[FFmpeg-trac] #46(undetermined:new): mpeg2video in ea is played at double speed (Issue 2290)

[FFmpeg]

#46: mpeg2video in ea is played at double speed (Issue 2290)
--------------------------+---------------------
 Reporter:  DJX           |        Type:  defect
   Status:  new           |    Priority:  normal
Component:  undetermined  |     Version:  git
 Keywords:                |  Blocked By:
 Blocking:                |  Reproduced:  0
 Analyzed:  0             |
--------------------------+---------------------
 Just importing this issue from the old roundup because I'm still waiting
 for a fix. Cehoyos confirmed this.

 ffmpeg -acodec adpcm_ea_r1 -i c:\temp\demo.mpc -vcodec mpeg2video -sameq
 -acodec
 mp2 -ab 384K c:\temp\out.mpg
 FFmpeg version git-N-28915-g454fab7, Copyright (c) 2000-2011 the FFmpeg
 develope
 rs
   built on Apr  7 2011 02:22:47 with gcc 4.5.0 20100414 (Fedora MinGW
 4.5.0-1.fc
 14)
   configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build
 --arch=
 x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686
 -pc-min
 gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime-
 cpudetect
 --enable-cross-compile --enable-static --disable-shared --extra-
 libs='-lws2_32 -
 lwinmm' --extra-cflags='--static
 -I/var/www/users/research/ffmpeg/snapshots/buil
 d/include' --extra-ldflags='-static
 -L/var/www/users/research/ffmpeg/snapshots/b
 uild/lib' --enable-bzlib --enable-zlib --enable-gpl --enable-version3
 --enable-n
 onfree --enable-libx264 --enable-libspeex --enable-libtheora --enable-
 libvorbis
 --enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable-
 libopencor
 e-amrwb --enable-libmp3lame --enable-libvpx --disable-decoder=libvpx
   libavutil    50. 40. 1 / 50. 40. 1
   libavcodec   52.117. 0 / 52.117. 0
   libavformat  52.106. 0 / 52.106. 0
   libavdevice  52.  4. 0 / 52.  4. 0
   libavfilter   1. 77. 1 /  1. 77. 1
   libswscale    0. 13. 0 /  0. 13. 0
 [ea @ 0x14cf270] max_analyze_duration reached
 [ea @ 0x14cf270] Estimating duration from bitrate, this may be inaccurate

 Seems stream 0 codec frame rate differs from container frame rate: 59.94
 (60000/
 1001) -> 29.97 (60000/2002)
 Input #0, ea, from 'c:\temp\demo.mpc':
   Duration: 00:01:01.85, start: 0.000000, bitrate: 4235 kb/s
     Stream #0.0: Video: mpeg2video (Main), yuv420p, 640x448 [PAR 1:1 DAR
 10:7],
 3851 kb/s, 29.97 tbr, 90k tbn, 59.94 tbc
     Stream #0.1: Audio: adpcm_ea_r1, 48000 Hz, 2 channels, s16, 384 kb/s
 [buffer @ 0x37de40] w:640 h:448 pixfmt:yuv420p
 [mp2 @ 0x37d9f0] The requested thread algorithm is not supported with this
 threa
 d library.
 [mpeg @ 0x3cd6ab0] VBV buffer size not set, muxing may fail
 Output #0, mpeg, to 'c:\temp\out.mpg':
   Metadata:
     encoder         : Lavf52.106.0
     Stream #0.0: Video: mpeg2video, yuv420p, 640x448 [PAR 1:1 DAR 10:7],
 q=2-31,
  200 kb/s, 90k tbn, 29.97 tbc
     Stream #0.1: Audio: mp2, 48000 Hz, 2 channels, s16, 384 kb/s
 Stream mapping:
   Stream #0.0 -> #0.0
   Stream #0.1 -> #0.1
 Press [q] to stop encoding
 frame=  112 fps=  0 q=0.0 size=    1004kB time=3.70 bitrate=2220.7kbits/s
 dup=0
 frame=  192 fps=186 q=0.0 size=    1884kB time=6.37 bitrate=2421.7kbits/s
 dup=0
 frame=  271 fps=175 q=0.0 size=    2660kB time=9.01 bitrate=2418.8kbits/s
 dup=0
 frame=  332 fps=161 q=0.0 size=    4016kB time=11.04 bitrate=2978.8kbits/s
 dup=0
 frame=  385 fps=150 q=0.0 size=    5488kB time=12.81 bitrate=3508.8kbits/s
 dup=0
 frame=  439 fps=142 q=0.0 size=    7100kB time=14.61 bitrate=3979.8kbits/s
 dup=0
 frame=  492 fps=137 q=0.0 size=    8378kB time=16.38 bitrate=4189.2kbits/s
 dup=0
 frame=  545 fps=132 q=0.0 size=    9822kB time=18.15 bitrate=4432.8kbits/s
 dup=0
 frame=  597 fps=129 q=0.0 size=   11288kB time=19.89 bitrate=4649.9kbits/s
 dup=0
 frame=  648 fps=126 q=0.0 size=   12990kB time=21.59 bitrate=4929.3kbits/s
 dup=0
 frame=  711 fps=126 q=0.0 size=   14176kB time=23.69 bitrate=4902.0kbits/s
 dup=0
 frame=  769 fps=124 q=0.0 size=   15670kB time=25.63 bitrate=5009.4kbits/s
 dup=0
 frame=  822 fps=123 q=0.0 size=   17122kB time=27.39 bitrate=5120.2kbits/s
 dup=0
 frame=  875 fps=121 q=0.0 size=   18370kB time=29.16 bitrate=5160.3kbits/s
 dup=0
 frame=  949 fps=123 q=0.0 size=   20352kB time=31.63 bitrate=5270.8kbits/s
 dup=0
 frame= 1023 fps=116 q=0.0 Lsize=   22286kB time=34.10
 bitrate=5353.8kbits/s dup=
 0 drop=1020
 video:18968kB audio:3196kB global headers:0kB muxing overhead 0.548581%

 Audio codec is incorrectly identified as adpcm_ea_r2 (should be
 adpcm_ea_r1).

 From Cehoyos:
 Original sample should play ~68 seconds (not 34 seconds as provided output
 shows), sound is played correctly (if codec is forced, see issue 2291),
 video
 plays at double speed, every second frame is dropped by ffmpeg to keep the
 (correct) frame-rate of ~30.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/46>
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