Improve some video encoding scripts, making use of the GPU again

.aliases

@@ -794,20 +794,26 @@ download_twitch_vid() {
 # e.g.  --cookies cookies.txt --referer https://gillyandkeeves.tv https://player.vimeo.com/video/756941969
 # The vid ID can be found by looking at the embed's iframe src attribute.
 download_vimeo_vid() {
-    local shortname="$1"
+    local format="$1"
-    local compress="$2"
+    local shortname="$2"
-    local transcribe="$3"
+    local compress="$3"
-    local format="$4"
+    local transcribe="$4"
     local make_folder="$5"
     local url="$6"
-    shift 5
+    shift 6
     local opts="$@"
 
-    if [[ $format == "" || $url == "" ]]; then
+    if [[ $url == "" ]]; then
-        error "Usage: <format> <make folder?> <url> <optional args>"
+        error "Usage: <make folder?> <url> <optional args>"
         return
     fi
 
+    if [[ $format == "" ]]; then
+        printf "${BOLD}No format given; using best available.${NORMAL}\n"
+        # Download best mp4 video.
+        format="bv*[ext=mp4]+ba[ext=m4a]"
+    fi
+
     if [[ $shortname == "1" || $compress == "1" || $transcribe == "1" ]]; then
         printf "${BOLD}Downloading Vimeo vid "
         if [[ $shortname == "1" ]];  then printf "| ${YELLOW}using short name${NORMAL}${BOLD} "; fi
@@ -871,7 +877,7 @@ download_twitter_vid() {
     local format="$1"
     local make_folder="$2"
     local url="$3"
-    local vid_name="$4"
+    local vid_name="$4" # optional
 
     if [[ $url == "" ]]; then
         error "Usage: <make folder?> <url> <optional filename> <optional args>"
@@ -882,12 +888,24 @@ download_twitter_vid() {
 
     local opts=""
 
+    if [[ $# > 3 ]]; then
+        # Since the name is optional and we might pass options, like --cookie etc
+        # we need to check if the vid name is set to an option.
+        if [[ $vid_name == -* ]]; then
+            echo "vid name is an option"
+            shift 3
+            vid_name=""
+            opts="$@"
+        else
+            shift 4
+            opts="$@"
+        fi
+    fi
+
     if [[ $vid_name == "" ]]; then
         local name_format="%(upload_date>%Y-%m-%d)s-%(title)s-twitter-%(id)s"
     else
         local name_format="%(upload_date>%Y-%m-%d)s-${vid_name}-twitter-%(id)s"
-        shift 4
-        opts="$@"
     fi
 
     if [[ $make_folder == "1" ]]; then
@@ -924,10 +942,9 @@ download_twitter_vid() {
 # Download Instagram videos.
 download_instagram_vid() {
     local transcribe="$1"
-
     local make_folder="$2"
     local url="$3"
-    local vid_name="$4"
+    local vid_name="$4" # optional
 
     if [[ $url == "" ]]; then
         error "Usage: <make folder?> <url> <optional filename> <optional args>"
@@ -938,12 +955,24 @@ download_instagram_vid() {
 
     local opts=""
 
+    if [[ $# > 3 ]]; then
+        # Since the name is optional and we might pass options, like --cookie etc
+        # we need to check if the vid name is set to an option.
+        if [[ $vid_name == -* ]]; then
+            echo "vid name is an option"
+            shift 3
+            vid_name=""
+            opts="$@"
+        else
+            shift 4
+            opts="$@"
+        fi
+    fi
+
     if [[ $vid_name == "" ]]; then
         local name_format="%(upload_date>%Y-%m-%d)s-%(title)s-ig-%(id)s"
     else
         local name_format="%(upload_date>%Y-%m-%d)s-${vid_name}-ig-%(id)s"
-        shift 4
-        opts="$@"
     fi
 
     if [[ $make_folder == "1" ]]; then
@@ -1069,29 +1098,46 @@ alias yt-list-desc='download_youtube_uploads_list 1 '
 
