Comment 1 for bug 692574
Revision history for this message
| Keith Hughitt (keith-hughitt) wrote Re: Generate WebM/Ogg videos for each movie request | #1 |
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Update:
As of 2011/01/03, the time it takes to generate a WebM movie of comparable quality to currently generated ones takes about 10-20x longer.
For example, for a specific test (~1080p, 100 frame AIA 171 image) the recording times were:
H.264 ultrafast 1.6s
WebM qmax 1 26.4s
Until the encoding time for WebM goes down it looks like the above queuing method will be the best way to handle movie requests
while supporting both H.264 and WebM.
As for Ogg support, since the quality is not as good and the encoding times are also slow, it is probably best just to use Flash/H.264 for Firefox 3.5 and lower. As of version 4 Firefox uses WebM/VP8 instead of ogv.