#7298: use html5 video tag for animations
------------------------------+---------------------------------------------
Reporter: whuss | Owner: whuss
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.6
Component: graphics | Resolution: fixed
Keywords: animation, video | Author: Wilfried Huss
Upstream: N/A | Reviewer: Pablo Angulo
Merged: | Work_issues:
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Comment(by niles):
Replying to [comment:12 whuss]:
> Replying to [comment:11 niles]:
> > Other things I could check?
>
> I don't know what the problem is. The code just creates a bunch of png
files with the frames of
> the animation and then calls 'png2theora' to convert it an ogv file.
>
> The relevant code is at the lines 405-415 of sage/plot/animate.py. You
can try to remove the
> try/except block to see the real error message of check_call.
Thanks; the problem seems to be that, for me, `check_call` needs to be
called with a list of inputs -- giving the command as a single string
fails for some reason (`png2theora` returns its usage message, so probably
it is not receiving the arguments in the expected format):
{{{
sage: check_call(["png2theora", '-o "tmp2.ogv"', '%08d.png'])
9 frames, 202x106
Compressing....
./00000000.png
./00000001.png
./00000002.png
./00000003.png
./00000004.png
./00000005.png
./00000006.png
./00000007.png
./00000008.png
done.
0
}}}
but
{{{
sage: check_call(["png2theora", '-o "tmp2.ogv" %08d.png'])
png2theora 1.1
Usage: png2theora [options] <input>
...
}}}
and
{{{
sage: check_call('png2theora -o "tmp3.ogv" %08d.png')
---------------------------------------------------------------------------
OSError Traceback (most recent call
last)
...
OSError: [Errno 2] No such file or directory
}}}
The last command is a simplified version of what appears in
`sage/plot/animate.py` . . . does it really work for other people here?
And if so, why?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7298#comment:13>
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