#1051: ffmpeg with -f lavfi and movie leads to error messages and videos with 1
fps
------------------------------------+------------------------------------
Reporter: ls | Owner:
Type: defect | Status: new
Priority: normal | Component: avdevice
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by ls):
There seems to be a problem with framerate estimation and lavfi.
Working:
{{{
$ ffplay -f lavfi movie=camera-raw.mp4,scale=-1:968
[...]
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1721x968 [SAR
15488:15489 DAR 16:9], 25 tbr, 25k tbn, 25k tbc
}}}
Only 1 fps:
{{{
$ ffplay -f lavfi movie=camera-raw.mp4,scale=-1:969
[...]
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1723x969 [SAR
5168:5169 DAR 16:9], 1 tbr, 25k tbn, 25k tbc
}}}
A small change in frame height changes the framerate estimated to 1 fps.
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1051#comment:1>
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