29 juin

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 00:00
  Could not load or assembly or one of its dependencies - Prathibha Chiranthana Newest 'ffmpeg' Questions - Stack Overflow
  I am using Aforge.net frame work for doing image processing work. I have add 'AForge.Video.FFMPEG.dll' as a referance to my project. I am using VS2012 and 32 bit build target. When Buiding i get System.IO.FileNotFoundException was unhandled HResult=-2147024770 Message=Could not load file or assembly 'AForge.Video.FFMPEG.dll' or one of its dependencies. The specified module could not be found. Source=VideoReadere FileName=AForge.Video.FFMPEG.dll FusionLog="" StackTrace: at VideoReadere.Form1..ctor() at VideoReadere.Program.Main() in c:\\Users\\Prabad\\Documents\\Visual Studio (...)

28 juin

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 21:47
  Update mp4 object type for VP9 - KongQun Yang git.videolan.org Git - ffmpeg.git/rss log
  Update mp4 object type for VP9 Updated to the standard value 0xB1 defined in mp4ra.org. Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavformat/isom.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 23:25
  Linker error with FFmpeg on Windows - Tiwenty Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to link FFmpeg libraries to a C program on Windows, but I can't successfully link the libraries. I downloaded the Dev archive from Zeranoe and put it into my project folder. The compilation works well but when I'm trying to link libraries, I get some undefined reference errors. Here is the command I'm trying: gcc -o .\\metadata.exe .\\metadata.o -L .\\ffmpeg-20170628-c1d1274-win64-dev\\lib\\ -lavutil -lavformat -lavdevice -lavfilter -lavcodec -lswresample -lswscale -lm It then outputs me: .\\metadata.o:metadata.c:(.text+0x44): undefined reference to 'av_register_all' (...) -- Zeranoe

