Oct 15, 2018 · NVENC still seems to struggle with shifting from black to white. You can see in the image below that the orange-yellow light on the bottom right of the image has some blocking for the GPU encoding ... Dec 28, 2020 · That applies to both HEVC and h264 nvenc options. So with defaults being 5000 for HEVC and 10000 for h264, the output gets that exact bitrate, kind of like VBR/CBR mode. (I left preset at High Quality at all times but it doesn't seem to make a difference) NVENC is still probably the best choice as it will usually result in less of an FPS hit than using x264 (even with the same quality recordings). We are using CQP set to 18 for rate control as discussed earlier. You may need to set this value higher (=lower quality) if your PC has trouble. Start with max quality preset if you have a decent PC. This may AFAIK NVENC is similar to the very fast preset in x264. Could be the latest version (on RTX 3000 GPUs) is similar to the fast preset, but I could be wrong; I know they made marked improvements to their encoder this generation, but previous 2-3 have been similar to very fast if not a bit worse looking. for %%a in ("*.avi") do ffmpeg.exe -vsync 0 -hwaccel cuda -i "%%a" -c:v hevc_nvenc -preset llhq -rc vbr_hq -cq 21 -c:s copy -acodec copy "D:\tmp\H.265\%%~na.mp4" The key is using the "-hwaccel cuda" option, which keeps the output of NVDEC decoder output on the GPU's framebuffer for NVENC encoder to work on. If you want to use x264, start with veryfast preset, and experiment with them until you find your sweet spot. Encoding Quality x264 offers a wide range of presets that change quality significantly, and presets above Faster require CPUs with 6+ cores. NVIDIA NVENC offers consistent quality based on the generation of the encoder. Instead, it uses an easier CAVLC algorithm which, given a fixed bitrate, should lower quality relative to CABAC presets. Blurayis essentially High Quality, but with B-Frames capped at 3 for compatibility with bluray standards. All of the presets we tested (both x264 and NVENC) also used 3 B-Frames (where B-Frames were supported).x264 CPU Preset / Quicksync Preset / Nvenc Preset This setting determines how much CPU you want the video encoder (selected in your encoding settings) to dedicate for encoding. After compilation, you can use NVENC. Usage example: ffmpeg -i input -c:v h264_nvenc -profile high444p -pixel_format yuv444p -preset default output.mp4 You can see available presets, other options, and encoder info with ffmpeg -h encoder=h264_nvenc or ffmpeg -h encoder=hevc_nvenc. NVIDIA Video Encoder (NVENC) Interface PG-06155-001_v06 | 8 2.4.2 Fetching Preset Encoder Configuration The client can either use the preset GUID for configuring the encode session or it can fine-tune the encoder configuration corresponding to a preset GUID. This mechanismAs discussed in commit 719d04a I leave my nvenc CQ settings in that branch for you to consider. Just a little open message to you, HB maintainer: Great job maintaining this project. Yes, I sadly was not available to continue the original branch of mine, so I was even more delighted the nvenc exists in HB today. KUDOS again. Wish you the best, ~SvenThis is (hopefully) the last video I make on the subject for a while, but I'm still getting questions about how the "New NVENC" introduced in OBS v23 differs...Oct 13, 2020 · Slow Preset; ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -i input.mp4 -c:a copy -c:v h264_nvenc -preset p6 -tune hq -b:v 5M -bufsize 5M -maxrate 10M -qmin 0 -g 250 -bf 3 -b_ref_mode middle -temporal-aq 1 -rc-lookahead 20 -i_qfactor 0.75 -b_qfactor 1.1 output.mp4. Medium Preset you have already implied -2pass. Run two single passes manually, omitting -2pass and -pass switches, but switching -preset between slow and medium, and compare those (including runtime). If it's not handling the 2 pass process internally then the files should be NVENC. Right now, Nvidia is doing a great job when it comes to delivering meaningful features for streamers. Even if you put aside all the amazing things you can do with their RTX GPUs, like virtual green screens and AI-powered noise canceling, their NVENC encoder (NVidia ENCoder) was designed for content creators. Nvidia Streaming Settings For New Nvenc Quality Preset Max Q To Turn 2 Pass Encoding On High Profile Lookahead Off Psycho On B Frames 2. Obs Restreamer. you have already implied -2pass. Run two single passes manually, omitting -2pass and -pass switches, but switching -preset between slow and medium, and compare those (including runtime). If it's not handling the 2 pass process internally then the files should be 关于nvenc的HE..