[FFmpeg-trac] #5125(undetermined:new): mpg frames flick

FFmpeg trac at avcodec.org
Thu Jan 7 01:09:56 CET 2016


#5125: mpg frames flick
-------------------------------------+-------------------------------------
             Reporter:  rhbc73       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Generated a mpg file from a single png image. Command line below

 {{{
 $ ffmpeg.exe -loop 1 -i 001.png -t 30 -target pal-dvd a30.mpg
 ffmpeg version N-77715-gfc703f5 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.2.0 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
 --enable-gnutls --enable-iconv --enable-libass --enable-libbluray
 --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype
 --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug
 --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb
 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-
 libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora
 --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-
 libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs
 --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink
 --enable-zlib
   libavutil      55. 12.100 / 55. 12.100
   libavcodec     57. 21.100 / 57. 21.100
   libavformat    57. 21.101 / 57. 21.101
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 23.100 /  6. 23.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
   libpostproc    54.  0.100 / 54.  0.100
 Input #0, png_pipe, from '001.png':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: png, rgba(pc), 720x576 [SAR 3779:3779 DAR 5:4], 25
 fps, 25 tbr, 25 tbn, 25 tbc
 Output #0, dvd, to 'a30.mpg':
   Metadata:
     encoder         : Lavf57.21.101
     Stream #0:0: Video: mpeg2video (Main), yuv420p, 720x576 [SAR 1:1 DAR
 5:4], q=2-31, 6000 kb/s, 25 fps, 90k tbn, 25 tbc
     Metadata:
       encoder         : Lavc57.21.100 mpeg2video
     Side data:
       unknown side data type 10 (24 bytes)
 Stream mapping:
   Stream #0:0 -> #0:0 (png (native) -> mpeg2video (native))
 Press [q] to stop, [?] for help
 frame=  750 fps=196 q=2.0 Lsize=   10748kB time=00:00:29.96
 bitrate=2938.8kbits/s speed=7.82x
 video:10489kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 2.465228%
 }}}

 Play the generated mpg in ffplay or MPC-HOME, you can notice flick every
 0.5 second.

 The mp4 file generated by the same image doesn't have this problem.
 Command line is

 {{{
 ffmpeg.exe -loop 1 -i 001.png -t 30 mp4_30.mp4
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5125>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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