Powershell Script to transcode MP4 & MKV files to HEVC/AAC - Printable Version +- Jellyfin Forum (https://forum.jellyfin.org) +-- Forum: Off Topic (https://forum.jellyfin.org/f-off-topic) +--- Forum: Self-hosting & Homelabs (https://forum.jellyfin.org/f-self-hosting-homelabs) +--- Thread: Powershell Script to transcode MP4 & MKV files to HEVC/AAC (/t-powershell-script-to-transcode-mp4-mkv-files-to-hevc-aac)

Powershell Script to transcode MP4 & MKV files to HEVC/AAC - Maximus1 - 2023-11-07 Hello folks,  I needed space on the disks and have written one (two) script(s) in PowerShell to convert my MP4 and MKV files into HEVC/AAC. I decided to use Handbrake for Video and Audio Transcoding and FFmpeg for Audio Transcoding only because Handbrake has a better resulting quality at a lower file size. FFmpeg works better with multiple instances simultaneously. So FFmpeg was better for Audio transcoding. I would like to share the result with you. You need to install a PowerShell module called Get-MediaInfo Instructions on powershellgallery Warning!!   I Transcoded hundreds of files with no error, but this doesn't mean it will do the same at your PC.  Please take a look at the code and change it to your needs.     What does the 1st script do: Read the folder you choose, recursive into an Array. Checking for Codecs used in the Files. Deciding how to convert. Runs 1 instance of Handbrake and up to 5 FFmpeg instances at the same time. Runs on CPU only to get the best visual results. Setting different parameters for Movies and Series (Series are scaled to 720P if resolution >720P (-w 720 --keep-display-aspect)). Generating a ".ignore" file so Emby ignores the actual folder. Converting into same Directory, but not deleting old file. Checking if file was converted. The path of the currently converting file is written to a .txt file. Writing every step into the console. This Script removes all Audio tracks except the first one This Script removes all Subtitles How the script decides to convert: Checking for Codecs used in the Files If Audio not AAC and Video not HEVC → convert Video and Video (Handbrake) If Audio not AAC and Video is HEVC → convert Audio copy Video (FFmpeg) If Audio is AAC and Video not HEVC → convert Video copy Audio (Handbrake) If Audio is AAC and Video is HEVC → do nothing  Audio Transcoding (FFmpeg) : The script differentiates between Mono/Stereo and Surround Mono/Stereo : $aacbitrate = '128k'  (lower is possible, but not recommended) $aachz = '44100' Surround :  $aacbitrate = '256k' $aachz = '48000' Video Transcoding (Handbrake):  Handbrake Series :  -e x265 --encoder-preset medium -w 720 --keep-display-aspect --vfr --quality "$videoquality" -E "$handbrakeaudiocodec" -B "$handbrakeaudiobitrate" --normalize-mix "$handbrakenormalize" -i "$oldfile" -o "$newfile"" Handbrake Movie :  -e x265 --encoder-preset medium --vfr --quality "$videoquality" -E "$handbrakeaudiocodec" -B "$handbrakeaudiobitrate" --normalize-mix "$handbrakenormalize" -i "$oldfile" -o "$newfile"" Here is my 2nd Script. This Script cleans up after the 1st script has done his job. What does the 2nd script do: Read the folder you choose, recursive into an Array. Comparing old file and new file → duration and file size deleting old file if checks are OK Renaming new file to old file Checks for files maybe generated by Emby while transcoding  Deleting these files if found. Deleting ".ignore" file if found Counting Videos "cleaned/renamed" Counting Errors for file size and duration Writing every step into the console. Files to search for:    '.neu' + $file.Extension    '.nfo'    '.neu' + '.nfo'    '.neu-clearlogo.png'    '.neu-fanart.jpg'     '.neu-poster.jpg'     '.neu-discart.png'     '.neu-thumb.jpg'     '.neu-landscape.jpg'     '.neu-banner.jpg'     '.neu-clearart.png' Proof will come, I have to make something to clean :-)