Topics and tips about the output of video from a Kdenlive project

Are You at Risk of Having Tonsil Stones? | Part 2

b. The Importance of being Aware if You are at Risk

Tonsils are considered to be one of the first lines of protection of the body in the fight against bacteria and germs, but as a result of the way they are made, and the stuff they are doing; they can become a haven for disease and bacteria. The crevices of a person’s tonsils can develop little white balls of material that are called tonsil stones or tonsilloliths.

People usually describe them as white spots on the tonsils. They are usually made of calcium, carbonate and ammonia. The most efficient way to see if you have tonsil stones is by looking for them yourself in the mirror. Open your mouth as wide as you can and use a flashlight to see if you have white spots on your tonsils.


Are You at Risk of Having Tonsil Stones? | Part 1

a. Overview

Tonsil stones are clusters of hard deposits of calcium that form in the crevices of our tonsils. As they take place usually in the palatine tonsils, they may also come about in the lingual tonsils. It is said, by experts, to be 300 mg to 42 g of weight and they are made up mostly of calcium. Tonsil stones may also have other minerals mixed in them like magnesium and phosphorus, alongside carbonate and ammonia.

A number of people may feel like tonsil stones are foreign objects jammed in the tonsil crypt and they may also annoy you because they are very hard to get rid of, but they normally are not damaging. Tonsil stones are also one of the reasons why people have bad breath. Those are called halitosis.

Tonsilloliths is what tonsil stones are formally recognized. A number of people portray them as spots that are white in the throat or spots that are white on the tonsils and they are normally white with a yellow shade in color.


How to play Panasonic P2 MXF files in QuickTime on Mac

Most MXF media files are from Sony, Canon and Panasonic’s high-end camcorders, such as Panasonic P2 series. These camera footages are mutually incompatible due to opaque subformat options obscured behind the MXF file extension. Without  conversion tools, it is impossible to distinguish these  incompatible formats.


Transcode MPEG-2 MXF files to Apple ProRes codec for FCP

If you have used high-end camcorders, you may be familiar with the MPEG-2 MXF files, these MXF videos are often recorded by Canon XF, Panasonic P2 and Sony camcorders. Most MXF videos are in MPEG-2 codec, if you want to edit MPEG-2 MXF files in Final Cut Pro, you may find it takes much time to rendering; what’s more, you can’t edit the MXF files smoothly frame by frame, what’s the reason? That’s MPEG-2 codec is not well to FCP, as well as the MXF format.


Can't render more than cca. 20 s. video (Solved)


I use kdenlive 9.2 from Sunab repository, melt 0.8.2 in Xubuntu 12.04 and I have problems with rendering. Nothing works, I am not able to render more than 20 seconds. Always is there this warning:

[wav @ 0x8469480] max_analyze_duration reached
[wav @ 0x8469c40] max_analyze_duration reached
[libx264 @ 0xb480cf60] [Eval @ 0xb51ef99c] Invalid chars '.6' at the end of expression '0.6' [libx264 @ 0xb480cf60] Unable to parse option value "0.6"
[wav @ 0xb3810580] max_analyze_duration reached
[wav @ 0xb38df2e0] max_analyze_duration reached
[h264 @ 0x961d89a0] reference picture missing during reorder [h264 @ 0x961d89a0] Missing reference picture [h264 @ 0x961d89a0] decode_slice_header error
[h264 @ 0xb36c5c80] reference picture missing during reorder [h264 @ 0xb36c5c80] Missing reference picture [h264 @ 0xb36c5c80] decode_slice_header error


Rendering incomplete,

I am working on a project.
it was rendering OK the other day.
Then I added some title clips. and now it stops about about 3:51 or so
i even removed one title and it was still stopping
No errors, not in the command line, as root either.

I am new to video editing with kdenlive so I am wondering what I am doing wrong.
I've ran the updates so i should have xubuntu 12.4
I am not running kdenlive 0.92, 0.8 I think.

aNy ideas or anything that I can try would be very helpful!


HDV NTSC 1080 30p isn't rendering entire Zone nor Project?

Hey everyone, I have been working video editing lately using Kdenlive v4.8.5 running on Lubuntu v12.04 64bit.
The final rendering looks beautiful, though only about 95% of the entire video that I want rendered is actually encoded.
I tried to render the video by choosing "Entire Project" and "Zone Selection".
I made sure that the "Zone Start" and "Zone Stop" handles were placed in the correct positions on the timeline.
Yet only about 95% of the project has been rendered... and it's consistent, even when choosing a different "Render Profile/Codec".


Performance settings?

So far I have not managed to render the full time line. At some (random) point Kdenlive bumps out with no error message. What would be nice (for debugging) was it did not take hours only to get up to that point of no result. What do you do to speed up the rendering process?

- Rendering threads = 8 but System Monitor shows CPUs oscillating around 50% load with only the occasional spark up ... I wouldn't mind if the CPU capacity was more solicited.


How to health check / repair MTS files?

This is not really a Kdenlive issue but perhaps somebody here can help me ... finally I managed to upload my ~450 video clips (AVCHD MTS) into Kdenlive (proxies enabled). Rendering crashes eventually. After some time I found out that it happens always at the same clip. I then remove that clip from the timeline, restart rendering again until at some time later it crashes at yet another clip ...

The clips play well in VLC, but upset Kdenlive when rendering. Rendering in Kdenlive may just stall, or give an error message, e.g.
Rendering of /home/hlan/Desktop/STREAM/debug.mpg crashed
[h264 @ 0x798062e0] reference picture missing during reorder [h264 @ 0x798062e0] Missing reference picture
[mpeg @ 0x7a80adc0] VBV buffer size not set, muxing may fail
[mpeg @ 0x7a80adc0] buffer underflow i=0 bufi=234341 size=622092 [mpeg @ 0x7a80adc0] packet too large, ignoring buffer limits to mux it


How to interrupt a rendering process and resume later?

Is it possible?

I have to wait abt. 6 hours to render a 30-minute video in 1080p 25fps HD format. If I make one little change somewhere, I have to do it all over again!

Otherwise, it works OK.




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