6 December

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

• 17:03
  lavc/cbs_h2645: Fix incorrect max size of nalu unit - Andriy Gelman git.videolan.org Git - ffmpeg.git/rss log
  lavc/cbs_h2645: Fix incorrect max size of nalu unit In the worst case the startcode prefix has 4 bytes. This fixes a trigerred assertion: Assertion dp <= max_size failed at libavcodec/cbs_h2645.c:1451 Found-by:libFuzzer Reviewed-by: Andreas Rheinhardt <andreas.rheinhardtⓐgmail.com> Signed-off-by: Andriy Gelman <andriy.gelmanⓐgmail.com> [DH] libavcodec/cbs_h2645.c

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

• 18:57
  lower latency LAN video streaming to Android? - LargeMoneyBanks Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to stream desktop video from windows to an Android device on the same network, but seeing huge latency even streaming windows to windows. Technically streaming to a unity game using this asset that doesnt support udp but DOES support HTTPS,HTTP,HLS,RTSP,RTMP. https://assetstore.unity.com/packages/tools/video/ump-android-ios-56044 With some help from a friend I am using ffmpeg for capture, encoding, and streaming with this command: .\\ffmpeg -threads 8 -f gdigrab -framerate 60 -i desktop -c:v libx264 -refs 3 -g 60 -loglevel debug -pix_fmt yuv420p -slices 8 -an -preset (...) -- https://assetstore.unity.com/packages/tools/video/ump-android-ios-56044
• 18:37
  What parameters are necessary in FFMPEG to stream (HLS) to modern Android devices? - steven Newest 'ffmpeg' Questions - Stack Overflow
  I want to convert a regular video file (MP4 x264) to HLS to be streamed on Android devices using ffmpeg. I have an html5 player setup to play the HLS stream (m3u8) and have tested it on Chrome and Firefox desktop browsers and everything works fine. The issue is that the same exact player and m3u8 playlist does not work on Android Chrome and Android Firefox (both give an unsupported file type error). At first I thought it may be an issue with the html5 player and HLS support, so I took a random m3u8 playlist stream from a quick google search, and of course that stream worked fine in my (...)
• 18:06
  ffmpeg dash/hls wrong timestamp when using mp4, -ss, and -copyts - user2114284 Newest 'ffmpeg' Questions - Stack Overflow
  I have noticed some inconsistencies with the output timestamp when using ffmpeg with the dash/hls muxers with mp4, -ss, and -coptyts and I am wondering if it is a bug or if I am just misunderstanding something about how ffmpeg is supposed to work. Here I seek 15 seconds in the input and use the copyts argument to copy the input timestamp: However, when checking the output with ffprobe, it shows the timestamps starting at 30 seconds, double what I would expect: ffmpeg -ss 15 -i big_buck_bunny_720p_10mb.mkv -to 30 -copyts -acodec aac -vcodec libx264 -f hls -hls_time 2 -hls_init_time 2 (...)
• 17:07
  ffmpeg: Audio input device not recognized - shrimpwidget Newest 'ffmpeg' Questions - Stack Overflow
  What is needed for my ffmpeg command to recognize my audio input device? The following reference has not helped resolve my problem: enter link description here I want to record me talking (to my Windows laptop) while my screen activity is captured. While I have succeeded in capturing what's on the screen (by removing all mention of audio from my command), I have been unable to capture audio, as the device I mention is not recognized by ffmpeg. (I routinely use the default laptop for audio input to Audacity...surely there's some way to use it in this ffmpeg command, too.) My audio (...) -- enter link description here
• 16:39
  NGINX FFmpeg without Lua - Synergy Zarka Newest 'ffmpeg' Questions - Stack Overflow
  I need to execute a one-line ffmpeg script and return the result to the requester using NGINX as the server. I'm familiar with both, but I can't seem to figure out how to to run that line in an NGINX configuration block without installing the Lua module, which I can't do as I don't have NGINX Plus. Does anyone know how to run a one-line FFmpeg script for a specific route in NGINX?
• 14:55
  FFMPEG Input area failure - Mike Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert an input clip to a fixed, padded output and applying an overlay on it. This command works fine for resizing: ffmpeg -y -i clip.mp4 -vf scale="min(iw*375/ih\\,500):min(375\\,ih*500/iw),pad=500:375:(500-iw)/2:(375- ih)/2" output.mp4 I created the following one to make sure the overlay would be created: ffmpeg -y -i clip.mp4 -i clip_overlay.png -strict -2 -filter_complex "[0]scale=min(iw*375/ih\\,500):min(375\\,ih*500/iw),pad=500:375:(500-iw)/2:(375-ih)/2[v];[v][1]overlay=x=W-w-5:y=H-h-5" output.mp4 I cannot find the error, but ffmpeg returns: [Parsed_pad_1 ⓐ 0x2eae8e0] (...)
• 13:09
  Extract Quantization Parameter for individual frames of h.26x video using ffmpeg - ndtreviv Newest 'ffmpeg' Questions - Stack Overflow
  If I execute a command like this: $ ffmpeg -i video.mp4 -qphist -vf codecview=qp=true video_qp.mp4 I get the QP histogram of averages across frame types, like so: [libx264 ⓐ 0x7f8386803c00] frame I:5 Avg QP:21.65 size: 5960 [libx264 ⓐ 0x7f8386803c00] frame P:172 Avg QP:23.90 size: 3449 [libx264 ⓐ 0x7f8386803c00] frame B:204 Avg QP:26.77 size: 1168 I want to extract the QP for each individual frame in the video, rather than get overall averages. Is there a way to do this with (or even without, actually) ffmpeg or associated tools (such as (...)
• 12:59
  Decode video with FFMPEG using Webassembly [closed] - Fernando Newest 'ffmpeg' Questions - Stack Overflow
  I would like to decode RAW H264 Chunks within the Browser using FFMPEG compiled with Webassembly. These H264 Chunks will come from a remote peer that is transmitting them with WebRTC. How can I send packets and get the decoded frame in a Canvas?

