Under Ubuntu 13.10 I have this version:
$ avconv -version
avconv version 9.13-6:9.13-0ubuntu0.14.04.1, Copyright (c) 2000-2014 the
Libav developers
built on May 9 2014 13:34:03 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
avconv 9.13-6:9.13-0ubuntu0.14.04.1
libavutil 52. 3. 0 / 52. 3. 0
libavcodec 54. 35. 0 / 54. 35. 0
libavformat 54. 20. 4 / 54. 20. 4
libavdevice 53. 2. 0 / 53. 2. 0
libavfilter 3. 3. 0 / 3. 3. 0
libavresample 1. 0. 1 / 1. 0. 1
libswscale 2. 1. 1 / 2. 1. 1
This copies all video and all 8 audio channels fine:
$ avconv -y -i convertingSbtToEclipse.mov -c:v copy -c:a copy
convertingSbtToEclipseMono.mov
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'convertingSbtToEclipse.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2014-07-13 20:26:58
Duration: 00:07:33.48, start: 0.000000, bitrate: 3353 kb/s
Stream #0.0(und): Video: h264 (Main), yuv420p, 1920x1080, 3106
kb/s, PAR 1:1 DAR 16:9, 34.04 fps, 6k tbn, 50 tbc
Metadata:
creation_time : 2014-07-13 20:26:58
Stream #0.1(und): Audio: aac, 44100 Hz, 7.1(wide), fltp, 240 kb/s
Metadata:
creation_time : 2014-07-13 20:26:58
Output #0, mov, to 'convertingSbtToEclipseMono.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2014-07-13 20:26:58
encoder : Lavf54.20.4
Stream #0.0(und): Video: libx264, yuv420p, 1920x1080 [PAR 1:1 DAR
16:9], q=2-31, 3106 kb/s, 6k tbn, 6k tbc
Metadata:
creation_time : 2014-07-13 20:26:58
Stream #0.1(und): Audio: aac, 44100 Hz, 7.1(wide), 240 kb/s
Metadata:
creation_time : 2014-07-13 20:26:58
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press ctrl-c to stop encoding
frame=15437 fps=1671 q=-1.0 Lsize= 185767kB time=453.20
bitrate=3357.9kbits/s
video:171952kB audio:13327kB global headers:0kB muxing overhead 0.262933%
But I only want the first audio channel. The following still gives me
all 8 audio channels:
$ avconv -y -i convertingSbtToEclipse.mov -c:v copy -c:a copy -map 0:1
convertingSbtToEclipseMono.mov
What is the magic incantation?
Thanks, Mike
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