[Libav-user] what negative start_time means

2013-03-21 Thread 黄轩宇
Hi Guys, I met a problem when opening a testing ts file. https://dl.dropbox.com/u/89678527/aavv_mpeg2video_30_yuv420p_dar4x3_sar10x11_ac3_48000_2_1.ts The start_time field of all 4 streams (2 video streams and 2 audio streams) are negative values. Does anyone knows what this means? Great thanks

Re: [Libav-user] Help with a couple of bitmap scaling issues

2013-03-21 Thread Nicolas George
Le primidi 1er germinal, an CCXXI, aeseldyrx a écrit : > Should I report the green tint bug on trac? I just did: https://ffmpeg.org/trac/ffmpeg/ticket/2394 > Any idea, why this doesn't happen, when FFmpeg is compiled with MSVC? Not at all. Possibly assembly optimization that are not used. Can y

Re: [Libav-user] Help with a couple of bitmap scaling issues

2013-03-21 Thread aeseldyrx
Thanks for the prompt reply, Nicolas. Should I report the green tint bug on trac? Any idea, why this doesn't happen, when FFmpeg is compiled with MSVC? > IMHO, lsws driving code should detect this kind of extreme scaling and split > it automatically into manageable steps. I have no idea what wou

[Libav-user] Setting the bitrate of a rtsp stream to be read

2013-03-21 Thread Czarnek, Matt
Hello, I am reading a video stream coming in via RTSP, when I set it on the other end to 10 fps, it will read in successfully. However, when I set it to stream at 15 fps, then it drops every 16th frame, which seems to be an iframe. So the question is, how do I change it so that I can support hi

Re: [Libav-user] How to get started with libav basics

2013-03-21 Thread René Calles
Thank you Carl, i already had a look at them and couldn't figure out where to start. Do you have any advice? Thanks for your help. René Am 21.03.2013 um 14:37 schrieb Carl Eugen Hoyos : > René Calles writes: > >> i would like to ask you for help about pointing me where to >> start ( except

Re: [Libav-user] Help with a couple of bitmap scaling issues

2013-03-21 Thread Nicolas George
Le primidi 1er germinal, an CCXXI, aeseldyrx a écrit : > 1. The first issue happens, when I try down-scaling a large bitmap > (4608x3328) to a much smaller size (e.g. 256x185). > The resulting image resembles the original, however all colours have become > slightly more green during the scaling. >

[Libav-user] Help with a couple of bitmap scaling issues

2013-03-21 Thread aeseldyrx
Hi, I've recently been testing image decoding and scaling with FFmpeg (compiled with mingw as dlls on Windows 7 x64), and everything has been working smoothly with the exception of two problems. Both problems are seemingly related to down-scaling of large images. As mentioned in the subject, I ex

Re: [Libav-user] How to get started with libav basics

2013-03-21 Thread Carl Eugen Hoyos
René Calles writes: > i would like to ask you for help about pointing me where to > start ( except for programming language ) to understand the > basics in programmatically using Libav in general. I would > like to understand the general basics and hope someone could > point me to some resour