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

• 00:07
  avcodec/mvha: Check remaining space when reading VLC table probabilities - Michael Niedermayer git.videolan.org Git - ffmpeg.git/rss log
  avcodec/mvha: Check remaining space when reading VLC table probabilities Fixes: Infinite loop Fixes: 19183/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MVHA_fuzzer-5666216765292544 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemdaⓐgmail.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libavcodec/mvha.c

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

• 10:05
  ffmpeg converting mp4 to gif with color palette results in truncated video - Tik0 Newest 'ffmpeg' Questions - Stack Overflow
  I want to generate a gif from my mp4 movie with ffmpeg (ffmpeg version 2.8.15-0ubuntu0.16.04.1) using a color palette. Everything works fine if I do not use a palette: $ ffmpeg -i in.mp4 -filter_complex "scale=160:-1" out.gif ... frame= 2003 fps=251 q=-0.0 Lsize= 21172kB time=00:01:20.12 bitrate=2164.7kbits/s video:21155kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.077667% But using a palette like so results in Buffer queue overflow, dropping messages and a truncated video $ ffmpeg -i in.mp4 -filter_complex "[0:v] scale=160:-1, split [a][b];[a] (...)
• 09:58
  Loss less conversion using FFMPEG in react native while adding logo to video - Rishav Kumar Newest 'ffmpeg' Questions - Stack Overflow
  I am using RN-FFMPEG to embed a thumbnail in a video using FFmpeg. The problem is that the video quality is highly deteriorated while adding a logo. Also, the issue is logo gets highly stretched and distorted in landscape videos but works great in portrait video. Can someone help me to have a max-width and max-height to the watermark along with high processing time with lossless conversion? RNFFmpeg.execute('-i ' + video + ' -i ' + logo +' -filter_complex overlay=main_w-overlay_w-25:main_h-overlay_h-25 -codec:a copy /storage/emulated/0/ABC/ABC-' + name + '.mp4') This is my FFMPEG code (...)
• 09:18
  how to convert multiple .dav files in a directory to .mp4 - pgp Newest 'ffmpeg' Questions - Stack Overflow
  I have a bunch of .dav files in a directory, need to convert all the files in the directory to .mp4 format. I'm on Linux btw, so looking for a commandline option preferably
• 07:55
  Render SharpDX Texture2D in UWP application - Alex Newest 'ffmpeg' Questions - Stack Overflow
  I'm implementing a solution for hardware-accelerated H264 decoding and rendering in the UWP application. I want to avoid copying from GPU to CPU. The solutions consists of 2 parts: C library that decodes the H264 stream using ffmpeg UWP/C#/SharpDX application to receive encoded data, pinvoke library and then render decoded frames. I receive encoded data in the C# application and send it to the C library to decode and get the pointer to the frame back using pinvoke. C part looks good so far. I managed to receive pointer to the decoded frame in GPU in the C library: // ffmpeg decoding (...)
