http://blog.gmane.org/gmane.comp.video.ffmpeg.user hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37264 <pre> Hi Sir we are broadcast live stream on rtmp server using ffmpeg. we faced problem in live stream. problam is that after encode livestream on rtmp server than after one hour audio and video out of sync in live stream . Please help us Thanks in advenced Regards Chandra kant </pre> chandra.panchal< at >zengatv.com 2012-05-26T08:12:47 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37259 <pre>Hi all, I use following command to get video from image ffmpeg -loop 1 -r 5 -i input.jpg -c:v libx264 -preset slow -tune stillimage -crf 24 -t 10 output.mp4 it is great for mp4 but when i use the following command to produce a MPG ffmpeg -loop 1 -r 5 -i ../images/001.jpg -tune stillimage -crf 24 -s -t 10 -r 29.97 output.mpg I always get a blurred video Can some one please help me Thanks in advance </pre> Murthy Avanithsa 2012-05-25T18:57:44 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37257 <pre>Greetings, I've been trying to use ffmpeg to do a mov to mov conversion (with different size and bitrate in the output, otherwise it'd be useless of course). However, the output file has some white frames at the end. Running ffmpeg -i on both the original file and the resulting file, so I can see the details of the codification, reveals that the latter is 0.03 seconds longer (pasting raw output below). By googling I found this (http://forums.creativecow.net/thread/291/681). But using the -shortest parameter doesn't change anything, same results. Could any of you, please, give me a clue or point me to a resource to diagnose the problem? Many thanks in advance. Here you have raw ffmpeg output: - Compile $ ffmpeg -y -shortest -i (input file).mov -ar 44100 -b 1500000 -f mov -r 25 -s 640x360 (output file).mov ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers built on Apr 25 2012 10:56:47 with gcc 4.4.5 configuration: --enable-version3 --enable-libvpx --enable-libfaac --enable-libmp3l</pre> Jaume Lopez 2012-05-25T14:20:07 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37254 <pre>I have some streams in h264/aac and i have had to double the probesize value to get ffmpeg to recongise the audio/video correctly. As this is a MPEG-TS container and I know the values of the audio/video pids and their formats is there a way via the commandline to tell ffmpeg this info without going through the probing? joolz </pre> JULIAN GARDNER 2012-05-25T12:19:07 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37253 <pre>Hi Sir we are broadcast live stream on rtmp server using ffmpeg. we faced problem in live stream. problam is that after encode livestream on rtmp server than after one hour audio and video out of sync in live stream . Please help us Thanks in advenced Regards Chandra kant </pre> chandra.panchal< at >zengatv.com 2012-05-25T10:51:39 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37251 <pre>Hi, We are developing a video rendering app on Android using ffmpeg. The app crashes in avcodec_decode_video2 every now and then. We are releasing the decoder only once after it comes out of the rendering screen. Does the decoder need to be initialized every time the video is started and released every time the video is stopped? Thank you, B.Arunkumar </pre> Arunkumar 2012-05-25T07:12:01 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37249 <pre>Hi, I'm mixing audio for a movie on Ardour (an audio editing software), which can't export to AC3, but it can export multiple channels to other formats, e.g. FLAC. So I have it encoded in FLAC with 5.1 surround sound. I'd like to use ffmpeg to convert it to AC3 at 48kHz and 640kb/s with 5.1 surround (Dolby Digital). Here's what I have so far, but I'd like to change (or make sure it's correct) the channel layout. ffmpeg -i Session.flac -s:a 48k -ab 640k -acodec ac3 -ac 6 Session.ac3 Which returns ffmpeg version 0.10.3 Copyright (c) 2000-2012 the FFmpeg developers built on May 9 2012 17:51:07 with gcc 4.7.0 20120505 (prerelease) configuration: --prefix=/usr --enable-libmp3lame --enable-libvorbis --enable-libxvid --enable-libx264 --enable-libvpx --enable-libtheora --enable-libgsm --enable-libspeex --enable-postproc --enable-shared --enable-x11grab --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libschroedinger --enable-libopenjpeg --enable-librtmp --enable-libpulse --enable-gpl --enable</pre> Chase Patterson 2012-05-24T23:28:20 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37246 <pre>Hi; I want FFMPEG build my server. But I dont know. My server information is centos x64. How to install FFmpeg ? Can you help me ? Emrah BİLGİN Teknik Destek - Technical Support Adres : Nilüfer Ticaret Merkezi 633. Sk. No:13/3 Nilüfer / BURSA Tel : +90 (224) 443 60 60 Fax : +90 (224) 443 60 61 E-mail : emrah&lt; at &gt;vit.com.tr&lt;mailto:eyup&lt; at &gt;vit.com.tr&gt; Web : http://www.vit.com.tr&lt;http://www.vit.com.tr/&gt; [Açıklama: Açıklama: Açıklama: mail_imza] P Lütfen bu e-postanın çıktısını almadan önce doğaya etkisini düşünün P Please consider the environment before printing this email _______________________________________________ ffmpeg-user mailing list ffmpeg-user&lt; at &gt;ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user </pre> Emrah BİLGİN 2012-05-24T14:10:37 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37244 <pre>Hi Can you please help me in building ffmpeg for Android on Windows MiNGW. I am facing the below problem: AR libavcodec/libavcodec.a LD ffmpeg_g.exe LD ffplay_g.exe LD ffprobe_g.exe INSTALL libavcodec/libavcodec.a CP ffmpeg.exe STRIP ffmpeg.exe CP ffprobe.exe STRIP ffprobe.exe CP ffplay.exe STRIP ffplay.exe INSTALL install-progs-yes INSTALL ffmpeg.exe INSTALL ffplay.exe INSTALL ffprobe.exe d:\android-ndk-r8\toolchains\arm-linux-androideabi-4.4.3\prebuilt\windows\bin\ar m-linux-androideabi-ld.exe: cannot open output file ./android/armv7-a/libffmpeg. so: No such file or directory libavcodec/tscc.c:97:24: warning: assignment discards qualifiers from pointer ta rget type ./libavcodec/avcodec.h:40:0: fatal error: when writing output to : Invalid argum ent compilation terminated. libavcodec/vc1dsp.c: In function 'ff_vc1dsp_init': This is my build script: NDK=/d/android-ndk-r8 PLATFORM=$NDK/platforms/android-9/arch-arm/ PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows function build_one_r6 </pre> Harish Pulimi 2012-05-23T09:05:28 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37243 <pre>Hi, Please, explain whats wrong with the duration detection: "12:08:10.44"? There are two outputs from the same video below: ffmpeg and MediaInfo. MediaInfo gives "1h 56mn" for the duration - its OK. Thanks in advance! -------- On server: ffmpeg -i video.flv 2&gt;&amp;1 ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers built on Apr 18 2012 10:24:03 with gcc 4.4.6 20110731 (Red Hat 4.4.6-3) configuration: --prefix=/usr/local/ffmpeg-0.10.2 --enable-shared --enable-pthreads --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-nonfree --enable-gpl --enable-libmp3lame --enable-libxvid --enable-libvorbis --enable-libfaac --enable-libx264 --enable-avfilter --enable-postproc --enable-version3 libavutil 51. 35.100 / 51. 35.100 libavcodec 53. 61.100 / 53. 61.100 libavformat 53. 32.100 / 53. 32.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 61.100 / 2. 61.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 6.100 / 0. 6.100 libpostpr</pre> Andrew Gora 2012-05-23T06:27:30 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37242 <pre>Hi, Could somebody explain whats wrong with the duration detection: "12:08:10.44"? There are two outputs from the same video below: ffmpeg and MediaInfo. MediaInfo gives "1h 56mn" for the duration - its OK. Thanks in advance! -------- On server: ffmpeg -i video.flv 2&gt;&amp;1 ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers built on Apr 18 2012 10:24:03 with gcc 4.4.6 20110731 (Red Hat 4.4.6-3) configuration: --prefix=/usr/local/ffmpeg-0.10.2 --enable-shared --enable-pthreads --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-nonfree --enable-gpl --enable-libmp3lame --enable-libxvid --enable-libvorbis --enable-libfaac --enable-libx264 --enable-avfilter --enable-postproc --enable-version3 libavutil 51. 