How to download WWDC2021 videos and subtitles

The scripts for previous WWDC are here https://iphonesdkdev.blogspot.com/2020/10/how-to-download-wwdc2020-videos-and.html

https://iphonesdkdev.blogspot.com/2017/07/how-to-fetch-wwdc-2017-video-subtitle.html

Create and Run this script wwdc2021_fetch_srt.sh to fetch WWDC2021 subtitle

wwdc2021_fetch_en.srt.sh    Select all

#!/bin/bash # @Last Modified by: javacom # @Last Modified time: 2021-06-10 WWDC_YEAR=2021; # WWDC_SESSION_PREFIX=https://developer.apple.com/videos/play/wwdc$WWDC_YEAR; WWDC_LOCAL_DIR=$(basename $WWDC_SESSION_PREFIX); detect_video_m3u8 () { local session_url=$WWDC_SESSION_PREFIX/$SESSION_ID/; local session_html=$(curl -s $session_url); local video_url=$(echo "$session_html" | grep .m3u8 | grep $SESSION_ID | head -n1 | sed "s#.*\"\(https://.*m3u8\)\".*#\1#"); echo "$session_html" | grep .mp4 | grep $SESSION_ID | sed "s#.*\"\(https://.*mp4\).*\".*#\1#" | while read mp4_url; do local mp4_filename=$(basename $mp4_url | cut -d. -f1); local srt_filename=$mp4_filename.en.srt; # local srt_filename=$mp4_filename.zh.srt; echo "> Subtitle local: $WWDC_LOCAL_DIR/$srt_filename" >&2; > $WWDC_LOCAL_DIR/$srt_filename; done echo "$video_url"; echo "> Video: $video_url" >&2; } detect_subtitle_m3u8 () { local video_url=$1; # en subtitle local subtitle_uri=$(curl -s $video_url | grep "LANGUAGE=\"eng\"" | grep "TYPE=SUBTITLES" | sed "s#.*URI=\"\(.*\)\"#\1#" | sed "s#.FORCED=NO##"); # zh subtitle #local subtitle_uri=$(curl -s $video_url | grep "LANGUAGE=\"zh\"" | sed "s#.*URI=\"\(.*\)\"#\1#"); local subtitle_url=$subtitle_uri; [[ "$subtitle_uri" != http* ]] && { subtitle_url=$(dirname $video_url)/$subtitle_uri; } echo "$subtitle_url"; echo "> Subtitle: $subtitle_url" >&2; } download_subtitle_contents () { local subtitle_url=$1; echo "> Downloading... " local subtitle_base_url=$(dirname $subtitle_url); curl -s $subtitle_url | grep "webvtt" | while read webvtt; do local subtitle_webvtt=$subtitle_base_url/$webvtt; #echo "- get $subtitle_webvtt"; local subtitle_content=$(curl -s $subtitle_webvtt); # en subtitle ls $WWDC_LOCAL_DIR/"wwdc$WWDC_YEAR"-"$SESSION_ID"*.en.srt | while read srt_file; do # zh subtitle # ls $WWDC_LOCAL_DIR/"wwdc$WWDC_YEAR"-"$SESSION_ID"*.zh.srt | while read srt_file; do echo "$subtitle_content" >> $srt_file; done done } main () { [ ! -d $WWDC_LOCAL_DIR ] && { mkdir $WWDC_LOCAL_DIR; } #Year 2020/2021 change {3\} to {3,5\} curl -s $WWDC_SESSION_PREFIX | grep /videos/play/wwdc$WWDC_YEAR | sed "s#.*/videos/play/wwdc$WWDC_YEAR/\([0-9]\{3,5\}\).*#\1#" | sort | uniq | while read SESSION_ID; do #echo "SESSION_ID is" $SESSION_ID local video_url=$(detect_video_m3u8 $SESSION_ID); local subtitle_url=$(detect_subtitle_m3u8 $video_url); download_subtitle_contents $subtitle_url; done } main;

Run this shell script to format as SRT subtitle

shellscript.sh    Select all

WWDC_YEAR=2021; # cd wwdc$WWDC_YEAR mkdir -p sd mkdir -p hd for i in *_sd.??.srt; do sed -e '/WEBVTT/d;/X-TIMESTAMP/d;s/align.middle line.*$//;' $i | awk '/^[0-9]{2}:[0-9]{2}:/ {seen[$0]++; skipduplicated=0} {if (seen[$0]>1) skipduplicated=1; if (!skipduplicated) print $0}' | awk -v RS="" '{gsub("\n", "-Z"); print}' | awk '$0 !~/^WEB/ {print $0}' | uniq | awk '{printf "\n%s-Z%s", NR,$0 }' | awk -v ORS="\n\n" '{gsub("-Z", "\n"); print}' | sed -e 's/.A:middle$//g;s/&gt;/>/g;s/&lt;/</g;1,2d;' > sd/$i; done for i in *_hd.??.srt; do sed -e '/WEBVTT/d;/X-TIMESTAMP/d;s/align.middle line.*$//;' $i | awk '/^[0-9]{2}:[0-9]{2}:/ {seen[$0]++; skipduplicated=0} {if (seen[$0]>1) skipduplicated=1; if (!skipduplicated) print $0}' | awk -v RS="" '{gsub("\n", "-Z"); print}' | awk '$0 !~/^WEB/ {print $0}' | uniq | awk '{printf "\n%s-Z%s", NR,$0 }' | awk -v ORS="\n\n" '{gsub("-Z", "\n"); print}' | sed -e 's/.A:middle$//g;s/&gt;/>/g;s/&lt;/</g;1,2d;' > hd/$i; done