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 18:47
  avcodec/cfhd: Fix invalid left shift of negative value - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/cfhd: Fix invalid left shift of negative value Fixes: runtime error: left shift of negative value -1 Fixes: 2395/clusterfuzz-testcase-minimized-6540529313513472 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/cfhd.c
• 18:29
  avcodec/vb: Check vertical GMC component before multiply - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/vb: Check vertical GMC component before multiply Fixes: runtime error: signed integer overflow: 8224 * 663584 cannot be represented in type 'int' Fixes: 2393/clusterfuzz-testcase-minimized-6128334993883136 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/vb.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 21:59
  Converting .mkv to h.264 FFmpeg - herman die dev Newest 'ffmpeg' Questions - Stack Overflow
  I would like to convert my .mkv files to .mp4 using FFmpeg. I have tried the following code: ffmpeg -i input.mkv -c:v libx264 -c:a libvo_aacenc output.mp4 But I get the error: Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height. Is there any way to get around this? I have tried setting the bitrate of the audio but the problem seems to persist.
• 21:55
  Matplotlib animation quality loss - Doe a Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently trying to use matplotlib to animate a grid using imshow. However, I am finding a fairly significant quality loss in the animation. Below is a simple animation that illustrates my issue fairly well. If you look at any particular frame of imagelist, you will see that there is no aliasing or gradient between colours. But if I then look at one frame of my animation, that is no longer the case. There is now a 4-5 pixel gradient between my blocks of colour. Does anyone know how I can get around this compression? The file size of the animation doesn't matter too much, as long as I (...)
• 21:42
  Understanding PTS and DTS in video frames - theateist Newest 'ffmpeg' Questions - Stack Overflow
  I had fps issues when transcoding from avi to mp4(x264). Eventually the problem was in PTS and DTS values, so lines 12-15 where added before av_interleaved_write_frame function: 1. AVFormatContext* outContainer = NULL; 2. avformat_alloc_output_context2(&outContainer, NULL, "mp4", "c:\\\\test.mp4"; 3. AVCodec *encoder = avcodec_find_encoder(AV_CODEC_ID_H264); 4. AVStream *outStream = avformat_new_stream(outContainer, encoder); 5. // outStream->codec initiation 6. // ... 7. avformat_write_header(outContainer, NULL); 8. // reading and decoding packet 9. // ... 10. (...)
• 21:00
  Add Filters to Video like Instagram or Snapchat via FFmpeg - Karandeep Atwal Newest 'ffmpeg' Questions - Stack Overflow
  I am using FFmpeg in my android app. I have implemented following filters/effects successfully on video- Invert Color Black and white Sepia Vignette Gamma effect I followed FFmpeg Video Filter docs. There are similar questions asked but without any proper answer. I want to apply some Good Filters like on Instagram or Snapchat via FFmpeg . Below are few example filters taken from this link. Can these filters be achieved via ffmpeg ? -- example, this, ,
• 20:16
  ffmpeg not copy id3v2 comment field (ubuntu16.04 + php7) - grizzly Newest 'ffmpeg' Questions - Stack Overflow
  this code is correct to converting mp3 320kbps to 64kbps: exec("/usr/bin/ffmpeg -y -i input320kb.mp3 -map_metadata 0 -id3v2_version 3 -write_id3v1 1 -b:a 64k -threads 0 output64kb.mp3"); all fields copy and true.but field comment not copy and empty. why?
• 20:01
  FFmpeg transcoding stretches Vertically recorded videos - oteamm Newest 'ffmpeg' Questions - Stack Overflow
  Hi I am having an issue with the Transcoder (FFmpeg) . Problem Details: Vertically recorded videos are appearing stretched (widened) upon transcode. For videos which are recorded vertically (height is more than width), the transcoded video generated does shrink vertically. If we change the aspect ratio for such files it will ruin the other video transcodes for which the transcode is generating correctly. Expected Behaviour: should not shrink/stretch vertically recorded videos Impact: we are seeing a distorted version of video, stretched horizontally Notes: Version of FFmpeg Software (...)
• 19:06
  ValueError When Reading Video Frame - Bassie Newest 'ffmpeg' Questions - Stack Overflow
  I am following this article, from where I got this code: FFMPEG_BIN ="Z:\\ffmpeg\\bin\\ffmpeg.exe" import subprocess as sp command = [ FFMPEG_BIN, '-i', 'video.mp4', '-f', 'image2pipe', '-pix_fmt', 'rgb24', '-vcodec', 'rawvideo', '-'] pipe = sp.Popen(command, stdout = sp.PIPE, bufsize=10**8, shell=True) import numpy # read 420*360*3 bytes (= 1 frame) raw_image = pipe.stdout.read(420*360*3) # transform the byte read into a numpy array image = numpy.fromstring(raw_image, dtype='uint8') image = image.reshape((360,420,3)) # throw away the data in the pipe's buffer. pipe.stdout.flush() When I (...) -- this article
• 18:28
  FFMpeg is slow on Android [duplicate] - Oleg Filimonov Newest 'ffmpeg' Questions - Stack Overflow
  This question already has an answer here: Precompiled FFmpeg for android versus building FFmpeg using android NDK 2 answers Fast Video Compression on Android 2 answers I'm using this library: https://github.com/WritingMinds/ffmpeg-android Executing this command: ffmpeg -y -i video.mp4 -ignore_loop 0 -i overlay.gif -filter_complex ` >> "[0][1]overlay=x=mod((1080/4 + sin(t)*1080/4)\\,1920):y=mod(t*300\\,1080):shortest=1[res];` >> [res][1]overlay=x=mod((200*1 + 1080/4 - sin(2*t)*1080/4)\\,1920):y=mod(100 + t*300\\,1080):shortest=1[res];` >> [res][1]overlay=x=mod((200*2 + 1080/4 - sin(-90 + (...) -- https://github.com/WritingMinds/ffmpeg-android,

