![]() That's all for this post, next post I will show about how to write code in c++ to encode/decode h.264 by using libavcodec of ffmpeg. ![]() decode_out.yuv define output sequence in format of yuv.Īnd the output that show on console will look like this.ĭecode_out.yuv can open by using yuv player. i test.mp4 define input sequence to decode. You can play test.mp4 to see the result clip by using player that contain h.264 codec.ĭecode process is easier, it just type a few command line to ffmpeg like this. 1 & English 1080p 720p & 480p Dual Audio x264/10Bit HEVC Full Movie. ![]() threads 0 set thread for encoding to zero.Īnd after run this command encoded sequence will be created to test.mp4 and console log will shown like this. ![]() fpre libx264-lossless_fast.ffpreset define encoding parameter for h.264 that contain in ffpreset file. an disable audio we will encode only video data i Foreman.qcif define input sequence I use the test classic test sequence that name foreman.qcif, I think you can get it on google. s qcif tell ffmpeg that we will encode input yuv video with qcif(176*144) size. I will talk about how to build ffmpeg on window on the next post.Ģ.go to directory that contain your ffmpeg lib and type this command on your console.įfmpeg.exe -s qcif -i Foreman.qcif -r 25 -an -pass 1 -vcodec libx264 -fpre libx264-lossless_fast.ffpreset -b 32000 -threads 0 test.mp4 For video, it will select stream 0 from B. This produces a valid mp4 file, however when watched on an ipad, the video. So far I've come up with the following ffmpeg command: ffmpeg -i video.avi -vcodec copy -acodec libfaac -ac 2 -ab 160k video.m4v. out1.mkv is a Matroska container file and accepts video, audio and subtitle streams, so ffmpeg will try to select one of each type. having to re-encode so that it can be done quickly and without loss of video. * You can get ffmpeg and libx264 library by download from website or you can get its source code and make install to msys. There are three output files specified, and for the first two, no -map options are set, so ffmpeg will select streams for these two files automatically. This demonstration work on windows7 32bits.ġ.We need to prepare environment like this. Today I take time to demonstrate encode and decode process with ffmpeg/x264.įirst I will show about how to encode h.264 by ffmpeg and then I will show decode.
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