Bug 414225 - field order setting is ignored when exporting interlaced with vcodec=libx264
Summary: field order setting is ignored when exporting interlaced with vcodec=libx264
Status: RESOLVED WORKSFORME
Alias: None
Product: kdenlive
Classification: Applications
Component: Rendering & Export (show other bugs)
Version: 19.08.3
Platform: Appimage Linux
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-11-17 10:45 UTC by tcl_de
Modified: 2021-10-27 04:35 UTC (History)
2 users (show)

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Description tcl_de 2019-11-17 10:45:02 UTC
SUMMARY
I have got an interlaced movie, where kdenlive wrongly detects bff field order, so I override it to tff field order in the clip properties.
Then I render the project with the libx264 codec, but MediaInfo tells me that the rendered file is in bff field order and that in the x264 encoding section, interlaced=bff - regardless whether I add x264opts=tff=1 or whether I set enforce interlaced->tff in the additional rendering settings.

My simple export profile is:
f=mpegts acodec=ac3 vcodec=libx264 x264opts=tff=1 crf=%quality ab=%audiobitrate+'k'

SOFTWARE/OS VERSIONS
Appimage: kdenlive-19.08.3b-x86_64.appimage
Linux: debian buster
KDE Frameworks Version: 5.61.0
Qt Version: 5.12.4
Comment 1 Massimo Stella 2021-09-27 15:54:40 UTC
The interlacing feature in the clip properties panel is not able to actually reverse the field dominance. But this is not the only parameter that when you change from this window doesn't affect for real the clip and this is something which has to be fixed. A similar issue exists for the export window when you force the interlacing field priority. It's beffer to force the interacing export and the piority by the export script by using the progressive=0 and order=tt for the top field.
The way I use to control the field priority is by using the Interlace field order effect that you can find in the video effect folder. This effect can be placed on the clip, on the track and even on the master track wherever you need to apply the conversion. Let me know if this works for you.

Cheers.
Comment 2 Julius Künzel 2021-09-27 18:22:46 UTC
Setting to NEEDSINFO (see Massimo's comment above)
Comment 3 Bug Janitor Service 2021-10-12 04:35:40 UTC
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
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If you have already provided the requested information, please
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Comment 4 Bug Janitor Service 2021-10-27 04:35:20 UTC
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!