[Libav-user] Clarification on Libavcodec

2012-06-06 Thread Krishna
Hi, I need small clarification on Libavcodec library behaviour I am developing IOS live video streaming application fow which Live555 I am using to receive H264 frames from Server(Camera). I am using Libavcodec to decode H264 frames to YUV & libwscale to YUV to RGB conversion. Our goal is to ac

Re: [Libav-user] http streaming latency depends on frame rate

2012-06-06 Thread Aleksey Shubin
2012/6/6 Geek.Song : > do you tune rc_lookahead to zero? Do you mean x264's rc_lookahead? Tried it, but latency was the same. Anyway that seems not to be encoder problem (as frame encoding time doesn't change a lot when changing frame rate). ___ Libav-us

Re: [Libav-user] Ask about license for using ffmpeg library in binary

2012-06-06 Thread Carl Eugen Hoyos
Khanh Nguyen Nam writes: > I am developing an application which uses ffmpeg library as below: > > Add ffmpeg binary to application source code > Call ffmpeg command line via C# code. If you want to distribute a software binary that is FFmpeg (or a derivative work of FFmpeg) and you are not

[Libav-user] Ask about license for using ffmpeg library in binary

2012-06-06 Thread Khanh Nguyen Nam
Dear all, I am developing an application which uses ffmpeg library as below: * Add ffmpeg binary to application source code * Call ffmpeg command line via C# code. I want to sell my application. Do I have to pay for using ffmpeg? And if I have to pay, who will I have to contact? Sorry i

Re: [Libav-user] Coversion from YUV to RGB loss of image details

2012-06-06 Thread Sampath Subasinghe
$ ffmpeg -i out.ppm -pix_fmt yuv420p -strict experimental out.ljpg $ ffmpeg -i out.ljpg ref2.ppm I'm also seeing the black edge with above commands. (Except, I had to precede the second command with -pix_fmt yuv420p to avoid seg faulting ffmpeg). This sounds like an important issue that I c

Re: [Libav-user] ffmpeg to publish to streaming server (Wowza)

2012-06-06 Thread NITIN GOYAL
i think theoretically its possible but it might be bit complex.. the following link might help you: http://libav-users.943685.n4.nabble.com/Output-mpeg-ts-to-rtp-td2234066.html Regards Nitin On Wed, Jun 6, 2012 at 8:45 PM, Brad O'Hearne wrote: > Any ideas on publishing / sending MPEG-TS over

Re: [Libav-user] ffmpeg to publish to streaming server (Wowza)

2012-06-06 Thread Brad O'Hearne
Any ideas on publishing / sending MPEG-TS over RTP using ffmpeg? a) Can this be done? b) Any ideas on where to start? Thanks, Brad Brad O'Hearne Founder / Lead Developer Big Hill Software LLC http://www.bighillsoftware.com On Jun 4, 2012, at 3:36 PM, Brad O'Hearne wrote: > Hello, > > M

Re: [Libav-user] Reoder Buffer Configuration

2012-06-06 Thread Alex Cohn
On Wed, Jun 6, 2012 at 11:29 PM, Krishna wrote: > That means Delay will be there?? which is not at all acceptable. Any way > is there to avoid this? > One more thing is transmitter (Camera) sending only i-frames. not > B-frames. Then how this print is comming? > You could run ffmpeg with "-debug

Re: [Libav-user] Coversion from YUV to RGB loss of image details

2012-06-06 Thread Alex Cohn
On Wed, Jun 6, 2012 at 2:10 PM, Sampath Subasinghe wrote: > > > > > > I am not using the latest build, but for me the round-trip worked without > > artifacts, see attached images and console output: > > > > Hi Alex, Does this mean you don't get this edge issue. If so, please > let me know how to f

Re: [Libav-user] Coversion from YUV to RGB loss of image details

2012-06-06 Thread Sampath Subasinghe
> > > I am not using the latest build, but for me the round-trip worked without > artifacts, see attached images and console output: > Hi Alex, Does this mean you don't get this edge issue. If so, please let me know how to fix this in my code? thanks. -- ~Sampath~

Re: [Libav-user] Coversion from YUV to RGB loss of image details

2012-06-06 Thread Carl Eugen Hoyos
Alex Cohn writes: > > This is broken (because odd width is not supported by > > yuv rawvideo): > > ffmpeg -i ref.ppm ref.yuv > > ffmpeg -s 45x32 -i ref.yuv ref2.ppm > I am not using the latest build, but for me the > round-trip worked without artifacts I forgot to add -pix_fmt yuv420p to the f

Re: [Libav-user] Coversion from YUV to RGB loss of image details

2012-06-06 Thread Carl Eugen Hoyos
Sampath Subasinghe writes: > > $ ffmpeg -i out.ppm -pix_fmt yuv420p -strict experimental out.ljpg > > $ ffmpeg -i out.ljpg ref2.ppm > I'm also seeing the black edge with above commands. > (Except, I had to precede the second command with > -pix_fmt yuv420p to avoid seg faulting ffmpeg). Thi

Re: [Libav-user] Coversion from YUV to RGB loss of image details

2012-06-06 Thread Sampath Subasinghe
> > The following does work and produces the same black edge: > $ ffmpeg -i out.ppm -pix_fmt yuv420p -strict experimental out.ljpg > $ ffmpeg -i out.ljpg ref2.ppm > > Carl Eugen I'm also seeing the black edge with above commands. (Except, I had to precede the second command with -pix_fmt yuv420p t

Re: [Libav-user] Reoder Buffer Configuration

2012-06-06 Thread Krishna
That means Delay will be there?? which is not at all acceptable. Any way is there to avoid this? One more thing is transmitter (Camera) sending only i-frames. not B-frames. Then how this print is comming? Regards, KP - Original Message - From: "Carl Eugen Hoyos" To: Sent: Wednesday,

Re: [Libav-user] Reoder Buffer Configuration

2012-06-06 Thread Carl Eugen Hoyos
Krishna writes: > What is my observation is after i got following debug print > "Increasing reorder buffer to 16" > Propation delay is more in my video streaming application. Definitely! (Although I don't know much about the reorder buffer.) Please do not top-post here, Carl Eugen

Re: [Libav-user] http streaming latency depends on frame rate

2012-06-06 Thread Geek.Song
do you tune rc_lookahead to zero? On Wed, Jun 6, 2012 at 2:57 PM, Aleksey Shubin wrote: > Good day to all. > > I'm using libav in my application to encode live video to h264, mux it > in Live Smooth Streaming format and send to IIS Live Smooth Streaming > publishing point (via http). > > I need t

Re: [Libav-user] Reoder Buffer Configuration

2012-06-06 Thread Krishna
Hi Carl, What is my observation is after i got following debug print "Increasing reorder buffer to 16" Propation delay is more in my video streaming application. Regards, KP - Original Message - From: To: "This list is about using libavcodec, libavformat, libavutil,libavdevice and lib