You may also follow this simple guide to crop video with or without change the video aspect ratio at at http://www.idealshare.net/video- converter/video-cropper.html
-- You received this bug notification because you are a member of OpenShot Bugs, which is subscribed to OpenShot Video Editor. https://bugs.launchpad.net/bugs/1264653 Title: Photo to Full HD video crop and scale width rounding error Status in OpenShot Video Editor: New Bug description: Architecture (64 bits or 32 bits) : 32 bits Operating System & version: Ubuntu 13.10 "saucy" Installation Method : via Ubuntu Software Center Version of Openshot installed : 1.4.3 BZR Revision used (if any) : None MLT/melt version: I do not know, what this mean FFmpeg (i.e.libavcodec) version : avconv version 0.8.9-6:0.8.9-0ubuntu0.13.10.1 FFmpeg installation : Not installed. This bug can be by 100% reproduced through following actions: 1) Set the project default size in the preferences to 1080p 25 fps 2) Set the default clip length in the prefernces to 7 seconds 3) Create a new project 4) Create 3 tracks 5) Import a soundfile of adequate length seconds duration to track 0 6) Import 2 black images and a photo (5184x3456 18 megapixel) into the project (track 1 and 2) incl. cross-fades 7) Edit the clip layout keyframes to zoom in or zoom out the photo in every clip 8) Export the video using the mp4 (h.264) codec at high quality 9) Play the buggy video in vlc video player in full screen mode: vlc "<FilePath>" -f On the right side of the player pixel column 1920 disappears and reappears frequently. If the still file name is displayed by vlc player you can see that the whole frame is freqently chattering by one pixel from the left to the right and back again. This chattering reduces the subjective enjoyment of the viewer by more than 66 %. From my point of view, a failure like this is not an option. So I ask you to solve this problem before you launch OpenShot V.2.0. avprobe version 0.8.9-6:0.8.9-0ubuntu0.13.10.1, Copyright (c) 2007-2013 the Libav developers built on Nov 9 2013 19:15:22 with gcc 4.8.1 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Test1.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf53.21.1 Duration: 00:00:11.72, start: 0.000000, bitrate: 7170 kb/s Stream #0.0(und): Video: h264 (High), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 6973 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc Stream #0.1(und): Audio: ac3, 44100 Hz, stereo, s16, 191 kb/s This problem is also visible while playing the timeline (preview) within OpenShot. This may be a problem within the libav library you use in the OpenShot crop and scale function. Please have a look on the crop and scale function in my own application KeyframeEditor: https://launchpad.net/keyframeeditor I detected and reproduced the the same libav problem, when cropping and scaling with avconv in KeyframeEditor. PROPOSED WORKAROUND: I worked around this problem in KeyframeEditor by using ImageMagick for cropping and scaling and to give the position and size parameters as exact float values to ImageMagick. Test script: #!/bin/bash # # Custom crop and scale method # # Interface echo "Image input path ....: $1" echo "Crop width ..........: $2" echo "Crop height .........: $3" echo "Crop x ..............: $4" echo "Crop y ..............: $5" echo "Project width .......: $6" echo "Project height ......: $7" echo "Image output path ...: $8" # # Note: This script must be capable to overwrite the output path without user interaction. # Note: This script must be capable to to overwrite the input path by the output path. # # Action # Using ImageMagick convert "$1" -crop "$2x$3+$4+$5" -resize "$6x$7" "$8" EXITCODE=$? if [ ! "$EXITCODE" == "0" ]; then echo "ERROR: convert canceled with exit code $EXITCODE." exit 1 fi echo "Complete." # Exit exit 0 Inside Keyframe editor I call "convert" only one time and order to render the whole clip in one pass. This is more efficient than to call convert at cropping every frame. See KeyframeEditor.py / object ExportVideoFrame / thread handler CropImagesFromPhoto / after elif self.sCropScaleTool == "ImageMagick". Currently I bypass this problem within OpenShot 1.4.3 by using the methods I described in Chapter III and IV of the KeyframEditor tutorial, which is available in the KeyframeEditor README file. To manage notifications about this bug go to: https://bugs.launchpad.net/openshot/+bug/1264653/+subscriptions -- Mailing list: https://launchpad.net/~openshot.bugs Post to : [email protected] Unsubscribe : https://launchpad.net/~openshot.bugs More help : https://help.launchpad.net/ListHelp