 alias yt='download_youtube_vid                  ""        $SHORTNAME_OFF $TRANSCRIBE_OFF'
 alias yt-shortname='download_youtube_vid        ""        $SHORTNAME_ON  $TRANSCRIBE_OFF'
-alias yt-1440='download_youtube_vid             "620+140" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+
-alias yt-1440p60='download_youtube_vid          "400+140" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+alias yt-4k='download_youtube_vid               "625+234" $SHORTNAME_OFF $TRANSCRIBE_OFF'
-alias yt-1440-shortname='download_youtube_vid   "620+140" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+alias yt-4k-shortname='download_youtube_vid     "625+234" $SHORTNAME_ON  $TRANSCRIBE_OFF'
-alias yt-1080='download_youtube_vid             "137+140" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+
-alias yt-1080-shortname='download_youtube_vid   "137+140" $SHORTNAME_ON  $TRANSCRIBE_OFF'
+alias yt-1440='download_youtube_vid             "620+234" $SHORTNAME_OFF $TRANSCRIBE_OFF'
-alias yt-720='download_youtube_vid              "136+140" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+alias yt-1440p60='download_youtube_vid          "400+234" $SHORTNAME_OFF $TRANSCRIBE_OFF'
-alias yt-720-shortname='download_youtube_vid    "136+140" $SHORTNAME_ON  $TRANSCRIBE_OFF'
+alias yt-1440-shortname='download_youtube_vid   "620+234" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+
+# Premium
+alias yt-1080p='download_youtube_vid            "616+234" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+alias yt-1080p-shortname='download_youtube_vid  "616+234" $SHORTNAME_ON  $TRANSCRIBE_OFF'
+# Normal
+alias yt-1080='download_youtube_vid             "270+234" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+alias yt-1080-shortname='download_youtube_vid   "270+234" $SHORTNAME_ON  $TRANSCRIBE_OFF'
+
+alias yt-720='download_youtube_vid              "136+234" $SHORTNAME_OFF $TRANSCRIBE_OFF'
+alias yt-720-shortname='download_youtube_vid    "136+234" $SHORTNAME_ON  $TRANSCRIBE_OFF'
+
 #TRANSCRIPTION ON
 alias ytt='download_youtube_vid                 ""        $SHORTNAME_OFF $TRANSCRIBE_ON'
 alias yt-shortname-t='download_youtube_vid      ""        $SHORTNAME_ON  $TRANSCRIBE_ON'
-alias yt-1440-t='download_youtube_vid           "620+140" $SHORTNAME_OFF $TRANSCRIBE_ON'
+alias yt-4k-t='download_youtube_vid             "625+234" $SHORTNAME_OFF $TRANSCRIBE_ON'
-alias yt-1440-shortname-t='download_youtube_vid "620+140" $SHORTNAME_ON  $TRANSCRIBE_ON'
+alias yt-4k-shortname-t='download_youtube_vid   "625+234" $SHORTNAME_ON  $TRANSCRIBE_ON'
-alias yt-1080-t='download_youtube_vid           "137+140" $SHORTNAME_OFF $TRANSCRIBE_ON'
+alias yt-1440-t='download_youtube_vid           "620+234" $SHORTNAME_OFF $TRANSCRIBE_ON'
-alias yt-1080-shortname-t='download_youtube_vid "137+140" $SHORTNAME_ON  $TRANSCRIBE_ON'
+alias yt-1440-shortname-t='download_youtube_vid "620+234" $SHORTNAME_ON  $TRANSCRIBE_ON'
-alias yt-720-t='download_youtube_vid            "136+140" $SHORTNAME_OFF $TRANSCRIBE_ON'
+alias yt-1080p-t='download_youtube_vid           "616+234" $SHORTNAME_OFF $TRANSCRIBE_ON'
-alias yt-720-shortname-t='download_youtube_vid  "136+140" $SHORTNAME_ON  $TRANSCRIBE_ON'
+alias yt-1080p-shortname-t='download_youtube_vid "616+234" $SHORTNAME_ON  $TRANSCRIBE_ON'
+alias yt-1080-t='download_youtube_vid           "270+234" $SHORTNAME_OFF $TRANSCRIBE_ON'
+alias yt-1080-shortname-t='download_youtube_vid "270+234" $SHORTNAME_ON  $TRANSCRIBE_ON'
+alias yt-720-t='download_youtube_vid            "136+234" $SHORTNAME_OFF $TRANSCRIBE_ON'
+alias yt-720-shortname-t='download_youtube_vid  "136+234" $SHORTNAME_ON  $TRANSCRIBE_ON'
 #---------------------------
 alias yt-playlist='download_youtube_playlist       ""'
-alias yt-playlist-audio='download_youtube_playlist "140"'
+alias yt-playlist-audio='download_youtube_playlist "234"'
-alias yt-playlist-1440='download_youtube_playlist  "620+140"'
+alias yt-playlist-4k='download_youtube_playlist    "625+234"'
-alias yt-playlist-1080='download_youtube_playlist  "137+140"'
+alias yt-playlist-1440='download_youtube_playlist  "620+234"'
-alias yt-playlist-720='download_youtube_playlist   "136+140"'
+alias yt-playlist-1080p='download_youtube_playlist "616+234"'
-alias yt-playlist-tiny='download_youtube_playlist  "160+140"'
+alias yt-playlist-1080='download_youtube_playlist  "270+234"'
+alias yt-playlist-720='download_youtube_playlist   "136+234"'
+alias yt-playlist-tiny='download_youtube_playlist  "160+234"'
 alias yt-playlist-list='download_youtube_playlist_list '
 #---------------------------
 alias yt-audio='download_youtube_audio'
@@ -1173,16 +1219,16 @@ alias tw-4k-shortname-compressed-t='download_twitch_vi       "2160p"   $SHORTNAM
 #-------------------------------------------------
 # Vimeo Vid DL
 #-------------------------------------------------
-alias vimeo='download_vimeo_vid              $SHORTNAME_OFF $COMPRESSION_ON $TRANSCRIBE_OFF'
+alias vimeo='download_vimeo_vid              "" $SHORTNAME_OFF $COMPRESSION_OFF $TRANSCRIBE_OFF'
-alias vimeo-t='download_vimeo_vid            $SHORTNAME_OFF $COMPRESSION_ON $TRANSCRIBE_ON'
+alias vimeo-t='download_vimeo_vid            "" $SHORTNAME_OFF $COMPRESSION_OFF $TRANSCRIBE_ON'
-alias vimeo-compressed='download_vimeo_vid   $SHORTNAME_OFF $COMPRESSION_ON $TRANSCRIBE_OFF'
+alias vimeo-compressed='download_vimeo_vid   "" $SHORTNAME_OFF $COMPRESSION_ON  $TRANSCRIBE_OFF'
-alias vimeo-compressed-t='download_vimeo_vid $SHORTNAME_OFF $COMPRESSION_ON $TRANSCRIBE_ON'
+alias vimeo-compressed-t='download_vimeo_vid "" $SHORTNAME_OFF $COMPRESSION_ON  $TRANSCRIBE_ON'
 
