10 Basic Design Patterns

 




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FFMPEG Deinterlacing Modes

FFMPEG has multiple supported deinterlacing filters.  Here they are: 10.14 bwdif Deinterlace the input video ("bwdif" stands for "Bob Weaver Deinterlacing Filter"). Motion adaptive deinterlacing based on yadif with the use of w3fdif and cubic interpolation algorithms. It accepts the following parameters: mode The interlacing mode to adopt. It accepts one of the following values: 0, send_frame Output one frame for each frame. 1, send_field Output one frame for each field. The default value is send_field. parity The picture field parity assumed for the input interlaced video. It accepts one of the following values: 0, tff Assume the top field is first. 1, bff Assume the bottom field is first. -1, auto Enable automatic detection of field parity. The default value is auto. If the interlacing is unknown or the decoder does not export this information, top field first will be assumed. deint Specify which frames to deinterlace. Accept ...
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Remote debugging with GDB and GDBServer on Alpine and Visual Studio Code

Skip to end of metadata o to start of metadata gdb and gdbserver can be used in combination to provide debugging capabilities over the network.   gdbserver  is run on the machine you want to debug.   gdb  is run on the machine you want to debug from, usually your local machine. More  here . Before we get started, we need some software.  Alpine 3.8 will be the gdbserver. NFS We will be using nfs (Network File System) to mount a remote directory and have it look like a local directory.  We will cd to the nfs mounted directory which contains the program we want to debug before we launch gdb.  This way the program and symbols will match.  gdb will be running on your local client, but it will be launched when in a directory on the gdbserver's system. More than you wanted to know about  nfs . To set up nfs, you will need nfs software on your server and your client. SERVER  (Your Alpine machine) - Ad...
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FFMPEG: MPEG2 Encoder Options

Run: % ffmpeg -h encoder=mpeg2video And you get: Encoder mpeg2video [MPEG-2 video]:     General capabilities: delay threads     Threading capabilities: slice     Supported framerates: 1/1 2/1 3/1 4/1 5/1 6/1 8/1 9/1 10/1 12/1 15/1 16/1 18/1 20/1 24/1 25/1 30/1 32/1 36/1 40/1 45/1 48/1 50/1 60/1 72/1 75/1 80/1 90/1 96/1 100/1 120/1 150/1 180/1 200/1 240/1 750/1001 800/1001 960/1001 1000/1001 1200/1001 1250/1001 1500/1001 1600/1001 1875/1001 2000/1001 2400/1001 2500/1001 3000/1001 3750/1001 4000/1001 4800/1001 5000/1001 6000/1001 7500/1001 8000/1001 10000/1001 12000/1001 15000/1001 20000/1001 24000/1001 30000/1001 60000/1001     Supported pixel formats: yuv420p yuv422p mpeg2video encoder AVOptions:   -gop_timecode      <string>     E..V..... MPEG GOP Timecode in hh:mm:ss[:;.]ff format. Overrides timecode_frame_start.   -intra_vlc         <boolean>    ...
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