26 November

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

• 22:13
  How to use amerge with offset in ffmpeg? - user14706760 Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to get a mono file out of 2 mono files with offset: ffmpeg -itsoffset 2 -i mono1.wav -itsoffset 8 -i mono2.wav -filter_complex [0:a][1:a]amerge out.wav But the result I'm getting is a stereo file without an offset. What do I do wrong?
• 22:12
  Trimming audio using mp4Parser. Or is there any alternative? - user3892282 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to trim an audio using mp4Parser. Is that possible? I tried ffmpeg which is quite time consuming. Our app does require both video and audio processing. Any suggestions on this? -- mp4Parser
• 21:19
  Setting B frames in a video with ffmpeg - roberutsu Newest 'ffmpeg' Questions - Stack Overflow
  According to ffmpeg manual, setting -g is to define space between "I" frames, and setting -bf to use "B" frames. The former I got, but the latter not. The goal: I'm trying to have a video with a GOP 3,12 (M= 3, N=12). That means: 2 "B" frames separating each "P" frames, and "I" frames with 12 frames of distance. Or simply: "IBBPBBPBBPBBI" I think that I got only the N=12, using the commands below: ffmpeg -s cif -r 30 -b 64000 -bt 3200 -g 12 -y -i video.yuv -vcodec mpeg4 video.m4v MP4Box -hint -mtu 1460 -fps 30 -add video.m4v (...) -- http://www2.tkn.tu-berlin.de/research/evalvid/cif.html
• 20:34
  ffmpeg change metadata inside video file - virtualsets Newest 'ffmpeg' Questions - Stack Overflow
  Hello I have problems to change timecode insdie metadata of a video file "mov" ruta=r"E:\\Brutos-sin-eliminar\\inma-ruben-22-2-2020\\multicam\\\\" nombre=r"A019_02230134_C186.mov" comand="ffmpeg -i " + nombre + " -ss 0 -map 0 -acodec copy -vcodec copy -timecode 01:20:10:00 -metadata:s:2:0 timecode=01:20:10:00 -metadata:s:1:0 timecode=01:20:10:00 -metadata:s:0:2 -metadata:s:0:2 timecode=01:10:10:00"+ " convert_" + nombre os.popen(comand) I need to put muy own timecode to the file but this command not works. The console give me mov ⓐ (...)
• 19:01
  How do you get FFMPEG to encode with vaapi? - dicroce Newest 'ffmpeg' Questions - Stack Overflow
  I've seen various examples of using libavcodec with vaapi to accelerated decoding, but how do you use it to accelerate encoding?
• 18:39
  Unrecognized option 'txt_format' in ffmpeg latest version - RecklessSergio Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to convert subtitles from scenarist closed captions(scc) to webvtt(vtt) But I am getting some special characters, so going through ffmpeg documentation https://trac.ffmpeg.org/wiki/ExtractSubtitles I got to know about the option -txt_format. But when I am using it, ffmpeg is throwing an error saying "Unrecognized option 'txt_format'. Error splitting the argument list: Option not found" FFMPEG VERSION : ffmpeg version 4.1.4 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 9.1.1 (GCC) 20190716  (...) -- https://trac.ffmpeg.org/wiki/ExtractSubtitles
• 20:11
  How to include font in FFMPEG command without using the fontfile option? - Avinash Modi Newest 'ffmpeg' Questions - Stack Overflow
  I am using the following command to add watermark in my video using font TIMESNEWROMAN: ffmpeg -i input.webm -vf "drawtext=text='© Krishna':fontfile=C//:/Windows/Fonts/times.ttf:x=(main_w-text_w-10):y=(main_h-text_h-10):fontsize=32:fontcolor=black:box=1:boxcolor=whiteⓐ0.5: boxborderw=5" -preset ultrafast output.mp4 Now, I want to provide the font TIMESNEWROMAN or any other font instead of fontfile path. Is it possible to do (...)
• 18:02
  Ffmpeg hevc motion vectors - Mohit Kumar Newest 'ffmpeg' Questions - Stack Overflow
  Can anyone kindly give a single liner for extracting block motion vectors for hevc with ffmpeg and saving in a text file for upto 4x4 cu sizes. Thanks
• 17:31
  Add audios according to their timestamps with ffmpeg - user14706760 Newest 'ffmpeg' Questions - Stack Overflow
  I tried this: ffmpeg -i first.mka -i second.mka -i third.mka -i fourth.mka -filter_complex "[1]adelay=184000|184000[b]; [2]adelay=360000|360000[c]; [3]adelay=962000|962000[d]; [0][b][c][d]amix=4" merged.mka But it turned out that amix scales each input's volume by 1/n where n = no. of active inputs. A normalization workaround is unacceptable in my case because I have hundreds of inputs. Is the any alternative way to add audio files according to their (...)
• 16:51
  TCP Connection refused error when using FFMPEG for audio stream to HTTP on macOS - freddy Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to stream my microphone input via HTTP using ffmpeg, so I can stream it in HTML. I run the following ffmpeg command: ffmpeg -f avfoundation -i ":1" -c:a libmp3lame -f mp3 -r 30 http://localhost:809 It, however, crashes with the following error message: ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers built with Apple clang version 12.0.0 (clang-1200.0.32.27) configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_4 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= (...)

