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Today

Sybren A. Stüvel (sybren) updated subscribers of T68091: Adding a corrupt video crashes Blender.
Thu, Sep 19, 11:57 AM · Images & Movies, Video Sequencer, BF Blender
Philipp Oeser (lichtwerk) added a comment to D5495: Fix T68700: Incorrect 'absolute' timing of animated masks in the Video Sequence Editor.

@Campbell Barton (campbellbarton), @Sergey Sharybin (sergey): do you think this can go in?

Thu, Sep 19, 10:05 AM · Masking, Video Sequencer, BF Blender

Yesterday

Sybren A. Stüvel (sybren) added a comment to T68091: Adding a corrupt video crashes Blender.

ffprobe -v error -hide_banner -print_format json -show_streams -show_format shows the following framerate/time related fields for the video stream in that file:

Wed, Sep 18, 5:10 PM · Images & Movies, Video Sequencer, BF Blender
Peter Fog (tintwotin) assigned T69924: Video Editor: Prefetch stops when moving playhead and makes Blender hang on new file. to Richard Antalik (ISS).
Wed, Sep 18, 7:02 AM · Video Sequencer, BF Blender
Peter Fog (tintwotin) assigned T69929: Video Editor: When playhead catches up with prefetch cache, playback chokes. to Richard Antalik (ISS).
Wed, Sep 18, 7:01 AM · Video Sequencer, BF Blender
Dalai Felinto (dfelinto) added a comment to T69334: Video Sequencer: Very low framerate.

Thanks for the reply @Richard Antalik (ISS).

Wed, Sep 18, 4:01 AM · Video Sequencer, BF Blender
Richard Antalik (ISS) added a comment to T69334: Video Sequencer: Very low framerate.

@Richard Antalik (ISS) can you take a look at this? Not the regression from 2.76 to 2.78. But the difference between the default VSE settings in 2.80 and 2.79 that makes a video "by default" to play slower in 2.80. It must be one of the default settings that are different.

Wed, Sep 18, 3:00 AM · Video Sequencer, BF Blender
Dalai Felinto (dfelinto) updated the task description for T69334: Video Sequencer: Very low framerate.
Wed, Sep 18, 1:25 AM · Video Sequencer, BF Blender
Dalai Felinto (dfelinto) added a project to T69334: Video Sequencer: Very low framerate: Video Sequencer.

@Richard Antalik (ISS) can you take a look at this? Not the regression from 2.76 to 2.78. But the difference between the default VSE settings in 2.80 and 2.79 that makes a video "by default" to play slower in 2.80. It must be one of the default settings that are different.
Maybe the reporter (@Félix (Miadim)) can help nailing this down as well? You should be able to do it without any coding.

Wed, Sep 18, 1:23 AM · Video Sequencer, BF Blender
Christopher Anderssarian (Christopher_Anderssarian) added a comment to T69927: Video Editor: Opening several Sequencer area instances will cause bad playback rate.

TBO Timelines have always been a resource hog.
And what's also demonstrated in your gif is moving the mouse over different elements causes the UI to draw at different frame rates...
ref: T60336#596645

Which editors are refreshed depends on where you start the playback. This is by design, and starting playback over the 3D viewport will generally be fastest.
Optimizations to animation playback of other editors are possible, but not considered a bug.

Wed, Sep 18, 12:48 AM · Video Sequencer, BF Blender
Willi (willi) added a comment to T69658: VSE: Preview in Video Sequencer window sometimes displays wrong frame.

Just press the Download button below the video.

Wed, Sep 18, 12:11 AM · Video Sequencer, BF Blender

Tue, Sep 17

Richard Antalik (ISS) added a comment to T69658: VSE: Preview in Video Sequencer window sometimes displays wrong frame.

@Willi (willi) I did receive it, but I am unable to download the file, it seems to let me watch it only.

Tue, Sep 17, 11:55 PM · Video Sequencer, BF Blender
hudson barkley (snuq) added a comment to T63607: VSE video strips with audio get packed into the .blend file when auto-packing enabled, leading to crashes with large amounts of videos.

Bump.
This is still an insta-crash in 2.81... and its a rather serious issue for anyone using the vse along with scene strips... im not sure why this is still considered low priority.

Tue, Sep 17, 9:41 PM · Video Sequencer, BF Blender
hudson barkley (snuq) added a comment to T65046: VSE: importing multiple movie clips with a lower framerate than the project causes the audio to be placed alternating above and below movie strips..

i realize that fixing the above/below behavior is a bit of a big thing, but could we at least fix the issue referenced in https://developer.blender.org/T64964 with a single strip?
It shouldnt be much to fix that, just add an 'if audio imported also, add one to the video channel'... also, adding a check to prevent adding to channel 0 is probably a good idea.

Tue, Sep 17, 9:25 PM · Video Sequencer, BF Blender
Jacques Lucke (JacquesLucke) raised the priority of T69927: Video Editor: Opening several Sequencer area instances will cause bad playback rate from Needs Information from User to Needs Triage by Developer.
Tue, Sep 17, 9:22 PM · Video Sequencer, BF Blender
Peter Fog (tintwotin) added a comment to T69927: Video Editor: Opening several Sequencer area instances will cause bad playback rate.

