#11037: setpts filter breaks input framerate detection
-------------------------------------+-------------------------------------
Reporter: | Type: defect
enchiladasqualid |
Status: new | Priority: normal
Component: | Version: 7.0
undetermined |
Keywords: framerate | Blocked By:
fps regression |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
**Summary of the bug:**
When setpts filter is used input framerate is not detected. Other filters
(tested handful) do not cause this. Different encoders (tested libx264,
libx265) do not impact this.
Issue present in 7.0, 7.0.1, and master but not in 6.1.1.
The following message is produced {{{No information about the input
framerate is available. Falling back to a default value of 25fps. Use the
-r option if you want a different framerate.}}}
Log Excerpt
[graph 0 input from stream 0:0 @ 0000029e304b9f40] TB:0.000011
FRAME_RATE:60.000000 SAMPLE_RATE:nan
[graph 0 input from stream 0:0 @ 0000029e304b9f40] video frame properties
congruent with link at pts_time: 0
[vost#0:0/libx264 @ 0000029e304bb600] No information about the input
framerate is available. Falling back to a default value of 25fps. Use the
-r option if you want a different framerate.
**How to reproduce:**
{{{
% ffmpeg -i "Big Buck Bunny - FULL HD 60FPS.mp4" -vf "setpts=PTS-STARTPTS"
-c:v libx264 output.mp4
ffmpeg version 7.0.1-full_build-www.gyan.dev Copyright (c) 2000-2024 the
FFmpeg developers
}}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/11037>
FFmpeg <https://ffmpeg.org>
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