Step 1: Upload your AVI files using the button above or by drag and drop.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Download your converted FLAC files.
AVI to FLAC Conversion FAQ
How do I extract audio from a AVI video as FLAC?
+
Upload your AVI video. PDF.to pulls the audio track out, encodes it to FLAC, and gives you a FLAC-only download. The video stream is discarded.
Will the FLAC output have the same sample rate as the source?
+
Yes by default. We do not resample unless you explicitly request it. 48 kHz is preserved from movie sources, 44.1 kHz from music sources.
Is the AVI to FLAC extraction free?
+
Yes, within the free size limit. PRO supports much larger AVI files and parallel batch extraction.
Does PDF.to read or store my AVI content?
+
No. Nobody reads the contents of your AVI, and nothing is shared. The uploaded AVI and the resulting FLAC are deleted from our servers automatically about 24 hours after the conversion, which leaves time to download the result.
Can I batch-extract audio from multiple AVI files?
+
Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
Does the converter work on streaming video URLs?
+
No — PDF.to converts files you upload, not third-party stream URLs. Download the AVI legally first, then upload it for FLAC extraction.
Why is the FLAC file much smaller than the AVI video?
+
Because the video stream (typically 90%+ of file size) is discarded. Only the audio track ends up in the FLAC, which is why it can drop from gigabytes to a few megabytes.