Run this script wwdc2021_fetch_mp4.sh to download all mp4 (HD and SD) videos (also works for 2021)

wwdc2021_fetch_mp4.sh    Select all

#!/bin/bash # @Last Modified by: javacom # @Last Modified time: 2021-06-10 WWDC_YEAR=2021; # WWDC_SESSION_PREFIX=https://developer.apple.com/videos/play/wwdc$WWDC_YEAR; WWDC_LOCAL_DIR=$(basename $WWDC_SESSION_PREFIX); download_mp4_video () { local session_url=$WWDC_SESSION_PREFIX/$SESSION_ID/; local session_html=$(curl -s $session_url); local video_url=$(echo "$session_html" | grep .m3u8 | grep $SESSION_ID | head -n1 | sed "s#.*\"\(https://.*m3u8\)\".*#\1#"); echo "$session_html" | grep .mp4 | grep $SESSION_ID | sed "s#.*\"\(https://.*mp4\).*\".*#\1#" | while read mp4_url; do local mp4_filename=$(basename $mp4_url); if [ -e $WWDC_LOCAL_DIR/$mp4_filename ] then echo "> MP4 already existed : $WWDC_LOCAL_DIR/$mp4_filename" >&2; echo "> To resume broken download use curl -C - --connect-timeout 1200 -o $WWDC_LOCAL_DIR/$mp4_filename $mp4_url" >&2; echo " " >&2; else echo "> MP4 Downloading... : $mp4_url" >&2; curl --connect-timeout 120 -o $WWDC_LOCAL_DIR/$mp4_filename $mp4_url fi done } main () { [ ! -d $WWDC_LOCAL_DIR ] && { mkdir $WWDC_LOCAL_DIR; } #Year 2020/2021 change {3\} to {3,5\} curl -s $WWDC_SESSION_PREFIX | grep /videos/play/wwdc$WWDC_YEAR | sed "s#.*/videos/play/wwdc$WWDC_YEAR/\([0-9]\{3,5\}\).*#\1#" | sort | uniq | while read SESSION_ID; do download_mp4_video $SESSION_ID; done } main;

Run this script to rename the video or subtitles to proper title (HD & SD) videos

wwdc2021_rename_title.sh    Select all

#!/bin/sh # @Last Modified by: javacom # @Last Modified time: 2021-6-10 # For WWDC2021 video files， VIDEO=sd or VIDEO=hd WWDC_YEAR=2021; VIDEO=sd; curl -s https://developer.apple.com/videos/wwdc${WWDC_YEAR}/ | grep -B1 "video-title" | sed -e "s#[[:space:]]\{10,\}<a href=./videos/play/wwdc202./\([0-9]\{3,5\}\).*#\[ -f \"wwdc${WWDC_YEAR}-\1_${VIDEO}.mp4\" \] \&\& mv \"wwdc${WWDC_YEAR}-\1_${VIDEO}.mp4\" \"wwdc${WWDC_YEAR}-\1_${VIDEO}_#" -e "s/[\@:’\'\,?]//g" -e "s/\"\(The.*\)\"/\1/" -e 's#.*video-title..\(.*\)\(</h4>\)#\1.mp4"#' -e '/--/d' | sed '/^\[ -f/{N;s/\n//;}' | sed "s#[\/@:’\'\,]#_#g" | /bin/bash # For WWDC2021 English subtitle files， VIDEO=sd or VIDEO=hd WWDC_YEAR=2021; VIDEO=sd; curl -s https://developer.apple.com/videos/wwdc${WWDC_YEAR}/ | grep -B1 "video-title" | sed -e "s#[[:space:]]\{10,\}<a href=./videos/play/wwdc202./\([0-9]\{3,5\}\).*#\[ -f \"wwdc${WWDC_YEAR}-\1_${VIDEO}.en.srt\" \] \&\& mv \"wwdc${WWDC_YEAR}-\1_${VIDEO}.en.srt\" \"wwdc${WWDC_YEAR}-\1_${VIDEO}_#" -e "s/[\@:’\'\,?]//g" -e "s/\"\(The.*\)\"/\1/" -e 's#.*video-title..\(.*\)\(</h4>\)#\1.en.srt"#' -e '/--/d' | sed '/^\[ -f/{N;s/\n//;}' | sed "s#[\/@:’\'\,]#_#g" | /bin/bash

# Example nohup commnad for Linux Download

nohup bash -c 'cd $HOME/Downloads/WWDC/; ./wwdc2021_fetch_mp4.sh' &> nohup.wwdc2021.mp4.out &

nohup bash -c 'cd $HOME/Downloads/WWDC/; ./wwdc2021_fetch_en.srt.sh' &> nohup.wwdc2021.en.srt.out &

# or use screen utility to download
screen -S wwdcdownloadmp4
bash wwdc2021_fetch_mp4.sh