avi To force the frame rate of the input file (valid for raw formats only) to 1 fps and the frame rate of the output file to 24 fps: ffmpeg -r 1 -i input. 265 HEVC) finalized on July 6. FFmpeg supports following functionality accelerated by video hardware on NVIDIA GPUs: Hardware-accelerated encoding of H. ffmpeg hevc hdr Share Improve this question edited Jan 30, 2018 at 15:29 genpfault. >>For an ideal HDR display, this would simply be the PQ curve's exact >definition (i. avi To force the frame rate of the input file (valid for raw formats only) to 1 fps and the frame rate of the output file to 24 fps: ffmpeg -r 1 -i input. mp4 And this should see you through. Some options can be changed during the operation of the filter using a command. 1 -pix_fmt p010le -color_primaries bt2020 -colorspace bt2020nc -color_trc smpte2084 out. Blog post explanation. -c:v h264. 5/1 maps mid-range brightness (0. FFMPEG 4k HDR to 1080p SDR Hardware Tonemap Conversion ( OpenCL)Helpful? Please support me on Patreon: https://www. Then, add your HDR video into F:\Torrents2\ffmpeg\bin\ and rename it as "video-input. Jan 06, 2017 · This is likely an FFmpeg issue. hevc -o metadata. Usage Execute in a terminal (bash). com/roelvandepaarWith thanks & pr. I found this code to convert the 10-bit "HDR" yuv420p10le colorspace down to the standard yuv420p 8-bit colorspace from the colourspace blog so props to them for having a handy guide just for this. ffmpeg -i input. com/roelvandepaarWith thanks & pr. 1@High Codec ID : V_MPEGH/ISO/HEVC Duration : 2 h 15 min Bit rate : 44. Transcoding HEVC 4K HDR using ffmpeg and vaapi. ffmpeg -i infile -c:a copy -c:v libx265 -vb 20MB -pix_fmt yuv420p10le -x265-params hdr10=1 -preset slow outfile -pix_fmt yuv420p10le for 10bit video. You need to tag the file as PQ function for it to be HDR (-color_trc smpte2084). Sep 20, 2021 · For common HDR formats (including HDR10) you need bt2020nc. This ( -crf 12) will give you around 18000-28000k video bitrate for a 4K video. avi -r 24 output. I know how to convert 10 bit HDR video to 8 bit SDR with FFmpeg, but i wonder if FFmpeg can do 10bit HDR to 10bit SDR conversion. CLI apps that I have tested: ffmpeg -i file. html#eq Preview:. Oct 03, 2020 · 1 Answer. FFmpeg can be used along with VP9 to both (1) compress HDR sources to Standard Dynamic Range (SDR) outputs or (2) to repackage an HDR source . 电视支持hdr的意思是芯片支持解码hdr10，实际的显示效果根本达不到标准。 显示器比较多支持的是DisplayHDR的标准，大部分都是HDR 400，亮度400。 最近几年，小米，三. 25 wrz 2019. 264, HEVC, VP9, VP8, MPEG2, MPEG4*, and AV1 Granular control over encoding settings such as encoding preset, rate control and other video quality parameters. 976 (24000/1001) FPS Color space : YUV. --hdr-opt, --no-hdr-opt¶ Add luma and chroma offsets for HDR/WCG content. 25 wrz 2019. Also you may wanna use WCG (-color_primaries bt2020 and if you use YCbCr use dervied from primaries matrix with -colorspace bt2020nc). ffmpeg hdr libx265 vaapi Share Follow edited Jan 19, 2020 at 21:05 asked Jan 19, 2020 at 19:52 P. Full specs show much higher Encode / Decode complexity & processing requirements; Hardware (GPU) support is still likely 4+ years off but the protocol was submitted in time for consideration with Zen 4 design. I don't have a quick select for it just becasue mp4 limits the types of audio you can have by a lot, and there is no. 1。 2. Actually, ffmpeg's libx264 driver always insists on feeding x264 exactly the bit-depth it's compiled for. Comparing straight rips from bluray with hand rolled remuxes using the above command line I notice two fundamental differences. ffmpeg -i input. The second-gen Sonos Beam and other Sonos speakers are on sale at Best Buy. json inject Interleaves HDR10+ metadata NAL units before slices in an HEVC encoded bitstream. com/roelvandepaarWith thanks & pr. ec3) Create a json file with HDR10+ metadata from your hevc file hdr10plus_tool extract filename. convert (re. Search this website. arctic cat atv idles but dies with throttle. 