<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Sep 22, 2014 at 10:05 AM, Pascal Fleury <span dir="ltr"><<a href="mailto:fleury@users.sourceforge.net" target="_blank">fleury@users.sourceforge.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div dir="ltr">Hi Dan,<br><div class="gmail_extra"><br><div class="gmail_quote"><span class=""><span>On Mon, Sep 22, 2014 at 3:30 AM, Dan Dennedy <span dir="ltr"><<a href="mailto:dan@dennedy.org" target="_blank">dan@dennedy.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span>On Sun, Sep 21, 2014 at 5:30 PM, Pascal Fleury <span dir="ltr"><<a href="mailto:fleury@users.sourceforge.net" target="_blank">fleury@users.sourceforge.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr">Hello,<div><br></div><div>I am completely stuck, any help welcome...</div><div><br></div><div>I am about to finish a video project, where I use pretty long files (several 1080p@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.</div></div></blockquote><div> </div></span><div>I never use proxy clips, almost always source clips, and very occasionally transcode problematic clips.</div></div></div></div></blockquote><div><br></div></span></span><div>On my machine, navigating through original clips is way too slow. Also I have 4 video tracks, with mostly 2 tracks having a video at any given time. Proxy clips are actually making the whole thing very usable, if not really comfortable.</div></div></div></div></div></div></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class=""><span><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div></div><div>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).</div><div><br></div><div>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.</div><div><br></div><div>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.</div><div><br></div></div></blockquote><div><br></div></span><div>Sounds like "remove the proxy clips" is not a safe operation.</div></div></div></div></blockquote><div><br></div></span></span><div>I think it tries to get the original clip length, and from the error message, seems to not get a useful answer. If it returns a length of zero (or negative) in case it reaches the maximum analysis length, then it would explain why my clips get all shrunk on the timeline.</div></div></div></div></div></div></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class=""><span><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div></div><div>So essentially, I am stuck with a project I cannot render after 60 hours of editing time... Any help ? Anything I </div></div></blockquote><div><br></div></span><div>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.</div></div></div></div></blockquote><div><br></div></span></span><div>I will fiddle a bit more with that checkbox, as I think I had other issues with sub-projects that I imported.</div><span class=""><span><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div>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 ?</div><div><br></div></div></blockquote></span><div>I can definitely tell you that the message "<span style="font-family:arial,sans-serif;font-size:13px">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.</span></div></div></div></div></blockquote><div><br></div></span></span><div>As I mentioned above, does libavformat then return a size of e.g. 0 if it could not analyze it fully ?</div></div></div></div></div></div></blockquote><div><br></div><div>I just looked at libavformat code to learn more about this. It is not only determining the duration; it is gathering all the essential information about the file like tracks, codecs, fps, initial timestamps, metadata, etc. Depending upon the format, sometimes it is not clear when all of the information has been collected. In that case it reads frames/packets representing up to max_analyze_duration (5s default), to finish collecting more possible information. More often than not, it will have collected it, but it is being diligent and reporting verbosely about its diligence.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>Is there a cmdline tool that I could run on these WAV and video files to see the failure mode ?</div></div></div></div></div></div></blockquote><div><br></div><div>melt -verbose {filename} -consumer xml time_format=clock</div><div><br></div><div>Then, look for the "length" property (HH:MM:SS.ms) to see if it seems correct. It also reports some information about streams and codecs so you can determine if that looks sane.</div><div><br></div></div>-- <br>+-DRD-+
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