35.100 / 51. 35.100 libavcodec 53. 61.100 / 53. 61.100 libavformat 53. 32.100 / 53. 32.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 61.100 / 2. 61.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 6.100 / 0. 6.100 li</pre> Andrew Gora 2012-05-21T19:49:44 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37241 <pre>Hello, maybe somebody of you can help me out! My problem is, i need to convert many movies as they come to either mp4 or flv to be able to stream(!) perfectly afterwards. I don`t know anything about the videos before they get to encoding, and the script should be run by Cronjob automatically. And now i am experimenting a lot with different FFMPEG settings to achieve this! The latest info i got was a HQ 2pass encoding technique-as i am not having the preset for HQ availiable i had to search for the whole shell command. These are the commands which should be done, but FFMPEG is stopping without a reason, and the output file has a size of 0 after finishing. I watched the process and have seen that the filesize goes up to the same size it would have when i just do the pass 1 and then back to zero and finishes: no output nothing. for info: if i do each command seperatly they work smoothly! $convert_call_pass_1 = $ffmpegPath . " -y -i " . $video_to_convert . " -r 30000/1001 -b 2M -bt 4M -vcodec libx264 -pass 1</pre> surekin 2012-05-20T21:18:59 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37231 <pre>Hi, I have tested libvo_aacenc as a redistributable aac encoder but recently noticed that there are audible quality differences compared to a better aac encoder even at rather high bit rates such as 192 or 256k. I doublechecked if it was the right encoder that was used as opposed to the internal one and the bitrate and both are correct. Am I the only one noticing this or has anyone else had quality problems with libvo_aacenc? Any special CL parameters I'm not seeing? Thanks in advance, Robert </pre> Robert Krüger 2012-05-24T16:01:48 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37230 <pre>Hi, I used ffmpeg to convert videos to WMV (in Linux) and then embed them in Powerpoint (in Windows) Since a couple of weeks, the conversion still succeeds, but when I embed them in Powerpoint, the WMV videos are not playing anymore and sometimes the computer freezes. Playing fine in VLC. Is anyone experiencing the same problem? I use the following syntax: /usr/local/bin/ffmpeg -i 'test.mp4' -vcodec wmv2 -acodec wmav2 -ac 2 -qmin 6 - qmax 8 -b:a 128k -ar 44100 -r 25 -nostats -y 'test.wmv' ffmpeg version N-40696-gb977779 Copyright (c) 2000-2012 the FFmpeg developers built on May 15 2012 14:26:38 with gcc 4.6.2 configuration: --enable-gpl --enable-version3 --enable-shared --enable- nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable- libopencore-amrnb --enable-libopencore-amrwb --enable-libvorbis --enable- libtheora --enable-libvpx --enable-libspeex --enable-libxvid --enable-libx264 --disable-network --disable-stripping --enable-libschroedinger --enable-libgsm --enable-avfilte</pre> Juan Garrido 2012-05-24T15:59:00 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37223 <pre>Hi, I am testing using FFV1 encoding and have some questions on use. When encoding to &gt;8 bit (like ffmpeg v210.mov -c:v ffv1 ffv1.mov) I get this warning: [ffv1 &lt; at &gt; 0x7f83a1850a00] bits_per_raw_sample of more than 8 needs -coder 1 currently Could -coder 1 be the default in circumstances like this? Is there a disadvantage to using -coder 1? In other cases ffmpeg will provide an error and no output when the user needs to provide more information to make a decision about the encoding. In this case there doesn't seem to be any significant decisions to be made, the user just has to add -coder 1. With FFV1 version 3 specifically, when I run a command like this: ffmpeg -y -f lavfi -i testsrc=duration=5 -c:v ffv1 -level 3 -strict experimental out.mov I get the error: [ffv1 &lt; at &gt; 0x7fd879850a00] Unsupported number 0 of slices requested, please specify a supported number with -slices (ex:4,6,9,12,16, ...) If I specify slices manually, -slices 