Encodes videos to AV1 (libsvtav1) for high efficiency
Converts audio to Opus for excellent quality at low bitrates
Automatically detects video properties (resolution, frame rate, interlacing, anamorphic content)
Applies appropriate filters for interlaced and anamorphic content
Preserves and embeds metadata
Integrates with OMDB API for automatic metadata fetching
Generates shell scripts for encoding commands
Supports multiple audio and subtitle streams

Prerequisites

Deno v1.0 or higher
FFmpeg with libsvtav1 support
FFprobe (usually bundled with FFmpeg)

Installation

Clone the repository:

git clone <repository-url>
cd videenc_ts

Ensure you have Deno installed:
```
deno --version
```
Ensure you have FFmpeg with libsvtav1 installed:
```
ffmpeg -version
ffmpeg -h encoder=libsvtav1
```

Usage

Basic Usage

./videnc -i <input_video_file>

This will analyze the video and generate a shell script (encode.sh or encode_N.sh) containing the FFmpeg command for encoding.

With OMDB Metadata

To use OMDB metadata:

Get an API key from OMDB API
Add it to your settings file at ~/.config/videnc/settings.json:
```
{
  "omdb_api_key": "your_api_key_here"
}
```
Run the encoder with a video file:
```
./videnc -i <input_video_file>
```
When prompted, enter the IMDb ID for the video (e.g., tt0111161 for The Shawshank Redemption)

Building

You can build the application in two ways:

Using Make

make build

Using Deno Compile

deno compile --allow-all --output ./videnc ./src/main.ts

Both methods will create a standalone executable named videnc.

How It Works

Video Analysis: Uses FFprobe to analyze the input video file and extract technical information
Metadata Fetching: Optionally fetches metadata from OMDB API using the provided IMDb ID
Profile Selection: Automatically selects encoding profiles based on video resolution:
- DVD profile for videos with less than 1 megapixel
- BluRay profile for higher resolution videos
Command Generation: Creates an optimized FFmpeg command with appropriate settings for:
- Video encoding (AV1 with libsvtav1)
- Audio encoding (Opus)
- Subtitle handling (copy)
- Metadata embedding
- Filters for interlaced and anamorphic content
Script Creation: Generates a shell script with the encoding command

Encoding Profiles

DVD Profile

CRF: 29
Preset: 2
Film Grain: 5

BluRay Profile

CRF: 27
Preset: 2
Film Grain: 5

Example Generated Command

ffmpeg \
  -hide_banner \
  -i "input_video.mp4" \
  -map_metadata -1 \
  -map 0:v \
  -c:v libsvtav1 \
  -pix_fmt yuv420p10le \
  -crf 27 \
  -svtav1-params keyint=120:tune=0:film-grain=5:scd=1:film-grain-denoise=1:enable-overlays=1:enable-qm=1:qm-min=0:qm-max=15 \
  -preset 2 \
  -vf "bwdif=mode=0,scale=iw*sar:ih:lanczos,setsar=1,scale=-2:ih:lanczos" \
  -map 0:a:0 \
  -c:a:0 libopus \
  -metadata:s:a:0 language=eng \
  -disposition:a:0 default \
  -map 0:s:0 \
  -c:s:0 copy \
  -metadata:s:s:0 language=eng \
  -disposition:s:0 -1 \
  "output_video.av1.mkv"

License

This project is licensed under the MIT License - see the LICENSE file for details.