Newest 'ffmpeg' Questions - Stack Overflow

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• Android, How to use Media Recorder to record from my own image source ?

  5 mars 2012, par John Nabil

  I want to use android media recorder to record video from list of images ? Is that possible?

  I saw many samples to use it but to record from the device camera.

  Best regards John Nabil

• FFMPEG, how to put h263 in mp4 contain format ? [closed]

  4 mars 2012, par John Nabil

  I managed to encode group of images in h263 codec using ffmpeg, but my problem now , i want to put the result into mp4 container

  Thanks in advance.

• Compiling ffmpeg with x264 for iOS 5 and iOS 5 simulator

  3 mars 2012, par alby

  I'm using Xcode 4.3.

  I have already collapsed, and I do this two days。

• How to speed ffmpeg-x264 encoder operation

  3 mars 2012, par newentry

  i have ported ffmpeg-x264 for android but the issue is encoder takes more time to encode a frame .It takes above 100ms to encode and cpu rises to 85% in some devices like LG and samsung.i am using the following avcodeccontext settings

  c->bit_rate = 256000;
  c->width = width;
  c->height = height;
  c->gop_size = 2;//75;
  c->pix_fmt = PIX_FMT_YUV420P;
  c->codec_type=AVMEDIA_TYPE_VIDEO;
  c->codec_id=CODEC_ID_H264;
  c->cqp=36;
  

  is there any other settings that makes the ffmpeg-encoding faster and utilizing less cpu percentage

• Web Based Playback of iOS Videos with Orientation Flag

  3 mars 2012, par shanee

  We just recently created an iPhone app for one of our system that allows users to upload picture and video content to our services. The last major hitch we are running into is how to handle videos that are uploaded in an orientation other than Horizontal Right. Apparently if your playback system does not account for the orientation flag sent with the video then it will play upside down or sideways.

  The correct approach appears to be that the playback system should take the orientation flag into account just prior to playback. This is the way Apple handles it directly on the device as well as through Quicktime.

  SO my first hope is that someone is aware of a web based (HTML5 or Flash) player that is capable of rotating a video during playback based on either the video orientation metadata or based on a passed flag (we already have the necessary flag available in the DB if we need to just pass it manually). If you know of any such player then PLEASE SHARE!

  If you aren't aware of such a player, then has anyone had any luck rotating their videos using FFMPEG or MEncoder? We did a few hours of testing last week and weren't able to get any decent results from the two heavy hitters mentioned there.

  Failing ALL OF THAT, is it possible to have the iPhone upload a video or image in a specified direction?

  Any of the three will work for me, but I would prefer to do whatever is standard (if one exists).

  Any help is much appreciated!