4, then the encode will work. To make this simply could ffv1 version 1.3 use</pre> Dave Rice 2012-05-24T14:43:11 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37221 <pre>Looking for a ffmpeg developer in Toronto GTA, please send your inquiries to mediastream &lt; at &gt; gmail Thanks. Dennis. </pre> Dennis 2012-05-24T13:50:57 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37214 <pre>Hi all, I am using ffmpeg to generate video from sequence of images "ffmpeg -i images%d output.mpg" How do i add time of each image to be displayed say example(10 sec each image) Thank you. </pre> Murthy Avanithsa 2012-05-24T12:41:47 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37207 <pre>Hi, I am using the latest FFmpeg version in my CQ5 to play videos. This is been used in UNIX server. The video gets played properly, but I don't get the preview image (thumbnail) for few videos. The one video which shows the thumbnail has the same renditions as that of the other which doesn't show a thumbnail. Here both videos are of .wmv format. Why is the thumbnail not shown for few videos? Below are the list of files that are created inside the renditions folder for both set of videos Cq5dam.thumbnail.140.100.png Cq5dam.thumbnail.319.319.png Cq5dam.thumbnail.48.48.png Cq5dam.video.firefoxhq.ogg cq5dam.video.flv.320.240.flv cq5dam.video.hq.m4v original Thanks and regards, Sujith. **************** CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or dist</pre> Sujith Chandran 2012-05-24T08:54:45 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37204 <pre>Hi, I have a question regarding the use of h264 in a Debian server. My server provider told me that libx264 is not stable in Debian, so instead they've installed h264. As far as I'm concerned, libx264 and h264 are the same, am I wrong? The following command that it worked perfectly in a Freebsd server, it's not working on a Debian one. They say that I should use another codec that is not h264 although it's installed (?), so I feel they are confused. So what's the correct way to declare -vcodec libx264 in Debian then? $output=runExternal($ffmpeg_path."ffmpeg -y -r 7 -i ".$servpath."img%d.jpg -r 7 -b 1000K -vcodec libx264 -flags +loop -me_method hex -g 250 -qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -bf 3 -b_strategy 1 -i_qfactor 0.71 -cmp +chroma -subq 8 -me_range 16 -coder 1 -sc_threshold 40 -flags2 +bpyramid+wpred+mixed_refs+dct8x8+fastpskip -keyint_min 25 -refs 3 -trellis 1 -directpred 1 -partitions -parti8x8-parti4x4-partp8x8-partp4x4-partb8x8 -threads 0 -y ".$servpath."video.mp4 Thanks! Joana. </pre> Joana Moll 2012-05-24T08:29:20 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37193 <pre>Hello, I'd like to get te codec being used by an avi file. I thought it was with the -i option, but it wasn't i used this option with twi .AVI that have different codec and I don't see the difference. Thanks Rossana </pre> Rossana Guerra 2012-05-24T07:01:40 http://comments.gmane.org/gmane.comp.video.ffmpeg.user/37174 <pre>I'm trying to remove all metadata from a MOV file I have. For earlier (?) versions of FFmpeg, the map_metadata -1 switch should have stripped all metadata, but it doesn't appear to do so anymore. The metadata record has gone down from ~80 lines to about 50, but still things like creation_time etc. are preserved. According to this post &lt;http://askubuntu.com/a/139581&gt; even these timestamps should be deleted, but this used an ancient FFmpeg version. So, how can I remove as many metadata entries as possible? Best regards, Werner Robitza ############################################### This is the command used, and full output below: ffmpeg -i in.mov -map_metadata -1 -c:v copy -c:a copy out.mov ffmpeg version 0.10.3 Copyright (c) 2000-2012 the FFmpeg developers built on May 14 2012 23:40:56 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3) configuration: --prefix=/usr/local/Cellar/ffmpeg/0.10.3 --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-libfreetype --c</pre> Werner Robitza 2012-05-23T17:41:07 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.video.ffmpeg.user