Re: [FFmpeg-user] H264 IP-camera dump causes wrong duration/bitrate

2015-05-20 Thread しらせ けんじ
Is it possible that your camera actually captures at a lower framerate at night/in low light condition? I think framerate is fixed rate. The probrem is in frame detection. Talking about the sample, the bitrate at night has bigger than day time one. I think the frame in night doesn't need more

Re: [FFmpeg-user] H264 IP-camera dump causes wrong duration/bitrate

2015-05-19 Thread Kal Sze
On Wed, 20 May 2015 at 08:56 しらせ けんじ wrote: > I tried to encode to mpeg / mp4 before, and the result was same. > So, I think the problem is input data or decoder , not encorder! > > Are there any idea to investigate this problem? > > Is it possible that your camera actually captures at a lower fr

Re: [FFmpeg-user] H264 IP-camera dump causes wrong duration/bitrate

2015-05-19 Thread しらせ けんじ
I tried to encode to mpeg / mp4 before, and the result was same. So, I think the problem is input data or decoder , not encorder! Are there any idea to investigate this problem? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mail

Re: [FFmpeg-user] H264 IP-camera dump causes wrong duration/bitrate

2015-05-18 Thread Carl Eugen Hoyos
しらせ けんじ shirase.tk> writes: > I got H264 livestream dump from my IP-camera with ffmpeg. > The movies get shorter than real time in night time, > although the length is correct in day time. Is the issue also reproducible if you encode instead of remuxing? $ ffmpeg -vcodec mpeg4 -qscale 2 .

[FFmpeg-user] H264 IP-camera dump causes wrong duration/bitrate

2015-05-18 Thread しらせ けんじ
I got H264 livestream dump from my IP-camera with ffmpeg. The movies get shorter than real time in night time, although the length is correct in day time. The command line I did is below. I used segment function with segment time = 60. So, I expect the duration of each mp4 file is about 60 seco