Recherche avancée

Sur d’autres sites (6768)

• Trying to concat videos from different sources with ffmpeg and get different broken results every time (partly no audio and/or fast forward video)

  30 octobre 2022, par Oliver

  I am using ffmpeg for years to create (merge and render) big video files from the (vaction) clips my sony camcorder produces. My basic workflow is to copy the mp4 files from the camcorder over to my pc, put the names in a file (file 'filename') and use the following command to create one big file that is playable by my apple tv :

  


  ffmpeg -f concat -safe 0 -i filelist.txt -c:v libx265 -preset slow -x265-params strong-intra-smoothing=0:merange=58 -crf 24 -c:a aac -b:a 320k -tag:v hvc1 output.mp4


  


  i cannot explain most of the arguments in total detail but i know that it works.
My problem occurred as i wanted to prepend some video clips recorded with an iphone to one of those files. So the first part seemed easy, the sony camcorder files have a resolution of 3840x2160 and the iphone video clips have a resolution of 1280x720 so at first i upscaled the iphone files using this command (i would have rather done in just one step but i do not know how to do that) :

  


  ffmpeg -i IMG_1182.MP4 -vf scale=3840:2160 IMG_1182_3840x2160.MP4


  


  then i just tried to add those upscaled video files to the filelist from the first command and ran the command for all clips again. Sadly that did not worked, as the resulting file contained all clips but only the iphone part had audio ! For the rest of the video the audio was missing. At this point i also did not noticed that the second part was played much faster (like played in fast forward mode). So guessed that i have to render the iphone and sony camcorder clips separately using the first command. That worked and i got two video files with perfect audio and video. My next step was to concatenate the resulting files using the following simple command :

  


  ffmpeg -f concat -safe 0 -i concatlist.txt -c copy output.mp4


  


  where concatlist contained both files.
Sadly that also did not worked. I do got a file containing both parts, this time with audio, but the video of the second part still was fast forward !

  


  I do not know what to do at this point, and i also do not understand enough to experiment with the options any more. Can someone explain to my what could be the problems here and how to solve them ?

  


• Localization : Add Hindi translation (#2453)

  11 novembre 2022, par saurabhsharma2u

   Localization : Add Hindi translation (#2453)
  * Localisation : Update Hindi (India) translation
  * Hindi Translation for Step Method
  * HIndi-India Local messages for additional method
  * file rename as per  ISO 639-1 format
  * removed duplicate message, causing the test fail
  * removed duplicate "cifES" error message
  

• Revision 2ce4783982 : configure : arm : Check __ARM_PCS_VFP if the float ABI hasn't been defined The su

  1er mai 2013, par Martin Storsjo

  Changed Paths :
   Modify /build/make/configure.sh

  
  
  configure : arm : Check __ARM_PCS_VFP if the float ABI hasn't been defined

  The support for detecting hardfp toolchains in af9dd50e is a
  step in the right direction, but that particular switch case
  isn't executed at all if the toolchain variable is set.

  This fixes cross building from x86 ubuntu to armhf ubuntu,
  in configurations such as
  "CROSS=arm-linux-gnueabihf- ./configure —target=armv7-linux-gcc".

  Change-Id : I6f141361e40374fbab564f9196d90e598fe9a0f6