@Jacques Lucke (JacquesLucke) It is properly dependent on how powerful your computer are. Mine is not very powerful, so I'm just using a 720p clip for the gif above, where the effect is quite visible. Maybe you could try with some 4k footage and keep adding sequencer areas while the video is playing(uncached) timeline in an area with sequencer+preview.

Tue, Sep 17, 9:12 PM · Video Sequencer, BF Blender
Jacques Lucke (JacquesLucke) added a comment to T69927: Video Editor: Opening several Sequencer area instances will cause bad playback rate.

I cannot reproduce it in my simple test case. Can you reproduce this with any video? A test file would probably be helpful.

Tue, Sep 17, 4:40 PM · Video Sequencer, BF Blender
Nathan Lovato (gdquest) added a comment to D5807: Remove the use of eval in Fades operators, re-enable fades.

Makes sense! Just made and tested the change, everything should be working now.

Tue, Sep 17, 2:25 PM · Video Sequencer
Nathan Lovato (gdquest) added a comment to D5807: Remove the use of eval in Fades operators, re-enable fades.
  • Optimize fcurve lookup
Tue, Sep 17, 2:24 PM · Video Sequencer
Campbell Barton (campbellbarton) added inline comments to D5807: Remove the use of eval in Fades operators, re-enable fades.
Tue, Sep 17, 12:52 PM · Video Sequencer
Nathan Lovato (gdquest) added a comment to T69889: VSE Playback hangs on every cut in a video strip..

same problem regarding laggy caching/preview exists for the VSE's own effects strips, to which proxies don't even apply. Just tonight I tried to add a scene strip of a very simple 4 second text animation to the VSE, nothing fancy at all. Yet, the VSE cannot handle it. It takes 1-3 seconds to cache in each frame, which took a total of about 2-3 minutes to fully cache in.

Tue, Sep 17, 9:07 AM · Video Sequencer
Justin (Blender_Frenzy) added a comment to T69889: VSE Playback hangs on every cut in a video strip..

@Richard Antalik (ISS) @Nathan Lovato (gdquest) You guys are awesome! Thank you so much for your replies :) First I want to apologize if any of my comments sounded harsh or ignorant. I do admit I'm fairly ignorant when it comes to coding and developing, but I never mean to complain. I truly am grateful for everything that you and the other Blender developers do. You all have accomplished so much! I absolutely love Blender and I owe it to such hard working people like you. Sometimes I just don't know how to phrase my confusion or problems in the best way. But thank you for putting up with me :D

Tue, Sep 17, 8:46 AM · Video Sequencer
Willi (willi) added a comment to T69658: VSE: Preview in Video Sequencer window sometimes displays wrong frame.

Hi Please email me link to video file at richardantalik at gogle mail

Tue, Sep 17, 12:22 AM · Video Sequencer, BF Blender

Mon, Sep 16

Nathan Lovato (gdquest) added inline comments to D5807: Remove the use of eval in Fades operators, re-enable fades.
Mon, Sep 16, 6:55 PM · Video Sequencer
D5807: Remove the use of eval in Fades operators, re-enable fades is now accepted and ready to land.
Mon, Sep 16, 5:37 PM · Video Sequencer
Sergey Sharybin (sergey) updated subscribers of T68091: Adding a corrupt video crashes Blender.

I don't think you need a huge amount of ram to debug this, just set a breakpoint in startffmpeg and step through until anim->duration is assigned.

Mon, Sep 16, 3:20 PM · Images & Movies, Video Sequencer, BF Blender
Nathan Lovato (gdquest) added a comment to T69889: VSE Playback hangs on every cut in a video strip..

@Richard Antalik (ISS) Regarding Justin's problem, nowadays you have quite a few video editing packages that allow you to work without proxies using compressed h264 footage at 1080p. In the free software world, Olive has great playback and scrub performances like that.

Mon, Sep 16, 1:01 PM · Video Sequencer
Richard Antalik (ISS) added a comment to T69684: Sound Strip Audio "Pan" defaults are misleading .

I mean this could be enum for placement and pan field of -1 to 1 range.

Mon, Sep 16, 12:34 PM · Audio, Video Sequencer, BF Blender
Richard Antalik (ISS) added a comment to T69889: VSE Playback hangs on every cut in a video strip..

I can not reproduce this with proxies..
There are some quite weird issues I am not familiar with (wasn't using Blender for a month)

Mon, Sep 16, 12:24 PM · Video Sequencer
Nathan Lovato (gdquest) added a comment to D5166: Sequencer: Add operators to add and remove fades.