 #-------------------------------------------------
 # Instagram Vid DL
 #-------------------------------------------------
-alias ig='download_instagram_vid  $TRANSCRIBE_OFF'
+alias ig='echo using my accounts with cookies to dl ig vids makes instagram think i am a bot and they might close my account. do not use your accounts' #download_instagram_vid  $TRANSCRIBE_OFF'
-alias igt='download_instagram_vid $TRANSCRIBE_ON'
+alias igt='echo using my accounts with cookies to dl ig vids makes instagram think i am a bot and they might close my account. do not use your accounts' #download_instagram_vid  $TRANSCRIBE_ON'
 
 #-------------------------------------------------
 # Twitter Vid DL
@@ -1194,7 +1240,6 @@ alias twitter='download_twitter_vid "" '
 #-------------------------------------------------
 alias download-mp4='download_mp4'
 alias download-from-stream='download_mp4_from_stream'
-alias download-from-m3u8='echo Use download-from-stream instead.'
 alias download-audio-from-stream='download_aac_from_stream'
 alias download-audio-from-m3u8='echo Use download-audio-from-stream instead.'
 
@@ -1223,7 +1268,7 @@ alias av='analyze-volume'
 alias aa='analyze-volume'
 alias nv='normalize-volume'
 alias na='normalize-volume'
-alias tv='trim-video'
+alias tv='trim-video-vbr'
 
 ####################################################################################################
 # Git

dotfiles/bin/compress-video

@@ -23,10 +23,10 @@ else
     NORMAL=""
 fi
 
-use_gpu=0
+use_gpu=1
 
-if [[ $# < 2 || $# > 3 ]]; then
+if [[ $# < 2 || $# > 5 ]]; then
-    printf "${BOLD}${RED}Usage: compress-video <filename> <output name> <optional: use-gpu (1|0), defaults to $use_gpu> ${NORMAL}\n"
+    printf "${BOLD}${RED}Usage: compress-video <filename> <output name> <optional: use-gpu (1|0), defaults to $use_gpu> <optional: start time HH:MM:SS> <optional: end time HH:MM:SS> ${NORMAL}\n"
     exit 1
 fi
 