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 17:35
  avcodec/interplayvideo: use correct context when checking for enough bytes - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/interplayvideo: use correct context when checking for enough bytes Fixes #6502. Signed-off-by: Paul B Mahol <onemdaⓐgmail.com> [DH] libavcodec/interplayvideo.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 18:00
  How can I mux a MKV and MKA file and get it to play in a browser? - Robert Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to merge .mkv and .mka files into .mp4 files. My current command looks like this: ffmpeg -i video.mkv -i audio.mka output_path.mp4 The audio and video files are pre-signed urls from Amazon S3. Even on a server with sufficient resources, this process is going very slowly. I've researched situations where you can tell ffmpeg to skip re-encoding each frame, but I think that in my situation it actually does need to re-encode each frame. I've downloaded 2 sample files to my macbook pro and have installed ffmpeg locally via homebrew. When I run the command ffmpeg -i video.mkv (...)
• 17:57
  OSError: [WinError 6] Checking Video Duration of Clips moviepy ffmpeg - Frikkie Maritz Newest 'ffmpeg' Questions - Stack Overflow
  Any help will do my script used too run 100% without any problems but since yesterday keep getting this error Traceback (most recent call last): File "C:\\Users\\renushas\\Desktop\\videoCompuser Temp.py", line 19, in video1 = VideoFileClip(clipspath) File "C:\\Program Files\\Python36\\lib\\site-packages\\moviepy\\video\\io\\VideoFileClip.py", line 81, in __init__ fps_source=fps_source) File "C:\\Program Files\\Python36\\lib\\site-packages\\moviepy\\video\\io\\ffmpeg_reader.py", line 32, in __init__ fps_source) File "C:\\Program Files\\Python36\\lib\\site-packages\\moviepy\\video\\io\\ffmpeg_reader.py", line 256, in (...)
• 16:10
  ffprobe/ffmpg silence detection command - user3130478 Newest 'ffmpeg' Questions - Stack Overflow
  I'm working on a stream silence detection. It's working on the following command in ffmpeg: ffmpeg -i http://mystream.com/stream -af silencedetect=n=-50dB:d=0.5 -f null - 2> log.txt I would like to get a json output of the logfile. There is a json option in 'ffprobe' but silencedetect=n=-50dB:d=0.5 is'nt working. Help! Cheers!

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 16:49
  Evolution #3692: Suivre les évolution de MediaJS - b b Revisions : SPIP
  Deux points : je ne crois pas qu'on utilise l'API facetruc, et on peut sans problème mettre à jour la lib dans une release mineure, on le fait bien plus souvent que tu ne penses le croire :)
• 16:44
  Evolution #3692: Suivre les évolution de MediaJS - Franck D Revisions : SPIP
  Hello, juste pour dire que la version 4.2.2 vient de sortir https://github.com/mediaelement/mediaelement/blob/master/changelog.md J'ai pas fait de test, Il y a pas mal de corrections de bugs, mais aussi la mise à jour de l'API Facebook. Elle était en 2.6 et passe en 2.9 ! https://github.com/mediaelement/mediaelement/commit/8a5760dc6ca3fe5c32eb26f44142e579d718128a L'intérêt de mettre à jour la lib, c'est que cela fonctionne, après le 13 juillet 2018 https://developers.facebook.com/docs/apps/changelog Nous ne mettons pas souvent à jour les libs, (sauf sécu ou gros bug) dans les versions mineures (...)

git.videolan.org Git - ffmpeg.git/rss log http://git.videolan.org/?p=ffmpeg.git;a=summary

• 15:18
  avcodec/interplayvideo: return void - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/interplayvideo: return void Signed-off-by: Paul B Mahol <onemdaⓐgmail.com> [DH] libavcodec/interplayvideo.c
• 15:14
  avcodec/interplayvideo: fix dead-lock - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/interplayvideo: fix dead-lock Fixes #6499. Signed-off-by: Paul B Mahol <onemdaⓐgmail.com> [DH] libavcodec/interplayvideo.c
• 15:07
  avcodec/interplayvideo: use int16_t instead of short - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/interplayvideo: use int16_t instead of short Signed-off-by: Paul B Mahol <onemdaⓐgmail.com> [DH] libavcodec/interplayvideo.c
• 14:59
  avcodec/interplayvideo: check that video_size is >0 - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avcodec/interplayvideo: check that video_size is >0 Fixes #6498. Signed-off-by: Paul B Mahol <onemdaⓐgmail.com> [DH] libavcodec/interplayvideo.c

