Opened 11 years ago
Closed 10 years ago
#3700 closed defect (fixed)
aic decoder output is not bit exact with and without mmx
| Reported by: | Timothy Gu | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | avcodec |
| Version: | git-master | Keywords: | aic |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | no |
Description
Summary of the bug
The aic decoder outputs different framecrc with and without MMX, even with -flags +bitexact.
How to reproduce
Decoding the first 15 frames of http://samples.ffmpeg.org/V-codecs/icod/Title-40_Percent_Speed.mov:
With MMX optimization:
timothy_gu@ubuntu-lenovo:~/ffmpeg$ ./ffmpeg -cpuflags mmx -threads 1 -i Title-40_Percent_Speed.mov -an -flags +bitexact -vframes 15 -f framecrc -
ffmpeg version N-63714-g1a426d5 Copyright (c) 2000-2014 the FFmpeg developers
built on Jun 4 2014 17:34:36 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration:
libavutil 52. 89.100 / 52. 89.100
libavcodec 55. 66.100 / 55. 66.100
libavformat 55. 42.100 / 55. 42.100
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Title-40_Percent_Speed.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2006-03-23 05:06:02
Duration: 00:00:07.57, start: 0.000000, bitrate: 77602 kb/s
Stream #0:0(eng): Video: aic (icod / 0x646F6369), yuv420p, 1440x1080, 76052 kb/s, SAR 4:3 DAR 16:9, 29.97 fps, 29.97 tbr, 2997 tbn, 2997 tbc (default)
Metadata:
creation_time : 2006-03-23 05:06:02
handler_name : Apple Alias Data Handler
encoder : Apple Intermediate Codec
timecode : 01:00:00;00
Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, 2 channels, s16, 1536 kb/s (default)
Metadata:
creation_time : 2006-03-23 05:06:03
handler_name : Apple Alias Data Handler
Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
Metadata:
creation_time : 2006-03-23 05:07:21
handler_name : Apple Alias Data Handler
timecode : 01:00:00;00
#tb 0: 100/2997
Output #0, framecrc, to 'pipe:':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
Stream #0:0(eng): Video: rawvideo (I420 / 0x30323449), yuv420p, 1440x1080 [SAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)
Metadata:
creation_time : 2006-03-23 05:06:02
handler_name : Apple Alias Data Handler
timecode : 01:00:00;00
encoder : Lavc rawvideo
Stream mapping:
Stream #0:0 -> #0:0 (aic -> rawvideo)
Press [q] to stop, [?] for help
0, 0, 0, 1, 2332800, 0xca4b6adc
0, 1, 1, 1, 2332800, 0x91ed4efa
0, 2, 2, 1, 2332800, 0x45b8140f
0, 3, 3, 1, 2332800, 0x464ff320
0, 4, 4, 1, 2332800, 0xeea6342e
0, 5, 5, 1, 2332800, 0xf098212b
0, 6, 6, 1, 2332800, 0xda92d4df
0, 7, 7, 1, 2332800, 0x214358c7
0, 8, 8, 1, 2332800, 0xac20040c
0, 9, 9, 1, 2332800, 0xd07a910f
0, 10, 10, 1, 2332800, 0x7293f51c
0, 11, 11, 1, 2332800, 0x4d5a87d0
0, 12, 12, 1, 2332800, 0xa6134a78
0, 13, 13, 1, 2332800, 0xee6c3078
0, 14, 14, 1, 2332800, 0x6c40c05c
Without:
timothy_gu@ubuntu-lenovo:~/ffmpeg$ ./ffmpeg -cpuflags 0 -threads 1 -i Title-40_Percent_Speed.mov -an -flags +bitexact -vframes 15 -f framecrc -
ffmpeg version N-63714-g1a426d5 Copyright (c) 2000-2014 the FFmpeg developers
built on Jun 4 2014 17:34:36 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration:
libavutil 52. 89.100 / 52. 89.100
libavcodec 55. 66.100 / 55. 66.100
libavformat 55. 42.100 / 55. 42.100
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100
Guessed Channel Layout for Input Stream #0.1 : stereo
