Jan 29, 2015 · Hi! This is the very beginning of the experiment. The tool that we are using to encode the video sequences is FFmpeg. FFmpeg is a opensource cross-platform solution to record, convert and stream audio and video. We find it very useful especially because of the x265 implementation.
Use the ffmpeg command line to convert to the decided fps those source video files that are in other fps: ffmpeg -i source.video.file -r decidedFPS.00000000 output.video.file For example: ffmpeg -i source.mp4 -r 30.00000000 output.mp4 CHECK also those sources that AFAYK are in the choosen fps! They might be just close to that!
I assume the bundled ffmpeg supports it (I got the string from grepping the buildCore/ffmpeg directory, it is used in vdpau_hevc_init in libavcodec/vdpau_hevc.c:413). The devtalk discussion suggests a recent AMD card might be a better platform to work on VDPAU support.
ffmpeg -i "input.mov" -filter:v "minterpolate='mi_mode=mci:mc_mode=aobmc:vsbmc=1:fps=60'" -c:v prores_ks -c:a copy "output.mov" The end result is very smooth and has excellent scene detection, but with a more distorted "warped" area around moving objects, and more "blockiness" in those areas. It's also glacially slow; neither multithreaded nor ...
ffmpeg -i input.mp4 -i subtitle.srt -map 0 -map 1 -c copy -c:v libx264 -crf 23 -preset veryfast output.mp4. Extracting subtitles takes the following form: ffmpeg -txt_format text -i input.file out.srt. Speed up and slow videos. This is another interesting usecase.
Feb 26, 2019 · Warning: even though this is a 'MegaPixel' camera, it has a very wide-angle lens so the image detail isn't very high. Furthermore, replacement 1/2" lenses seem to be hard to find. ZM configuration is similar to TV-IP512P (above) except the 522 has multiple video profiles, which should be specified as
x264 – very slow; X265 – slow libvpx-vp9 no preset was chosen (which corresponds to a cpu-used value of 1) These settings were chosen from experience. While they do not yield the highest possible compression performance, they correspond to a very high quality encode with a good tradeoff between encoding time and quality.
very slow speed for ffmpeg'segment and hls ? #38. akingbr opened this issue Sep 10, 2018 · 3 comments Comments. Copy link Quote reply akingbr commented Sep 10, 2018. hello, I compile shiftmediaproject ok, then test hls segment, command likes: