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

2012-06-06 Thread Carl Eugen Hoyos
Sampath Subasinghe susiriss@... writes: I was wondering whether this is what you meant. 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 The following does work and produces the same black edge: $ ffmpeg -i

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

2012-06-06 Thread Alex Cohn
On Wed, Jun 6, 2012 at 9:12 AM, Carl Eugen Hoyos ceho...@ag.or.at wrote: Sampath Subasinghe susiriss@... writes: I was wondering whether this is what you meant. This is broken (because odd width is not supported by yuv rawvideo): ffmpeg -i ref.ppm ref.yuv ffmpeg -s 45x32 -i ref.yuv

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

2012-06-06 Thread Aleksey Shubin
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 to achieve quite low latency (3 seconds) of live video. When the video is recorded on regular frame

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: krishn...@iwavesystems.com To: This list is about using libavcodec, libavformat,

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 x.morio...@gmail.com 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

Re: [Libav-user] Reoder Buffer Configuration

2012-06-06 Thread Carl Eugen Hoyos
Krishna krishnaks@... 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] 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 to

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

2012-06-06 Thread Carl Eugen Hoyos
Sampath Subasinghe susiriss@... 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

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

2012-06-06 Thread Carl Eugen Hoyos
Alex Cohn alexcohn@... 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

Re: [Libav-user] Reoder Buffer Configuration

2012-06-06 Thread Alex Cohn
On Wed, Jun 6, 2012 at 11:29 PM, Krishna krishn...@iwavesystems.com 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

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 br...@bighillsoftware.comwrote: Any ideas on

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

[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

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

2012-06-06 Thread Carl Eugen Hoyos
Khanh Nguyen Nam nnkhanh@... 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

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

2012-06-06 Thread Aleksey Shubin
2012/6/6 Geek.Song ffm...@gmail.com: 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).