init

.gitignore

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+test/
+scripts/nginx/nginx/

README.md

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+# stream-relay
+
+> Collection of tools and scripts to help in restreaming content

scripts/nginx/build.sh

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+#!/bin/bash
+
+set -e
+
+tmpdir="$(mktemp -d)"
+prefix="$1"
+
+if [ -z "$prefix" ]; then
+  prefix="$(pwd)/nginx"
+fi
+
+mkdir -p "$prefix"
+
+echo "Downloading nginx to $tmpdir"
+wget -qO- http://nginx.org/download/nginx-1.21.6.tar.gz | tar -xzv -C "$tmpdir"
+
+pushd "$tmpdir/nginx-1.21.6"
+
+  echo "Configuring nginx"
+  ./configure \
+    --prefix="$prefix" \
+    --with-http_ssl_module --with-threads --with-http_realip_module
+
+  echo "Compiling nginx"
+  make -j "$(nproc)"
+
+  echo "Installing nginx"
+  make install
+
+popd # "$tmpdir/nginx-1.21.6"
+
+echo "Cleaning up"
+rm -rf "$tmpdir"

scripts/restream.sh

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+#!/bin/bash
+
+hls_flags="-hls_time 1 -hls_list_size 30"
+
+rtmp2hls() {
+  # Copy the RTMP stream to HLS
+  hls_flags=$(make_hls_flags "$1")
+  ffmpeg \
+    -re -f flv -listen 1 -i "$1" -c copy -bsf:a aac_adtstoasc \
+    -f hls $hls_flags -hls_segment_filename "$2/%d.ts" \
+    "$2/index.m3u8"
+}
+
+rtmp2hls_transcode() {
+  # Encode the stream into multiple resolutions
+  ffmpeg -re -f flv -listen 1 -i "$1" \
+    -map 0:v:0 -map 0:a:0 \
+    -map 0:v:0 -map 0:a:0 \
+    -map 0:v:0 -map 0:a:0 \
+    -map 0:v:0 -map 0:a:0 \
+    -c:v:0 copy -b:v:0 5600k -c:a:0 copy -b:a:0 128k \
+    -c:v:1 libx264 -crf 18 -c:a:1 aac -ar:1 48000 \
+    -c:v:2 libx264 -crf 18 -c:a:2 aac -ar:2 44100 \
+    -c:v:3 libx264 -crf 18 -c:a:3 aac -ar:3 44100 \
+    -filter:v:1 'scale=-2:720' -b:a:1 128k \
+    -filter:v:2 'scale=-2:480' -b:a:2 128k \
+    -filter:v:3 'scale=-2:360' -b:a:3 128k \
+    -f hls \
+      -var_stream_map \
+      'v:0,a:0,name:1080p v:1,a:1,name:720p v:2,a:2,name:480p v:3,a:3,name:360p' \
+      $hls_flags \
+      -hls_segment_filename "$2/%v-%04d.ts" \
+      -master_pl_name "index.m3u8" \
+    "$2/index-%v.m3u8"
+}
+
+streamlink2rtmp() {
+  streamlink \
+    "$1" best -O \
+  | ffmpeg -i - -c copy -bsf:a aac_adtstoasc \
+    -f flv "$2"
+}
+
+hls_prog_copy() {
+  input="$1"
+  progs="$2"
+  outpath="$3"
+
+  imap=; omap=; a=0;
+  for p in $progs; do
+    imap="$imap -map p:$p";
+    omap="$omap v:$a,a:$a";
+    a=$((a+1));
+  done;
+
+  echo "input:$imap";
+  echo "output:$omap";
+  rm -rf "$outpath";
+  mkdir "$outpath";
+
+  ffmpeg -re -i "$input" \
+    $imap -c copy -v warning -stats \
+    -f hls -var_stream_map "$omap" $hls_flags \
+    -hls_segment_filename "$outpath/%v-%08d.ts" \
+    "$outpath/index-%v.m3u8"
+}