ffmpeg -i corrupt.aac -c copy -f adts fixed.aac # Or wrap to M4A with new index: ffmpeg -i corrupt.aac -c copy -movflags +faststart fixed.m4a
Regardless of format, you will see one or more of these signs: Titanic Index Of Last Modified Mp4 Wma Aac Avi Fix
Note: If the header is destroyed, use -f wav to convert to a raw format first, then re-encode. ffmpeg -i corrupt
→ Never kill an encoding process mid-way. Use -movflags +faststart proactively. Titanic Index Of Last Modified Mp4 Wma Aac Avi Fix
(Classic tool)