Re: [gentoo-user] Re: off topic: rotating a video

On Mon, Feb 16 2015, Nikos Chantziaras wrote:

> On 17/02/15 01:39, gottlieb@×××.edu wrote:
>> On Mon, Feb 16 2015, Nikos Chantziaras wrote:
>>
>>> On 16/02/15 22:51, gottlieb@×××.edu wrote:
>>>> I apologize in advance for this off topic query.
>>>>
>>>> I took a video with my phone (galaxy note 4) and via google+ uploaded it
>>>> to my mail laptop.  It is an mp4 and plays fine on both the phone and
>>>> the labtop except that it is sideways.
>>>>
>>>> I was surprised that neither the player on the phone nor the player on
>>>> the laptop (totem, I run gnome) seems to offer a rotation option.
>>>>
>>>> Am I missing a slightly hidden option or do I need another program.
>>>> I do not do video editing and do no plan to in the near future.
>>>
>>> You can change the metadata of the mp4 file without re-encoding
>>> it. This requires that the player you play the video in actually
>>> respects that metadata though! mplayer and mpv respect it. Your
>>> phone's player might not.
>>
>> Not worried about the phone.  I won't touch the file there and will
>> probably delete it when I get the one right on the laptop.
>>
>>> You need ffmpeg for this (media-video/ffmpeg).
>>
>> That I have (1.2.6-r1, highest stable).
>>
>>>    ffmpeg -i yourvideo.mp4 -c copy -metadata:s:v:0 rotate=90 output.mp4
>>
>> I did this command but the result is not rotated (my player is totem).
>
> Try mpv or mplayer. If that shows it rotated, then it's totem ignoring
> the metadata.

I built and tried mplayer.  Again not rotated.  I ran it from the
terminal.  Below is the output up to when I killed it

Is it possible I did the ffmpeg command wrong?

thanks,
allan

newlap tmp # mplayer r90.mp4 
MPlayer SVN-r36370 (Gentoo)-4.8.3 (C) 2000-2013 MPlayer Team
MMX2 supported but disabled

Playing r90.mp4.
libavformat version 54.63.104 (external)
libavformat file format detected.
[h264 @ 0x7ff80716e920]Warning: not compiled with thread support, using thread emulation
[aac @ 0x7ff80716e920]Warning: not compiled with thread support, using thread emulation
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0, -alang eng
VIDEO:  [H264]  1920x1080  24bpp  29.917 fps  16996.4 kbps (2074.8 kbyte/s)
Clip info:
 major_brand: isom
 minor_version: 512
 compatible_brands: isomiso2avc1mp41
 encoder: Lavf54.63.104
Load subtitles in ./
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 54.92.100 (external)
[h264 @ 0x7ff80716e920]Warning: not compiled with thread support, using thread emulation
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
[aac @ 0x7ff80716e920]Warning: not compiled with thread support, using thread emulation
AUDIO: 48000 Hz, 2 ch, floatle, 250.1 kbit/8.14% (ratio: 31257->384000)
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
AO: [alsa] 48000Hz 2ch floatle (4 bytes per sample)
Starting playback...
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 1920x1080 => 1920x1080 Planar YV12 
A:   7.3 V:   7.3 A-V:  0.000 ct:  0.033   0/  0 70%  1%  0.6% 0 0 

Exiting... (Quit)
newlap tmp #