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Here is the situation
I loaded several video files, edited the strips, did some cuttings, and made a sequence that I'd like to get rendered, added some audio files, did same kind of work on them.

But here is the thing, after I render this sequence, in the resulting file I get portions of video fragments that I cutted out while editing, And I don't see them in video view in blender.

What can be the reason for that?

blend file

enter image description here

Ali Rustam
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  • You need to mute the original strips – Denis Aug 25 '15 at 21:11
  • could you upload a screenshot from your VSE? – gladys Aug 25 '15 at 21:26
  • What format is the original video in? –  Aug 25 '15 at 21:37
  • @cegaton it's avi file – Ali Rustam Aug 25 '15 at 21:38
  • What Codec? how was it generated? Also check that the framerate of your project matches that of your video? –  Aug 25 '15 at 21:41
  • and btw all the audio strips were on 1 channel, then I made a meta strip from all (audio+video) strips, after pressed Alt+G, and the audio strips appeared on different channels. I don't know why – Ali Rustam Aug 25 '15 at 21:41
  • @cegaton, why should the frame rates match? I want to make a video a bit faster – Ali Rustam Aug 25 '15 at 21:42
  • Detected file format: AVI (Audio Video Interleaved) (libavformat) [lavf] stream 0: video (mpeg4), -vid 0 VIDEO: 1920x1072 15.000 fps 0.0 kbps ( 0.0 kB/s) VO: [xv] 1920x1072 => 1920x1072 Planar YV12 – Ali Rustam Aug 25 '15 at 21:46
  • I made this file by converting with ffmpeg from ogv, which was made by recordmydesktop programm – Ali Rustam Aug 25 '15 at 21:47
  • I believe the issue you are experincing is because of thoe mismatching framerates. There are tools within the VSE to alter the speed of video. –  Aug 25 '15 at 21:49
  • @cegaton, actually the frame rate of the file matches that of the project, I did not set it faster, just wanted to do that. Sorry for confusion – Ali Rustam Aug 25 '15 at 21:50
  • @Denis I don't see any strips other than those I want to render, if I mute them, I don't have any video at all – Ali Rustam Aug 25 '15 at 22:04
  • could you upload the blendfile or is it to big? – gladys Aug 25 '15 at 22:10
  • Could you isolate one little piece of the file where the problem occour and send it with a portion of the file with video? Or make a video of you showing the issue? The structure of your file seems ok, so the input video should to be somehow involved. Does it has the same behaviour with other files too? – Carlo Aug 25 '15 at 23:54
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    Sometimes Blender has issues decoding the input video (FFMPEG issue) and thus your edits and cuts might be cut to the wrong time. Using Proxy should help. – Mike Pan Aug 26 '15 at 06:23
  • @MikePan, I enabled a proxy for this strip, rebuilt it, ran th rendering again,

    No changes, strip rendered resulting in video different from what is in VSE

     – Ali Rustam Aug 26 '15 at 08:33
  • @Carlo it was a single file, I just montaged it a bit – Ali Rustam Aug 26 '15 at 08:36
  • @alirustam, you didn't pack the videos in the blendfile. To do this go to file --> external data --> pack all into.blend – gladys Aug 26 '15 at 17:00
  • @alirustam , once you build the proxy, does the preview look correct? If not, you need to recut the video using the proxy as guide. But ultimately, this is likely a bug with FFMPEG. – Mike Pan Aug 26 '15 at 23:41
  • I noticed your blender is 4 version old. Your screen cap says 2.71 and I have 2.75. Try updating it first. – cybernard Aug 27 '15 at 02:35
  • @cybernard, I tried it allready with newest version, didn't help – Ali Rustam Aug 27 '15 at 06:07
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    You cannot pack video into a .blend file. Sorry. It also looks like you are editing a screen cap, these videos are notoriously incompatible with current versions of Blender. Best suggestion is to transcode your source file into something less compressed first, then edit that. – 3pointedit Aug 27 '15 at 06:09
  • Comments are not for extended discussion; this conversation has been moved to chat. – iKlsR Aug 27 '15 at 06:14
  • http://blender.stackexchange.com/a/41720/2843 – Samoth Nov 17 '15 at 23:37
  • Try using: http://blender.stackexchange.com/a/49219/2843 - does it help? – Samoth Apr 05 '16 at 15:03

1 Answers1

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That's most likely a problem due to a broken Video file. The internally used ffmpeg libraries don't work too well with some video formats and are not able to always provide the frames without artifacts and in the right order one by one. I bet your Screencast software didn't do a good job in encoding your footage.

So try to repair your footage. And then instead of using RecordMyDesktop to capture your screen you should use Open Broadcaster Software recording to file, not LiveStream. It should provide you with non-problematic footage that you can use with Blender without problems.

Samoth
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