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Title-40_Percent_Speed.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2006-03-23 05:06:02
Duration: 00:00:07.57, start: 0.000000, bitrate: 77602 kb/s
Stream #0:0(eng): Video: aic (icod / 0x646F6369), yuv420p, 1440x1080, 76052 kb/s, SAR 4:3 DAR 16:9, 29.97 fps, 29.97 tbr, 2997 tbn, 2997 tbc (default)
Metadata:
creation_time : 2006-03-23 05:06:02
handler_name : Apple Alias Data Handler
encoder : Apple Intermediate Codec
timecode : 01:00:00;00
Stream #0:1(eng): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, 2 channels, s16, 1536 kb/s (default)
Metadata:
creation_time : 2006-03-23 05:06:03
handler_name : Apple Alias Data Handler
Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
Metadata:
creation_time : 2006-03-23 05:07:21
handler_name : Apple Alias Data Handler
timecode : 01:00:00;00
#tb 0: 100/2997
Output #0, framecrc, to 'pipe:':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
Stream #0:0(eng): Video: rawvideo (I420 / 0x30323449), yuv420p, 1440x1080 [SAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)
Metadata:
creation_time : 2006-03-23 05:06:02
handler_name : Apple Alias Data Handler
timecode : 01:00:00;00
encoder : Lavc rawvideo
Stream mapping:
Stream #0:0 -> #0:0 (aic -> rawvideo)
Press [q] to stop, [?] for help
0, 0, 0, 1, 2332800, 0x48fbbbbd
0, 1, 1, 1, 2332800, 0xfebc8f5b
0, 2, 2, 1, 2332800, 0xdcb14ac9
0, 3, 3, 1, 2332800, 0xae3344d0
0, 4, 4, 1, 2332800, 0xeff2700a
0, 5, 5, 1, 2332800, 0x00177859
0, 6, 6, 1, 2332800, 0xebb81c54
0, 7, 7, 1, 2332800, 0x16dc9fd2
0, 8, 8, 1, 2332800, 0x7a995dec
0, 9, 9, 1, 2332800, 0x0396df1a
0, 10, 10, 1, 2332800, 0x0e4b6267
0, 11, 11, 1, 2332800, 0xe48be2c7
0, 12, 12, 1, 2332800, 0x75bf9fef
0, 13, 13, 1, 2332800, 0x408d9cf9
0, 14, 14, 1, 2332800, 0x7d3721d4
frame= 15 fps=0.0 q=0.0 Lsize= 1kB time=00:00:00.50 bitrate= 14.2kbits/s
video:34172kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Difference:
--- c-only 2014-06-04 17:42:53.650986856 -0700 +++ mmx 2014-06-04 17:42:47.722987012 -0700 @@ -1,16 +1,16 @@ #tb 0: 100/2997 -0, 0, 0, 1, 2332800, 0x48fbbbbd -0, 1, 1, 1, 2332800, 0xfebc8f5b -0, 2, 2, 1, 2332800, 0xdcb14ac9 -0, 3, 3, 1, 2332800, 0xae3344d0 -0, 4, 4, 1, 2332800, 0xeff2700a -0, 5, 5, 1, 2332800, 0x00177859 -0, 6, 6, 1, 2332800, 0xebb81c54 -0, 7, 7, 1, 2332800, 0x16dc9fd2 -0, 8, 8, 1, 2332800, 0x7a995dec -0, 9, 9, 1, 2332800, 0x0396df1a -0, 10, 10, 1, 2332800, 0x0e4b6267 -0, 11, 11, 1, 2332800, 0xe48be2c7 -0, 12, 12, 1, 2332800, 0x75bf9fef -0, 13, 13, 1, 2332800, 0x408d9cf9 -0, 14, 14, 1, 2332800, 0x7d3721d4 +0, 0, 0, 1, 2332800, 0xca4b6adc +0, 1, 1, 1, 2332800, 0x91ed4efa +0, 2, 2, 1, 2332800, 0x45b8140f +0, 3, 3, 1, 2332800, 0x464ff320 +0, 4, 4, 1, 2332800, 0xeea6342e +0, 5, 5, 1, 2332800, 0xf098212b +0, 6, 6, 1, 2332800, 0xda92d4df +0, 7, 7, 1, 2332800, 0x214358c7 +0, 8, 8, 1, 2332800, 0xac20040c +0, 9, 9, 1, 2332800, 0xd07a910f +0, 10, 10, 1, 2332800, 0x7293f51c +0, 11, 11, 1, 2332800, 0x4d5a87d0 +0, 12, 12, 1, 2332800, 0xa6134a78 +0, 13, 13, 1, 2332800, 0xee6c3078 +0, 14, 14, 1, 2332800, 0x6c40c05c
Change History (1)
comment:1 by , 10 years ago
| Reproduced by developer: | set |
|---|---|
| Resolution: | → fixed |
| Status: | new → closed |
Note:
See TracTickets
for help on using tickets.
fixed in 0a2004b6d11ff962361420c3150fe760cf1f7115