[FFmpeg-trac] #1174(undetermined:new): iPod / iPad plays both audio tracks simultaneously
FFmpeg
trac at avcodec.org
Fri Apr 6 23:10:42 CEST 2012
#1174: iPod / iPad plays both audio tracks simultaneously
--------------------------------------+----------------------------------
Reporter: TonyPh12345 | Type: defect
Status: new | Priority: normal
Component: undetermined | Version: 0.10.2
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
--------------------------------------+----------------------------------
This is very similar to portions of what's described in #468.
The input MKV file has one AVC video track and two AC3 audio tracks.
I use this command (in ffmpeg 0.10.2; see below for results with today's
git)
ffmpeg -y -i input.mkv -map 0:0 -map 0:1 -map 0:2 -acodec aac -ar 48000
-ab 128k -ac 2 -vcodec copy -strict experimental -threads 6 output.m4v
The process runs, and no errors are reported
{{{
ffmpeg started on 2012-04-06 at 15:59:59
Report written to "ffmpeg-20120406-155959.log"
Command line:
ffmpeg -report -y -i input.mkv -map 0:0 -map 0:1 -map 0:2 -acodec aac -ar
48000 -ab 128k -ac 2 -vcodec copy -strict experimental -threads 6
output.m4v
ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
built on Mar 24 2012 15:22:08 with gcc 4.5.1 20100924 (Red Hat 4.5.1-4)
configuration:
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
[matroska,webm @ 0xa058280] Format matroska,webm probed with size=2048 and
score=100
st:0 removing common factor 1000000 from timebase
st:1 removing common factor 1000000 from timebase
st:2 removing common factor 1000000 from timebase
st:3 removing common factor 1000000 from timebase
st:4 removing common factor 1000000 from timebase
st:5 removing common factor 1000000 from timebase
[h264 @ 0xa05f4c0] err{or,}_recognition separate: 1; 1
[h264 @ 0xa05f4c0] err{or,}_recognition combined: 1; 10001
[ac3 @ 0xa05fb60] err{or,}_recognition separate: 1; 1
[ac3 @ 0xa05fb60] err{or,}_recognition combined: 1; 10001
[ac3 @ 0xa05fb60] Unsupported bit depth: 0
[ac3 @ 0xa060140] err{or,}_recognition separate: 1; 1
[ac3 @ 0xa060140] err{or,}_recognition combined: 1; 10001
[ac3 @ 0xa060140] Unsupported bit depth: 0
[dvdsub @ 0xa079a00] err{or,}_recognition separate: 1; 1
[dvdsub @ 0xa079a00] err{or,}_recognition combined: 1; 10001
[dvdsub @ 0xa079a00] palette: 0x0000fd 0xfe0000 0x000000 0xfdfdfd 0xf38200
0x0087f4 0xf6ea8a 0x007c7b 0x0000fd 0xfeea04 0x7b0000 0x007e00 0x00007a
0xdc00fd 0xdd7d00 0xdfe13a
[dvdsub @ 0xa07fc80] err{or,}_recognition separate: 1; 1
[dvdsub @ 0xa07fc80] err{or,}_recognition combined: 1; 10001
[dvdsub @ 0xa07fc80] palette: 0x0000fd 0xfe0000 0x000000 0xfdfdfd 0xf38200
0x0087f4 0xf6ea8a 0x007c7b 0x0000fd 0xfeea04 0x7b0000 0x007e00 0x00007a
0xdc00fd 0xdd7d00 0xdfe13a
[h264 @ 0xa05f4c0] no picture
[h264 @ 0xa05f4c0] no picture
[matroska,webm @ 0xa058280] All info found
rfps: 29.666667 0.013781
rfps: 29.666667 0.013781
rfps: 29.750000 0.007295
rfps: 29.750000 0.007295
rfps: 29.833333 0.002869
rfps: 29.833333 0.002869
rfps: 29.916667 0.000504
rfps: 29.916667 0.000504
rfps: 30.000000 0.000199
rfps: 30.083333 0.001955
rfps: 30.166667 0.005771
rfps: 30.250000 0.011647
rfps: 30.333333 0.019584
rfps: 30.333333 0.019584
rfps: 59.583333 0.019298
rfps: 59.666667 0.011477
rfps: 59.666667 0.011477
rfps: 59.750000 0.005717
rfps: 59.750000 0.005717
rfps: 59.833333 0.002017
rfps: 59.833333 0.002017
rfps: 59.916667 0.000377
rfps: 59.916667 0.000377
rfps: 29.970030 0.000072
rfps: 29.970030 0.000072
rfps: 59.940060 0.000287
rfps: 59.940060 0.000287
Input #0, matroska,webm, from 'input.mkv':
