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• ffmpeg mp4 shows blurred frames after seeking in the video with internet explorer

  21 février 2014, par Larzzz

  I have a question regarding JWPlayer 5, IE and video encoding.
  Basicly I use a Wowza server to stream my files. This works on all devices (windows, iOS and Android).
  However when i play it in Internet Explorer, it behaves strange.
  It plays fine, and the entire movie looks good without any issues. But when I seek in the video, it shows a line in the center of my video, like if the previous frame is still showing some part, and it refreshes after a few frames move in the video.
  The frames itself are not broken, as if i just play the video without seeking it all looks good.
  This does not happen in Chrome, Firefox or Safari, neither does this happen on android & iOS.
  I've tested this with JW 6 as well, and it shows the same results for IE.

  Altough it's showing fine on other browsers, I still believe it's an issue with encoding, as other videos do not show this behavior.

  Example viewable here : http://www.mobileevolution.be/standardcode-withsmil.html

  The FFMPEG code i use to convert any file (.avi in this case) to an MP4 :

  "ffmpeg.exe" -i "%1" -vcodec libx264 -strict experimental -c:a aac -profile:v baseline -level 3 -movflags faststart -bufsize 1000k -tune zerolatency -b:v 1000k -minrate 600k -maxrate 1500k "%5%71000k.mp4"

  the %1, %5 and %7 are variables i send with a script.

  I have tried various options, but could not figure out what the problem is.
  I have also tried converting with handbrake, but this shows similar results.

  My questions are :
  Has anyone seen this before ?
  Does anyone know a solution ?
  What's wrong with my FFMPEG settings ?

  Thanks for any help,
  Grts

  EDIT
  pictures :
  http://www.mobileevolution.be/foto1.jpg
  http://www.mobileevolution.be/foto2.jpg
  console output :
  http://www.mobileevolution.be/consoleoutput.txt

• Blu Ray pre-encoding

  29 mai 2014, par user1122069

  I am working on authoring many Blu Ray disc images. I was wondering if there was a way to pre-encode video to MPEG-2 so that this process could run unattended overnight and over many days. I have already found that by importing the movie file on a Blu Ray image causes Toast to skip the encoding step.

  Does anyone familiar with FFMPEG and Blu Ray know what command to use ? Or suggest another free application. It should be the same as would be ready to import to a disc with remuxixing or multiplexing, etc. I can fine tune it to match the VBR settings on Toast and post the result here also if it works (saves the time to encode).

  I have about 50 1 hour videos to encode.

• FFMPEG subtitle always delay 1 frame

  12 février 2014, par lostincomputer2

  I encounter problems encoding video that I ripped from DVD, after ripping the video size is around 300MB and it plays well and subtitle sync well, then I want a smaller size for tablet and encode it using ffmpeg and the result is around 100MB but the subtitle will always late for 1 frame

  # ffmpeg -i "Original.mkv" -level 5.1 -preset veryslow -tune animation -keyint_min 12 -sc_threshold 45 -bf 8 -b_strategy 2 -refs 16 -qmin 10 -qmax 51 -qcomp 0.6 -direct-pred auto -me_range 24 -me_method umh -subq 10 -trellis 2 -an -sn -vcodec libx264 -crf 28.0 output1.mkv
  
  # ffmpeg -i "Original.mkv" -f wav -| neroAacEnc -ignorelength -lc -q 0.4 -if - -of output2.aac
  
  # mkvmerge -o outputFF.mkv --language "0:jpn" --track-name "0:SmallAnime Encode @ CRF 28.0" output1.mkv --no-chapters --language "0:jpn" --track-name "0:2.0 AAC-LC @ 0.4" output2.aac -A -D --language "2:eng" --track-name "2:Styled Subtitle (.ass)" "Original.mkv"

  In aegis sub, the video looks well which the subtitle appear normally, however when played using MPC, the subtitle always late 1 frame

  Aegis show correctly screenshot : http://puu.sh/6N2gy

  Play using MPC problems : http://puu.sh/6N38E.jpg

  Anyone know why this happens ? The ffmpeg uses libx264 video codec and it is configured using bit depth=10. The OS I am using is CentOS 6.4