以前没怎么弄过H.265编码 现在因为一些原因不得不接触些 正好也换了16系的显卡 nvenc编码HEVC的参数也基本都可以用了 故于此请教几个问题1. 硬件NVIDIA：ffmpeg.exe -i input.avi -c:v hevc_nvenc -preset:v fast output.mp4 软件 ：ffmpeg.exe -i input.a ffmpeg 压缩H265 Windows 硬件编码 - 月渊 - 博客园 首页 6:23 – Keyframe Interval, Presets, & Profile (Main vs High) 7:05 – x264’s CPU Usage Preset (ultrafast, veryfast, etc.) 9:02 – Side by Side Comparison: x264 vs NVENC on Grand Theft Auto V 11:17 – Benchmarks CPU Usage, GPU Usage, and Framerate 13:23 – What about Quick Sync Video? QuickSync H.264 vs x264 side by side & benchmarks
File nvenc-pycuda-with-kernel3.patch, 26.8 KB (added by Antoine Martin, 7 years ago) use (py)cuda to copy from input buffer (already in NV12 format) to output buffer (nvenc buffer)
Jun 26, 2020 · Handbrake also has different presets between the CPU (x265) and GPU (NVENC H.265) encoders. From this perspective, you can’t, really, make an apples to apples comparison for the quality to file size comparison. When I use average bitrate of 4000 rather than Constant Quality at RF 20, I get similar size and quality to CPU (x265) encoding.
SUCCESS Get Preset Config Query HW Encoder Caps Modify NVENC Preset Settings Initialize Encoder Release Encoder INITIALIZING ENCODER OPENING ENCODE SESSION 1 2 QUERY ENCODER ATTRIBUTES 3 QUERY ENCODER PRESETS 4 INITIALIZING ENCODER NVENC SW SDK INITIALIZING ENCODER NvEncInitializeEncoder API. Parameters used for Initializing the Encoder NV_ENC ...
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FFmpeg 4.4 has different Presets and Tuning values, which by default already reach the quality described here, requiring no additional custom configuration. Setting up NVENC (for Streaming) With modern OBS Studio, you have two options: NVENC NVENC H.264 (new) or StreamFXs NVIDIA NVENC H264/AVC (via FFmpeg) .
Oct 17, 2018 · - Added iAvoe's x264 presets Notes For using NVENC encoders driver version 436.15 or newer is required. mecro 31 may 2020 21:48 . MegaAdicto!!! 3.335 mensajes desde dic 2002
Well, you're not alone. I just compiled 4.1-1255 and I see the nvenc options in the Stream Profiles -> Video codec preset dropdown. I tried to use the nvenc options but the video encoder just gave up and only audio was enabled on the transport stream. Here's some debug...
Oct 08, 2019 · A codec is the logic to encoding or decoding a media stream, there are many different types with popular ones being H.264, HEVC (H.265) and MPEG-4.. Codecs are different to containers like MP4, MKV and MOV because a codec manages the bitrate, resolution and frames whilst the container organizes and returns the data as sequence.
FFmpeg 4.4 has different Presets and Tuning values, which by default already reach the quality described here, requiring no additional custom configuration. Setting up NVENC (for Streaming) With modern OBS Studio, you have two options: NVENC NVENC H.264 (new) or StreamFXs NVIDIA NVENC H264/AVC (via FFmpeg) . AFAIK NVENC is similar to the very fast preset in x264. Could be the latest version (on RTX 3000 GPUs) is similar to the fast preset, but I could be wrong; I know they made marked improvements to their encoder this generation, but previous 2-3 have been similar to very fast if not a bit worse looking. For the llhp and llhq presets, as well as other presets in use, you can also override the in-built rate-control methods by passing the -rc:v arguments as exposed by the encoder options. For example, with constant bit-rate encoding, you can specify -rc:v cbr (which is significantly faster than the cbr_ld_hq rate control method, bringing an ... Handbrake also has different presets between the CPU (x265) and GPU (NVENC H.265) encoders. From this perspective, you can't, really, make an apples to apples comparison for the quality to file size comparison. When I use average bitrate of 4000 rather than Constant Quality at RF 20, I get similar size and quality to CPU (x265) encoding.