[FFmpeg-trac] #4450(undetermined:new): Copying subtitle streams aborts w/non monotonically increasing dts
FFmpeg
trac at avcodec.org
Wed Aug 5 06:34:05 CEST 2015
#4450: Copying subtitle streams aborts w/non monotonically increasing dts
-------------------------------------+-------------------------------------
Reporter: forbyta | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: git-master | undetermined
Keywords: | Resolution:
av_interleaved_write_frame | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by forbyta):
I've uploaded an 8Mb sample vob file to the FTP server listed on the
ffmpeg Bug Report page (ftp://upload.ffmpeg.org/incoming). The filename
is non-monotonically.increasing.dts.vob and there is also a non-
monotonically.increasing.dts.txt file with a reference to this ticket.
In order to create the sample file I needed to use dd and skip to the
point in the video (about 1 hour in) where the problem occurs. Because of
this, the file doesn't contain any initial header information. Also, when
running the copy test (below) a lot of "buffer underflow" errors are
generated. The original file does NOT generate "buffer underflow" errors,
so I assume this is a result of the way the sample was generated (via dd).
Using the sample file and ffmpeg (N-74266-ge322b70) I get the following:
{{{
$ ffmpeg-dev -i non-monotonically.increasing.dts.vob -map 0 -codec copy -f
vob non-monotonically.increasing.dts-COPY.vob
...
[vob @ 0xa0642c0] Application provided invalid, non monotonically
increasing dts to muxer in stream 5: 8217903303 >= 797166
av_interleaved_write_frame(): Invalid argument
...
frame= 181 fps=0.0 q=-1.0 Lsize= 7116kB time=25:21:50.03 bitrate=
0.6kbits/s
video:5282kB audio:1699kB subtitle:12kB other streams:0kB global
headers:0kB muxing overhead: 1.747478%
Conversion failed!
}}}
I can provide the complete ffmpeg output if necessary.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4450#comment:3>
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