Eu tentei o seguinte:
$ avconv -i in.mov -codec:video copy -codec:audio copy -filter transpose=clock out.mov
avconv version 0.8.6-6:0.8.6-1ubuntu2, Copyright (c) 2000-2013 the Libav developers
built on Mar 30 2013 22:23:21 with gcc 4.7.2
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.mov':
Metadata:
major_brand : qt
minor_version : 537331968
compatible_brands: qt CAEP
creation_time : 2013-03-03 15:47:47
Duration: 00:00:18.97, start: 0.000000, bitrate: 45882 kb/s
Stream #0.0(eng): Video: h264 (Constrained Baseline), yuvj420p, 1920x1080, 44343 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 48k tbc
Metadata:
creation_time : 2013-03-03 15:47:47
Stream #0.1(eng): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Metadata:
creation_time : 2013-03-03 15:47:47
Output #0, mov, to 'out.mov':
Metadata:
major_brand : qt
minor_version : 537331968
compatible_brands: qt CAEP
creation_time : 2013-03-03 15:47:47
encoder : Lavf53.21.1
Stream #0.0(eng): Video: avc1 / 0x31637661, yuvj420p, 1920x1080, q=2-31, 44343 kb/s, 24k tbn, 24k tbc
Metadata:
creation_time : 2013-03-03 15:47:47
Stream #0.1(eng): Audio: pcm_s16le, 48000 Hz, stereo, 1536 kb/s
Metadata:
creation_time : 2013-03-03 15:47:47
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press ctrl-c to stop encoding
frame= 455 fps=379 q=-1.0 Lsize= 106291kB time=18.94 bitrate=45983.9kbits/s
video:102724kB audio:3558kB global headers:0kB muxing overhead 0.008270%
O out.mov resultante é reproduzido bem, mas o vídeo não é girado. Eu tentei muitos filtros diferentes:
transpose=1
rotate=1
rotate=clock
Tudo com o mesmo resultado.