之前蓝光盘电影多是AVC 1080p 8bit SDR格式视频，近两年4K电影流行，下载的蓝光电影多是HEVC 2160p 10bit HDR视频格式。ffprobe查看有如下属性：# . 0 Brainiarc7 • 3 yr. Also you may wanna. The video encoder on GPUs has no notion of HDR or transfer characteristics (smpte2084). Description A small script that uses ffmpeg to convert CinemaPro video material produced by the Sony Xperia 1 & 5 aswell as 1 II & 5 II from HDR to SDR. h says: /* x264_bit_depth: * Specifies the number of bits per pixel that x264 uses. avi To force the frame rate of the input file (valid for raw formats only) to 1 fps and the frame rate of the output file to 24 fps: ffmpeg -r 1 -i input. mp4 \ -c:v libx265 -preset medium -crf 28 -pix_fmt yuv420p10le \ -c:a aac -b:a 128k \ output_10bit. Yes a mp4 should be able to handle that information just fine. To create a VCD, you can run the following command:. How to use Clone the repo and move the files to convert in the same folder. You need to tag the file as PQ function for it to be HDR (-color_trc smpte2084). Transcoding HEVC 4K HDR using ffmpeg and vaapi. mp4 -pix_fmt rgb24 '%05d. This ( -crf 12) will give you around 18000-28000k video bitrate for a 4K video. 2 Answers Sorted by: 2 As you will observe using ffprobe on a HEVC 10-bit video file, the video format will most likely be yuv420l10le. Example: hdr10plus_tool remove video. The video encoder on GPUs has no notion of HDR or transfer characteristics (smpte2084). Asked 2 years, 11 months ago. webm -c:v libx265 -x265-params "level=5. Enabled automatically when :option`–master-display` or :option`–max-cll` is specified. See ffmpeg -filters to view which filters have timeline support. Also you may wanna. I found this code to convert the 10-bit "HDR" yuv420p10le colorspace down to the standard yuv420p 8-bit colorspace from the colourspace blog so props to them for having a handy guide just for this. 修复下载超1小时视频闪退问题 7. * the processing window is present (for value of 1). 709 even if I specify smpte2084 in the. Photo by Chris Welch / The Verge. See ffmpeg -filters to view which filters have timeline support. ffmpeg conversion color hdr Share Improve this question Follow asked Sep 14, 2018 at 7:16 chesschi 121 2 Add a comment 1 Answer Sorted by: 2 The ProRes input will have YUV encoding, not RGB. Summary: ffmpeg destroys HDR information when encoding → ffmpeg destroys HDR metadata when encoding. 支持自定义 ffmpeg 合并命令 4. Usage Execute in a terminal (bash). This ffmpeg can be distributed to other machines of similar architecture, and simply executed. 0 Brainiarc7 • 3 yr. One may add to ffmpeg the option -r 30 To reduce the frame rate from 60fps to 30fps (so it can be played by iTunes in the Apple TV 4K). Nov 15, 2020 · 1 -vcodec is deprecated, use -c:v, same about -acodec and -scodec. H. ffmpeg -i in. Asked 2 years, 11 months ago. As far as I am aware, FFmpeg 10-bit hardware decode-encode (i. It works on all YouTube HDR videos (downloaded using youtube-dl -f 337+bestaudio ). . mp4 -map 0 -c:v libx265 -x265-params hdr-opt=1” but that doesn’t seem to do cropping. Hybrid has been using NVEncC itself to add HDR metadata instead of nvhsvp since '2018. avi -r 24 output. You can however save as RGB 10-bit (with padding), ffmpeg -i in. "ffmpeg HDR metadata" is the among the top 4 (!) suggestions in Google if you type "ffmpeg HDR". ffmpeg hevc hdr Share Improve this question edited Jan 30, 2018 at 15:29 genpfault. exe -i input. It does not increase the display’s capabilities and not all HDR displays have the same capabilities. Features Select ffmpeg default presets Add, edit, save your own preset Multiple file conversion. Also you may wanna. Share Follow edited Nov 15, 2021 at 1:09 answered Nov 13, 2021 at 21:44 palopezv 123 7 Add a comment -1. post12-g92c7920 | about patchwork patch tracking system | version v3. patchwork patch tracking system | version v3. FFmpeg command-line settings to enable VP9 Profile 2 and HDR EOTFs Your FFmpeg will need to have been built with 10-bit (or even 12-bit) support. 