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 15:47
  How to generate an RTMP test stream using ffmpeg command? - Daniel Stefaniuk Newest 'ffmpeg' Questions - Stack Overflow
  I would like to test my streaming infrastructure by generating an RTMP test video with a timestamp. This could look like that screen. The image doesn't matter. I'm after the working stream generated on-the-fly and timestamp only. I intend to use the ffmpeg tool for that purpose. The command could look something like $ ffmpeg -i image.png \\ -vf drawtext="fontfile=/Library/Fonts/Arial.ttf: \\ timecode='00\\:00\\:00\\:00': r=1: fontcolor=white: \\ fontsize=24: box=1: boxcolor=blackⓐ0.5: \\ boxborderw=5: x=(w-text_w)/2: y=(h-text_h)/2" \\ -f flv rtmp://localhost/live/test I do run locally a (...) -- screen, a streaming server
• 15:09
  What is the best way to merge .mkv and .mka files using ffmpeg? - Robert Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to merge .mkv and .mka files into .mp4 files. My current command looks like this: ffmpeg -i video.mkv -i audio.mka output_path.mp4 The audio and video files are pre-signed urls from Amazon S3. Even on a server with sufficient resources, this process is going very slowly. I've researched situations where you can tell ffmpeg to skip re-encoding each frame, but I think that in my situation it actually does need to re-encode each frame. I've downloaded 2 sample files to my macbook pro and have installed ffmpeg locally via homebrew. When I run the command ffmpeg -i video.mkv (...)
• 14:39
  FFMPEG conversion from .H264 to MP4 playing too fast - NickR Newest 'ffmpeg' Questions - Stack Overflow
  I accidentally deleted a video file but managed to save it with a recovery tool. The video was however corrupted, but I managed to repair that and now have a .h264 file. The file plays ok in the VLC player. There are a few glitches but on the whole its 98% perfect. However I now need to convert that into a more useable format (mp4 say). Ive downloaded the FFMPEG tool and have managed to pretty easily copy into mp4 with the following command line instruction: ffmpeg -i repairedVid.h264 -c copy repairedVid.mp4 The problem is that the video is playing much too fast. I've done some (...)
• 14:00
  Uploading single video file with subtitles to Facebook - Lukeg4 Newest 'ffmpeg' Questions - Stack Overflow
  I'm using ffmpeg to create a single video file with subtitles (captions) included for uploading to facebook. I've had success with creating the video file with subtitles included, but when I upload the file to facebook it comes up with no subtitles and no subtitle options. I can't add subtitles manually on facebook, because the subtitles need to work across multiple platforms, and I can't burn the subtitles permanently onto the video... So, is it possible to upload a single video file, with subtitles included (ideally an MPEG-4...), and have facebook recognise and use the subtitles (...)
• 13:15
  Converting DPX to JPEG2k in RGB using FFMPEG - Alarmguy66 Newest 'ffmpeg' Questions - Stack Overflow
  I am attempting to use FFMPEG to convert a 2k DPX sequence that is 10 bit RGB into a Lossless JPEG2k wrapped in MXF, 10 bit with RGB colorspace, wrapped in MXF, Op1a. The following is my code - ffmpeg -y -i \\PATH\\test\\0%05d.dpx -r 24 -c:v libopenjpeg -pred 1 c:\\temp\\123.mxf The conversion works in almost every fashion, the exception being the JPEG file is output as YUV with every conversion attempt. I have tried using the jpeg2000 library as well, that always gives an 8 bit output, YUV. FFMPEG -version responds - N-85179-gdc1a1b8 There is no audio accompanying the (...)
• 13:02
  Does AVFrame store AV_PIX_FMT_YUV420P data as YVU? - Peter Newest 'ffmpeg' Questions - Stack Overflow
  I am decoding raw H.265 data using avcodec_decode_video2 api. When I examine the resulting instance pictYUV of type AVFrame, I see that pictYUV->format is AV_PIX_FMT_YUV420P and pictYUV->data[0] points to Y-plane. Both of these are expected. However, it appears pictYUV->data[1] seem to contain V-plane data and pictYUV->data[2]seem to contain U-plane data. My intuition was that pictYUV->data would store YUV planes in that order and not YVU planes. Wondering if the data is always ordered as YVU or is there some flag I failed to look at. (...)
• 12:37
  FFmpeg - The two pass in VP9 generates a empty output file for the first pass - C. Kmer Newest 'ffmpeg' Questions - Stack Overflow
  When I try to encode a video file with a two pass in ffmpeg, the output file of the first pass is empty using vp9. Hence I can not proceed with the second part. Code for the two-pass: 1.pass: ffmpeg -y -s:v 3840x1920 -framerate 30 -i video_framerate_resolution.yuv -c:v libvpx-vp9 -crf 20 -pass 1 -an -f avi NULL && \\ 2.pass ffmpeg -s:v 3840x1920 -framerate 30 -i video_framerate_resolution.yuv -c:v libvpx-vp9 -pass 2 -b:v 1000K -f avi out.avi Any help would be greatly appreciated. (...)
• 12:12
  FFmpeg VP9 - Different Quantisation Parameters but same output files - C. Kmer Newest 'ffmpeg' Questions - Stack Overflow
  I want to encode a video with vp9 with different quantisation parameters (qp=[16,20,24,28,32]). Unfortunately the output files have the same data rate after encoding and don't show any quality differences. This is my code for qp=20: ffmpeg -s:v 3840x1920 -framerate 30 -i video_3840x1920_30fps_8bit_420_erp.yuv -c:v libvpx-vp9 -qp 20 -f avi out.avi Many thanks for any pointers you can give me.

