QT WRAW file decodes incorrectly

[ami_stuff]

attached QT WRAW file does not decode correctly

QT Player says it is: WRAW, 44x41, millions of colors, 15 fps

C:\>ffmpeg -i C:\CarltonMovie2.mov
FFmpeg version git-N-29181-ga304071, Copyright (c) 2000-2011 the FFmpeg develope
rs
  built on Apr 18 2011 21:24:03 with gcc 4.5.2
  configuration: --enable-gpl --enable-version3 --enable-runtime-cpudetect --ena
ble-memalign-hack --enable-avisynth --enable-bzlib --enable-frei0r --enable-libo
pencore-amrnb --enable-libopencore-amrwb --enable-libfreetype --enable-libgsm --
enable-libmp3lame --enable-libopenjpeg --enable-librtmp --enable-libschroedinger
 --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enabl
e-libx264 --enable-libxavs --enable-libxvid --enable-zlib --cross-prefix=i686-w6
4-mingw32- --target-os=mingw32 --arch=x86_32 --extra-cflags=-I/home/kyle/softwar
e/ffmpeg/external-libraries/win32/include --extra-ldflags=-L/home/kyle/software/
ffmpeg/external-libraries/win32/lib --pkg-config=pkg-config
  libavutil    50. 40. 1 / 50. 40. 1
  libavcodec   52.120. 0 / 52.120. 0
  libavformat  52.108. 0 / 52.108. 0
  libavdevice  52.  4. 0 / 52.  4. 0
  libavfilter   1. 79. 0 /  1. 79. 0
  libswscale    0. 13. 0 /  0. 13. 0

Seems stream 0 codec frame rate differs from container frame rate: 600.00 (600/1
) -> 15.00 (15/1)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\CarltonMovie2.mov':
  Metadata:
    creation_time   : 2004-11-23 10:27:38
  Duration: 00:00:03.26, start: 0.000000, bitrate: 656 kb/s
    Stream #0.0(eng): Video: rawvideo, pal8, 44x41, 649 kb/s, 15 fps, 15 tbr, 60
0 tbn, 600 tbc
    Metadata:
      creation_time   : 2004-11-23 10:27:38
At least one output file must be specified

[llogan]

Confirming behavior. Video looks like static for me (assuming of course that's not what the video is supposed to look like):

$ ffplay CarltonMovie2.mov 
ffplay version git-N-29342-ge4253b1, Copyright (c) 2003-2011 the FFmpeg developers
  built on Apr 24 2011 11:05:34 with gcc 4.6.0 20110415 (prerelease)
  configuration: --prefix=/usr --disable-optimizations
  libavutil    51.  0. 0 / 51.  0. 0
  libavcodec   53.  1. 0 / 53.  1. 0
  libavformat  53.  0. 3 / 53.  0. 3
  libavdevice  53.  0. 0 / 53.  0. 0
  libavfilter   2.  0. 0 /  2.  0. 0
  libswscale    0. 13. 0 /  0. 13. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'CarltonMovie2.mov':
  Metadata:
    creation_time   : 2004-11-23 10:27:38
  Duration: 00:00:03.26, start: 0.000000, bitrate: 656 kb/s
    Stream #0.0(eng): Video: rawvideo, pal8, 44x41, 649 kb/s, 15 fps, 15 tbr, 600 tbn, 600 tbc
    Metadata:
      creation_time   : 2004-11-23 10:27:38
[ffsink @ 0x17a3a40] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
[scale @ 0x17a4b50] w:44 h:41 fmt:pal8 -> w:44 h:41 fmt:yuv420p flags:0x4
   9.20 A-V:  0.000 s:0.0 aq=    0KB vq=    0KB sq=    0B f=0/0   0/0

[Carl Eugen Hoyos]

This is reproducible compared with current QuickTime player.

[llogan]

Replying to cehoyos:

This is reproducible compared with current QuickTime player.

No. QuickTime 7.6.9 (1680.9) on Windows 7 produces a different looking output for me.

[ami_stuff]

one more QT WRAW sample:

​http://www.datafilehost.com/download-0d7e85a5.html

[ami_stuff]

seems like 8bpp WRAW files in mov needs to be flipped as well

​http://origin.www.nature.com/ni/journal/v6/n12/extref/ni1272-S13.mov
​http://www.solstice.de/grundl_d_tph/exp_besch/zyklotron.mov

more samples here (search for WRAW string):

​http://home.roadrunner.com/~compn/uncommon_video_codecs_final.txt

[ami_stuff]

WRAW 8bpp in avi seems to need a flip as well, so my patch posted to libav-devel seems to be correct

​http://www.aoc.nrao.edu/events/synthesis/2008/lectures/test-mars.avi

[ami_stuff]

*posted to ffmpeg-devel :)

[Stefano Sabatini]

Fixed in commit:

commit 040e1c67edab57177adb88a7dd1cc9ed38d2b74e
Author: ami_stuff <​ami_stuff@o2.pl>
Date: Tue May 24 23:38:01 2011 +0200

rawdec: fix decoding of QT WRAW files

Fix decoding of QT WRAW files.

From some tests it results that:

1. all of the AVI/MOV WRAW files (at least from the link posted to the trac ticket #108) need to be flipped
2. mov WRAW files need to use AVI color modes
3. assigning PAL8 mode by default to WRAW codec is not correct

Fix decoding of file CarltonMovie2.mov, fix trac issue #108.

I tried with all samples, note that ~/samples/nature06421-s4.mov crashes ffplay, this looks like a swscale bug (you can reproduce it with -vf scale=368:233,format=bgra).

Thanks again for the accurate report and the patch :)!

[ami_stuff]

@saste

something like this seems to fix "nature06421-s4.mov" here (I test on big-endian)

diff --git a/libavcodec/rawdec.c b/libavcodec/rawdec.c
index 9702f98..75b1e6e 100644
--- a/libavcodec/rawdec.c
+++ b/libavcodec/rawdec.c
@@ -90,8 +90,12 @@ static av_cold int raw_init_decoder(AVCodecContext *avctx)
 
     if (avctx->codec_tag == MKTAG('r','a','w',' '))
         avctx->pix_fmt = ff_find_pix_fmt(pix_fmt_bps_mov, avctx->bits_per_coded_sample);
-    else if (avctx->codec_tag == MKTAG('W','R','A','W'))
+    else if (avctx->codec_tag == MKTAG('W','R','A','W')){
+       if (avctx->bits_per_coded_sample == 32)
+        avctx->pix_fmt = PIX_FMT_BGRA;
+       else
         avctx->pix_fmt = ff_find_pix_fmt(pix_fmt_bps_avi, avctx->bits_per_coded_sample);
+       }
     else if (avctx->codec_tag)
         avctx->pix_fmt = ff_find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag);
     else if (avctx->pix_fmt == PIX_FMT_NONE && avctx->bits_per_coded_sample)

[Carl Eugen Hoyos]

Should be fixed.