3-Heights PDF Analysis & Repair Tool vs Kernel Video Repair

3-Heights PDF Analysis & Repair Tool analyzes damaged PDF documents and attempts to repair or recover their contents. It inspects objects, page trees, and content streams, then can report error types, codes, descriptions, page numbers, and event counts, with messages written to a log. Repair options include restoring data streams, fonts, cross-reference tables, pages, and images; recovery can rebuild a PDF from legible content that remains. It reads encrypted PDFs and can encrypt restored files with permission flags. Inputs include PDF 1.x, PDF 2.0, and PDF/A-1, PDF/A-2, and PDF/A-3; the manuals cite ISO 32000-1 and ISO 32000-2 conformance. Pdftools documents Shell command-line and API variants, with Windows, Linux, and macOS support and local repair delivery. Batch repair is supported. The product is paid, with pricing on request and a 30-day trial. The evaluation version analyzes files but disables Save As, so repaired or recovered files cannot be saved or viewed without the full version. The vendor cautions that some files and image compression methods cannot be recovered.

Kernel Video Repair repairs corrupt, damaged, inaccessible or unplayable video files on Windows and macOS. It supports more than 25 formats, including MP4, MOV, MKV, ProRes, MPEG, MTS and MXF, and can repair multiple files in one operation. For severely corrupted footage, a healthy reference video can supply a metadata template, including format, encoding and bitrate. The software supports high-resolution repair, including 4K, 8K, VR and 360° video; the vendor says there is no file-size limitation. Repaired files can be saved to a chosen location on the user’s system. The demo repairs videos and allows a free preview of the first 30 seconds of each output. SD card videos must first be transferred to a Windows computer. A Home license for two computers is listed at $29, paid once, while the pricing note says from $49/yr. The vendor offers Home and Corporate licenses, with Corporate covering unlimited computers, and advertises lifetime free support.