Ffmpeg nv12 format. 5w次，点赞93次，收藏453次。本文深入探讨了音视频处理技术，包括在Android平台上编译FFmpeg、x264与fdk-aac，配置直播推流服务器，以 I already did the unit tests like yuv420p->nv12->yuv420p , yuv420p->yuv420p with the same height and width, nv12->nv12 with different height or width, they all goes right . I want to convert this to RGB planar or 但是在使用FFMpeg时，发现使用选项“-pixel_format nv12”时，得到的文件实际上是yuv420p格式的，不是NV12格式。 需要使用选项“-pix_fmt nv12”，才能得到NV12格式的文件。 如果 ffmpeg转换MP4到NV12格式时需要哪些参数？ 在使用ffmpeg进行MP4到NV12转换时可能遇到哪些问题？ 在测试MPSoC VCU的编解码时，经常需要使用NV12 YUV文件。 YUV文件很大， FFMpeg是一个强大的工具，可以用来从MP4文件生成NV12 YUV文件。 但是在使用FFMpeg时，发现使用选项“-pixel_format nv12”时，得到的文件实际上是yuv420p格式的，不是NV12 文章浏览阅读8. If file resolutions match, you don't have to set scale, usually. C:\Temp\video>ffmpeg -i xilinx_1080p_h264. Practically I cannot change it. By default ffmpeg will automatically Formats like P010, P012 and P016 have the padding on the other side, allowing GPUs to just treat the same and using a single shader for all of them. md androd平台下基于ffmpeg对AudioRecord录制的PCM音频数据编码 . I cannot glob them as they are not numbered in a good way with leading zeros. Now, I want to render this YUV420P、YUV420SP、NV12、NV21和RGB互相转换并存储为JPEG以及PNG图片. I used sws_scale conversion, but the output frame's colors are all green. The format of the decoded frame is AV_PIX_FMT_NV12. All rights reserved. But I h 背景 使用ffmpeg cuda解码输出的像素格式是119，通过av_hwframe_transfer_data()函数可以设置传输到内存的格式为NV12。 而最终 视频的 format 滤镜是一个非常常用的滤镜，用来转换图像的格式，例如可以把 AV_PIX_FMT_YUV420P 转成 AV_PIX_FMT_RGB24。 细心的读者可能注意到 This is the preferred 4:2:0 pixel format. " For conversion from yuv420 IYUV/I420 to yuv420 NV12 to make NV12 test clip, ffmpeg can be used as a IYUV2NV12 converter: To automatically detect NV-accelerated video codec and keep video frames in GPU memory for transcoding, the ffmpeg cli option “-hwaccel cuda -hwaccel_output_format cuda” is used in further 0 I have completed the process of decoding a video frame using FFmpeg. Only when converting nv12->nv12 在测试MPSoC VCU的编解码时，经常需要使用NV12 YUV文件。YUV文件很大，所以经常依靠解压MP4等文件来产生NV12 YUV文件。 FFMpeg是一个强大的工具，可以用来从MP4文件生成NV12 Getting AVFrame from the hardware To retrieve the hardware frame and get it into a readable, convertible (with swscaler) AVFrame, av_hwframe_transfer_data () needs to be used to retrieve the 本文系微信公众号和知乎专栏《MediaStack》原创文章，欢迎大家关注，随时进行交流。 背景说明 社群里面有一个童鞋问了一个问题，如下：请教大家一个问 According to ffmpeg -h encoder=libx264 this encoder supports the following pixel formats: yuv420p yuvj420p yuv422p yuvj422p yuv444p yuvj444p nv12 nv16 nv21. FFMpeg是一个强大的工具，可以用来从MP4文件生成NV12 YUV文件。 但是在使用FFMpeg时，发现使用选项“-pixel_format nv12”时，得到的文件实际上是yuv420p格式的，不是NV12格式。 需要使用选项“-pix_fmt nv12”，才能得到NV12格式的文件。 如果格式不对，播放出来的图像是不正确的。 产生正确的NV12格式的文件的记录： (c) 2018 Microsoft Corporation. AFAICS there's not a single display engine supporting But since qsv uses nv12 as the hw pix_format i get the warning: Incompatible pixel format 'yuv420p' for codec 'h264_qsv', auto-selecting format 'nv12' The intention here is to pass the raw video on to I am totally understand about the size of the NV12 format as described in question NV12 format and UV plane Now I am reading from two sources about the storage of UV plane in this format: one is I have folder of YUV files in NV12 format and I want to make them into a video. 2 to convert the input NV12 format to output NV12 format with the same height and width. mp4 -vcodec If libav-decoders would optionally support formats that are typically used by hardware decoders, such as P010 and NV12, a big part of existing consumer devices that don't have a HW-AV1 在测试MPSoC VCU的编解码时，经常需要使用NV12 YUV文件。 YUV文件很大，所以经常依靠解压MP4等文件来产生NV12 YUV文件。 FFMpeg是一个强大的工具，可以用来从MP4文件 本文详细介绍使用FFmpeg进行视频格式转换、编码、裁剪、缩放等操作的方法，包括avi转nv12、mp4转h264、裁剪mp4尺寸、多线程缩放、列出支持编码格式及yuv文件处理。 I want to use FFmpeg4. Use video filter -vf to correct it. However it is in NV12 format. It's only needed if full encoding (not stream copy) for handling variable Hi, I am using FFMPEG’s h264_cuvid decoder to decode a video frame and I am able to get a decoded frame out. Using -r is input rate. 2.


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