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 11:16
  Evolution #3966: Date de création des contenus - nico d_ Revisions : SPIP
  Je suis bien d'accord qu'on aurait besoin d'une vraie date de création sur la plupart des objets. Une date immuable, qui n'a rien à voir avec une date de publication. Savoir quand une personne s'est inscrite par exemple, le truc qui manque pas mal.

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 11:28
  Working on FFmpeg with VC++ 2010 - user3743908 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use FFmpeg in VC++ 2010 so that i can use ffmpeg in to my VC++ Code , i first Install the FFmpeg in to machine by Help provided by youtube video "FFMPEG build for windows" while building the sample code provided by ffmpeg (muxing.c) i got following error's error C1189: #error : missing-D__STDC_FORMAT_MACROS /#define _STDC_FORMAT_MACROS 2 IntelliSense: #error directive: missing -D__STDC_FORMAT_MACROS / #define __STDC_FORMAT_MACROS c:\\users----\\ffmpeg\\ffmpeg\\include\\libavutil\\timestamp.h how to resolve this error i have already done following (...)
• 11:26
  Any good library of ffmpeg in python to encode mp4/mp3 files into HLS/m3u8 - mrlonely Newest 'ffmpeg' Questions - Stack Overflow
  I want to build a system to encode mp4/mp3 files and convent it into m3u8 links. So that it can be played smoothly on mobile app.

Revisions : SPIP http://core.spip.org/projects/spip/activity

• 10:00
  Révision 23624: Notice PHP en moins lors de l’utilisation de la recherche sur le «plongeur» (séle... - marcimatⓐrezo.net Revisions : SPIP
  Petite réorganisation de ce code pour éviter de lancer les 3 requêtes si on sait qu’il n’y aura pas de résultat au passage.

Revisions : notifications http://zone.spip.org/trac/spip-zone/log/_plugins_/notifications

• 08:52
  Revision 105007: oups pas touche à facteur et notifications - jlucⓐ… Revisions : notifications
  oups pas touche à facteur et notifications -- Log
• 08:40
  Revision 105006: v0.6 : le plugin 'visiteur' devient 'macrosession' et #_VISITEUR devient ... - jlucⓐ… Revisions : notifications
  v0.6 : le plugin 'visiteur' devient 'macrosession' et #_VISITEUR devient #_SESSION etc -- Log

