diff options
| -rwxr-xr-x | TOOLS/idet.sh | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/TOOLS/idet.sh b/TOOLS/idet.sh new file mode 100755 index 0000000000..8e1580cbb8 --- /dev/null +++ b/TOOLS/idet.sh @@ -0,0 +1,161 @@ +#!/bin/sh + +case "$0" in + */*) + MYDIR=${0%/*} + ;; + *) + MYDIR=. + ;; +esac + +: ${MPV:=mpv} +: ${ILDETECT_MPV:=$MPV} +: ${ILDETECT_MPV:=$MPV} +: ${ILDETECT_MPVFLAGS:=--start=35% --length=35} +: ${ILDETECT_DRY_RUN:=} +: ${ILDETECT_QUIET:=} +: ${ILDETECT_RUN_INTERLACED_ONLY:=} +: ${ILDETECT_FORCE_RUN:=} +: ${MAKE:=make} + +# exit status: +# 0 progressive +# 1 telecine +# 2 interlaced +# 8 unknown +# 16 detect fail +# 17+ mpv's status | 16 + +testfun() +{ + $ILDETECT_MPV "$@" \ + --vf=lavfi="[idet]" --msg-level ffmpeg=v \ + --o= --vo=null --no-audio --untimed \ + $ILDETECT_MPVFLAGS \ + | { if [ -n "$ILDETECT_QUIET" ]; then cat; else tee /dev/stderr; fi } \ + | grep "Parsed_idet_0: Multi frame detection: " | tail -n 1 +} + +judge() +{ + out=`testfun "$@"` + + tff=${out##* TFF:}; tff=${tff%% *} + bff=${out##* BFF:}; bff=${bff%% *} + progressive=${out##* Progressive:}; progressive=${progressive%% *} + undetermined=${out##* Undetermined:}; undetermined=${undetermined%% *} + + case "$tff$bff$progressive$undetermined" in + *[!0-9]*) + echo >&2 "ERROR: Unrecognized idet output: $out" + exit 16 + ;; + esac + + interlaced=$((bff + tff)) + determined=$((interlaced + progressive)) + + if [ $undetermined -gt $determined ] || [ $determined -lt 250 ]; then + echo >&2 "ERROR: Less than 50% or 250 frames are determined." + [ -n "$ILDETECT_FORCE_RUN" ] || exit 8 + echo >&2 "Assuming interlacing." + if [ $tff -gt $((bff * 10)) ]; then + verdict=interlaced-tff + elif [ $bff -gt $((tff * 10)) ]; then + verdict=interlaced-bff + else + verdict=interlaced + fi + elif [ $((interlaced * 20)) -gt $progressive ]; then + # At least 5% of the frames are interlaced! + if [ $tff -gt $((bff * 10)) ]; then + verdict=interlaced-tff + elif [ $bff -gt $((tff * 10)) ]; then + verdict=interlaced-bff + else + echo >&2 "ERROR: Content is interlaced, but can't determine field order." + [ -n "$ILDETECT_FORCE_RUN" ] || exit 8 + echo >&2 "Assuming interlacing with default field order." + verdict=interlaced + fi + else + # Likely progrssive. + verdict=progressive + fi + + echo "$verdict" +} + +judge "$@" +case "$verdict" in + progressive) + [ -n "$ILDETECT_DRY_RUN" ] || \ + [ -n "$ILDETECT_RUN_INTERLACED_ONLY" ] || \ + $ILDETECT_MPV "$@" + r=$? + [ $r -eq 0 ] || exit $(($r | 16)) + exit 0 + ;; + interlaced-tff) + judge "$@" --vf-pre=pullup --field-dominance=top + case "$verdict" in + progressive) + [ -n "$ILDETECT_DRY_RUN" ] || \ + $ILDETECT_MPV "$@" --vf-pre=pullup --field-dominance=top + r=$? + [ $r -eq 0 ] || exit $(($r | 16)) + exit 1 + ;; + *) + [ -n "$ILDETECT_DRY_RUN" ] || \ + $ILDETECT_MPV "$@" --vf-pre=yadif --field-dominance=top + r=$? + [ $r -eq 0 ] || exit $(($r | 16)) + exit 2 + ;; + esac + ;; + interlaced-bff) + judge "$@" --vf-pre=pullup --field-dominance=bottom + case "$verdict" in + progressive) + [ -n "$ILDETECT_DRY_RUN" ] || \ + $ILDETECT_MPV "$@" --vf-pre=pullup --field-dominance=bottom + r=$? + [ $r -eq 0 ] || exit $(($r | 16)) + exit 1 + ;; + *) + [ -n "$ILDETECT_DRY_RUN" ] || \ + $ILDETECT_MPV "$@" --vf-pre=yadif --field-dominance=bottom + r=$? + [ $r -eq 0 ] || exit $(($r | 16)) + exit 2 + ;; + esac + ;; + interlaced) + judge "$@" --vf-pre=pullup + case "$verdict" in + progressive) + [ -n "$ILDETECT_DRY_RUN" ] || \ + $ILDETECT_MPV "$@" --vf-pre=pullup + r=$? + [ $r -eq 0 ] || exit $(($r | 16)) + exit 1 + ;; + *) + [ -n "$ILDETECT_DRY_RUN" ] || \ + $ILDETECT_MPV "$@" --vf-pre=yadif + r=$? + [ $r -eq 0 ] || exit $(($r | 16)) + exit 2 + ;; + esac + ;; + *) + echo >&2 "ERROR: Internal error." + exit 16 + ;; +esac |