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• Trying to download Fragmented MP4 video [closed]

  26 janvier 2021, par Aryan Agarwal

  i want to download a course that I have purchased for my personal use because my access will be removed by 28th Jan.

  


  I was trying to download the video from the dev tools network tab and encountered that the video is fragmented in multiple MP4 files and not TS or M4s.

  


  The most peculiar thing is that it is the exact same link for the download but I am not able to download the video.

  


  This is the network tab feed

  


  This is the link if somebody wants to check it out https://d1z78r8i505acl.cloudfront.net/media/Ubr3VhTyJD5NW/7c71af39/video_1630_1080_1372.mp4

  


• Auto-Transcode/Compress .mkv to .mp4 on Qnap TS-251+

  9 novembre 2020, par DarkDiamond

  I rip my DVDs with MakeMKV in order to be able to watch them on my TV, as I do not have a DVD-player that supports any output connector that fit into my TV as the TV is relatively new whereas the DVD-player is quite old. (As I only use the rips for my personal entertainment and do not share them there is absolutely no copyright problem).

  


  The problem with the output files is the extreme size as they are the raw data from the disk. Now I would like these files to be compressed into a .mp4 file as soon as they are finished. The problem is that the file is created before everything is in it, so I probably need to write it into a local drive and copy it to its destination later. Then I will copy them to my Qnap NAS TS-251+.

  


  There I want it do be compressed into a much smaller .mp4 file (usually the .mp4s are a sixth of the original size). I found something using ffmpeg, so I just need a script that does this for me. I do not mind to use a Docker machine for it, but I do not know how to do it. I found this :

  


  ffmpeg -i input.mkv -c:v -crf 18 -preset veryslow -c:a copy out.mp4 here.

  


  I also found this video, so I know it is in theory possible, I just do not know how to realise it.

  


  In case you ask why I want to use the Qnap NAS, it allows hardware acceleration, whereas my laptop does not.

  


• Building FFmpeg for use in Swift

  7 juillet 2021, par NCrusher

  With the new XCode/Swift release comes the ability to use binary dependencies. This seems to me to be an ideal time to create an SPM package for FFMpeg.

  


  However, while I've spent the last year learning to code i Swift, I'm actually not all that familiar with how to build libraries, especially those as complex as FFmpeg with all the configurable libraries and third-party dependencies.

  


  There's kewlbear's iOS build scripts, but these are for iOS/tvOS and ideally an FFMpeg SPM package would be usable for MacOS also. It's also not updated for the newest Xcode and Swift versions.

  


  My personal interest is simply in audio and I don't need a lot of bells and whistles, but I figure the ideal situation would be a full package with the entire source and whatever dependencies it needs, and then when it's used as a package dependency, the compiler will just use the parts it needs.

  


  I guess my question is...how would I ideally compile the ffmpeg code for this purpose. I'm trying to follow the directions for compiling yourself, but I'm stuck at the point of compiling gettext because I'm not sure if I should follow the directions (in the gettext source code) for compiling a fat binary for multiple architectures, and when I try to run :

  


        ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
                  CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
                  CPP="gcc -E" CXXCPP="g++ -E"



  


  I get the following error :

  


   checking whether the C compiler works... no configure: error: in
 `/Users/nolainecrusher/Downloads/FFMpeg-source/gettext-0.21/gettext-runtime':
 configure: error: C compiler cannot create executables See
 `config.log' for more details configure: error: ./configure failed for
 gettext-runtime


  


  and config.log doesn't really tell me anything useful :

  


  This is what I see at the end of the log :

  


   mkdir_p='$(MKDIR_P)' oldincludedir='/usr/include' pdfdir='${docdir}'
 prefix='/usr/local' program_transform_name='s,x,x,' psdir='${docdir}'
 sbindir='${exec_prefix}/sbin' sharedstatedir='${prefix}/com' subdirs='
 gettext-runtime libtextstyle gettext-tools' sysconfdir='${prefix}/etc'
 target_alias=''


  


  I feel like maybe I'm going about this the wrong way, but I'm not sure what the right way is.