• 06:12
  Convert chapters from xml to ffmetadata? - Soul Spark Newest 'ffmpeg' Questions - Stack Overflow
  I wanted to add chapters to my encoded mkvs, but I get *.xml files when I download it from online. So is there any way to convert it to FFMETADATAFILE so that when I encode it using ffmpeg I can add chapters to my mkv?? Sample Input --> - - 1 0 - 95534594 00:00:00.000000000 00:01:30.000000000 0 1 - Chapter 1 und Sample Output ;FFMETADATA1 title=bike\\\\shed ;this is a comment artist=FFmpeg troll team [CHAPTER] TIMEBASE=1/1000 START=0 #chapter ends at 0:01:00 END=60000 title=chapter \\#1 [STREAM] title=multi\\ line By the way I use ffmpeg in cli mode (...)
• 06:00
  Ffmpeg Multiple Crop - megaimd mega Newest 'ffmpeg' Questions - Stack Overflow
  How can I make crop in and out from 3 to 3 seconds to a video. for Exemple: The First 3 sec Of the video to be original, The next 3 sec of the video to be CROP crop=iw-684:ih-516,scale=1280:720 The next 3 sec Of the video to be original, The next 3 sec of the video to be CROP crop=iw-684:ih-516,scale=1280:720 so on, until the end of the video Please Help Me
• 03:41
  Download TS files from video stream - Nicky Smits Newest 'ffmpeg' Questions - Stack Overflow
  Videos on most sites make use of progressive downloading, which means that the video is downloaded to my computer, and easy to trace. There are lots of extensions out there to do this, and even in the dev-tools this is easily done. On certain websites videos are streamed. which means that we do no just download 1 file, we download lots of small packages. In the dev-tools these packages can be traced. The website I'm interested in is: http://www.rtlxl.nl/#!/goede-tijden-slechte-tijden-10821/c8e2bff7-5a5c-45cb-be2b-4b3b3e866ffb. The packages have a .TS extension. Packages can be saved by (...) -- http://www.rtlxl.nl/#!/goede-tijden-slechte-tijden-10821/c8e2bff7-5a5c-45cb-be2b-4b3b3e866ffb
• 02:32
  FFmpeg on android is crashing in ff_h2645_extract_rbsp function - TheWindLaugh Newest 'ffmpeg' Questions - Stack Overflow
  I have used ffmpeg decode in my decode2 function,it just like this: AVPacket pkt; av_init_packet(&pkt); pkt.data = (uint8*)vd+16; pkt.size = vl-16; m_is_decoding = true; avcodec_send_packet(m_cctx, &pkt); int ret = avcodec_receive_frame(m_cctx, m_cfrm); Everything works great up until the avcodec_decode_video2 call: Build fingerprint: 'HUAWEI/VTR-AL00/HWVTR:9/HUAWEIVTR-AL00/9.1.0.201C00:user/release-keys' Revision: '0' cpuAbi/cpuAbi2: 'arm64-v8a#armeabi-v7a#armeabi' pid: 5829, tid: 6106, name: .myapp.online >>> com.myapp.online ::decode2(void*, yuv_r*, void const*, int)+1384) #07 (...)