@@ -40,8 +40,8 @@ fi
 # Found the following to work best with vids containing text (e.g. programming vid): 21 for CPU encoding and 28 for GPU (similar bitrates).
 use_crf=21
 if [[ $use_gpu -eq 1 ]]; then
-    use_crf=28
+    use_crf=33
 fi
 
-compress-video-with-crf $use_crf "$filename" "$output_name" $use_gpu
+compress-video-with-crf $use_crf "$filename" "$output_name" $use_gpu $4 $5
 

dotfiles/bin/compress-video-with-crf

@@ -23,7 +23,7 @@ else
     NORMAL=""
 fi
 
-use_gpu=0
+use_gpu=1
 
 if [[ "$#" < 3 || "$#" > 6 ]]; then
     printf "${BOLD}${RED}Usage: compress-video-with-crf <crf value> <filename> <output name> <optional: use-gpu (1|0), defaults to $use_gpu> <optional: start time HH:MM:SS> <optional: end time HH:MM:SS>\n\nIf you want to encode a range of CRF values then use -1 as the crf value.${NORMAL}\n"
@@ -66,18 +66,24 @@ function encode() {
 
     if [[ $use_gpu -eq 1 ]]; then
         # RTX 3080
-        ffmpeg -y -stats -loglevel level+error $timing_args -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -i "$filename.$extension" -c:a copy -c:v h264_nvenc -profile:v high -rc:v vbr_hq -cq:v $crf -b:v 5M -maxrate 5M -max_muxing_queue_size 9999 "$output"
+        # vbr_hq is smaller file and less bitrate than vbr - strange!
+        ffmpeg -y -stats -loglevel level+error -hwaccel cuda -hwaccel_output_format cuda $timing_args -accurate_seek -i "$filename.$extension" -c:v h264_nvenc -profile:v high -preset 3 -rc:v vbr -cq:v $crf -c:a copy -max_muxing_queue_size 9999 -movflags +faststart "$output"
 
-        # GTX 1070
+        # capped bitrate w/ crf is weird. gives a more compressed copy
-        #ffmpeg -y -stats -loglevel level+error $timing_args -vsync 0 -hwaccel cuvid -c:v h264_cuvid -i "$filename.$extension" -c:a copy -c:v h264_nvenc -profile:v high -rc:v vbr_hq -cq:v $crf -b:v 5M -maxrate 5M -max_muxing_queue_size 9999 "$output"
+        # ffmpeg -y -stats -loglevel level+error -hwaccel cuda -hwaccel_output_format cuda $timing_args -accurate_seek -i "$filename.$extension" -c:v h264_nvenc -profile:v high -preset 3 -cq:v $crf -b:v 1200K -maxrate:v 1200K -bufsize:v 2400K -c:a copy -max_muxing_queue_size 9999 -movflags +faststart "$output"
     else
         ffmpeg -y -stats -loglevel level+error $timing_args -i "$filename.$extension" -c:v libx264 -crf $crf -preset veryfast -profile:v high -level 3.0 -strict -2 "$output"
     fi
     printf "\n${GREEN}${BOLD}Finished encoding '$filename.$extension' (CRF $crf) | output name '$output'${NORMAL}\n\n"
+
+    original_size=$(wc -c <"$filename.$extension")
+    new_size=$(wc -c <"$output")
+    printf "${BOLD}Original size: $original_size${NORMAL}\n"
+    printf "${BOLD}New size:      $new_size${NORMAL}\n\n"
 }
 
 if [[ $use_crf -ne -1 ]]; then
-    encode $use_crf
+    time encode $use_crf
 else
     printf "\n${YELLOW}${BOLD}Encoding using a range of CRF values.${NORMAL}\n"
 

dotfiles/bin/trim-audio

@@ -53,5 +53,8 @@ printf "\n${YELLOW}${BOLD}Trimming '$filename' | output: $output_name_with_exten
 
 ffmpeg -y -stats -loglevel level+error $timing_args -accurate_seek -i "$filename" -map a "$output_name_with_extension"
 