Newest 'x264' Questions - Stack Overflow http://stackoverflow.com/questions/tagged/x264

• 16:43
  Frame sliced into 2 under some degree. How fix it? - Алекс Аникей Newest 'x264' Questions - Stack Overflow
  I trying use h264 codec in videochat application. And in some reason frame sliced into 2 triangle (picture below). I try send my desktop image to another person and get this image on another client. What settings i set wrong? My code: Init: VCSession *vc_new_x264(Logger *log, ToxAV *av, uint32_t friend_number, toxav_video_receive_frame_cb *cb, void *cb_data, VCSession *vc) if (x264_param_default_preset(&param, "slow", "zerolatency") h264_enc_width = param.i_width; vc->h264_enc_height = param.i_height; param.i_keyint_max = (...) --

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

• 15:26
  FFmpeg encoding aac audio, encoded file can not be played - cs guy Newest 'ffmpeg' Questions - Stack Overflow
  Sorry for the long code but thats just how FFmpeg works. I am trying to encodea aac audio. Example of MP2 here. I followed this documentation. I encode the audio with the code below by calling startEncoding and after 2 seconds I call stopEncoding, keep in mind that the buffer is being filled from another thread. Everything seems to work fine, but sometimes the output file is 0 bytes, even if it has some size for example I get an file with 462KB size but the problem is I can not open or play it. I dont know why. I must be doing something wrong in the code. I have been trying to fix (...) -- Example of MP2 here
• 14:44
  ffmpeg How to get PCM floats from AVFrame with AV_SAMPLE_FMT_FLT - cs guy Newest 'ffmpeg' Questions - Stack Overflow
  I have an AVFrame obtained through a decoder that has a format of AVSampleFormat::AV_SAMPLE_FMT_FLT. My issue is I want to convert the data stored inside avFrame->data; // returns uint8_t * to Array of floats that are between [-1, +1]. I see that avFrame->data; returns uint8_t * how may I use this to obtain the float pcm data for each channel of the audio? I tried the following: auto *floatArrPtr = (float *)(avResampledDecFrame->data[0]); for (int i = 0; i nb_samples; i++) // TODO: store interleaved floats somewhere  (...)
• 14:34
  FFmpeg HLS select streams and only retrieve their data - M.S. Newest 'ffmpeg' Questions - Stack Overflow
  Opening a HLS stream using avformat_open_input retrieves data from all streams and I would like to only retrieve data from some of them. Is that possible? Consider the following MWE: #include int main(int argc, char **argv) AVFormatContext *inFmtCtx = NULL; AVPacket packet; const char *inUrl; int ret; if (argc Using the example HLS url "http://mcdn.daserste.de/daserste/de/master.m3u8" (might be geolocked), the printf returns values between 0 and 9, indicating that all 10 streams (5 video, 5 audio) are retrieved. Of course, one (...)

