系统环境： Jetson 型号：NVIDIA Jetson Orin NX (16GB ram) Jetpack ：5.1.3 输入文件格式： YUV文件：分辨率1920x1080，帧率25，像素格式YUV420P 问题描述： FFmpeg命令： ffmpeg -f rawvideo -pix_fmt yuv420p -s 1920x1080 -r 25 -i input.yuv -c:v h264_nvmpi -b:v 2400k -maxrate 2800k -bufsize 4800k -preset p4 -profile:v high -g 50 -rc vbr -f …

Hi, It looks like decoding is not fast enough so frames gets dropped. Encoding should be good. You may add prints in 01_video_encode sample to check how many frames are fed to encoder, and how many frames are encoded.

*** Please note that this reply is generated by LLM automatically *** The question appears to be about the performance of the Jetson Orin NX 16GB platform, specifically with regards to video encoding using FFmpeg and the H.264 codec. Here’s a comprehensive answer: Platform: The Jetson Orin NX 16GB…

ffmpeg -f rawvideo -pix_fmt yuv420p -s 1920x1080 -r 25 -i input.yuv -c:v h264_nvmpi -b:v 2400k -maxrate 2800k -bufsize 4800k -preset p4 -profile:v high -g 50 -rc vbr -f h264 output_vbr.h264 为什么使用这个命令进行硬件编码时，输出的h264文件播放的时候会出现掉帧，需要怎么解决呢？

Hi, You should use h264_nvv4l2dec on Jetson platforms. Please refer to Ffmpeg failed to decode with h264_nvv4l2dec, Segmentation fault! - #6 by DaneLLL About the Accelerated Computing category Accelerated Decode with ffmpeg — NVIDIA Jetson Linux Developer Guide 1 documentation

我解码是没有问题的，编码使用 h264_nvmpi 出现丢帧，要怎么排查呢？

Hi, Hardware video encoding is not enabled in ffmpeg. Please run 01_video_encode sample.

但是我用 01_video_encode 去编码YUV为H264还是出现了掉帧的情况，要怎么解决呢？

Hi, It’s unlikely that encoder drops the frames. Would suggest check if source YUV file is good.

我可以确定我用来编码的YUV文件是没有问题的，逐帧播放是没有出现丢帧的情况。会不会是还有其他原因导致的呢？

能不能帮忙提供一个测试的YUV文件让我尝试一下编码会不会有问题呢？

Hi, Probably it’s because 25 fps content is played in 30 fps, making you think some frames gets dropped?

Ffmpeg 使用 h264_nvmpi 硬件编码 YUV420P 为 H264 文件出现掉帧

Robotics & Edge Computing Jetson Systems Jetson Orin NX

DaneLLL July 31, 2025, 1:44am 14

Hi,
Please check
NvVideoEncoder::setFrameRate - #5 by DaneLLL

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Ffmpeg 使用 h264_nvmpi 硬件编码 YUV420P 为 H264 文件出现掉帧

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