Newest 'ffmpeg' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/ffmpeg

• 09:04
  Using Node.js module fluent-ffmpeg to convert video but my files end up corrupt - El Guapo Newest 'ffmpeg' Questions - Stack Overflow
  i am writing a node based media encoding tool and have found a few good node packages that will help me to do this, but the output files are either totally corrupt or it only encodes half the video. The main node package i am using is fluent-ffmpeg, and i am trying it with the following code: var ffmpeg = require('fluent-ffmpeg'); var proc = new ffmpeg( source: 'uploads/robocop-tlr1_h480p.mov', nolog: false) .withVideoCodec('libx264') .withVideoBitrate(800) .withAudioCodec('libvo_aacenc') .withAudioBitrate('128k') .withAudioChannels(2) .toFormat('mp4') .saveToFile('output/robocop.mp4', (...) -- fluent-ffmpeg
• 08:57
  Concatenate four MP4 video files using FFmpeg - GTAVLover Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to concatenate four MP4 video files using FFmpeg. (latest version) Those four mp4 videos differ from general mp4 videos and have specific codecs, I play them in Windows Media Player with the help of K-Lite Mega Codec Pack 13.1.0. Codec information of one file (all four files have same codecs) by MediaInfo: General Complete name : Testing - 1.mp4 Format : MPEG-4 Format profile : Base Media Codec ID : isom (mp41/avc1) File size : 59.4 MiB Duration : 3 min 47 s Overall bit rate mode : Variable Overall bit rate : 2 196 kb/s Writing application : vlc 2.2.4 stream output Comment : (...)
• 08:20
  FFmpeg on Android with Rubberband - Eli Newest 'ffmpeg' Questions - Stack Overflow
  When I try to link librubberband.a I get: libavfilter/af_rubberband.c:236: error: undefined reference to 'rubberband_set_pitch_scale' I compiled rubberband for armv7a, and created a static library (rubberband.a). I checked the library, and It contained the needed symbols (using nm). I verified that librubberband.a is in the libpath (-L) I verified that extern C exists in the rubberband.c.h file. Any ideas?
• 07:52
  ffmpeg: overlay an image onto the slideshow video - user3011750 Newest 'ffmpeg' Questions - Stack Overflow
  But the overlay image is missing in the last frame of output.mp4: http://img.alicdn.com/tfscom/TB10xkvRVXXXXbsXFXXXXXXXXXX.mp4. why? curl 'http://g-search1.alicdn.com/img/bao/uploaded/i4/i2/TB1N_q_PFXXXXbQXpXXXXXXXXXX_!!0-item_pic.jpg_600x600.jpg' \\ 'http://g-search3.alicdn.com/img/bao/uploaded/i4/i1/TB19v.HRpXXXXXoaFXXXXXXXXXX_!!0-item_pic.jpg_600x600.jpg' \\ 'http://g-search1.alicdn.com/img/bao/uploaded/i4/i3/TB1FRQ.QVXXXXcKaXXXXXXXXXXX_!!0-item_pic.jpg_600x600.jpg' | ffmpeg -y\\ -r 0.5\\ -i -\\ -i 'http://img.alicdn.com/imgextra/i4/736964067/TB2iyz9fXXXXXX3XXXXXXXXXXXX-736964067.jpg'\\ (...) -- http://img.alicdn.com/tfscom/TB10xkvRVXXXXbsXFXXXXXXXXXX.mp4
• 07:51
  Merge selected separate video's and put the variable into a ffmpeg merge command - Fearhunter Newest 'ffmpeg' Questions - Stack Overflow
  I am using the following method to cut a stream in pieces and save mp4 files on my harddisk. Method: public Process SliceStream() var url = model.Url; var cuttime = model.Cuttime; var output = model.OutputPath; return Process.Start(new ProcessStartInfo FileName = "ffmpeg.exe", Arguments = $"-i \\"url\\" -c copy -flags +global_header -f segment -segment_time \\"cuttime\\" -segment_format_options movflags=+faststart -reset_timestamps 1 \\"output\\"", UseShellExecute = false, RedirectStandardOutput = true ); The var variables are the user's inputs on the front-end. This method is working (...)
• 07:39