Here is the patch to fix the issue: https://developer.blender.org/D5807

Mon, Sep 16, 10:17 AM · BF Blender, Video Sequencer
Nathan Lovato (gdquest) updated the summary of D5807: Remove the use of eval in Fades operators, re-enable fades.
Mon, Sep 16, 10:13 AM · Video Sequencer
Peter Fog (tintwotin) renamed T69929: Video Editor: When playhead catches up with prefetch cache, playback chokes. from Vide Editor: When playhead catches up with prefetch cache, playback chokes. to Video Editor: When playhead catches up with prefetch cache, playback chokes..
Mon, Sep 16, 9:33 AM · Video Sequencer, BF Blender
Peter Fog (tintwotin) added a project to T69929: Video Editor: When playhead catches up with prefetch cache, playback chokes.: Video Sequencer.
Mon, Sep 16, 9:32 AM · Video Sequencer, BF Blender
Peter Fog (tintwotin) updated the task description for T69927: Video Editor: Opening several Sequencer area instances will cause bad playback rate.
Mon, Sep 16, 9:16 AM · Video Sequencer, BF Blender
Peter Fog (tintwotin) added a project to T69927: Video Editor: Opening several Sequencer area instances will cause bad playback rate: Video Sequencer.
Mon, Sep 16, 9:11 AM · Video Sequencer, BF Blender
Peter Fog (tintwotin) updated the task description for T69924: Video Editor: Prefetch stops when moving playhead and makes Blender hang on new file..
Mon, Sep 16, 8:50 AM · Video Sequencer, BF Blender
Peter Fog (tintwotin) added a project to T69924: Video Editor: Prefetch stops when moving playhead and makes Blender hang on new file.: Video Sequencer.
Mon, Sep 16, 8:48 AM · Video Sequencer, BF Blender
Richard Antalik (ISS) updated subscribers of T68091: Adding a corrupt video crashes Blender.

I will have to ask @Sergey Sharybin (sergey) if he will be able to look into this.
Unfortunately I don't have enouh RAM(4gig) to debug this.

Mon, Sep 16, 5:17 AM · Images & Movies, Video Sequencer, BF Blender
Richard Antalik (ISS) added a comment to T68729: sound strip from wav-file changes length when frame rate changes.

Is this report really for version v2.76b?
That version is almost 4years old. We are not able to make fix for such old release. Please consider upgrading.

Mon, Sep 16, 4:49 AM · Audio, Video Sequencer, BF Blender
Richard Antalik (ISS) edited projects for T65432: VSE: Disk cache, added: BF Blender (2.82); removed BF Blender (2.81).

Sorry :(

Mon, Sep 16, 3:59 AM · BF Blender (2.82), Video Sequencer
Richard Antalik (ISS) added a comment to T69631: Pitch change does not update waveform or length.

Unfortunately we are unable to solve this issue immediately.
Since this will require redesign of quite lot of sequencer code, I would see this in 2.82 if I was optimistic.

Mon, Sep 16, 3:57 AM · Video Sequencer, BF Blender
Richard Antalik (ISS) triaged T69658: VSE: Preview in Video Sequencer window sometimes displays wrong frame as Needs Information from User priority.
Mon, Sep 16, 3:53 AM · Video Sequencer, BF Blender
Richard Antalik (ISS) added a comment to T69658: VSE: Preview in Video Sequencer window sometimes displays wrong frame.

Hi Please email me link to video file at richardantalik at gogle mail
(I guess AI would get this trick anyway...)

Mon, Sep 16, 3:52 AM · Video Sequencer, BF Blender
Richard Antalik (ISS) updated subscribers of T69719: VSE: Extra frame on audio strip due to frame calculation error (Proposed Solution).

This bug is so common that even the official videos put out by Blender foundation (Example, Tears of Steal) will add an extra frame to the audio strip if you import the video into the sequencer.

Mon, Sep 16, 3:36 AM · Video Sequencer, BF Blender
Justin (Blender_Frenzy) added a comment to T69564: Waveforms in vse vanish when a strip has a volume fcurve with no animation points..

@Richard Antalik (ISS) Thank you!

Mon, Sep 16, 2:52 AM · Video Sequencer, BF Blender
Richard Antalik (ISS) triaged T69352: Audio strips playback does not update when changing sequence.frame_start as Confirmed, High priority.
Mon, Sep 16, 2:49 AM · Video Sequencer
Richard Antalik (ISS) added a project to D5718: Fix for T69352: Video Sequencer.
Mon, Sep 16, 2:44 AM · Video Sequencer
Mikeycal Meyers (mikeycal) added a comment to T69684: Sound Strip Audio "Pan" defaults are misleading .

I wonder if it would be possible to show which speaker the pan is directed towards, by putting a Letter, representing the speaker, next to the number?

Mon, Sep 16, 2:17 AM · Audio, Video Sequencer, BF Blender
Richard Antalik (ISS) added a revision to T69684: Sound Strip Audio "Pan" defaults are misleading : D5806: Fix T69684: Sound Strip "Pan" function is misleading.
Mon, Sep 16, 2:06 AM · Audio, Video Sequencer, BF Blender
Richard Antalik (ISS) added a comment to D5166: Sequencer: Add operators to add and remove fades.

Another thing I haven't noticed is that there are some warnings caused by this patch:

Mon, Sep 16, 1:58 AM · BF Blender, Video Sequencer