No problem if you specify the video codec for example "-c:v libx264" What steps will reproduce the bug? ffmpeg -i test.mp4 output.mp4 What is the expected behavior? No response System information termux-info: Version 0.118 Termux Variables: TERMUX_APK_RELEASE=UNKNOWN TERMUX_APP_PACKAGE_MANA...
-target type specify target file type ("vcd", "svcd", "dvd", "dv" or "dv50"with optional prefixes "pal-", "ntsc-" or "film-")设置目标文件格式 -apad audio pad -frames number set the number of frames to output 设置帧数 -filter filter_graph set stream filtergraph 设置流...
ffmpeg首先读取输入源,然后通过Demuxer将音视频包进行解封装,这个动作通过调用libavformat中的接口即可实现; 接下来通过Decoder进行解码,将音视频通过Decoder解包称为YUV或者PCM这样的数据,Decoder通过libavcodec中的接口即可实现; 然后通过Encoder将对应的数据进行编码,编码可以通过libavcodec中的接口来实现; 接下来将编码后的...
ffmpeg首先读取输入源,然后通过Demuxer将音视频包进行解封装,这个动作通过调用libavformat中的接口即可实现; 接下来通过Decoder进行解码,将音视频通过Decoder解包称为YUV或者PCM这样的数据,Decoder通过libavcodec中的接口即可实现; 然后通过Encoder将对应的数据进行编码,编码可以通过libavcodec中的接口来实现; 接下来将编码后的...
-target type specify target file type ("vcd", "svcd", "dvd", "dv" or "dv50" with optional prefixes "pal-", "ntsc-" or "film-") 指定目标文件的类型 -apad audio pad 音频补齐 -frames number set the number of frames to output 设置输出多少帧 ...
-target type specify target file type ("vcd", "svcd", "dvd", "dv" or "dv50" with optional prefixes "pal-", "ntsc-" or "film-") -apad audio pad -frames number set the number of frames to output -filter filter_graph set stream filtergraph ...
Please note that this is a different thing than specifying-1for@option{w}or@option{h}, you still needtospecify the output resolutionforthis optiontowork. 大致意思就是由于我们事先不知道设备支持的最大分辨率,使用此参数可以支持缩小视频以适配系统设备分辨率。
-target type specify target file type ("vcd", "svcd", "dvd", "dv" or "dv50" with optional prefixes "pal-", "ntsc-" or "film-")指定目标文件的类型 -apad audio pad音频补齐 -frames number set the number of frames to output设置输出多少帧 ...
-inter_matrix matrix specify inter matrix coeffs -top top=1/bottom=0/auto=-1 field first -dc precision intra_dc_precision -vtag fourcc/tag force video tag/fourcc -qphist show QP histogram -force_fps force the selected framerate, disable the best supported framerate selection ...
-target type specify target file type ("vcd", "svcd", "dvd", "dv" or "dv5 0" with optional prefixes "pal-", "ntsc-" or "film-") -apad audio pad -frames number set the number of frames to output -filter filter_graph set stream filtergraph ...