推一个RTSP摄像头的流数据时,一旦打开该摄像头的音频轨道就会在av_interleaved_write_frame()函数处出错...
import subprocess import re def get_font_fullname(font_path): try: # Run fc-scan and capture the output result = subprocess.run(['fc-scan', font_path], stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True) # Check for errors if result.returncode != 0: print(result.stderr) retu...
1. 编译Mac下可用 FFmpeg 编译Mac下可用 FFmpeg,主要是可以在mac中,使用 FFmpeg 进行操作视频等。 Homebrew介绍 简称brew,是Mac OSX上的软件包管理工具,能在Mac中方便的安装软件或者卸载软件。 Homebrew安装 打开终端执行 ruby -e "$(curl -fsSL[https://raw.githubusercontent.com/Homebrew/install/master/install...
To check that point, use ffplay to see if it decode or not... Share Improve this answer Follow answered Jul 16, 2013 at 20:27 alexbuisson 8,33933 gold badges3333 silver badges4545 bronze badges Add a comment 1 For me this meant I was configuring ffmpeg like "./configure --dis...
同样的文件里,在ff_h264_check_intra4x4_pred_mode函数中,也有一个花屏常见的错误,left block unavailable for requested intra4x4 mode,例如你想在这里做个标记,添加deviser_1 = 222222; if (status < 0) { av_log(logctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d\n", ...
* In blocking mode, wait for data/EOF/error with a short timeout (0.1s), * and return AVERROR(EAGAIN) on timeout. * Checking interrupt_callback, looping on EINTR and EAGAIN and until * enough data has been read is left to the calling function; see ...
psnr E..V.. sum of squared quantization errors (avoid, low quality) bit E..V.. number of bits needed for the block rd E..V.. rate distortion optimal, slow zero E..V.. 0 vsad E..V.. sum of absolute vertical differences
video_refresh是真正刷新视频画面的函数。 stream_open中初始化需要使用的队列、clock以及相关参数,并创建相关的线程比如音视频解复用线程、音视频解码线程。 2 ffplay中使用到的数据结构 2.1 AVPacket队列 //avpackt的队列节点,serial表示当前packet的序号
虽然FFmpeg本身有cuvid硬解,但是找不到什么好的资料,英伟达的SDK比较容易懂,参考FFmpeg源码,将NVIDIA VIDEO CODEC SDK的数据获取改为FFmpeg获取,弥补原生SDK不能以流作为数据源的不足。所用SDK版本为Video_Codec_SDK_7.1.9,英伟达官网可下载。 1.修改数据源 ...
Looking at the changelog quite some changes have been made between 1.5.7 and 1.5.8, so it might be that I'll have to stick with 1.5.7, or I might find out later today that this version also gives me these errors sometimes and then I think I'll skip Full HD for now as that seem...