[Chimera-users] aPNG

Greg Couch gregc at cgl.ucsf.edu
Tue Dec 7 10:56:57 PST 2021

It turns out it was easy to add.  So APNG support is in both the Chimera 
and ChimeraX daily builds.

     -- Greg

On 12/7/2021 9:52 AM, Tom Goddard via Chimera-users wrote:
> Also Chimera includes ffmpeg so you could have Chimera save your move 
> and h.264 and then just use the Chimera ffmpeg from the command-line 
> to convert that to animated png.  For instance, here
> https://www.reddit.com/r/ffmpeg/comments/5zuvns/how_do_i_use_ffmpeg_apng_encoder/
> it says the following works
> ffmpeg -i input.mp4 output.apng
> Chimera 1.15 ffmpeg on Mac is here
> Chimera-1.15.app/Contents/Resources/bin/ffmpeg
>  Tom
>> On Dec 6, 2021, at 9:32 PM, Greg Couch via Chimera-users 
>> <chimera-users at cgl.ucsf.edu> wrote:
>> Chimera uses ffmpeg to encode movie files.  Searching online, it 
>> appears that ffmpeg supports .png files for output, which are APNG 
>> files.  So it should possible to add that as an output format.  
>> Currently, we are only making bug fixes for Chimera, so if we add 
>> this feature, it would be for ChimeraX.  That said, the movie 
>> encoding support code in ChimeraX is very similar to Chimera's.  So 
>> it looks like it would be easy to backport.  I'll create a ChimeraX 
>> ticket on your behalf so you'll be notified when it is added to ChimeraX.
>>     -- Greg
>> On 12/6/2021 8:21 PM, Frank Irby via Chimera-users wrote:
>>> I produce high quality Animated PNG files and it takes a lot of 
>>> juggling different computers to accomplish.
>>> Is there a way to simply chose APNG from the movie recorder output 
>>> pulldown menue?
>>> Would there be a plug in for that?
>>> My animations can be found at:
>>> https://www.deviantart.com/mandelscape/gallery/24158715/molecular
>>> Thank you
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