[tor-bugs] #22548 [Applications/Tor Browser]: Firefox downgrades VP9 videos to VP8 when measured performance is not enough

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#22548: Firefox downgrades VP9 videos to VP8 when measured performance is not
enough
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 Reporter:  cypherpunks                   |          Owner:  tbb-team
     Type:  defect                        |         Status:  reopened
 Priority:  Medium                        |      Milestone:
Component:  Applications/Tor Browser      |        Version:
 Severity:  Normal                        |     Resolution:
 Keywords:  tbb-fingerprinting, tbb-easy  |  Actual Points:
Parent ID:                                |         Points:
 Reviewer:                                |        Sponsor:
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Comment (by gk):

 Replying to [comment:9 cypherpunks]:
 > Replying to [comment:8 gk]:
 > > Thanks for digging out the Mozilla bugs. Actually, this ticket is not
 `tbb-easy` as it is not even clear how we should solve this problem.
 > The same way as on Android. See patch from that ticket, we need
 `IsVP9DecodeFast()` be always `true` for all platforms, e.g. by
 > {{{
 > -#ifdef MOZ_WIDGET_ANDROID
 > +#ifdef 1
 > }}}
 > and also
 > {{{
 > -#ifndef MOZ_WIDGET_ANDROID
 > -#include "WebMSample.h"
 > -#endif
 > }}}
 That's one option. However, note
 https://bugzilla.mozilla.org/show_bug.cgi?id=1286738 where this solution
 got basically reverted. (and we need to take mobile more and more into
 account as we plan to provide a Tor Browser on Mobile)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22548#comment:10>
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