[FFmpeg-trac] #5876(avfilter:new): vf_fps outputs extraneous frame
FFmpeg
trac at avcodec.org
Wed Oct 5 17:21:38 EEST 2016
#5876: vf_fps outputs extraneous frame
----------------------------------+--------------------------------------
Reporter: Illya | Type: defect
Status: new | Priority: normal
Component: avfilter | Version: git-master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Summary of the bug:
60fps.mp4 has 900 frames
out.avi has 451 frames, it should have 450
How to reproduce:
{{{
$ ~/Workspace/Multimedia/ffmpeg/ffmpeg/ffmpeg -i 60fps.mp4 -vf fps=30
out.avi
ffmpeg version N-81883-gbeb877b Copyright (c) 2000-2016 the FFmpeg
developers
built with Apple LLVM version 8.0.0 (clang-800.0.38)
configuration: --samples=fate
libavutil 55. 32.100 / 55. 32.100
libavcodec 57. 60.101 / 57. 60.101
libavformat 57. 51.102 / 57. 51.102
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 63.100 / 6. 63.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 2.100 / 2. 2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '60fps.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41isomavc1
creation_time : 2016-10-03T21:26:33.000000Z
Duration: 00:00:15.04, start: 0.000000, bitrate: 4115 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv,
bt709), 1280x720 [SAR 1:1 DAR 16:9], 3861 kb/s, 60 fps, 60 tbr, 60 tbn,
120 tbc (default)
Metadata:
creation_time : 2016-10-03T21:26:33.000000Z
handler_name : L-SMASH Video Handler
encoder : AVC Coding
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 256 kb/s (default)
Metadata:
creation_time : 2016-10-03T21:26:33.000000Z
handler_name : L-SMASH Audio Handler
File 'out.avi' already exists. Overwrite ? [y/N] y
Output #0, avi, to 'out.avi':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41isomavc1
ISFT : Lavf57.51.102
Stream #0:0(und): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x720
[SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 30 fps, 30 tbn, 30 tbc (default)
Metadata:
creation_time : 2016-10-03T21:26:33.000000Z
handler_name : L-SMASH Video Handler
encoder : Lavc57.60.101 mpeg4
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo,
fltp, 192 kb/s (default)
Metadata:
creation_time : 2016-10-03T21:26:33.000000Z
handler_name : L-SMASH Audio Handler
encoder : Lavc57.60.101 ac3
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> mpeg4 (native))
Stream #0:1 -> #0:1 (aac (native) -> ac3 (native))
Press [q] to stop, [?] for help
frame= 451 fps=149 q=31.0 Lsize= 4749kB time=00:00:15.04
bitrate=2586.7kbits/s speed=4.98x
video:4365kB audio:352kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.669291%
}}}
Patches should be submitted to the ffmpeg-devel mailing list and not this
bug tracker.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/5876>
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