[FFmpeg-trac] #4765(avformat:new): concat and image (pipe) demuxer regression
FFmpeg
trac at avcodec.org
Sat Aug 8 12:44:11 CEST 2015
#4765: concat and image (pipe) demuxer regression
-------------------------------------+-------------------------------------
Reporter: cehoyos | Owner:
Type: defect | Status: new
Priority: important | Component: avformat
Version: git- | Keywords: image2
master | concat regression
Blocked By: | Blocking:
Reproduced by developer: 0 | Analyzed by developer: 0
-------------------------------------+-------------------------------------
http://thread.gmane.org/gmane.comp.video.ffmpeg.user/54496
{{{
$ ffmpeg -i fate-suite/lena.pnm out1.png
$ ffmpeg -i fate-suite/lena.pnm -vf rotate=3.1415/2 out2.png
$ ffmpeg -i fate-suite/lena.pnm -vf rotate=3.1415 out3.png
$ ffmpeg -i fate-suite/lena.pnm -vf rotate=3.1415*3/2 out4.png
}}}
{{{
$ cat concat.txt
file out1.png
duration 2
file out2.png
duration 4
file out3.png
duration 8
file out4.png
duration 16
}}}
The following command worked fine until
b3fd2b175c90b4766034095e74e1f5112b1547ef (related to ticket #3901),
current git head produces four output frames but with completely wrong
duration.
{{{
$ ffmpeg -f concat -i concat.txt out.avi
ffmpeg version N-74327-g7e9cd99 Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl
libavutil 54. 30.100 / 54. 30.100
libavcodec 56. 57.100 / 56. 57.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 32.100 / 5. 32.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, concat, from 'concat.txt':
Duration: 00:00:30.00, start: 775903366.480000, bitrate: 0 kb/s
Stream #0:0: Video: png, rgb24(pc), 256x256, 25 tbr, 25 tbn, 25 tbc
Output #0, avi, to 'out.avi':
Metadata:
ISFT : Lavf56.40.101
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 256x256,
q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
Metadata:
encoder : Lavc56.57.100 mpeg4
Stream mapping:
Stream #0:0 -> #0:0 (png (native) -> mpeg4 (native))
Press [q] to stop, [?] for help
[concat @ 0x369a1c0] DTS -230575710986727 < -9214782102262 out of order
DTS -221360928884465, next:40000 st:0 invalid dropping
PTS -221360928884465, next:40000 invalid dropping st:0
DTS -221360928884365, next:80000 st:0 invalid dropping
PTS -221360928884365, next:80000 invalid dropping st:0
DTS -221360928884165, next:120000 st:0 invalid dropping
PTS -221360928884165, next:120000 invalid dropping st:0
frame= 4 fps=0.0 q=2.4 Lsize= 81kB time=00:00:00.16
bitrate=4145.1kbits/s
video:75kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 7.498801%
}}}
Originally, {{{--disable-demuxer=image_*_pipe}}} could be used as work-
around (and the issue was that only one output frame was produced), this
is not possible since 7ff0137a1f3bd6b12ca0c55303085ef3128ded98
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4765>
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