Use ffpmeg to convert h.265 to h.265

convert.pl

#!/usr/bin/perl

use strict;
use warnings;

open DIR, "ls -1 |";
while (<DIR>)
{
        chomp;
        next if ( -d "$_"); # skip directories
        next unless ( -r "$_"); # if it's not readable skip it!
        my $file = $_;
        open PROBE, "ffprobe -show_streams -of csv '$file' 2>/dev/null|" or die ("Unable to launch ffmpeg for $file! ($!)");
        my ($v, $a, $s, @c) = (0,0,0);
        while (<PROBE>)
        {
                my @streaminfo = split(/,/, $_);
                push(@c, $streaminfo[2]) if ($streaminfo[5] eq "video");
                $a++ if ($streaminfo[5] eq "audio");
                $s++ if ($streaminfo[5] eq "subtitle");
        }
        close PROBE;
        $v = scalar @c;
        if (scalar @c eq 1 and $c[0] eq "ansi")
        {
                warn("Text file detected, skipping...\n");
                next;
        }
        warn("$file: Video Streams: $v, Audio Streams: $a, Subtitle Streams: $s, Video Codec(s): " . join (", ", @c) . "\n");
        if (scalar @c > 1)
        {
                warn("$file has more than one video stream, bailing!\n");
                next;
        }
        if ($c[0] eq "hevc")
        {
                warn("HEVC detected for $file ...converting to AVC...\n");
                system("mkdir -p h265");
                my @params = ("-hide_banner", "-threads 2");
                # Map streams
                push(@params, "-map 0") if ($a > 1 or $s > 1 or $v > 1);
                # Map audio stream 2 instead of defaults
                # push(@params, "-map 0:0 -map 0:2 -map 0:2 -map 0:4 -map 0:4");
                push(@params, "-c:a copy") if ($a);
                push(@params, "-c:s copy") if ($s);
                push(@params, "-c:v libx264 -pix_fmt yuv420p") if ($v);
                if (system("mv '$file' 'h265/$file'"))
                {
                        warn("Error moving $file -> h265/$file\n");
                        next;
                }
                warn("Running command: ffmpeg -xerror -i 'h265/$file' " . join(" ", @params) . " '$file'");
                if (system("ffmpeg -xerror -i 'h265/$file' " . join(" ", @params) . " '$file' 2>/dev/null"))
                {
                        warn("FFMPEG ERROR.  Cannot convert $file restoring original...\n");
                        system("mv 'h265/$file' '$file'");
                        next;
                }
        } else {
                warn("$file doesn't appear to need converting... Skipping...\n");
        }
}
close DIR;