[MPlayer-users] too SLOW to play HD file

[The Wanderer]

Oliver Seitz wrote:

> Am 05.04.2009, 09:39 Uhr, schrieb Rilawich Ango
> <maillisting at gmail.com>:
> 
>> Hi all,
>> When I use mplayer to play 720p (HD file) movie, it flickers so
>> much with the following message. What to do to make the movie
>> playing smoothly? ango
> 
> It looks like mjpeg codec.
> 
>> VIDEO:  [jpeg]  1280x720  24bpp  30.000 fps    0.0 kbps ( 0.0 kbyte/s)
>> ==========================================================================
>> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
>> Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG decoder)
>> ==========================================================================
> 
> That in fact is not a video codec, but one still picture after
> another. It's got some advantages to use when cutting and assembling
> videos, but it's not a codec made for smooth playback. Due to the
> immense data rate mjpeg needs, I presume it's just data can not
> travel through your system fast enough. If you have to use mjpeg for
> playback, go buying several of the fastest harddisks (like 10000rpm
> types) and connect them in RAID0 or RAID5 array. That might give
> bandwith that can cope with mjpeg.

Wouldn't storing the file on a RAM disk potentially also work, if disk
throughput is the problem?

-- 
       The Wanderer

Warning: Simply because I argue an issue does not mean I agree with any
side of it.

Secrecy is the beginning of tyranny.