9 Mb/s Width : 3 840 pixels Height : 2. Handbrake does not use FFmpeg. It indicates, "Click to perform a search". HDR enables better use of displays that have high brightness , contrast, and color capabilities. eac3 (then rename it to filename. In your guide you gave an example of ffmpeg command to convert a video stream “ffmpeg-i g:\my-video. mp4 -vf zscale=t=linear:npl=100,format=gbrpf32le,zscale=p=bt709,tonemap=tonemap=hable:desat=0,zscale=t=bt709:m=bt709:r=tv,format=yuv420p -c:v hevc -crf 18 -preset slower sdr. This ffmpeg can be distributed to other machines of similar architecture, and simply executed. Enabled automatically when :option`–master-display` or :option`–max-cll` is specified. sh [-yt] [-ns]. Your FFmpeg will need to have been built with 10-bit (or even 12-bit) support. ffmpeg -i INPUT. ffmpeg -i filename. Using FFmpeg to do software 1:1 transcode is simple: ffmpeg -i input. 1 Answer Sorted by: 6 This will require re-encoding with thus some loss of quality but a recent copy of FFmpeg will allow you to convert to 8bit hevc from 10bit quite easily. description: FFmpeg git repo: last change: Thu, 10 Nov 2022 20:14:23 +0000 (21:14 +0100): URL: https://git. mov -pix_fmt gbrp10be -f rawvideo raw. mov -pix_fmt gbrp10be -f rawvideo raw. ffmpeg -i "Sample_HDR. CLI apps that I have tested: ffmpeg -i file. You still should present the file on HDR display since it will have PQ transfer (PQ is why you saw the gray image originally) and BT. Nov 15, 2020 · 1 -vcodec is deprecated, use -c:v, same about -acodec and -scodec. You still should present the file on HDR display since it will have PQ transfer (PQ is why you saw the gray image originally) and BT. The converted video now plays fine, with HDR BT. ffmpeg premiere video-quality software-recommendation hdr or ask your own question. avi To force the frame rate of the output file to 24 fps: ffmpeg -i input. ffprobe -v quiet -show_format -show_streams file. with -pix_fmt yuv420p: Incompatible pixel format 'yuv420p' for codec 'libx264', auto-selecting format 'yuv420p10le' x264. exe-i input. 9 Mb/s Width : 3 840 pixels Height : 2. Usage Execute in a terminal (bash). 100 libavcodec 57. HDR is only the new transfer function, PQ or HLG. Using FFmpeg to do software 1:1 transcode is simple: ffmpeg -i input. So, if ProRes is yuv422p10le in limited / studio range, the 10-bit luma value for a white pixel will be 940 or 1110101100 but will be stored as 16 bits in the file: 1110110000000011 where the order is little-endian. >>For an ideal HDR display, this would simply be the PQ curve's exact >definition (i. Usage Execute in a terminal (bash). Then, add your HDR video into F:\Torrents2\ffmpeg\bin\ and rename it as "video-input. [FFmpeg-devel,8/8] RFC: editing HDR properties in H. mov -pix_fmt gbrp10be -f rawvideo raw. It does not increase the display's capabilities and not all HDR displays have the same capabilities. 9 Mb/s Width : 3 840 pixels Height : 2. 4 cze 2020. This (-crf 12) will give you around 18000-28000k video bitrate for a 4K video. Choppy playback easy fix with FFmpeg and DNxHD/DNxHR in Material Exchange Format (MXF). When HDR > > >> and SDR surfaces like a video buffer and a subtitle buffer are presented > > >> together, the composition would take place as follows: > > >> - If the display does not support HDR metadata: > > >> in-coming HDR surfaces would be tone mapped using opengl to SDR > and > > >> blended with the other SDR surfaces. m2v -r 24 output. avi To force the frame rate of the input file (valid for raw formats only) to 1 fps and the frame rate of the output file to 24 fps: ffmpeg -r 1 -i input. 2020 primaries. mp4 \ -c:v libx265 -preset medium -crf 28 -pix_fmt yuv420p10le \ -c:a aac -b:a 128k \ output_10bit. 电视支持hdr的意思是芯片支持解码hdr10，实际的显示效果根本达不到标准。 显示器比较多支持的是DisplayHDR的标准，大部分都是HDR 400，亮度400。 最近几年，小米，三. Commercial name : HDR10 Format profile : Main 10@L5. Choppy playback easy fix with FFmpeg and DNxHD/DNxHR in Material Exchange Format (MXF). As for current discussion I would like to add the following updates:. 