Duration: 00:22:01.32, start: 0.000000, bitrate: 1705 kb/s
Chapter #0.0: start 0.000000, end 330.330000
Metadata:
title : Chapter 1
Chapter #0.1: start 330.330000, end 859.325133
Metadata:
title : Chapter 2
Chapter #0.2: start 859.325133, end 1295.360733
Metadata:
title : Chapter 3
Chapter #0.3: start 1295.360733, end 1321.320000
Metadata:
title : Chapter 4
Stream #0:0(eng), 43, 1/1000: Video: h264 (Main), yuv420p, 720x480
[SAR 8:9 DAR 4:3], 29.97 fps, 29.97 tbr, 1k tbn, 180k tbc (default)
Stream #0:1(eng), 46, 1/1000: Audio: ac3, 48000 Hz, 5.1(side), s16,
384 kb/s (default)
Stream #0:2(eng), 46, 1/1000: Audio: ac3, 48000 Hz, mono, s16, 96 kb/s
Stream #0:3(eng), 0, 1/1000: Subtitle: dvd_subtitle
Stream #0:4(eng), 0, 1/1000: Subtitle: dvd_subtitle
Stream #0:5(eng), 0, 1/1000: Subtitle: text
Incompatible sample format 's16' for codec 'aac', auto-selecting format
'flt'
Incompatible sample format 's16' for codec 'aac', auto-selecting format
'flt'
[aac @ 0xa0e4c80] err{or,}_recognition separate: 1; 1
[aac @ 0xa0e4c80] err{or,}_recognition combined: 1; 10001
[aac @ 0xa0e4c80] Unsupported bit depth: 0
[aac @ 0xa0a5340] err{or,}_recognition separate: 1; 1
[aac @ 0xa0a5340] err{or,}_recognition combined: 1; 10001
[aac @ 0xa0a5340] Unsupported bit depth: 0
[ac3 @ 0xa05fb60] err{or,}_recognition separate: 1; 10001
[ac3 @ 0xa05fb60] err{or,}_recognition combined: 1; 10001
[ac3 @ 0xa05fb60] Unsupported bit depth: 0
[ac3 @ 0xa060140] err{or,}_recognition separate: 1; 10001
[ac3 @ 0xa060140] err{or,}_recognition combined: 1; 10001
[ac3 @ 0xa060140] Unsupported bit depth: 0
Output #0, ipod, to 'output.m4v':
Metadata:
encoder : Lavf53.32.100
Chapter #0.0: start 0.000000, end 330.330000
Metadata:
title : Chapter 1
Chapter #0.1: start 330.330000, end 859.325133
Metadata:
title : Chapter 2
Chapter #0.2: start 859.325133, end 1295.360733
Metadata:
title : Chapter 3
Chapter #0.3: start 1295.360733, end 1321.320000
Metadata:
title : Chapter 4
Stream #0:0(eng), 0, 1/1000: Video: h264 (avc1 / 0x31637661), yuv420p,
720x480 [SAR 8:9 DAR 4:3], q=2-31, 29.97 fps, 1k tbn, 1k tbc (default)
Stream #0:1(eng), 0, 1/48000: Audio: aac (mp4a / 0x6134706D), 48000
Hz, 2 channels, flt, 128 kb/s (default)
Stream #0:2(eng), 0, 1/48000: Audio: aac (mp4a / 0x6134706D), 48000
Hz, 2 channels, flt, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (ac3 -> aac)
Stream #0:2 -> #0:2 (ac3 -> aac)
Press [q] to stop, [?] for help
Input stream #0:1 frame changed from rate:48000 fmt:s16 ch:6 to rate:48000
fmt:s16 ch:2
0.707107
0.707107
frame=39600 fps=242 q=-1.0 Lsize= 236894kB time=00:22:01.22
bitrate=1468.8kbits/s
video:193780kB audio:41301kB global headers:0kB muxing overhead 0.770842%
}}}
But when I watch these files on iPod Touch or iPad (both running iOS 5.1)
BOTH audio tracks play simultaneously.
If I access the Audio Track chooser in the video player, NEITHER track is
"Checkmarked." If I then select either track, playback is normal.
It just seems like there's no "Default" flag set or something.
I don't understand the M4V format enough to debug in detail.
The same MKV converted to M4V using HandBrake 0.9.5 and the iPad preset
works correctly.
I have tried this with multiple files using ffmpeg 0.10.2.
I cannot try with today's GIT (4/6/12) because using the exact same
command, I get the error
{{{
Application provided invalid, non monotonically increasing dts to muxer in
stream 0: -67 >= -67
av_interleaved_write_frame(): Invalid argument
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1174>
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