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

• 15:36
  avfilter/af_acrossover: add missing allpass processing - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avfilter/af_acrossover: add missing allpass processing [DH] libavfilter/af_acrossover.c

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

• 13:56
  ffmpeg output images filename with time position and problem with 'not(mod(t' - Дмитрий Мышков Newest 'ffmpeg' Questions - Stack Overflow
  I'd found a such ffmpeg output images filename with time position topic, but have problem with execute that one "ffmpeg -i source -vf fps=1,select='not(mod(t,5))' -vsync 0 -frame_pts 1 z%d.jpg": ffmpeg -i ex.avi -vf fps=1,select='not(mod(t,5))' -vsync 0 -frame_pts 1 z%d.jpg Stream mapping: Stream #0:0 -> #0:0 (mpeg4 (native) -> mjpeg (native)) Press [q] to stop, [?] for help [Parsed_select_1 ⓐ 0x7f96ee6024c0] [Eval ⓐ 0x7ffee72d67d0] Missing ')' or too many args in 'mod(t' [Parsed_select_1 ⓐ 0x7f96ee6024c0] Error (...)
• 12:08
  Feed HLS stream via FFmpeg (libavformat) as mpegts into GStreamer appsrc - M.S. Newest 'ffmpeg' Questions - Stack Overflow
  Due to some problems in GStreamers HLS code, I would like to use libavformat/FFmpeg to retrieve the stream and feed my GStreamer pipeline using an appsrc element. While I was able to achieve this in a hacky way by outputting FFmpeg to a pipe and using fdsrc to feed data into the GStreamer pipeline from that pipe, I wonder if I can circumvent that and directly feed the data to appsrc. I assume that I can actually use the packet that is retrieved by av_read_frame, but as only the input streams are referenced, I assume that the packet/data is not already remuxed in an (...)

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

• 13:13
  avfilter/af_acrossover: add missing inverter as last step - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avfilter/af_acrossover: add missing inverter as last step [DH] libavfilter/af_acrossover.c
• 11:53
  avfilter/af_acrossover: simplify coefficients - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avfilter/af_acrossover: simplify coefficients [DH] libavfilter/af_acrossover.c
• 11:19
  avfilter/af_acrossover: add even more orders - Paul B Mahol git.videolan.org Git - ffmpeg.git/rss log
  avfilter/af_acrossover: add even more orders [DH] doc/filters.texi [DH] libavfilter/af_acrossover.c

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

• 11:14
  ffmpeg-python wrapper ffmpeg.run() getting FILENOTFOUNDERROR - Gerald Leese Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to figure out and learn how to use the ffmpeg-python wrapper and am getting a file not found error. both the mp4 file I'm trying to process and the python file are both in a folder on my desktop. I'm not sure if I'm using it correctly here. I'm running windows 10 32bit, python 3.6 and have ffmpeg-python 0.16.0 installed. Is there additional packages I need installed in order for this to work? I tried the same code on my 64 bit windows 10 desktop and got the same error. import ffmpeg videoInput = (...)
• 11:00
  Why images are combined (ffmpeg)? - Jin X Newest 'ffmpeg' Questions - Stack Overflow
  I want to create video from images (one image per frame). ffmpeg -framerate 21.533 -i %d.bmp -i z.wav -r 21.533 -t 120 -map 0:v:0 -map 1:a:0 -c:v libx265 -c:a aac -b:a 128k z.mp4 When I watch resulting video I see (at least at the end of video) that frames are combined with each other (2 images on each frame overlaps with different transparency ratio). I seems like when source and destination frame rate mismatch. I can remove -framerate and -r options but result will be the same (with 25 fps). What's the problem? How to fix (...)
• 11:00
  Video Spec to fluent-FFMPEG settings - Dean Van Greunen Newest 'ffmpeg' Questions - Stack Overflow
  Not sure how to translate this video spec into fluent-FFmpeg. please assist. This is the only video I have that plays on my iPhone, and I would like to reuse the video's encoding to allow other videos I have, to be converted into the same video format. resulting in having my other videos playable via iPhone and iOS. (this also happens to play on android, I would like the recommended encoding settings to also work on android) The video should also be streamable, I know theres a flag called +faststart but not sure how to use it.  (...) --
• 10:34
  Overlays with subtitle with multiple text in ffmpeg - Konduri Sai Aditya Newest 'ffmpeg' Questions - Stack Overflow
  I have the following query. please find images I have two inputs one is bg.png,( background-color), another one is baby webm with two texts one is "Double click to edit" which back of baby.webm and other "adi" which overlayed on baby.webm My command is ffmpeg -loop 1 -i bg.png -vcodec libvpx-vp9 -stream_loop -1 -i baby.webm -y -filter_complex "[0]subtitles=subs.ass:fontsdir=/fonts/Dancing_Script.ttf[sub];[1:v]scale=1076:606[scale1];[scale1]rotate=0:c=blackⓐ0:ow=rotw(0):oh=roth(0)[rotate1];[sub][rotate1]overlay=x=684.57:y=357.98,subtitles=subs.ass:fontsdir=/fonts/Times_New_Roma
• 10:11
  Record video with Accord.net (AForge) - ghasem deh Newest 'ffmpeg' Questions - Stack Overflow
  I used Accord.net (AForge) for connect to the webcam and record video But stored videos is slow motion ... this my project : using AForge.Video; using AForge.Video.DirectShow; using AForge.Video.FFMPEG; using System; using System.Drawing; using System.IO; using System.Threading; using System.Windows.Forms; namespace CaptureWebcam public partial class Form1 : Form private VideoCaptureDeviceForm captureDevice; private string path = Path.GetDirectoryName(Application.ExecutablePath) + ⓐ"\\Videos\\";  (...)

