Handle single frame inputs similar to yadif (e.g.,
https://github.com/FFmpeg/FFmpeg/commit/0f9f24c9cfd291c7ece4d3bad64fdf06d107168a
and
https://github.com/FFmpeg/FFmpeg/commit/681e008d06d2241d50abe6316c908a184ddc5942)
Example:
ffmpeg -r 1 -t 1 -i fate-suite/ffmpeg-synthetic/vsynth1/%02d.pgm -vf
idet,showinfo -f null -y /dev/null
Previously:
Output file is empty, nothing was encoded (check -ss / -t / -frames
parameters if used)
[Parsed_idet_0 @ 0x36389d0] Repeated Fields: Neither: 0 Top: 0
Bottom: 0
After patch:
[Parsed_showinfo_1 @ 0x1909810] n:0 pts:0 pts_time:0 pos:-1 fmt:gray sar:0/1
s:352x432 ...
[Parsed_idet_0 @ 0x18f9bb0] Repeated Fields: Neither: 1 Top: 0
Bottom: 0
Fate looks good.
Signed-off-by: Neil Birkbeck <neil.birkb...@gmail.com>
---
libavfilter/vf_idet.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/libavfilter/vf_idet.c b/libavfilter/vf_idet.c
index ed21eea..9a25042 100644
--- a/libavfilter/vf_idet.c
+++ b/libavfilter/vf_idet.c
@@ -241,11 +241,12 @@ static int filter_frame(AVFilterLink *link, AVFrame
*picref)
idet->cur = idet->next;
idet->next = picref;
- if (!idet->cur)
- return 0;
+ if (!idet->cur &&
+ !(idet->cur = av_frame_clone(idet->next)))
+ return AVERROR(ENOMEM);
if (!idet->prev)
- idet->prev = av_frame_clone(idet->cur);
+ return 0;
if (!idet->csp)
idet->csp = av_pix_fmt_desc_get(link->format);
@@ -284,7 +285,7 @@ static int request_frame(AVFilterLink *link)
} else if (ret < 0) {
return ret;
}
- } while (!idet->cur);
+ } while (!idet->prev);
return 0;
}
--
2.2.0.rc0.207.ga3a616c
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