2020-ncl matrix is removed correctly to R'G'B'). 77 bitrate= -0. ffmpeg -i movie. Fix poor performance in H. 6 Changing options at runtime with a command. I try to dump HDR metadata (mastering display color primaries & luminance) of a HDR video using;. avi To force the frame rate of the output file to 24 fps: ffmpeg -i input. exe -i input. Conversion,” available on the BBC R&D HDR web page, . HDR format : Dolby Vision, Version 1. ffmpeg conversion color hdr Share Improve this question Follow asked Sep 14, 2018 at 7:16 chesschi 121 2 Add a comment 1 Answer Sorted by: 2 The ProRes input will have YUV encoding, not RGB. mkv -c:v libx265 -b:v 500k -x265-params pass=2. With the following command, the output looks very flat. It simply does normal 10-bit 4:2:0 encoding. As far as I am aware, FFmpeg 10-bit hardware decode-encode (i. So I usually use Handbrake to encode all of my videos, but things have changed now that I've started collecting 4k movies. The Mastering Display consists of static Maximum Frame Average Light Level (MaxFALL) and Maximum Content Light Level (MaxCLL). 6 Changing options at runtime with a command. These options are marked ’T’ on the output of ffmpeg-h filter=<name of filter>. It simply does normal 10-bit 4:2:0 encoding. Create public & corporate wikis; Collaborate to build & share knowledge; Update & manage pages in a click; Customize your wiki, your way. Message ID:. CLI apps that I have tested: ffmpeg -i file. The value shall be in the range of 0 to 1, inclusive. Thankfully the newest FFmpeg builds for Windows now support HDR10+ metadata files by default, so this process has become a lot easier. transcode) pipeline is not fully functional yet. I tested with the following 10bit sample: andrew@illium~$ mediainfo --Inform="Video;%Format%:%BitDepth% bits" 10_bit. and it returned: ffmpeg -i video. exe -i input. Reported by: Helg1980: Owned by: Priority: normal: Component: ffmpeg: Version: unspecified: Keywords: Cc: Blocked By: Blocking: Reproduced by developer:. One may add to ffmpeg the option -r 30 To reduce the frame rate from 60fps to 30fps (so it can be played by iTunes in the Apple TV 4K). Live Transcoder for Nimble Streamer allows using custom builds of FFmpeg to utilize any. In your guide you gave an example of ffmpeg command to convert a video stream “ffmpeg-i g:\my-video. Since Hybrid dropped support for 'FFmpeg (NVEnc)' on Windows systems with Hybrid version '2020. The second-gen Sonos Beam and other Sonos speakers are on sale at Best Buy. Default disabled. This ( -crf 12) will give you around 18000-28000k video bitrate for a 4K video. avi -b:v 64k -bufsize 64k output. 2020 color primaries. 引入rxffmpeg，改用ffmpeg来合并视频。 3. 12 -i Sony_4K_HDR_Camp. 修复下载超1小时视频闪退问题 7. Removes HDR10+ metadata NAL units (or SEI messages) in an HEVC encoded bitstream. With the Intel Arc Graphics, AMD Radeon RX 7000 series, and NVIDIA GeForce RTX 40 series, GPU-accelerated AV1 encoding is now widely available for this royalty-free video codec that is becoming. mkv -c:v libx265 -b:v 500k -x265-params pass=2. ffmpeg HDR signaling. As far as I am aware, FFmpeg 10-bit hardware decode-encode (i. The name of the command is the name of the option and the argument is. HDR enables better use of displays that have high brightness , contrast, and color capabilities. json inject Interleaves HDR10+ metadata NAL units before slices in an HEVC encoded bitstream. mp4 -vf zscale=matrixin=2020_ncl,format=gbrp16le -an -frames:v 1 out_zscale. Press Windows button+R to open the "Run" box. A magnifying glass. Cu Selur. Removes HDR10+ metadata NAL units (or SEI messages) in an HEVC encoded bitstream. So, if ProRes is yuv422p10le in limited / studio range, the 10-bit luma value for a white pixel will be 940 or 1110101100 but will be stored as 16 bits in the file: 1110110000000011 where the order is little-endian. ffmpeg -i input. Usage Execute in a terminal (bash). The color matrix is used to convert between RGB values (which are used to display . Toggle navigation Patchwork FFmpeg Patches. dampluos
