December 2008 - ffmpeg-user - lists.ffmpeg.org

CODEC_FLAG_TRELLIS_QUANT
by ffrank1975＠gmail.com 31 Dec '08

31 Dec '08

Hi to all, I successfully updated to the svn version my ffmpeg installation. In my old code I set a CODEC_FLAG_TRELLIS_QUANT extraflag for the mp4 format. I tried to recompile the code with the new libraries and now I can't. The flag has been removed? Where I can check these changes without be a patch developer but a normal developer? Regards, Franco

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Build ffmpeg svn version failed
by leon.kuang＠live.cn 30 Dec '08

30 Dec '08

Hi all, I used the latest SVN version to test rmvb. I can build it passed based on x86 and also can play rmvb file. But built it failed based on arm by using "./configure --prefix=/usr/gpephone --disable-armv6".There are some errors as following: ... libavocodec/armv4l/mathops.h:32: error:impossible constraint in "asm"... Could you help me on this? Thanks a lot! Regardsleon.kuang _________________________________________________________________ ???????? ?? Windows Live? ???????? http://www.microsoft.com/windows/windowslive/

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ffserver on cygwin
by gyalpp＠gmail.com 30 Dec '08

30 Dec '08

Hi all, I tried to make a static build of ffserver on cygwin. The ffserver.exe was generated successfully. However, when I run it, I got the following error message. $ ffserver.exe -f doc/ffserver.conf FFserver version SVN-r16366, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-static --disable-shared --extra-ldflags=-L /usr/local/lib --extra-libs=-l llrint libavutil 49.12. 0 / 49.12. 0 libavcodec 52. 9. 0 / 52. 9. 0 libavformat 52.23. 1 / 52.23. 1 libavdevice 52. 1. 0 / 52. 1. 0 built on Dec 28 2008 17:50:31, gcc: 3.4.4 (cygming special, gdc 0.12, using dmd 0.125) bind(port 8090): Address family not supported by protocol Sun Dec 28 20:12:40 2008 Could not start server I've tried to google "ffserver" and "cygwin" but could not find too much information. Just wonder if anyone has successfully run ffserver on cygwin. Or is it simply impossible to do it? Thanks for your help. Ben

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Amr link not accessible
by javaone9＠yahoo.com 30 Dec '08

30 Dec '08

>From the page http://www.mplayerhq.hu/DOCS/HTML-single/en/MPlayer.html#codec-installation ? I tried to download and install amr from: http://www.penguin.cz/~utx/amr ? But the link was not accessible. I tried many times. no luck.? Is the link moved? ? Thanks for help. Dave ?

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Encode truncated mov
by fant0m4s＠gmail.com 30 Dec '08

30 Dec '08

Hi! I was recording a mov file from a streaming, but the system crashed and have to reboot, now, if I try to play the video with mplayer I get the following error several times AC EOB marker is absent pos=64 AC EOB marker is absent pos=89 AC EOB marker is absent pos=65 And if I try to convert the video to flv I get Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mov': Duration: N/A, bitrate: N/A Output file does not contain any stream ?Is there any way to recover the video? Thanks in advance, Manuel

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Converting avi to swf with controls
by wpanssi＠gmail.com 30 Dec '08

30 Dec '08

Hi, I'm using windows XP. I installed ffmpeg and I managed to create a swf file out of avi file. Is it also possible to add play/pause/rewind controls to the resulting swf file via ffmpeg? How can this be done? Thanks in advance!

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JavaFX FXM container
by chaz＠chaz6.com 30 Dec '08

30 Dec '08

Just a heads up, I noticed there is a new container format comprising VP6 and MP3. I was not able to find a good guide to the format, but I presume it is contained somewhere inside the JavaFX SDK under the moniker "JavaFX Media". Further information:- http://support.on2.com/flixengine/linux/api/group__muxer__fxm.html

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problems with Flash ADPCM
by w.a.de.jong＠gmail.com 29 Dec '08

29 Dec '08

Hello List, This may be somewhat off topic - my apologies. I am writing to this list because I hope to find someone here who can help me with a problem concerning ADPCM encoded sound in SWF (flash) files. I have sent a similar request to Adobe, and they referred me to ffMpeg. To the sourcecode, not to the mailing list, but unfortunately I haven't managed to find the answer in the sourcecode - I am not a C programmer. I am trying to create an ADPCM encoder in Erlang, a functional programming language. The encoded sound will be part of a Flash file, so it has to be in blocks of 4095 samples, with an uncomressed sample and a step-index preceding each block, as described in version 10 of the SWF and FLV Flash File Format specification. Unfortunately I do not succeed in getting the values for these uncompressed samples and the step-index right. Whatever I try, I keep hearing a small noise in between the blocks. I am actually beginning to wonder whether it is perhaps a problem of the flash player. The Flash File spec refers to a C program by Jack Jansen, but that doesn't help me, because that program is not doing the framing that Flash requires. My assumtion is that it should work as follows: - for the very first block, I can simply take 0 for both the InitialSample and the InitialIndex. This causes a slight distortion of the first wave, but that doesn't matter. - when I have reached the last sample of a block, I calculate the "predicted value", using the current index-step value and the previous (predicted) value (just as I would do if this would not be the last sample). I put this predicted value and the new index-step into the appropriate fields of the new ADPCMMonoPacket, and I move on to the next sample. Result: the noise a mentioned. As I said, I have tried various other approaches (even really weird ones), but nothing helps. So, if there is anyone who understands the SWF ADPCM encoding: you help will be greatly appreciated! Regards, Willem

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FFmpeg documentation (German)
by christian_schwoerer＠yahoo.de 29 Dec '08

29 Dec '08

Hi, during my studies at the University of Applied Sciences "Hochschule der Medien Stuttgart" I wrote a German documentation, which explains how to install and use the FFmpeg-tools. It can be found on my website: http://www.christian-schwoerer.de/arbeiten.html#MNA?or http://www.hdm-stuttgart.de/~cs116/downloads/FFmpeg_Kurzanleitung.pdf Perhaps this could be useful for other users. In this case, feel free to link to my website or the document. If you don't think so, sorry for bothering you. Yours, Christian Schw?rer

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Using FFmpeg to convert AVCHD streams with broken timestamps into Mpeg2
by jm＠poure.com 29 Dec '08

29 Dec '08

Dear friends, I am trying to write a howto to transcode broken AVCHD files into high quality I Frames only Mpeg2. I may downgrade quality to avoid too large files. My question: Can FFmpeg fix broken timestamps? Two examples: http://www.kdenlive.org/video-editor/canon-hg10 http://www.kdenlive.org/video-editor/canon-hf11 I tried ffmpeg -i canon-hf11-avchd.MTS -f mpeg -acodec copy -vcodec mpeg2video -qscale 1 -qmin 1 -intra canon-hf11-mpeg2.mpg but timestamps are still broken. Any idea? Kind regards, Jean-Michel

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