Convert AVI to TXT

You can find various transcription tools that are fully capable of converting Audio Video Interleave files directly to Plain Text files (.avi to .txt conversion); in case you're seeking to transcribe audio (speech) from AVI videos in order to create a plain TXT file.

You might try using software like VoiceBase or Voice Notebook for a trustworthy transcription. However, such tools aren't always exact, so you might need to do some manual editing.