Yuv420p ffmpeg. Or at least the result is not the way I exp 2 . Now, I want to downscale it to 1920p and convert it to yuv420p, which is apparently the most compatible pixel format across different devices. FFmpeg 常见用法 1. yuv output. 5 動画を扱う機器は、映像の内部フォーマットとしてyuv420 semi planarを採用していることが多いと思います。 開発中にはそのフォーマットのデータを見たり、作成したりする場面があります。最初はこれを imagemagik を使ってやろうとしたのですがいまくいかず。 The "P" in the name means that the format is "planar" — simply meaning that the Y, U, and V components are in separate arrays. I'm trying to perform an algorithm to convert from yuvj420p to yuv420p. The overall format is not deprecated, having individual switches (yuv420p and yuvj420p) for limited and full-range colour spaces is deprecated and the warning is telling you to make sure you have specified the range so that it knows how to set up the colour space. The following output files are byte-to-byte identical: ffmpeg-20191101-53c21c2-win64-static\bin\ffmpeg. Dec 17, 2025 · yuv420p is the only pixel format supported by most web-based video players so unless you know for sure you need another pixel format, like in the case of HDR output or a professional workflow codec like ProRes, you should always add -pix_fmt yuv420p. My problem is how to implement RGB24toYUV420P() function, this function will convert RGB24 data from array rgb24Data to YUV420p and store into array dst_picture. Decoding to yuv format with : ffmpeg -i video. 86 fps, then you video can be either 358 frames long = 11. 将其它格式图片转换为 YUV420p ffmpeg -i input. m2ts -to 00:00:05 -c:v libx264 -pix_fmt yuv420p -crf 0 -an output_yuv420p. around it. If it's You can see what you are using by referring to the ffmpeg console output during encoding (yuv420p or similar for 8-bit, and yuv420p10le or similar for 10-bit). I need to convert these RGB frames to YUV420P format so that I can pass them to YUV420P encoder. 版本是ffmpeg4. FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. 264 视频帧解码为 YUV420P 格式。从 YUV420P 格式概述到 FFMPEG 解码流程，再到命令示例和实际应用，本文全面解读了这一重要技术。掌握这些概念对于音视频开发人员至关重要，可帮助他们更有效地处理视频流数据。. avi -c:v libx264 -preset slow -crf 18 -c:a copy -pix_fmt yuv420p output. The difference between both formats are the range values: yuvj420p [0-255], and yuv420p [16-239] I want to know how to adap Learn how to convert any video into YUV raw video using ffmpeg, play back a YUV file using ffplay, and to calculate the size of a YUV file by hand. ppm)," [in]haldclut",format=yuv420p,format=yuv444p,hu . org/doxygen/trunk/pixfmt_8h I've read frame which is encoded with H264, decoded it, and converted it to YUV420P and the data is stored in frameYUV420-&gt;data, (type of frame is AVFrame). data for ffmpeg encoder? Stream #0:0 (und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 407 kb/s, 29. 264, adding -vf format=yuv420p or -pix_fmt yuv420p will ensure compatibility so crappy players can decode the video. If -framerate option is omitted the default will input and output 25 frames per second. 基本命令结构 ffmpeg [global_options] -i input_file [input_options] output_file [output_options] 2. mp4 -vf format=yuv420p output. The h264 bitstream carries chroma always in the same way. yuv How do I to convert YUV420SP to YUV420P using ffmpeg sws_scale or another efficient method? When outputting H. mp4 or -c:v utvideo might be faster to encode. By default ffmpeg will automatically perform pixel format conversion to one of the supported formats: whichever most resembles the source pixel format. yuv If there is another way to do this without ffmpeg, I am open to any suggestions. 8-bit is more common among distributors. 46 - mp4 default -vf format=yuv444p,scale=640:640,"geq='p (X- ( (sin ( (T*5*0+ (0*15))+ (Y/H)* (PI*3. Example: See a generic list of supported pixel formats with ffmpeg -pix_fmts. dat（dat后缀名无所谓 The ffmpeg command below is being used to capture the desktop and create a resulting mp4. mp4 See a generic list of supported pixel formats with ffmpeg -pix_fmts. 2*200+100] hue. mp4 -codec copy -pix_fmt yuv420p -c:v libx264 -qp 0 -preset ultrafast -movflags +faststart output. 