On 08-10-2019 10:58 AM, Limin Wang wrote:
On Tue, Oct 08, 2019 at 10:02:25AM +0530, Gyan wrote:
On 08-10-2019 09:24 AM, [email protected] wrote:
From: Limin Wang <[email protected]>
How to tested it, please try with the following command:
./ffmpeg -f lavfi -i
"smptebars=duration=5:size=1280x720:rate=30,freezedetect=d=1:discard=0" -f
null -
frame= 150 fps=0.0 q=-0.0 Lsize=N/A time=00:00:05.00 bitrate=N/A speed= 234x
./ffmpeg -f lavfi -i
"smptebars=duration=5:size=1280x720:rate=30,freezedetect=d=1:discard=1" -f
null -
frame= 30 fps=0.0 q=-0.0 Lsize=N/A time=00:00:01.00 bitrate=N/A speed=59.7x
Signed-off-by: Limin Wang <[email protected]>
---
doc/filters.texi | 10 ++++++++++
libavfilter/vf_freezedetect.c | 8 +++++++-
2 files changed, 17 insertions(+), 1 deletion(-)
diff --git a/doc/filters.texi b/doc/filters.texi
index 333f502083..8aa7471f7e 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -10678,6 +10678,9 @@ timestamp of the first frame of the freeze. The
@code{lavfi.freezedetect.freeze_duration} and
@code{lavfi.freezedetect.freeze_end} metadata keys are set on the first frame
after the freeze.
+In addition, you can choose to discard the freezen frames instead of report
+by metadata. Please note the first few freezen frames (the detection interval)
+won't be dropped for the filter doesn't buffer any frames.
freezen --> frozen
OK, will fix it.
You could suggest that users apply tpad at start of stream so that
all frozen frames can be removed. Afterwards, users can trim out
those added frames.
Test this if you add it.
I'm not familar with tpad and trim filter yet, anyway, it's not easy to
use it. If you think it's useful to remove all frozen frames, I prefer
to sumit another patch to fix it with frame cached.
Yes, the filter should remove all frozen frames. That it doesn't, is a
current limitation.
If the limitation can be removed internally, that is preferable to
external workarounds.
Gyan
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