[Kdenlive-devel] max_analyze_duration reached

[Vincent PINON]

Le 09/22/2014 03:30 AM, Dan Dennedy a écrit :
> On Sun, Sep 21, 2014 at 5:30 PM, Pascal Fleury
> <fleury at users.sourceforge.net <mailto:fleury at users.sourceforge.net>>
> wrote:
>
>     Hello,
>
Hello Pascal,
>
>
>     I am completely stuck, any help welcome...
>
>     I am about to finish a video project, where I use pretty long
>     files (several 1080p at 25 13 minute chunks, audio @ 96kHz stereo 32
>     bit float for 1.5 hours) and it seemed to work nicely so far. I
>     used proxy clips all along, as working off the original video is
>     just not possible.
>
>  
> I never use proxy clips, almost always source clips, and very
> occasionally transcode problematic clips.
>  
>
>     Now I try to render the project, and I face many issues: first,
>     when rendering the project with proxy clips set on the clips (the
>     little 'P'), it does not use the full resolution for the final
>     render. I think this is a known issue (ignores the little checkbox
>     in the render dialog).
>
No, this is not an issue I have faced already (for more than 2 years).
Which version of Kdenlive (&MLT) are you using ?
>
>
>     My real issue is that if I remove the proxy clips, then it tries
>     to re-render the thumbnails on the time line, and gets them all
>     wrong. The files are correct, but it does not display the right
>     images (takes some others), and renders full black video.
>
Stupid question (but sometimes we need to open eyes when in panic ;-)
)... if source media are not on the same drive as project & proxies, is
that drive properly plugged & mounted ?
>
>
>     After saving and reloading, it's even worse, as I face the issue
>     with lots of lines like in the title (more, see below). And after
>     this, _all_ clips on the timeline are zero length, completely
>     ruining my project. I use git for all text files, and did regular
>     checkpoints, so I have not lost much besides time, and rollbacks
>     are easy.
>
>
> Sounds like "remove the proxy clips" is not a safe operation.
Also never seen problems switching proxies on and off (but I don't use
thumbnails, except for testing)...
>  
>
>     So essentially, I am stuck with a project I cannot render after 60
>     hours of editing time... Any help ? Anything I
>
>
> I think you need a workaround for that problem with the checkbox being
> ignored, but I do not know anything about the proxy mode in Kdenlive.
> Maybe there is a way to modify the xml and render it with melt.
1) enable debug output (run "kdebugdialog" and check kdenlive)?
2) in render dialog, generate scripts.
for huge projects like yours, kdenlive eats much RAM, and melt will need
also much for full res rendering.
so closing kdenlive and rendering by launching the *.sh helps in general
(but your problems are unrelated, this is a side remark).
with scripts you get plain *.mlt files that the ones actually
transmitted to melt for rendering (ie, replacing proxies etc.)
so these are the files you can analyze to better understand your
rendering problem: try to diff *.mlt checking and unchecking the "use
proxy" option: of course the source media are changing, but all lengths
and playlists should remain the same...
>  
>
>     could do to get a final video from my project ? Or is this
>     max_analyze_duration from an underlying tool that I could
>     downgrade/upgrade ?
>
> I can definitely tell you that the message "max_analyze_duration
> reached" comes from libavformat. It appears very frequently in many
> tools (too verbose), is related to determining the duration of a clip,
> and is not likely related to your problem.
yes, max_analyze_duration is coming all the time.
>  
>
>     Also, I faced numerous issues with this project, mostly due to the
>     size of data and project I think, and I should probably do a write
>     up. Where would be a good avenue for this ? This list ?
>
Bug tracker...
>
>
>     Thanks,
>     Pascal
>
Hope we can find the solution for your problem...
Vincent
>
>
>     $ kdenlive
>     Fontconfig warning: "/etc/fonts/conf.d/50-user.conf", line 14:
>     reading configurations from ~/.fonts.conf is deprecated.
>     [wav @ 0x7fe2f45da760] max_analyze_duration reached
>     [wav @ 0x7fe2f45e2620] max_analyze_duration reached
>     [wav @ 0x7fe2f48549c0] max_analyze_duration reached
>     [wav @ 0x7fe2f462a360] max_analyze_duration reached
>     [wav @ 0x7fe2f4608b20] max_analyze_duration reached
>     [wav @ 0x7fe2f4613220] max_analyze_duration reached
>     [mpegts @ 0x7fe2f4909a40] max_analyze_duration reached
>     [mpegts @ 0x7fe2f490cd80] max_analyze_duration reached
>     [mpegts @ 0x7fe2f4c35680] max_analyze_duration reached
>     [wav @ 0x7fe2f49175e0] max_analyze_duration reached
>     [wav @ 0x7fe2f49196a0] max_analyze_duration reached
>     [mpegts @ 0x7fe2f4c24220] max_analyze_duration reached
>     [mpegts @ 0x7fe2f4c29c00] max_analyze_duration reached
>     [mpegts @ 0x7fe2f49bfb20] max_analyze_duration reached
>     [...and hundreds more...]
>
>