Notices

Guys, I want to cry already
Please help, Linux users.


We have
1.avi
1.***
2.avi
2.***

The task is to batch convert videos to n900 format(maybe with hardsub? Is mplayer can display subtitles correctly on n900?
Using testing-extras.


Yes, im anime fan Sorry also for my English, this is my first post.
If I've chosen wrong forum, please move it to correct

upd.

*** is a subtitle format, A S S ))

Also it will be good to know the best format N900 can handle.

There is no "N900 format". There are some standard formats that the N900 supports, though. :-)

From http://maemo.nokia.com/n900/specifications/ :
Video playback file formats: .mp4, .avi, .wmv, .3gp;
codecs: H.264, MPEG-4, Xvid, WMV, H.263

@nshelekhov: Pretty sure mplayer on the N900 can handle A.S.S. subtitle format. Have you used mplayer on the command line before? If not, then you might want to re-encode on the desktop to use "hard subs."

-John

@Johnx yeah, thank you for your reply, I'll try that. Can you recommend soft for hardsubbing files via command line?

@Andre Klapper but what parameters must I set while encoding video for N900?

UP
I have found some hardsubbed files, but N900 is completely slow at them(starting normally but it gets really stuck after a few seconds), although the size of the video is less then N900 screen size.
Can it be because of high bitrate? That video was converted for PSP.

UP
This is what mplayer exactly outputs:
MPlayer SVN-r29237-4.4.1 (C) 2000-2009 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing Full metal alchemist - 01.mp4.
libavformat file format detected.
[lavf] Video stream found, -vid 0
[lavf] Audio stream found, -aid 1
VIDEO: [avc1] 480x272 24bpp 23.976 fps 0.0 kbps ( 0.0 kbyte/s)
open: No such file or directory
[MGA] Couldn't open: /dev/mga_vid
open: No such file or directory
[MGA] Couldn't open: /dev/mga_vid
[VO_TDFXFB] Can't open /dev/fb0: No such file or directory.
[VO_3DFX] Unable to open /dev/3dfx.
================================================== ========================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
================================================== ========================
================================================== ========================
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
FAAD: compressed input bitrate missing, assuming 128kbit/s!
AUDIO: 48000 Hz, 2 ch, s16le, 128.0 kbit/8.33% (ratio: 16000->192000)
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))
================================================== ========================
[pulse] working around probably broken pause functionality,
see http://www.pulseaudio.org/ticket/440
AO: [pulse] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
VDec: vo config request - 480 x 272 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.76:1 - prescaling to correct movie aspect.
VO: [xv] 480x272 => 480x272 Planar YV12

MPlayer really needs to be compiled with NEON to have a chance at h264/avc1, but neon is proving to be somewhat difficult atm. I suspect someone needs to get a recent gcc and crosscompile it outside scratchbox.

The N900 specs mention h.264, but in tests I was unable to produce any playable h264 except h264 baseline. Most files on the internet are not baseline.

Mplayer output on n900:
MPlayer UNKNOWN-4.2.1 (C) 2000-2009 MPlayer Team

Playing Full metal alchemist - 01.mp4.
libavformat file format detected.
[lavf] Video stream found, -vid 0
[lavf] Audio stream found, -aid 1
VIDEO: [avc1] 480x272 24bpp 23.976 fps 0.0 kbps ( 0.0 kbyte/s)
================================================== ========================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
================================================== ========================
================================================== ========================
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
FAAD: compressed input bitrate missing, assuming 128kbit/s!
AUDIO: 48000 Hz, 2 ch, s16le, 128.0 kbit/8.33% (ratio: 16000->192000)
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))
================================================== ========================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: No such file or directory
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
VDec: vo config request - 480 x 272 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.76:1 - prescaling to correct movie aspect.
VO: [xv] 480x272 => 480x272 Planar YV12
[AO_ALSA] Write error: Broken pipe 0.000 0/ 0 ??% ??% ??,?% 0 0
[AO_ALSA] Trying to reset soundcard.
A: 3.0 V: 2.3 A-V: 0.696 ct: -0.017 0/ 0 106% 13% 13.6% 50 0

************************************************
**** Your system is too SLOW to play this! ****
************************************************

Possible reasons, problems, workarounds:
- Most common: broken/buggy _audio_ driver
- Try -ao sdl or use the OSS emulation of ALSA.
- Experiment with different values for -autosync, 30 is a good start.
- Slow video output
- Try a different -vo driver (-vo help for a list) or try -framedrop!
- Slow CPU
- Don't try to play a big DVD/DivX on a slow CPU! Try some of the lavdopts,
e.g. -vfm ffmpeg -lavdopts lowres=1:fast:skiploopfilter=all.
- Broken file
- Try various combinations of -nobps -ni -forceidx -mc 0.
- Slow media (NFS/SMB mounts, DVD, VCD etc)
- Try -cache 8192.
- Are you using -cache to play a non-interleaved AVI file?
- Try -nocache.
Read DOCS/HTML/en/video.html for tuning/speedup tips.
If none of this helps you, read DOCS/HTML/en/bugreports.html.

After -vfm ffmpeg -lavdopts lowres=1:fast:skiploopfilter=all
and framedrop parameters it seems to be a bit more faster, but sometimes framedrop is very high.

If I play this file with -nosound - and it goes perfect, maybe it is problem with sound?

...

It seems that I should reencode my videofiles to xvid because standart movie player is using hardware acceleration..