+#If you want to have a specific bit rate and sample rate then you need to add it before the output filename. Might also need to remove the -map a arg. e.g.
+#ffmpeg -y -stats -loglevel level+error $timing_args -accurate_seek -i "$filename" -c:a aac -b:a 191k -ar 48000 "$output_name_with_extension"
+
 printf "\n${GREEN}${BOLD}Finished trimming${NORMAL}\n\n"
 

dotfiles/bin/trim-video-target-rate

@@ -0,0 +1,92 @@
+#!/usr/bin/env bash
+
+# Re-encodes the video using a constrained bitrate/output size. If you want to
+# To target the visual quality with a variable bitrate, use trim-video-vbr
+
+if which tput >/dev/null 2>&1; then
+    ncolors=$(tput colors)
+fi
+if [ -t 1 ] && [ -n "$ncolors" ] && [ "$ncolors" -ge 8 ]; then
+    RED="$(tput setaf 1)"
+    GREEN="$(tput setaf 2)"
+    YELLOW="$(tput setaf 3)"
+    BLUE="$(tput setaf 4)"
+    MAGENTA="$(tput setaf 5)"
+    CYAN="$(tput setaf 6)"
+    BOLD="$(tput bold)"
+    NORMAL="$(tput sgr0)"
+else
+    RED=""
+    GREEN=""
+    YELLOW=""
+    BLUE=""
+    MAGENTA=""
+    CYAN=""
+    BOLD=""
+    NORMAL=""
+fi
+
+filename=$(basename -- "$1")
+output_name="$2"
+target_bitrate_mb="$3"
+start_time="$4"
+end_time="$5"
+
+if [[ $filename == "" || $output_name == "" || $target_bitrate_mb == "" || $start_time == "" ]]; then
+    printf "${BOLD}${RED}Usage: trim-video <filename> <output name> <target bitrate in MB, e.g. 6> <start time HH:MM:SS> <optional: end time HH:MM:SS, use empty string or 0 for no value>${NORMAL}\n"
+    exit 1
+fi
+
+extension="${filename##*.}"
+filename="${filename%.*}"
+output="${output_name}.$extension"
+
+# bufsize is typically double the maxrate
+bufsize=$((target_bitrate_mb * 2))
+bufsize="${bufsize}M"
+bitrate="${target_bitrate_mb}M"
+
+timing_args=""
+if [[ $start_time != "" ]]; then
+    timing_args="-ss $start_time "
+fi
+if [[ $end_time != "" ]]; then
+    if [[ $start_time == "0" && $end_time == "0" ]]; then
+        # We treat a start and end with 0 values as no op.
+        timing_args=""
+    elif [[ $end_time != "0" ]]; then
+        # Handle having a start time but end time is set to 0, can just ignore it and it'll use the remainder of the video.
+        timing_args+="-to $end_time"
+    fi
+fi
+
+printf "\n${YELLOW}${BOLD}Trimming '$filename.$extension' | output: $output | start: $start_time | end: $end_time | max rate: $bitrate | buffer size: $bufsize ${NORMAL}\n"
+
+# You might have issues if the file has multiple video streams or embedded
+# subtitles. The -map 0 arg is typically given when copying a video stream, but
+# I'm not sure if it's appropriate to use here. If you want to target one of
+# the video streams then use `-map 0:v:0` and if you want to re-encode
+# subtitles then include `-c:s mov_text` with either of the `-map` args.
+
+# -preset 3 and 4 are the fastest on my 3080 and have the same output file
+# size. p3 seems slightly faster. Apparently 7 is the best for 30 series
+# according to chatgpt (lol) but it was slow and compressed.
+
+# -accurate_seek doesn't seem to be needed when -ss is after -i, only when -ss
+# is before -i. Having -ss after is apparently a way of enabling accurate
+# seeking.  The catch is that if the trim doesn't start at 0, it can be a long
+# wait before the encoder gets to the portion you want to start trimming from.
+# To speed this up we are putting -ss and -accurate_seek before -i  ... the
+# video duration might be slightly off from this but so far I haven't seen any
+# seeking issues. If they come up then we can move -ss to after -i again and
+# delete -accurate_seek.
+
+# I'm using -b:v, -maxrate:v, and -bufsize:v to constrain the bitrate and
+# indirectly control quality.  The bitrate won't be fixed exactly to -b:v
+# unless using CBR, but NVENC will attempt to average around it and cap the
+# bitrate at -maxrate:v, using -bufsize:v as a smoothing buffer.
+
+ffmpeg -y -stats -loglevel level+error -hwaccel cuda -hwaccel_output_format cuda $timing_args -accurate_seek -i "$filename.$extension" -c:v h264_nvenc -profile:v high -preset 3 -b:v $bitrate -maxrate:v $bitrate -bufsize:v $bufsize -c:a copy -movflags +faststart "$output"
+
+printf "\n${GREEN}${BOLD}Finished trimming${NORMAL}\n\n"
+