5 December

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

• 04:10
  libswscale/swscale_unscaled.c: remove redundant code - Ting Fu git.videolan.org Git - ffmpeg.git/rss log
  libswscale/swscale_unscaled.c: remove redundant code Signed-off-by: Ting Fu <ting.fuⓐintel.com> Signed-off-by: Michael Niedermayer <michaelⓐniedermayer.cc> [DH] libswscale/swscale_unscaled.c
• 10:02
  avutil/buffer: use appropriate atomic operations - Zhao Zhili git.videolan.org Git - ffmpeg.git/rss log
  avutil/buffer: use appropriate atomic operations No functional changes. ref/unref vs add/sub is symmetrical. Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] libavutil/buffer.c

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

• 17:35
  I want my video to crop 720x480 2s then serial crop 5s 1280x720 and so on until the end of the video. The output is a single video. ffmpeg [closed] - SON PHAN VAN Newest 'ffmpeg' Questions - Stack Overflow
  My input is a 1920x1080 video. I want my video to crop 720x480 2s then serial crop 5s 1280x720 and so on until the end of the video. The output is a single video. What should I do with the ffmpeg command.
• 21:53
  Applying video filters on MPEG Dash segments - michalSolarz Newest 'ffmpeg' Questions - Stack Overflow
  I know that it will probably require recreating whole MPEG Dash stream but I'm curious if is it possible to apply a drawtext video filter on existing Dash segments? I I've managed to merge segments with init MP4 and apply that filter on it but I've no idea how and if it is possible to recreate MP4 segment similar to input one, fragmented and with only media data as input one?
• 21:07
  Watermarking chunks od MPEG Dash stream - michalSolarz Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to apply a drawtext video filter on existing Dash segments? I've managed to merge segments with init MP4 and apply that filter on it but I've no idea how and if it is possible to recreate MP4 segment similar to input one, fragmented and with only media data as input one?
• 20:38
  FFmpeg watermark directory instead of single video - Matt Newest 'ffmpeg' Questions - Stack Overflow
  This code is working fine to watermark a single video at one time. What my question is, how would I modify this code to watermark and entire directory (*.mp4) instead of just a single video. Ideally after the watermark is done and output it would keep the same file name. To me this would be easier than having to have to do a single video at a time and just have ffmpeg do an entire directory. Thank you for your help. ffmpeg -i /Users/matth/OneDrive/Desktop/Raw_videos/video01.mp4 -i /Users/matth/OneDrive/Desktop/Raw_videos/watermark.png -filter_complex overlay=W-w-5:H-h-5 -codec:a copy (...)
• 20:14
  How to drawtext colon with pts gmtime using ffmpeg? - Milan Tejani Newest 'ffmpeg' Questions - Stack Overflow
  I am adding timestamp to video using FFMPEG where i am using below command: ffmpeg -y -i input.mp4 -vf "drawtext=fontfile=roboto.ttf:fontsize=36:fontcolor=yellow:text='%pts\\:gmtime\\:1575526882\\:%d/%m/%y %H:%M'" -preset ultrafast -f mp4 output.mp4 in this command i am using : between %H and %M in text attribute of drawtext text='%pts\\:gmtime\\:1575526882\\:%d/%m/%y %H:%M' because i want to print time like this 06:25 it show me this error: Unterminated % near 'pts:gmtime:1575526882:%d/%m/%y %H' how can i print : between %H and %M where %H is for hours and %M is for (...)
