ffmpeg 转场滤镜 GL-Transitions 74种效果

#!/bin/bash
# Example of concatenating multiple mp4s together with 1-second transitions between them.

gltransition=( \
"angular" \
"Bounce" \
"BowTieHorizontal" \
"BowTieVertical" \
"BowTieWithParameter" \
"burn" \
"ButterflyWaveScrawler" \
"cannabisleaf" \
"circle" \
"CircleCrop" \
"circleopen" \
"colorphase" \
"ColourDistance" \
"CrazyParametricFun" \
"crosshatch" \
"crosswarp" \
"CrossZoom" \
"cube" \
"Directional" \
"directional-easing" \
"directionalwarp" \
"directionalwipe" \
"displacement" \
"DoomScreenTransition" \
"doorway" \
"Dreamy" \
"DreamyZoom" \
"fade" \
"fadecolor" \
"fadegrayscale" \
"FilmBurn" \
"flyeye" \
"GlitchDisplace" \
"GlitchMemories" \
"GridFlip" \
"heart" \
"hexagonalize" \
"InvertedPageCurl" \
"kaleidoscope" \
"LeftRight" \
"LinearBlur" \
"luma" \
"luminance_melt" \
"morph" \
"Mosaic" \
"multiply_blend" \
"perlin" \
"pinwheel" \
"pixelize" \
"polar_function" \
"PolkaDotsCurtain" \
"Radial" \
"randomNoisex" \
"randomsquares" \
"ripple" \
"rotate_scale_fade" \
"SimpleZoom" \
"squareswire" \
"squeeze" \
"StereoViewer" \
"swap" \
"Swirl" \
"tangentMotionBlur" \
"TopBottom" \
"undulatingBurnOut" \
"WaterDrop" \
"wind" \
"windowblinds" \
"windowslice" \
"wipeDown" \
"wipeLeft" \
"wipeRight" \
"wipeUp" \
"ZoomInCircles" \
)

length=${#gltransition[@]}

interval=1

tpath="/ffmpeg/gl-transitions/transitions-20201217/"
tpath="/ffmpeg/transitions/"
x264="-look_ahead 0 -ac 2 -c:v h264_qsv -c:a aac -profile:v high -level 3.1 -preset:v veryfast"
ki="-keyint_min 72 -g 72 -sc_threshold 0"
br="-b:v 3000k -minrate 3000k -maxrate 6000k -bufsize 6000k -b:a 128k -avoid_negative_ts make_zero -fflags +genpts"

duration=1
function get_duration_video_ffprobe(){
  duration=$(ffprobe -v error -count_frames -select_streams v:0 -show_entries stream=duration -of default=nokey=1:noprint_wrappers=1 "$1")
  duration=$(echo "scale=3; $duration/1"|bc -l)
}
function get_duration_audio_ffprobe(){
  aduration=$(ffprobe -v error -count_frames -select_streams a:0 -show_entries stream=duration -of default=nokey=1:noprint_wrappers=1 "$1")
  aduration=$(echo "scale=3; $aduration/1"|bc -l)
}

MediaInfo="D:\soft\MediaInfo_CLI_19.04_Windows_x64\MediaInfo.exe"
function get_duration_video_MediaInfo(){
  # duration=$($MediaInfo --Inform="Video;%Duration/String3%" "$1")
  duration=$($MediaInfo --Inform="Video;%Duration%" "$1")
  duration=$(echo "scale=3; $duration/1000"|bc -l)
}
function get_duration_audio_MediaInfo(){
  # duration=$($MediaInfo --Inform="Video;%Duration/String3%" "$1")
  aduration=$($MediaInfo --Inform="Audio;%Duration%" "$1")
  aduration=$(echo "scale=3; $aduration/1000"|bc -l)
}

# ls -u *.mp4       sort by time
# ls *.mp4|sort     sort by name
line=-1
IFS=$(echo -en "\n\b")
for f in `ls *.mp4|sort`; do
  line=$((line+1))
  get_duration_video_MediaInfo "${f}"
  get_duration_audio_MediaInfo "${f}"
  ifd=`echo "scale=0; ${aduration}*1000-${duration}*1000"|bc -l -q`
  ifd=${ifd/.000/}
  echo ${line} ${f} ${duration} - ${aduration} = $ifd
  if [[ ${ifd} -le 0 ]]; then
    duration=${aduration}
  fi
  #echo ${line} ${f} ${duration}
  duration_array[${line}]=${duration}
  filename_array[${line}]=${f}
  index_array[${line}]=${line}
done

vfstr=""
for i in ${index_array[@]}; do
  catlen=0$(echo "scale=3; ${duration_array[$i]}-${interval}/2"|bc -l)
  catlen2=0$(echo "scale=3; ${duration_array[$i]}-${interval}"|bc -l)
  catlenhalf=0$(echo "scale=3; ${interval}/2"|bc -l)
  if [ ${i} -lt ${line} ]
  then
    if [ ${i} -eq 0 ]
    then
        vfstr=${vfstr}"[$i:a]atrim=0:$catlen[a$i];"
    else
        vfstr=${vfstr}"[$i:a]atrim=$catlenhalf:$catlen2[a$i];"
    fi
  else
    vfstr=${vfstr}"[$i:a]atrim=$catlenhalf:$catlen[a$i];"
  fi
  vfstr=${vfstr}"[$i:v]split[v${i}00][v${i}10];"
done

for i in ${index_array[@]}; do
  catlen=0$(echo ${duration_array[$i]}-${interval}|bc -l)
  vfstr=${vfstr}"[v${i}00]trim=0:$catlen[v${i}01];"
  vfstr=${vfstr}"[v${i}10]trim=$catlen:${duration_array[$i]}[v${i}11t];"
  vfstr=${vfstr}"[v${i}11t]setpts=PTS-STARTPTS[v${i}11];"
done

for ((i=0; i<$line; ++i)) ; do
  Index=$[i%(($length))]
  #Index=$[RANDOM%(($length))]
  echo ${gltransition[$Index]}
  vfstr=${vfstr}"[v${i}11][v$((i+1))01]gltransition=duration=${interval}:source=${tpath}${gltransition[$Index]}.glsl[vt${i}];"
done

vfstr=${vfstr}"[v001]"
for ((i=0; i<$line; ++i)) ; do
  vfstr=${vfstr}"[vt${i}]"
done
vfstr=${vfstr}"[v${line}11]concat=n=$((line+2))[outv];"

for i in ${index_array[@]}; do
  vfstr=${vfstr}"[a${i}]"
done
vfstr=${vfstr}"concat=n=$((line+1)):v=0:a=1[outa]"

infile=""
for i in ${filename_array[@]}; do
  infile=${infile}" -i \"$i\""
done

if [ ! -d "merge" ];then
  mkdir merge
fi

echo ${vfstr} > _vfstr_.txt
cmd="ffmpeg -hide_banner${infile} \
-filter_complex_script \"_vfstr_.txt\" \
-map [outv] -map [outa] ${x264} ${ki} ${br} \
-y ./merge/ffmpeg-gl-transition-concat.mp4"
echo $cmd >_merge_.cmd
#./_merge_.cmd

echo ${cmd}
bash -c "$cmd"

 

转场效果参考 https://v.huya.com/play/469910857.html

缺点：需要消耗大量内存，连接视频数量60个以上时可能提示内存不够

官方的 ffmpeg 不带这个滤镜，增加该滤镜参考 https://github.com/transitive-bullshit/ffmpeg-gl-transition