,h264 playback - help !

[timmoore46]

I'm a proud owner of the latest Pi complete with WiFi and a 8MP camera

After a bit of hassle with getting a 64GB sd card with Raspbian 18th March 2016 working on it, I tried this:-

raspivid -t 25000 -o video.h264

and lo a file duly arrived in the home directory ! Brill

Never having heard of .h264 left me with a struggle to find something to play it on.

Moving the file to Ubuntu 14.04 and downloading smplayer I could now watch 25 seconds of video ! I had hoped ! *LOL*

yes it played ! in about 5 seconds !

Any thoughts on what I have to do to watch this video at the right frame rate for smplayer...., would be greatly appreciated !



Tim

[DirkS]

See e.g. viewtopic.php?f=35&t=145114#p956667

[timmoore46]

Many thanks for that info, I will try it out !

by the way how do I install omxplayer ?

is it

sudo apt-get install omxplayer

???

Many thanks again,



Tim

[SkyRise]

Yes,

Code: Select all

sudo apt-get install omxplayer

will install omxplayer

Also, when installing packages, apt keeps a copy of the file it downloaded for installation. This cache can become quite big over time.
A

Code: Select all

sudo apt-get clean

will prune the download files from the cache.

[timmoore46]

Many many thanks,



Tim

[timmoore46]

tried that and omxplayer and it installed but ./omxplayer yielded

No such file or directory....

all this was in the home directory...

so I'm still stuck..

Any more tips greatly appreciated ?

Tim

[DirkS]

tried that and omxplayer and it installed but ./omxplayer yielded

Use it without the ./

[RaTTuS]

if you want to play it back on other machines then you may want to container the file
as the .h264 is a raw file you need to tell it that it is
25fps
or it may just play back as fast as possible

[timmoore46]

Got smplayer downloaded to the Pi and it took 3 minutes to play the 25second video clip

the version of smplayer was.....14.9.0

it took a bit to get smplayer to accept it !

file/multimedia (bottom right on screen), scrolled down its menu and settle on 'All Filesand high lighted video.h264
and it played it very very slowly !

What do I do next ?

Any thoughts anyone ?



Tim

[timmoore46]

if you want to play it back on other machines then you may want to container the file
as the .h264 is a raw file you need to tell it that it is
25fps
or it may just play back as fast as possible

How do you tell it that its 25fps ?

Many thanks for responding !



Tim

[ghans]

You have to use a muxer like MP4Box after you've finished
recording to create "proper" .mp4 files from raw .h264.

Code: Select all

sudo apt-get install gpac
MP4Box  -fps 30  -add infile.h264 outfile.mp4
omxplayer outfile.mp4

ghans

[timmoore46]

Many many thaks for responding. I'll try MP4Box.



Tim

[timmoore46]

I put the video.h264 file on a PC running Ubuntu 14.04 and installed 'gpac' and that automatically woke a variant of VLC which ran the video clip close to real time, but also put it into a continuous loop.

Now that's a huge improvement over being massively too slow or massively too fast.

Technically I don't know what I'm doing, just poking it with a stick until I stumble on a satisfactory solution.

I'm very very grateful for all the tips and suggestions the members of this Forum have offered !



Tim

[ghans]

Both the "raspivid" command and the "MP4Box" command
have an "fps" option - it obviously needs to be the same
for both commands.


ghans