It automatically add a padding if necessary. . Ffmpeg hdr
Then run the script. mkv -c:v libx265 -preset ultrafast -x265-params lossless=1 OUTPUT. 2020 primaries. Adobe Premiere, Avid Media Composer, and Davinci Resolve can experience. mkv - Does not show HDR metadata. 支持自定义 ffmpeg 合并命令 4. You can however save as RGB 10-bit (with padding), ffmpeg -i in. "-i <infile>" <infile> must be replace with the full file name of the video in input "\-c:a copy" copies the audio "-c:v libx265" tells ffmpeg to convert to HEVC "-tag:v hvc1" seems mandatory for Apple devices using quickTime and the like "-crf 22" is the compression. I've been able to play videos from x265. H. A magnifying glass. For the documentation of the undocumented generic options, see the Codec Options chapter. Feb 10, 2018 · 1. Hybrid has been using NVEncC itself to add HDR metadata. json - Extract without validating: hdr10plus_tool --skip-validation extract video. Oct 03, 2020 · 1 Answer. Since Hybrid dropped support for 'FFmpeg (NVEnc)' on Windows systems with Hybrid version '2020. mkv HEVC:10 bits This sample was re-encoded as follows:. Check the final look on your HDR monitor (if you graphic card allows you to do so) Render a specific EXR file sequence (or. ffmpeg command to convert hdr video to SDR: ffmpeg -i video. Then run the script. Live Transcoder for Nimble Streamer allows using custom builds of FFmpeg to utilize any. I need to validate if a video file (HEVC encoded) is or is not an HDR video. ffprobe -v quiet -show_format -show_streams file. Nov 09, 2022 · ffmpeg -i input. patchwork patch tracking system | version v3. Build with multiple processes to increase build speed and suppress excessive output: make -j -s. First things first, this is NOT a guide for Dolby Vision or HDR10. My 3060 RTX card can chew thru it in probably an hour. mkvinfo file. You can set a target type as follows: add -target type; type can of the following be vcd, svcd, dvd, dv, pal-vcd or ntsc-svcd on the command line. Viewed 4k times. exe -i input. Your FFmpeg will need to have been built with 10-bit (or even 12-bit) support. 06, BL+EL+RPU, Blu-ray compatible / SMPTE ST 2086, HDR10 compatible Codec ID : V_MPEGH/ISO/HEVC Duration : 2 h 27 min Bit rate : 77. mov with DNxHD/Prores 10 bits presets) at the end of your compositing with the correct Colorspace (REC2020 ST2084 1000nits). FFmpeg command-line settings to enable VP9 Profile 2 and HDR EOTFs. You can encode a portion of a video with something like: ffmpeg -ss 01:00:00 -i '\path\to\input. Build with multiple processes to increase build speed and suppress excessive output: make -j -s. It will give a warning that it is unsupported but you can ignore it. An installation of FFmpeg compiled against this version of x265 can produce a decent 8bit encode with the following command: ffmpeg -i input. json create a new json file (just a text file, with a 'json' file extension), with these contents:. 20 wrz 2021. This tool suite consists of the basics needed to generate 3D LUTs that will convert video streams from Perceptual Quantizer (PQ) HDR into Hybrid-Log Gamma (HLG) HDR. You may use our build script to make your own, or follow the guidance on the FFmpeg site. ago HDR signalling is not implemented in FFmpeg's NVENC encoders, yet. The color matrix is used to convert between RGB values (which are used to display . From what I understand, even though Handbrake has 10bit options, it doesn't fully support HDR content and will lose that information (someone please correct me if I'm wrong on that). mp4 \ -c:v libx265 -preset medium -crf 28 -pix_fmt yuv420p10le \ -c:a aac -b:a 128k \ output_10bit. hevc -o Metadata. html#eq Preview:. You need to tag the file as PQ function for it to be HDR (-color_trc smpte2084). High Dynamic Range (HDR) video is a maturing technology. A magnifying glass. It helped me compare one frame from the DNxHD