92 tbr, 11488 tbn (default) b) Input file generated by YUV420P uses the range 16 to 239 to describe luminance and chroma values, so values from 0 to 16 get mapped to the same output level, as do values 239-255. My goal is to achieve perceptually lossless videos, with the smallest file size I can reasonably achieve. 264 -vcodec tells it which codec to use. mp4 Video bash convert ffmpeg yuv420 yuv444 Next post How to convert a video stream with "yuv420p (tv, bt709, progressive)" attribute to "yuv420p (progressive)"? I'm concating videos while stream copying and for that I need to keep all the codec attributes the same. e. mp4 -f rawvideo -vcodec rawvideo -pix_fmt yuv420p -s 1920x1080 -r 25 rawvideo. Jun 22, 2025 · You may need to use -vf format=yuv420p (or the alias -pix_fmt yuv420p) for your output to work in QuickTime and most other players. nut ffmpeg-20191101-53c21c2 -format yuv420p: Ensures broader compatibility with media players. 610)))* (-15*4)),Y- ( (sin ( (T*5*0+ (0*15))+ (X/W Stream #0:0 (und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 407 kb/s, 29. Note the yuv420p(tv, progressive) in the last line. The output should be a similar quality as the input and will hopefully be a more manageable size. However, when I list the supported encoder settings using ffmpeg -h encoder=hevc_nvenc (output of command pasted below), even though it supports main10, no 10-bit pixel format is supported: Supported pixel formats: yuv420p nv12 p010le yuv444p p016le yuv444p16le bgr0 rgb0 cuda d3d11. audio and video streams. Apr 25, 2015 · ffmpeg -y -r 25. YUV420P_Player using ffmpeg. After you are done in Adobe Premiere, you can convert it back to a YUV file by inverting allmost all parameters. 4 - avi mov -vf movie=$ (magick hald:6 -modulate 100,100,% [fx:0. 3（高几个版本或者低几个版本都可以） 结果 :把H264转成yuv420p使用的H264文件是D:/videos/264. See which pixel formats are supported by a specific encoder, such as ffmpeg -h encoder=libx264. Example: ffmpeg -i input. Contribute to melchi45/YUV420P_Player development by creating an account on GitHub. avi -pix_fmt yuv420p -f avi -r 25 -s 1920x1080 output. mp4 video. It may contain raw YUV frames, but it's not a raw YUV file, it still has AVI headers etc. avi -pix_fmt yuv420p -f avi Hi, I have two questions about ffmpeg usage: 1) How to edit metadata in flv file by using ffmpeg, such as changing some key's value in flv file's metadata tag? 2) Normally, there are two streams in flv files, i. 本文深入探讨了如何使用 FFMPEG 将 H. ffmpeg can convert images to YUV420P, with the added bonus that many video streams are in that format already, or are easily converted to that format. I want to save that data into a file hwdownload is required since rawvideo only accept memory input. I'm using the FFMPEG Api in Rust to get RGB images from video files. When outputting H. mp4 -vf "format=yuv420p,scale=-1:1080" -vcodec libx264 -profile:v main -level:v 5. 979 or 360 = 12. 86 fps, 29. Update: checked with VLC and QuickTime Player, both handled it correctly and displayed white as 255. The problem here is that the source is an AVI file. 023 seconds. According to ffmpeg -h encoder=libx264 this encoder supports the following pixel formats: yuv420p yuvj420p yuv422p yuvj422p yuv444p yuvj444p nv12 nv16 nv21. Or if you have a fast enough storage setup, -c:v yuv4 (raw yuv420 planar). If you have an original source with full color information, ffmpeg will try to retain this information by choosing a matching output pixel format. man ffmpeg will help you learn more. using ffmpeg to extract audio from video files. mp4 Open in VLC or your favourite player and take a screenshot. ffmpeg -i input. 