ffmpeg frequently use commands

basic

Pgm/ppm to 264/265

ffmpeg -v error -y -r 15 -i %08d.ppm -vcodec libx264 -pix_fmt yuv420p -b:v 50M out.mp4

Pgm/ppm to yuv

ffmpeg -v error -y -r 15 -i %08d.ppm -pix_fmt yuv420p out.yuv

Flags

-v        : loglevel, error means show all logs
-y        : overwrite output files without asking
-r        : framerate, fps
-i        : input file name
-vcodec   : video codec
-pix_fmt  : pixel format
-b:v      : bitrate

Transformat

PCM to .wav

ffmpeg.exe -f s16le -ar 8000 -i <file name> -ar 8000 <file name.wav>

MP4 to FLV

ffmpeg -i input.mp4 -codec copy output.flv

dump MP4 info

ffmpeg -i input.mp4
ffprobe -i input.mp4 -show_format -show_streams -show_frames > xxx.json

#  get audio track only
ffmpeg -i input.mp4 -vn output_audio.mp3
# get video track only
ffmpeg -i input.mp4 -an output_video.mp4

dump to .csv

ffprobe -i 4K.mp4 -select_streams v -show_frames -of csv -o 4K.csv 

dump to .xml

ffprobe -i 4K.mp4 -select_streams v -show_frames -of xml -o 4K.xml

player

RTSP or HTTP/FLV and record

ffmpeg -rtsp_transport tcp -i rtsp://<DUT IP>:9554/live/0 -t 30 -c copy out_h265_0.265