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• how to convert mp4 using ffmpeg for ios [on hold]

  23 août 2015, par Khaled Hayek

  I have problem to use ffmpeg for windows to convert mp4 file so that it can be played on iphone

      ffmpeg -i input.mkv -c:v libx264 -crf 28 -preset veryslow -tune fastdecode \
  
    -profile:v baseline -level 3.0 -movflags +faststart -c:a libfdk_aac -ac 2 \
  
    -ar 44100 -ab 64k -threads 0 -f mp4 output.mp4

  but still not working, any help please

• How to implement HTTP Live Streaming server on Unix ?

  11 juillet 2019, par alex

  I just realized that Apple required HTTP Live Streaming in order to view videos in iPhone apps. I was not aware of this before... I am now trying to understand what this involves so I can decide whether I want to do the work and make the videos available in 3G or limit video playing to users who are connected to wi-fi.

  I read the overview provided by Apple, and now understand that my server needs to segment and index my media files. I also understand that I don’t have to host the content to be able to stream it (I can point to a video hosted somewhere else, right ?).

  What’s not clear to me at this point is what to implement on my server (Ubuntu Hardy) to do the actual segmenting and indexing on the fly (once again, I do not host the videos I want to serve).

  I found a link explaining how to install FFmpeg and X264, but I don’t know if this is the best solution (since I have an Ubuntu server, I can’t use the Apple Live Streaming tools, is it correct ?). Also, I do not understand at which point my server knows that a video needs to be converted and starts the job...

  Any feedback that could help me understand exactly what to do on the server side to be able to stream videos on my iPhone app in 3G would be greatly appreciated ! (Oh, and just it makes any difference, my app back-end is in Rails)

• ffmpeg error - unknow error from vkcache m3u8

  18 juillet 2017, par Robert Smith

  Trying to download this stream to mp4 :

  http://f4h4he.vkcache.com/secip/0/Phhz9wn3_IawaUZtvvlVOw/NjguMjQxLjg3LjE1OQ==/1500346800/hls-vod-s1/flv/api/files/videos/2016/03/15/1458006491172bd.mp4.m3u8

  I am using the following command :

  ffmpeg -user-agent "Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us)" -i "http://f4h4he.vkcache.com/secip/0/Phhz9wn3_IawaUZtvvlVOw/NjguMjQxLjg3LjE1OQ==/1500346800/hls-vod-s1/flv/api/files/videos/2016/03/15/1458006491172bd.mp4.m3u8" -vcodec copy -acodec copy -bsf:a aac_adtstoasc output.mp4

  But am getting error from ffmpeg : "Unknown error"

  My question is what am I doing wrong or missing in the command ? Thanks.

  Here is an additional source of help I was using but did not help :

  https://forum.videohelp.com/threads/370243-download-video-from-hqq-tv

  Update #1

  I was able to retrieve the actual file :
  1458006491172bd.mp4.m3u8

  Here is the file :
  http://txt.do/dkyui