Deinterlace or denoise first?

Deinterlace, then denoise, then compress — compression last is the iron rule. Once the encoder welds comb lines and noise in, every later fix fights compression artifacts too.

Keep the raw capture files?

Recommended if disk allows: the raw capture is the master, and repair parameters can change later. Daily viewing and sharing run off the processed MP4.

Workflows 5 min read

After Digitizing VHS Tapes: Repair, Compress, Archive

Q: How small can home tapes get?

Static-heavy content compresses very well: CRF 22-24 typically halves the size with stable quality. Sample five minutes first, then batch the tape.

A capture box turning tape into a file is only half of digitization. The other half is file work: fix the scan lines and noise first, or you’ve just packaged the flaws into a modern format.

Capture is only the beginning

Tape captures arrive as high-bitrate files carrying every analog-era trait: interlacing comb across the frame, tape-grain noise, colors drifted by age. Leave them as-is and convert to MP4, and you have preserved the defects in a modern wrapper.

Set the goal honestly: home-tape digitization is not "restore to new" — it is "save it watchable". Repair targets structural defects (interlacing, noise) while keeping the period feel.

The repair order is not negotiable

First, deinterlace. The comb lines are a structural artifact of interlaced scanning — every frame split into two interleaved fields. Deinterlacing must precede compression: the encoder will weld the comb pattern into the picture as if it were content, and there is no clean input to fix afterwards.

Second, denoise. Tape grain comes from the medium; use light-to-medium strength — old footage has little detail to spare, and strong denoise smooths faces along with the snow. Third, compress. Reversing this order is the classic home-archive mistake: compress first, spot the comb lines after, and the whole pass starts over.

Compression numbers and archive discipline

Home footage is mostly static scenes — chatting, meals, locked-off cameras — so compression is highly efficient: CRF 22-24 typically halves the size with stable quality. Unsure? Compress a 5-minute sample, review, then batch the rest.

Archive discipline: one tape, one file, named with date and people ("1998-SpringFestival-Family") — findability a decade later comes from naming, not memory. Keep the processed MP4 for daily viewing; if disk allows, keep the pre-processing high-bitrate capture as the "master". And do not discard the tapes after capture: the tape still holds more information than any digital transcription — it is the final original.