dotfiles/bin/trim-video-vbr

@@ -0,0 +1,124 @@
+#!/usr/bin/env bash
+
+# Re-encodes the video using a target quality level and a variable bitrate.
+# To have a mostly fixed bitrate with no variable quality, use trim-video-target-rate
+# Just note that it'll result in larger files for a similar max bitrate target and the
+# quality won't really be noticeably better.
+
+if which tput >/dev/null 2>&1; then
+    ncolors=$(tput colors)
+fi
+if [ -t 1 ] && [ -n "$ncolors" ] && [ "$ncolors" -ge 8 ]; then
+    RED="$(tput setaf 1)"
+    GREEN="$(tput setaf 2)"
+    YELLOW="$(tput setaf 3)"
+    BLUE="$(tput setaf 4)"
+    MAGENTA="$(tput setaf 5)"
+    CYAN="$(tput setaf 6)"
+    BOLD="$(tput bold)"
+    NORMAL="$(tput sgr0)"
+else
+    RED=""
+    GREEN=""
+    YELLOW=""
+    BLUE=""
+    MAGENTA=""
+    CYAN=""
+    BOLD=""
+    NORMAL=""
+fi
+
+filename=$(basename -- "$1")
+output_name="$2"
+start_time="$3"
+end_time="$4"
+target_crf="$5"
+max_bitrate_mb="$6"
+
+default_crf="20"
+default_max_bitrate="6"
+
+if [[ $filename == "" || $output_name == "" || $start_time == "" ]]; then
+    printf "${BOLD}${RED}Usage: trim-video <filename> <output name> <start time HH:MM:SS> <optional: end time HH:MM:SS, use empty string or 0 for no value> <optional: crf (quality, w/ lower = more compression) - defaults to $default_crf, use 0 for no value> <optional: max bitrate in MB - defaults to ${default_max_bitrate}M>${NORMAL}\n"
+    exit 1
+fi
+
+extension="${filename##*.}"
+filename="${filename%.*}"
+output="${output_name}.$extension"
+
+if [[ $target_crf == "" || $target_crf == "0" ]] then
+    target_crf=$default_crf
+fi
+
+if [[ $max_bitrate_mb == "" ]] then
+    max_bitrate_mb=$default_max_bitrate
+fi
+
+# bufsize is typically double the maxrate
+bufsize=$((max_bitrate_mb * 2))
+bufsize="${bufsize}M"
+max_bitrate="${max_bitrate_mb}M"
+
+timing_args=""
+if [[ $start_time != "" ]]; then
+    timing_args="-ss $start_time "
+fi
+if [[ $end_time != "" ]]; then
+    if [[ $start_time == "0" && $end_time == "0" ]]; then
+        # We treat a start and end with 0 values as no op.
+        timing_args=""
+    elif [[ $end_time != "0" ]]; then
+        # Handle having a start time but end time is set to 0, can just ignore it and it'll use the remainder of the video.
+        timing_args+="-to $end_time"
+    fi
+fi
+
+printf "\n${YELLOW}${BOLD}Trimming '$filename.$extension' | output: $output | start: $start_time | end: $end_time | crf: $target_crf | max rate: $max_bitrate | buffer size: $bufsize ${NORMAL}\n"
+
+# You might have issues if the file has multiple video streams or embedded
+# subtitles. The -map 0 arg is typically given when copying a video stream, but
+# I'm not sure if it's appropriate to use here. If you want to target one of
+# the video streams then use `-map 0:v:0` and if you want to re-encode
+# subtitles then include `-c:s mov_text` with either of the `-map` args.
+
+# -preset 3 and 4 are the fastest on my 3080 and have the same output file
+# size. p3 seems slightly faster. Apparently 7 is the best for 30 series
+# according to chatgpt (lol) but it was slow and compressed.
+
+# -accurate_seek doesn't seem to be needed when -ss is after -i, only when -ss
+# is before -i. Having -ss after is apparently a way of enabling accurate seeking.
+# The catch is that if the trim doesn't start at 0, it can be a long wait before
+# the encoder gets to the portion you want to start trimming from. To speed this up
+# we are putting -ss and -accurate_seek before -i  ... the video duration might be
+# slightly off from this but so far I haven't seen any seeking issues. If they come
+# up then we can move -ss to after -i again and delete -accurate_seek.
+
+# I'm using -rc:v vbr -cq:v 20 (higher = more compression) to have a variable
+# bit-rate with a quality target. This gives us a good looking re-encoding that
+# does a good job preserving the quality of the source video (at least for
+# twitch streams I'm trimming) but the bitrate might be higher or lower than
+# the source. The quality metric will fluctuate during encoding because NVENC
+# does't use a fixed quantization parameter. -cq:v is a target, not a constraint.
+# So you can have quite the fluctuating (or high) bitrate with these two params.
+# In order to set a birate cap that is prioritized over visual fidelity, we can
+# add in:
+#   -maxrate:v -bufsize:v
+#   (with bufsize typically being double the maxrate)
+#
+# Using this with the vbr and crf params tells the NVENC encoder to try to
+# encode at a perceptual quality level around CQ=20 but keep the bitrate under
+# 6000 kbps (constrained VBR). If a scene is too complex to maintain CQ=20
+# within the bitrate cap, the encoder will:
+#   * Raise the quantizer (lower quality) to obey the -maxrate
+#   * Result: CQ metric fluctuates upward
+# If a scene is simple:
+#   * Encoder can exceed CQ=20 (e.g. better quality) while staying under maxrate
+#   * Result: CQ metric fluctuates downward
+#
+# To have a mostly fixed bitrate with no variable quality, use trim-video-target-rate
+
+time ffmpeg -y -stats -loglevel level+error -hwaccel cuda -hwaccel_output_format cuda $timing_args -accurate_seek -i "$filename.$extension" -c:v h264_nvenc -profile:v high -preset 3 -rc:v vbr -cq:v $target_crf -maxrate:v $max_bitrate -bufsize:v $bufsize -c:a copy -movflags +faststart "$output"
+
+printf "\n${GREEN}${BOLD}Finished trimming${NORMAL}\n\n"
+