0 -f rawvideo -s 1920x1080 -pix_fmt uyvy422 -i input. How to install it Is it possible to create a raw YUV video from H264 encoded video using ffmpeg? I want to open the video with matlab and access Luma, Cb and Cr components frame by frame. yuv But the result is the same washed out color and "yuv420p10le -> yuv420p" conversion ffmpeg is basically a very fast video and audio converter. The webm vide ffmpeg -video_size 352x288 -pixel_format yuv420p -sample_fmt s16 -i inpput. ffmpeg log says the input stream is bmp and I specified the target as h264 yuv420p. webm: codec_name=vp9, pix_fmt=yuv420p もし -pix_fmt yuva420p を指定したのに落ちる場合は、エンコーダ側の制約やフォールバックを疑います。 [9] WebM を Web で配信するときの実装パターン Web 配信では、 <source> で複数 In ffmpeg yuv420p is called a pixel format. I believe the only difference between yuv j 420p and yuv420p is that the former uses "Full" 0-255 color value range (also known as "PC", "JPEG" color range), while the latter uses "Limited" color range Basic Examples Re-encode the video and stream copy the audio. I tried using the sws_scale but then the resulting frames lose color information and also suffer from scaling issues. yuv Of course, if you convert the YUV file to a Y4M file, you don’t have to include the descriptive information in FFmpeg or any analysis program. 1 -crf 20 -preset slow -tune animation -movflags +faststart -keyint_min 6 -g 6 -strict -2 -an {output_video}_scrub. Mar 26, 2023 · You may need to use -vf format=yuv420p (or the alias -pix_fmt yuv420p) for your output to work in QuickTime and most other players. Nov 5, 2018 · In ffmpeg yuv420p is called a pixel format. 97 tbr, 90k tbn, 59. The following output files are byte-to-byte identical: . YUV420P 编码264 选择YUV420P（YV12）是因为，这个数据我可以通过FFmpeg命令行解析文件得到，用来测试，而且planner格式的数据Y,V,U是连续且单独放置的，不会存在UV交叉；YUV一帧的数据量就是width*heigt*1. Extracts from "ffprobe -v info -show_entries stream=codec_name,codec_type -of default=noprint_wrappers=1:nokey=1": a) Input file generated by ffmpeg: Stream #0:0 [0x1] (eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p (tv, bt709, progressive), 1080x1920, 13290 kb/s, 29. I am trying to replicate as best I can the same encoding using ffmpeg, but I cannot workout how to get the progressive bit. If the frame rate really happens to be 29. You may need to put that in an mkv container, if ffmpeg can't mux that into an mp4. webm: codec_name=vp9, pix_fmt=yuva420p out_no_alpha. 012. 264 video. You can use the format filter, or the legacy -pix_fmt option, to set the pixel format. It’s pretty easy to verify: create a uniform white png and convert it to yuv420p h264 via ffmpeg: ffmpeg -i input. Comparing and contrasting colorspace, colormatrix, libswscale, and zscale colorspace and colormatrix can only convert YUV to YUV libswscale can convert between YUV and RGB colormatrix only supports 8bpc pixel formats colorspace supports 8bpc, 10bpc, and 12bpc colormatrix does not apply gamma and primaries correction (i. See which pixel formats are supported by a specific encoder, such as ffmpeg -h encoder The h264 bitstream carries chroma always in the same way. ffmpeg -f rawvideo -pix_fmt yuv420p -s:v 1920x1080 -r 23. yuv Then play yuv file: ffplay -framerate 60 -video_size 3840x2160 -pixel_format yuv420p10le -color_range tv -color_trc smpte2084 -color_primaries bt2020 -colorspace bt2020nc -i video. which exact color "red", "green", and "blue" each is) colorspace applies pixel format for full range changes from yuv420p to yuvj420p (which is strange, because developers of FFmpeg themselves discourage using this pixel format as an obsolete one), In ffmpeg, chroma subsampling is performed by setting the corresponding pixel format of the output video stream. exe -i 00006. ffmpeg reads from an arbitrary number of input “files” and writes to an arbitrary number of output “files”, which are specified by a plain output url. Thus we must set nv12 explicitly and then convert it to yuv420p in memory. 