Apex Media Toolbox
Subtitle Extractor & Audio Extractor Online
Extract embedded subtitle tracks from MP4, MKV, MOV, AVI, and WebM videos, export SRT subtitles, or extract MP3 and WAV audio directly from video files.
Core subtitle, audio, and video tools
Start with the extraction and conversion tasks that define Apex most clearly.
Subtitle Extraction
Extract existing embedded subtitle tracks from MP4, MKV, MOV, AVI, and WebM files, then export them as subtitle files such as SRT.
Audio Extraction
Extract audio from MP4, MOV, MKV, AVI, and WebM video files, then export it as MP3, WAV, AAC, FLAC, OGG, or M4A.
Video Format Conversion
Convert MP4, MOV, AVI, MKV, and WebM online when a platform, player, or editing workflow requires a different video format.
Audio Format Conversion
Convert MP3, WAV, AAC, FLAC, OGG, and M4A online when playback, editing, or upload workflows need a different audio format.
Extract SRT subtitles and MP3/WAV audio from video
Apex focuses on practical video and audio workflows. Use the subtitle extractor when a video already contains an embedded subtitle track, then export it as a reusable subtitle file such as SRT.
For audio workflows, extract audio from MP4, MOV, MKV, AVI, or WebM and export common formats such as MP3, WAV, AAC, FLAC, OGG, or M4A. Video and audio conversion tools are available as supporting steps when you need a different format or smaller file.
Select Tool
Image Tools
Image Compression
Compress image files with format, quality, and size controls
Image Format Conversion
Convert images between JPEG, PNG, WebP, AVIF, TIFF, BMP, and more
Background Removal
Remove simple backgrounds in the browser and export transparent results
Image Watermarking
Add text or logo watermarks with configurable position and opacity
Image Editing
Crop, rotate, flip, filter, and export images in different formats
Video Tools
Video Compression
Compress videos with adjustable quality, bitrate, and resolution
Video Format Conversion
Convert videos between MP4, AVI, MOV, MKV, WebM, FLV, WMV, and more
Subtitle Extraction
Extract existing embedded subtitle tracks; speech transcription is not included
Audio Tools
Audio Compression
Compress audio files with bitrate, sample rate, and channel controls
Audio Format Conversion
Convert audio between MP3, WAV, OGG, M4A, FLAC, AAC, WMA, and more
Audio Trimming
Trim audio with start and end times and optional format conversion
Audio Extraction
Extract audio tracks from video files