apt update apt-get install deb-multimedia-keyring apt install ffmpeg 简介 FFmpeg的名称来自MPEG视频编码标准,前面的“FF”代表“Fast Forward”,FFmpeg是一套可以用来记录、转换数字音频、视频,并能将其转化为流的开源计算机程序。可以轻易地实现多种视频格式之间的相互转换。包括如下几个部分: libavformat:用...
apt update apt-get install deb-multimedia-keyring apt install ffmpeg 简介 FFmpeg的名称来自MPEG视频编码标准,前面的“FF”代表“Fast Forward”,FFmpeg是一套可以用来记录、转换数字音频、视频,并能将其转化为流的开源计算机程序。可以轻易地实现多种视频格式之间的相互转换。包括如下几个部分: libavformat:用...
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}... Use -h to get full help or, even better, run 'man ffmpeg' 1. 2. 3. 可以看到它有5个参数,简化一下就是:ffmpeg {1} {2} -i {3} {4} {5},5个参数含义分别如下: 全局参数 输入文件参数 输入...
-r framerate:指定视频的帧率,即每秒播放的画面数量。较高的帧率可以获得更流畅的视频,但也会增加文件大小。示例:-r 30 表示视频帧率为30 帧每秒。 2.1 查看设备 ffmpeg -devices 当前电脑输出的可用设备如下: Devices: D. = Demuxing supported .E = Muxing supported -- E audiotoolbox AudioToolbox output...
-r framerate:指定视频的帧率,即每秒播放的画面数量。较高的帧率可以获得更流畅的视频,但也会增加文件大小。示例:-r 30 表示视频帧率为 30 帧每秒。 查看设备 ffmpeg -devices 1登录后即可复制 当前电脑输出的可用设备如下: Devices: D. = Demuxing supported .E = Muxing supported -- E audiotoolbox Audio...
-r framerate:指定视频的帧率,即每秒播放的画面数量。较高的帧率可以获得更流畅的视频,但也会增加文件大小。 示例:-r 30 表示视频帧率为30帧每秒。 查看设备 ffmpeg -devices 当前电脑输出的可用设备如下: Devices: D. = Demuxing supported .E = Muxing supported -- E audiotoolbox AudioToolbox output devic...
* * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of...
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intdisplay::initFrameBuffer(intin_width,intin_height) { avfilter_register_all(); buffersrc = avfilter_get_by_name("buffer"); buffersink = avfilter_get_by_name("buffersink"); frame_buffer_in = new unsigned char[MAX_FRAME_BUFFER_SIZE]; ...
*/ int64_t current_pts_us; /** * Index in the age array. */ int age_index; /** * Frame rate of the stream on the link, or 1/0 if unknown or variable; * if left to 0/0, will be automatically copied from the first input * of the source filter if it exists. * * ...