This only works if the gpu is more powerful than the cpu, it will reduce the performance on new cpus which are much more powerful at decoding compared to graphics cards. Quicksync, vce and shadowplay are very new and in parts depend on the cpugpu you use. Question help cpu or gpu what is best for streaming. Affordability, because even the good ones come with no costs attached. Why is the gpu faster in crunching calculations than the cpu.
Cpu versus gpu encoding was traditionally about quality versus performance. To use quicksync to encode with a gpu requires quite a bit of finagling but the result is completely not worth it. Cuda is nvidia ati so you can use hardware encoding. You could alternatively select your nvidia gpu to handle that task. Try dvdfab and download streaming video, copy, convert or make blurays,dvds. Macx video converter pro is a richly featured 4k video processing software, downloader, editor, recorder and slideshow maker, dedicated to converting a laundry list of video formats such as mp4, h. Even though the ability to offload to the gpu has existed for well over 6 years, the quality is still really bad in comparisons to the much slower cpu encoding. Nov 29, 2019 for now, lets just say that specific encoders let you use hardware encoding to share the load between the cpu and the gpu. Avatar 720p the good news stops pretty quickly however when you look at. What are some types of things that one of them can do and the other cant do or do efficiently and why. I just dont like gpu encoding due to the quality loss. I have tested cpu encoding with an amd fx 8 core and an nvidia gtx 460. You could then again choose your nvidia gpu to deal with that task.
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