https://bugs.kde.org/show_bug.cgi?id=358997

            Bug ID: 358997
           Summary: kdenlive-git HEAD doesn't use proxy in clip/project
                    monitor
           Product: kdenlive
           Version: unspecified
          Platform: Compiled Sources
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Video Display & Export
          Assignee: j...@kdenlive.org
          Reporter: anton.gubar...@gmail.com

I shoot in AVCHD. When I jog thru my clips forward, I usually can move
frame-by-frame and my monitor is updated for every frame. When I move backward,
I usually see no updates in the monitor until I encounter a key frame. I used
to create proxies to mitigate this problem. The profile I use to encode my
proxies is DNxHD 720p@60M - this is what my laptop can handle.

When my proxies are created, I expect that the playhead movements are updated
in the monitor as they go. I see the same keyframed update of the monitor when
I go backward instead. Besides that, the quality of the monitor stays at 1080p
as originally filmed instead of going down to 720p. 

When I copy my proxy file and add it to the project bin as a usual clip, I can
observe the expected smoothness of backward motion.   

Reproducible: Always

Steps to Reproduce:
1. create a DNxHD proxy of a 1080p @ 50 frames/sec
2. go back in either clip or project monitor
3. observe no frame update in backward jog.

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