dotfiles/windows/custom_hosts_list.txt

@@ -59,18 +59,18 @@
 127.0.0.1 www.wip2.adobe.com www.wip3.adobe.com www.wip4.adobe.com wwis-dubc1-vip60.adobe.com crl.verisign.net CRL.VERISIGN.NET ood.opsource.net
 
 # Block Facebook
-127.0.0.1 www.facebook.com
+#127.0.0.1 www.facebook.com
-127.0.0.1 facebook.com
+#127.0.0.1 facebook.com
-127.0.0.1 static.ak.fbcdn.net
+#127.0.0.1 static.ak.fbcdn.net
-127.0.0.1 www.static.ak.fbcdn.net
+#127.0.0.1 www.static.ak.fbcdn.net
-127.0.0.1 login.facebook.com
+#127.0.0.1 login.facebook.com
-127.0.0.1 www.login.facebook.com
+#127.0.0.1 www.login.facebook.com
-127.0.0.1 fbcdn.net
+#127.0.0.1 fbcdn.net
-127.0.0.1 www.fbcdn.net
+#127.0.0.1 www.fbcdn.net
-127.0.0.1 fbcdn.com
+#127.0.0.1 fbcdn.com
-127.0.0.1 www.fbcdn.com
+#127.0.0.1 www.fbcdn.com
-127.0.0.1 static.ak.connect.facebook.com
+#127.0.0.1 static.ak.connect.facebook.com
-127.0.0.1 www.static.ak.connect.facebook.com
+#127.0.0.1 www.static.ak.connect.facebook.com
 
 #----------------------------------------------
 

dotfiles/windows/disable-folder-type-auto-discovery.reg

@@ -0,0 +1,4 @@
+Windows Registry Editor Version 5.00
+
+[HKEY_CURRENT_USER\SOFTWARE\Classes\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\Shell]
+"FolderType"="NotSpecified"