命令, 设置 播放像素为 800 x 600 像素 , 此时会在 800 x 600 的窗口中播放视频 ; 4、设置 YUV 播放分辨率 -video_size 和 像素设置 -pixel_format 如果是 没有包含 视频帧 大小 的 yuv 格式的视频 -video_size WxH 命令行参数 , 设置 显示 的 视频帧 尺寸 ; 使用 -pixel_format yuv420p 命令行参...
-pixel_format yuv420p 命令行参数 , 设置显示的 yuv 像素格式 , 执行 代码语言:javascript 复制 ffplay-pixel_format yuv420p-video_size 320x240-framerate5yuv420p_320x240.yuv 命令, 设置 播放像素为 320x240 像素 , 此时会在 320x240 的窗口中播放视频 ; 使用ffplay 播放 yuv 视频 , 需要设置很多参数 ...
In analog images such as film there is no notion of pixel, nor notion of SAR or PAR, and "aspect ratio" refers unambiguously to DAR. Actual displays do not generally have non-square pixels, though digital sensors might; they are rather a mathematical abstraction used in resampling images to...
In analog images such as film there is no notion of pixel, nor notion of SAR or PAR, and "aspect ratio" refers unambiguously to DAR. Actual displays do not generally have non-square pixels, though digital sensors might; they are rather a mathematical abstraction used in resampling images to...
ffplay 使用的参数为pixel_format,ffmpeg使用的参数是pix_fmt -pixel_format <string> .D... set video pixel format s | video_size ffplay使用的是video_size, ffmeg使用的参数是s -s size set frame size (WxH or abbreviation) framerate -frame...
【查看ffmpeg支持的像素格式】:ffmpeg -pix_fmts. 2.ffplay显示图片 ffplay -video_size500*318dunxia_w500_h318.yuvffplay -idunxia_w290_h220.yuv-video_size290*220-pixel_format nv12 注:-i输入图片 -video_size显示图片大小 -pixel_format指定像素格式(非常重要) ...
Set pixel format. This option has been deprecated in favor of private options, try -pixel_format. -stats Print several playback statistics, in particular show the stream duration, the codec parameters, the current position in the stream and the audio/video synchronisation drift. It is shown by...
0 means silence, 100 means no volume reduction or amplification. Negative values are treated as 0, values above 100 are treated as 100. -f fmt Force format. -window_title title Set window title (default is the input filename). -left title Set the x position for the left of the ...
{ "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" }, { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" }, { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimiza...
(usb_format) { // av_dict_set( &mp_opts, "max_delay", "500000", 0 ); // half second // av_dict_set( &mp_opts, "rtbufsize", "106M", 0 ); // a half second of 1280x720x4 av_dict_set( &mp_opts, "fflags", "nobuffer", 0 ); char bsjnk[1024]; sprintf( bsjnk, ...