local f="$1"

local errlog="$TMPDIR/$(uuidgen 2>/dev/null || date +%s%N).log"

# 1) Quick container/stream sanity check (ffprobe)

if ! ffprobe -v error -hide_banner \

-select_streams v:a:s \

-show_entries stream=index \

-of csv=p=0 "$f" > /dev/null 2>&1; then

printf '%s\n' "$f" >> "$OUTFILE"

return

fi

# 2) Full decode to null muxer to catch decode-time errors:

# -v error => only show errors (suppress warnings/info)

# -xerror => abort on first error (non-zero exit)

# -err_detect explode+crccheck => be strict on bitstream issues

# -f null - => decode but don’t write output

# -nostdin, -nostats => avoid interactive prompts / noise

if ! ffmpeg -v error -hide_banner -nostats -nostdin \

-err_detect explode+crccheck -xerror \

-i "$f" -f null - 2> "$errlog"; then

# Non-zero exit: error detected

printf '%s\n' "$f" >> "$OUTFILE"

return

fi

# Sometimes ffmpeg exits 0 but still prints lines at error level—

# we already filtered to -v error, so any output here is an error.

if [[ -s "$errlog" ]]; then

printf '%s\n' "$f" >> "$OUTFILE"

fi