Opened 5 years ago

Closed 5 years ago

#1193 closed defect (fixed)

avi enc: msvideo1 unplayable by wmp

Reported by: ami_stuff Owned by:
Priority: normal Component: avcodec
Version: git-master Keywords: cram
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: yes

Description

http://ffmpeg.org/trac/ffmpeg/raw-attachment/ticket/1167/j.asf

the output from

C:\>ffmpeg -t 2 -i j.asf -an -vcodec msvideo1 out.avi
ffmpeg version N-39664-g6bfb304 Copyright (c) 2000-2012 the FFmpeg developers
  built on Apr 10 2012 02:37:16 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      51. 46.100 / 51. 46.100
  libavcodec     54. 14.101 / 54. 14.101
  libavformat    54.  3.100 / 54.  3.100
  libavdevice    53.  4.100 / 53.  4.100
  libavfilter     2. 67.101 /  2. 67.101
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 10.100 /  0. 10.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, asf, from 'j.asf':
  Duration: 00:00:41.36, start: 0.000000, bitrate: 100 kb/s
    Stream #0:0: Audio: wmav2 (a[1][0][0] / 0x0161), 16000 Hz, 1 channels, s16,
16 kb/s
    Stream #0:1: Video: msmpeg4 (MP43 / 0x3334504D), yuv420p, 192x144, 25 tbr, 1
k tbn, 1k tbc
Incompatible pixel format 'yuv420p' for codec 'msvideo1', auto-selecting format
'rgb555le'
[buffer @ 0x1dc5da0] w:192 h:144 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:f
lags=2
[buffersink @ 0x1dc5ca0] auto-inserting filter 'auto-inserted scale 0' between t
he filter 'src' and the filter 'out'
[scale @ 0x1dc64e0] w:192 h:144 fmt:yuv420p sar:0/1 -> w:192 h:144 fmt:rgb555le
sar:0/1 flags:0x4
Output #0, avi, to 'out.avi':
  Metadata:
    ISFT            : Lavf54.3.100
    Stream #0:0: Video: msvideo1 (MSVC / 0x4356534D), rgb555le, 192x144, q=2-31,
 200 kb/s, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:1 -> #0:0 (msmpeg4 -> msvideo1)
Press [q] to stop, [?] for help
frame=   17 fps=0.0 q=0.2 size=     120kB time=00:00:01.08 bitrate= 912.0kbits/s
frame=   31 fps=0.0 q=0.2 Lsize=     218kB time=00:00:02.00 bitrate= 893.9kbits/
s
video:212kB audio:0kB global headers:0kB muxing overhead 3.177549%

conversion is unplayable by wmp, this is because the output file have value "18" instead
of "10" before MSVC string (see attached screenshot - the right file is an output from ffmpeg)

Attachments (2)

msvideo1.jpg (15.9 KB) - added by ami_stuff 5 years ago.
patchcram.diff (428 bytes) - added by cehoyos 5 years ago.

Download all attachments as: .zip

Change History (6)

Changed 5 years ago by ami_stuff

Changed 5 years ago by cehoyos

comment:1 Changed 5 years ago by cehoyos

  • Analyzed by developer set
  • Component changed from undetermined to avcodec
  • Keywords cram added
  • Status changed from new to open
  • Version changed from unspecified to git-master

Thank you for the analysis, FFmpeg stores 24 bit per pixel instead of 16.

Could you try attached patch?

comment:2 Changed 5 years ago by ami_stuff

attached patch fixes the problem

comment:3 Changed 5 years ago by michael

patch LGTM

comment:4 Changed 5 years ago by cehoyos

  • Resolution set to fixed
  • Status changed from open to closed

Patch applied.

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