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

• 11:46
  doc/filters: fix typo in overlay_cuda - Gyan Doshi git.videolan.org Git - ffmpeg.git/rss log
  doc/filters: fix typo in overlay_cuda [DH] doc/filters.texi

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

• 09:25
  Anomalie #4345: super_cron HS en https - jluc - Revisions : SPIP
  Le bug des ports a été corrigé, mais je confirme la nécessité d'ajouter un timestamp dans l'url pour ne pas permettre à varnish de servir un plat froid - du moins sur ma config de serveur.

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

• 08:49
  Crossfade Animation with multiple Images using Ffmpeg - Vivek Thummar Newest 'ffmpeg' Questions - Stack Overflow
  I'm creating video with Multiple images using Ffmpeg and i'm referencing given link - (Remember most important thing is All the images have different sizes) https://superuser.com/a/834035/1243959 Now First of all i'm creating video with fade in/out animation and for that i'm using 3rd code with title For input images with varying or arbitrary sizes and it works well - ffmpeg \\ -loop 1 -t 5 -i input0.png \\ -loop 1 -t 5 -i input1.png \\ -loop 1 -t 5 -i input2.png \\ -loop 1 -t 5 -i input3.png \\ -loop 1 -t 5 -i input4.png (...)
• 08:42
  Output both m3u8 and segment files to stream - DrNickEgg Newest 'ffmpeg' Questions - Stack Overflow
  This is likely a small fix but I am trying to read an .mp4 file from a download stream and convert it to HLS. I created a write stream to output the conversion. I am using google cloud storage to get the read/write streams. The problem is, the segments are not streamed and are exported locally, while the .m3u8 file is sent properly via the pipe. Is there a way to stream both the .ts and .m3u8 playlist to my pipe output, so nothing gets exported locally? const readStream = gcp.bucket().file('video.mp4').createReadStream(); const outputStream = (...)
• 05:09
  FFMPEG - Multi Track, Multi Channel file to discrete mono files - vade Newest 'ffmpeg' Questions - Stack Overflow
  I have files which are multi track, and multi channel (ie, track 1 may be 5.1, track 2 may be stereo, track 3 may be stereo etc) I am looking to output every channel from every track into its own 'unrolled' discrete mono file. example media: ffprobe version 4.3.1-0york0~18.04 Copyright (c) 2007-2020 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04) configuration: --prefix=/usr --extra-version='0york0~18.04' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl (...)
• 04:04
  FFMPEG : Invalid data found when processing input - Schüler Newest 'ffmpeg' Questions - Stack Overflow
  I am unable to upload mp3 or mp4 is there any specific path format? Here is my code. I have tried this also ffmpeg -i Video/" + Name + " -ss 01:30 -r 1 -an -vframes 1 -f mjpeg Video/" + Name + ".jpg exec("ffmpeg -y -i Video/" + Name + " -map_metadata -1 -ab 192k Video/" + Name + ".jpg", function(err) if (err) console.log(err) console.log('Done', 'Image' : 'Video/' + Name + '.jpg'); ); Here is the error Error: Command failed: ffmpeg -y -i (...)
• 03:34
  How to use streams with FFMPEG and Node - Pedro Dalla Newest 'ffmpeg' Questions - Stack Overflow
  I am interested in using ffmpeg with node. I have looked at the many libraries available (such as fluent-ffmpeg), but they are not what I'm looking for. I would like to know if there is a way to execute FFMPEG with node, but instead of creating a file, transfering everything to a stream. I don't want to use disc space for 'reasons' and it would make more sense for my application to execute a command and pipe that audio/video into a node stream instead. Is there a way to do this? If so, what's my best (...)