  execute ffmpeg command in node script - varun_nagar Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to execute following node script on win64 env, have node version v6.11.0. but it gives me node error: "child process exited with code 3221225781". var child_process = require('child_process'); (function recordVideo() var spawn = child_process.spawn; var args = ['-f', 'gdigrab', '-show_region', '1', '-video_size', 'cif', '-offset_x', '100', '-offset_y', '100', '-i', 'desktop', 'out.mp4'] var ffmpeg = spawn('ffmpeg', args); ffmpeg.stdout.on('data', function (data) console.log(data); ); ffmpeg.stderr.on('data', function (data) console.log('grep stderr: ' + data); ); (...)
• 06:46
  Create audio file with many audio chunks (WAV) using ffmpeg or sox - Jacopo Vichi Newest 'ffmpeg' Questions - Stack Overflow
  I'm searching on a method that can help me creating an audio file (of known length) composed by mixing some audio chunks at specific time position. For example: I want to create song.wav with duration of 5 minutes, composed by: - chunk1.wav (time 0:02) - chunk3.wav (time 0.50) - chunk2.wav (time 1:20) I think I can create 5 minutes of silence then mixing the wave files but I don't know how. I try SOX but no solution found yet I'd like also FFMPEG based (...)
• 05:23
  Opening video from file using OpenCV in Python - Noise in the street Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use OpenCV2 with my Conda environment for Python 2.7. My installation was basically the same as what was described in this question. I retrieved OpenCV like so: conda install --channel https://conda.anaconda.org/menpo opencv3 I can import the library cv2 and print the version, which is 3.1.0. So far so good. I can even load an image and display it: import cv2 img = cv2.imread('desertfloor.jpg') cv2.imshow('foo',img) cv2.waitKey(0) cv2.destroyAllWindows() This works just fine. But when I go to load a video in the same directory: vid = cv2.VideoCapture('bbb.avi') # Big (...)
• 05:08
  Compression of a video with constant background - Spirou003 Newest 'ffmpeg' Questions - Stack Overflow
  (sorry if my english is bad, I can read it but I don't write it quite well...) I want to compress some videos, which have two particularities: there is a background that covers ~90% of the area, during the whole video most of the others elements can be separately described by a picture in move My videos are like this one, and don't have audio. As you can see, almost everything can be described only by using a fixed background, few small images in move, plus a noise. Moreover, this noise will be almost nul and then an entropic coding would be very efficient. I think it will produce tiny (...) -- this one, another example
• 01:59
  Slideshow video created by ffmpeg with scale+pad+vstack filters only contains one image - user3011750 Newest 'ffmpeg' Questions - Stack Overflow
  $ ls -1 *.jpg 1.jpg # could be any size, here is 210×315 2.jpg # could be any size, here is 480x480 3.jpg # could be any size, here is 480x480 $ ls -1 *.png bg.png # 480x160 $ ffmpeg -y -r 0.5 -pattern_type glob -i '*.jpg' -i bg.png -filter_complex 'scale=iw*min(480/iw\\,480/ih):ih*min(480/iw\\,480/ih),pad=480:480:(480-iw*min(480/iw\\,480/ih))/2:(480-ih*min(480/iw\\,480/ih))/2,vstack' -vsync vfr -c:v libx264 -pix_fmt yuv420p out.mp4 ... $ ffprobe out.mp4 ffprobe version 3.3.2 Copyright (c) 2007-2017 the FFmpeg developers built with Apple LLVM version 8.1.0 (clang-802.0.42) configuration: (...)
• 01:41
  Best approach to real time http streaming to HTML5 video client - deandob Newest 'ffmpeg' Questions - Stack Overflow
  I'm really stuck trying to understand the best way to stream real time output of ffmpeg to a HTML5 client using node.js, as there are a number of variables at play and I don't have a lot of experience in this space, having spent many hours trying different combinations. My use case is: 1) IP video camera RTSP H.264 stream is picked up by FFMPEG and remuxed into a mp4 container using the following FFMPEG settings in node, output to STDOUT. This is only run on the initial client connection, so that partial content requests don't try to spawn FFMPEG again. liveFFMPEG = (...)