When I have a project with proxy clips activated, and I render this project, certain clips are rendered as black. When I deactivate proxy clips for the project, the project renders as expected. Reproducible: Always Steps to Reproduce: 1. Make a project 2. Enable proxy clips for one or multiple videos 3. Place a video in the timeline 4. Render
i cannot reproduce this. try using the latest version of kdenlive and see.
I have the exact same issue. If proxies are enabled some clips render black. If proxies are disabled (project or clip level) the render result is ok. Always reproducible with one file, clean project. If needed I could provide the file. kdenlive 18.04.01 MLT 6.6.0 OS Ubuntu 18.04 Current workaround: Before rendering switch off global proxy under project settings. Regards,
Another finding: Before proxying the file the clip properties show: - Audio codec: AAC - Video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 After proxying the file the clip properties show: - Audio codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 - Video codec: AAC Also bitrate, frequency is mixed up. If render process takes these values into consideration it is obvious that the result is black. This odd behavior does not apply to clips where proxy + render is working properly.
Interesting. Keep the Kdenlive project file before and after that happen. Keep all the footage. Notice exactly the step you have done which lead to this strange behavior. Kdenlive 18.08 with MLT 6.10.0 will be released in the coming next days. After Kdenlive 18.08 is out try again. And post the result.
Out of curiosity I "installed" 18.08 AppImage on Ubuntu. Using the footage in question I do now have a white screen if I place it in the project monitor. Seems to be related to the footage I have.
You have installed the refactoring branch. The actual 18.08.0 AppImage version is here: https://files.kde.org/kdenlive/release/kdenlive-18.08.0-x86_64.AppImage.mirrorlist Try end post the result.
Tried - unfortunately same result - proxy enabled - very fast rendering but black result. Proxies disabled - all ok.
(In reply to fritzibaby from comment #6) > You have installed the refactoring branch. > > The actual 18.08.0 AppImage version is here: > https://files.kde.org/kdenlive/release/kdenlive-18.08.0-x86_64.AppImage. > mirrorlist > > Try end post the result. Are you sure that this is 18.08? Looks like 18.04 - i.e. no automatic audio split when pulling a clip on the timeline.
Yes. You have probably tested with 18.08 beta 18 (refactoring branch). Don’t test with this version as there are still some bugs. The refactoring update will come in December. The 18.08.0 is just a small update of the existing code with mainly: - Fix custom lift/gamma/gain displaying wrong UI BUG: 364127 - Require MLT 6.10 (to avoid the incompatible 6.8)
If the proxy clip is all black, it probably means the transcoding failed and the clip was converted to audio only. If you want us to investigate, please attach the project file here, and a short sample of the video clip could help too. You can extract 3 seconds from your clip with this command ffmpeg -i yourclip.mp4 -c copy -t 3 cut.mp4
Extracting the 3secs from the file as suggested will change the source clip in a way that it will render successfully with PROXY=ON. On top: Using ffmpeg to duplicate the complete clip (ffmpeg -i yourclip.mp4 -c copy cut.mp4) results in an exact copy which (with PROXY=ON) renders successfully. So it has to do with the clip coming directly from the camera (actually DJI GO App using DJI Gimbal on Android). I will try to upload the original file (~150MB) but this might fail due to the size. Regards, Stephan
Again only difference in the two files (original and copied) I can see is through "Clip Properties" when clips are proxied (as mentioned in comment 3 already). Will attach two screenshots: 1) original file proxied - clip properties 2) copied file proxied - clip properties Seems like I always have this issue with files from the DJI Go App with audio. Clips from the same app without Audio do not have this issue) Regards, Stephan
Created attachment 115866 [details] Original File proxied - clip properties
Created attachment 115867 [details] Copied file proxied - clip properties copied the whole file with ffmpeg -i orig.mp4 -c copy target.mp4
The properties of the original file proxied looks “weird”. Do you have another camera/cell phone to test?
This bug is outdated, all the timeline code was rewritten to avoid exactly this kind of issue. As it has been a while since this was reported, can you please test and confirm if this issue is still occurring or if this bug report can be marked as resolved.
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!