Audio Processing
4 articles
Audio Format Conversion — WAV, MP3, AAC, and FLAC
Convert audio formats with FFmpeg: WAV, MP3, AAC, FLAC. Covers -c:a encoder, -b:a vs -q:a quality control, and -ar sample rate conversion.
FFmpeg Fix Audio Sync — -itsoffset, adelay, and -async Explained
Fix audio-video sync drift (lip sync issues) with FFmpeg: -itsoffset for lossless timestamp shift, adelay filter for millisecond-precise audio delay, -async for auto-correction, measuring drift with ffprobe, five error fixes, and five FAQ answers.
FFmpeg Extract Audio from Video — MP3, AAC, WAV, and FLAC Commands
Extract audio from video with FFmpeg: lossless copy (-c:a copy) vs re-encoding and when to use each, MP3/AAC/FLAC/WAV format-specific commands, multi-track selection with -map, time-range extraction, batch processing, and five common error fixes.
Loudness Normalization — EBU R128 with the loudnorm Filter
Normalize audio to EBU R128 standard with FFmpeg loudnorm filter. Single-pass and two-pass measurement modes. Key parameters: I (integrated LUFS), TP, and LRA.