Recherche avancée

Sur d’autres sites (5987)

• FFmpeg enable videotoolbox on iOS

  27 février 2016, par bigbangvn

  I build FFmpeg for iOS and have enabled VideoToolbox, but when decoding video use function avcodec_decode_video2, it doesn’t use VideoToolbox and very slow on iPhone.
  I use the example demuxing_decoding here : https://ffmpeg.org/doxygen/trunk/demuxing_decoding_8c-example.html
  and have try to setup VideoToolbox decoding without success.

  Have anyone encountered that problem ?

• No such file or directory FFMpeg Error on MAC

  20 novembre 2014, par Nitesh

  I am trying to build a ffmpeg binary using the following link

  http://ffmpegmac.net/HowTo/

  I was successful in creating the binary.
  I could convert video files easily
  This is the code i run in the terminal

  ffmpeg -i Test.mp4 -b:v 64k -bufsize 64k test2.flv

  This works fine totally
  But when i run

  ./ffmpeg -re -i  test2.flv  -acodec libfaac -ar 44100 -ab 96k -c: v libx264  -level 41 -      profile baseline -bufsize 20000k -maxrate 25000k -g 250 -r 20 -s 480x270 -flags  -global_header -map 0 -f segment -segment_time 4 -segment_list test.m3u8 -segment_format mpegts stream%05d.ts 

  I get a "test2.flv : No such file or directory error" even though the test2.flv exists in the folder. Can you tell me where i might be going wrong.
  I am doing the above operation to stream the video to my iPhone over air.

  (Note- The command to build the ffmpeg binary i am using is as follows-
  ./configure —prefix=$TARGET —enable-nonfree —enable-gpl —enable-pthreads —enable-version3 —enable-libspeex —enable-libvpx —disable-decoder=libvpx —enable-libfaac —enable-libmp3lame —enable-libtheora —enable-libvorbis —enable-libx264 —enable-avfilter —enable-libopencore_amrwb —enable-libopencore_amrnb —enable-filters —arch=x86_64 —enable-runtime-cpudetect && make -j 4 && make install
  )

  Thanks in advance for your help
  Regards

• RTSP/RTMP Video Streaming Client iOS [closed]

  28 mai 2015, par nathansizemore

  I’m in need of a open source solution/library to stream RTSP/RTMP to an iOS Application. I need to build an app that connects to a media server, and opens the provided video stream. I believe there has to be libraries out there, but I have yet to find one that is open source, compiles, actually works, and runs on iOS 5+, iPhone 4+. I do not have a preference, RTMP or RTSP will suffice. Preferably the one with the least amount of work. I have RTSP working on the Android side, but nothing for iOS yet.

  This is what I already know from research today -

  RTSP

  • Seems possible using Live555/FFMPEG
  • MooncatVenture Group - Old FFMPEG, not compatible with ARMv7s (No updates/blogs/commits in over a year)
  • DFURTSPPlayer - This is a working example.

  RTMP

  • Seems possible using Live555/FFMPEG
  • A few libraries are out there for data messaging, but that is all
  • MidnightCoders Project - Does not seem video support is build yet, as Audio is not.

  I’ve never messed with anything video related before, so encoding, frame rate, key frame, chunks, etc... is pretty foreign to me. Right now, it seems building a static binary from Live555/FFMPEG is the only solution to my problem. If so, can anyone give me a simple quickstart guide or links to a blog/example someone has out there ? I’m not looking for anything crazy, just a simple

  1. Download This - LINK
  2. Compile it like this - LINK
  3. Place it into X Folder in Xcode
  4. Create X Object
  5. Read Stream API here - LINK

  If not, anyone want to point me to a working open source library ?

  Oh yeah, this happens to be my first iPhone app and first time in Objective-C. Awesome first project, yeah ?