video. This is my second time writing about . Example: hdr10plus_tool remove video. mp4 -map 0 -c:v libx265 -x265-params hdr-opt=1” but that doesn’t seem to do cropping. How to encode a 4K HDR movie using ffmpeg while maintaining selected auio tracks intact from source. This is my second time writing about . I googled for a couple of hours, found a plethora of semi-conflicting information, and am still not much clearer on what FFMPEG commandline switches to use to. --hdr-opt, --no-hdr-opt¶ Add luma and chroma offsets for HDR/WCG content. This means, no live transcoding --> streaming of HDR clips through Jellyfin - and none of the other fun realtime imaging one wants to do on a when one isn't plugged into a loud ASIC more power-hungry than my refrigerator. It is the latest stable FFmpeg release from the 3. hevc -o hdr10plus_removed_output. mkvinfo file. Fast, simple and clean video downloader. I don't have a quick select for it just becasue mp4 limits the types of audio you can have by a lot, and there is no. Somehow, VLC is the only program that can display the HDR metadata, but I need it as CLI output, not GUI. HDR is only the new transfer function, PQ or HLG. Feb 10, 2018 · 1. Yes, 8 bit file tagged as PQ will be played as HDR. mkv - Does not show HDR metadata. FFmpeg / libavutil / hdr_dynamic_metadata. This ffmpeg can be distributed to other machines of similar architecture, and simply executed. Like I wrote before both FFmpeg, Handbrake and NVEncC all use the same libaries, it's just a question of which option they support and how. Ffmpeg hdr. Fast, simple and clean video downloader. "-i <infile>" <infile> must be replace with the full file name of the video in input "\-c:a copy" copies the audio "-c:v libx265" tells ffmpeg to convert to HEVC "-tag:v hvc1" seems mandatory for Apple devices using quickTime and the like "-crf 22" is the compression. Jul 20, 2021 · High-dynamic-range ( HDR) is a technology for the way luminance and colors are represented in videos and images. The HDR metadata will get stripped out by the encoder if it isn't defined so there's nothing more you need to do after tonemapping it. deschloroetizolam for sale. HDR content will thus look different . --hdr-opt, --no-hdr-opt¶ Add luma and chroma offsets for HDR/WCG content. Where can I get cropping info of a particular video file and what params to use in ffmpeg to remove black bars?. This is my second time writing about . html#eq Preview:. It simply does normal 10-bit 4:2:0 encoding. 976 (24000/1001) FPS Color space : YUV. The video encoder on GPUs has no notion of HDR or transfer characteristics (smpte2084). mp4 -c copy filename. Jun 29, 2020 · Thankfully the newest FFmpeg builds for Windows now support HDR10+ metadata files by default, so this process has become a lot easier. arctic cat atv idles but dies with throttle. mp4 When I run that I get an error: [AVFilterGraph @ 0x1c25380] No such filter: 'zscale'14:32:22. mkv -c:v libx265 -b:v 500k -x265-params pass=2. These can be in any order. mkv -map 0:v:0 -c copy -vbsf hevc_mp4toannexb -f hevc - | hdr10plus_tool remove -. Some options can be changed during the operation of the filter using a command. So that means you need to look into that, PQ is SMPTE 2084 and HLG is ARIB STD-B67. I'm on windows 10 using ffmpeg 4. FFmpeg GUI, by Create Software. 下载页面item改用网络加载（可以看到节日效果） 5. I usually use. 1 as well 3. Use format=yuv420p10le in your usual ffmpeg incantation for 10-bit output. ffmpeg hevc hdr Share Improve this question Follow edited Jan 30, 2018 at 15:29. But in practice, the display will >almost surely not be capable of displaying up to 10,000 nits, so it will >implement a tone mapping operator of some kind (even if it's as simple. . v2k lawsuit settlement, swf decompiler online, cojiendo con hijos, videos of lap dancing, rico strong creampie, topeka pets craigslist, junior casual jobs near me, gritonas porn, anitta nudes, mom hot por, megu fuj, water damage xactimate cheat sheet co8rr