97, that would be 359 = 11. Have a look at the Code From Above blog post, which discusses this solution. See Frame rates for more info. mp4 -pixfmt yuv420p outputvideo. FFmpeg recognizes what's inside the mp4 container, so you don't need to provide parameters for the input. 本文介绍了如何使用 FFmpeg 提取和处理 YUV 和 RGB 像素格式的视频数据，包括提取命令及参数设置、播放方法以及 RGB 与 YUV 格式之间的转换。通过示例命令展示了不同分辨率和像素格式的操作流程，并提供了使用 ffplay 播放的设置方法。 Usage Example ffmpeg -i Kazam_screencast_00003. 976 -i raw_i420_1920_1080 -vcodec libx264 -f rawvideo output. I guess this is sort of two questions, but basically, is it even possible to convert yuvj420p to yuv420p, and more importantly, is it possible to do so in FFMPEG without any chroma or luma-shifting? Basically, it's my understanding that the reason yuvj420p is deprecated in FFMPEG is because there's a way to store the same data in yuv420p now. jpg -pi 文章浏览阅读4. Which one I should use to maximize compatibility with most brow ffmpeg -i inputvideo. But it's fairly generic C/C++, so compiling on Linux should be simple. t icf+ 10 0. Options may be set by specifying ffmpeg -s 1920x1080 -r 25 -pix_fmt yuv420p -i input. GitHub Gist: instantly share code, notes, and snippets. 989 seconds, or 359 frames long = 12. In addition each muxer or demuxer may support so-called private options, which are specific for that component. avi. It can grab from a live audio/video source. png -pix_fmt yuv420p movie. ppm; echo hue. I'am executing that command() ffmpeg -y -r 25. But https://ffmpeg. 94 tbc (default) If the actual frame rate is 29. While some videos work correct and I get the frames back as expected, some work not. See the colorspace and chroma-subsampling for more info. YUVJ420P uses the full range from 0 to 255. A few minor corrections and typo in your answer: #1 -vf scale=in_range=limited:out_range=full _ instead of : #2 Using yuv420p is also working when adding -color_range 2 and -movflags +write_colr this way ffmpeg does not output a depreciation warning #3 if input is limited range flagged as full range, then -bsf:v h264_metadata=video_full_range For Mac users, I've provided an Xcode 6 project; it assumes you've used MacPorts to install the FFmpeg libraries and headers in /opt/local ("sudo port install ffmpeg-devel"). These players only support the YUV planar color space with 4:2:0 chroma subsampling for H. 92 fps, 29. The current QSV implementation in ffmpeg doesn’t support yuv420p in hardware pipeline. How a decoder chooses to represent it is up to the implementation, and the ffmpeg h264 decoder choose yuv420p to do it. # ffmpeg command: ffmpeg -i {input_video}. mp4 This command will convert the input video to the yuv420p pixel format and save it as the output video in mp4 format. 2k次，点赞3次，收藏25次。本文详细介绍了如何使用ffmpeg处理YUV422和YUV420P之间的相互转换，包括YUV420空间大小计算，YUV422（YUYV）的分量和封包实现，YUV420的封包实现，以及分量实现。此外，还提供了从YUV420P到YUYV422和反向转换的具体步骤。 はじめまして、株式会社モルフォのシニアリサーチャーの佐藤真希です。いつもと趣向を変えて、今回から3回にわたり ffmpeg というツールの使い方を紹介したいと思います。 ffmpeg というのは、動画ファイルの形式を変換したり、動画に画像処理を施したりすることができる高性能なフリー 1 Description This document describes the supported formats (muxers and demuxers) provided by the libavformat library. It can also convert between arbitrary sample rates and resize video on the fly with a high quality polyphase filter. Now check with a color picker whether you have white as 255 or 235. mkv I am encoding png image sequences to both webm and mp4 formats using ffmpeg. 2 Format Options The libavformat library provides some generic global options, which can be set on all the muxers and demuxers. mp4 -c:v libx264 -pix_fmt yuv420p example. If it's I have to create video in mp4 format, and it seems that I can encode it with different pixel formats like yuv420p, yuv422p, yuvj422p. When I encode with ffmpeg on Ubuntu 18, the default encoder h264 (libx264) uses by default the pixel format yuvj420p. mp4 5 I have raw video in UYVY422 format and I want to convert it YUV420p. Yuta Hoshino (hsylife)さんによる記事 期待結果: out_alpha. rm4vm, 414ck, cmqr, lw5e, pecyxb, i8ub, eaibj, b7i6, aildrw, ha35,