• 19:32
  How to include constrast+saturation filter after vidstabtransform? - esdoublelef Newest 'ffmpeg' Questions - Stack Overflow
  In a previous question, I got help in fixing the code as stated below. However, I realize that my output file is slightly lower in contrast and saturation. Is there any way to append a contrast+saturation filter to the output stabilized file? '" ⓐFor %%A In (*.mov)Do ⓐ( ffmpeg -i "%%A" -vf vidstabdetect=shakiness=8:accuracy=15:stepsize=6:mincontrast=0.4:show=2 -y -an -f null - ffmpeg -i "%%A" -vf vidstabtransform=smoothing=15:input="transforms.trf":interpol=linear:crop=black:zoom=0:optzoom=1,unsharp=5:5:0.8:3:3:0.4 -vcodec libx264 -tune film -y "%%~nAstabilized.mp4" ) pause (...)
• 19:30
  Which Platform/Language to choose for Video Management System [closed] - Vivek Buddhadev Newest 'ffmpeg' Questions - Stack Overflow
  We have started on a new project, Which enables for the multiple IP cameras(Around 1000 Cameras) to record as well as available for live streaming. Like https://www.security.honeywell.com/uk/product-repository/maxpro-vms Initially, we have tried using ffmpeg commands that saves data in chunks: ffmpeg -i rtsp_url -fflags flush_packets -max_delay 2 -flags -global_header \\ -hls_time 2 -hls_list_size 3 -vcodec copy -y /var/www/html/Cam01.m3u8 Then we have started http server and using node.js we are displaying the stream. But as we are adding more cameras into it, the performance is going (...) -- https://www.security.honeywell.com/uk/product-repository/maxpro-vms
• 19:24
  FFMPEG Add watermark to MP4 - Junaid Farooq Newest 'ffmpeg' Questions - Stack Overflow
  I have this command to add watermark to an mp4 ffmpeg -i junai-blvaz.mp4 -i evercam-logo-white.png -filter_complex "[1]scale=iw/2:-1[wm];[0][wm]overlay=x=main_w-overlay_w-10:y=main_h-overlay_h-10" -codec:a copy output.mp4 But I am creating the video using ffmpeg -r 6 -i /tmp/%d.jpg -c:v h264_nvenc -r 6 -preset slow -bufsize 1000k -pix_fmt yuv420p -y junai-blvaz.mp4 Is there any way to merge this command of adding watermark -i evercam-logo-white.png -filter_complex '[1]scale=iw/2:-1[wm];[0][wm]overlay=x=main_w-overlay_w-10:y=main_h-overlay_h-10' to the very first command through which (...)
• 18:30
  Translating a multiple line terminal command into a single line terminal command - andy stumpf Newest 'ffmpeg' Questions - Stack Overflow
  Does anyone have any direction or suggestion on how to translate this command into a single line command? I need to keep this in a terminal command and no use a shell. Thank you so much for any help and direction. for event in */; do ( echo "$event" cd "$event" for segment in */; do ( cd "$segment" echo "$segment" for f in *-0.ts; do ( echo $f ) done (printf "file '$PWD/%s'\\n" *.ts | sort -n -k1.$(($(printf "file '$PWD/$f'" | wc -c) - 4))) > fraglist.txt ../../ffmpeg -f concat -i fraglist.txt -c copy ../../"$segment[ⓐ]%.hls/.ts" ) done ) done I've tried something like the following but (...)
• 18:25
  How do I set ffmpeg pipe output? - mr_blond Newest 'ffmpeg' Questions - Stack Overflow
  I need to read ffmpeg output as pipe. There is a code example: public static void PipeTest() Process proc = new Process(); proc.StartInfo.FileName = Path.Combine(WorkingFolder, "ffmpeg"); proc.StartInfo.Arguments = String.Format("$ ffmpeg -i input.mp3 pipe:1"); proc.StartInfo.UseShellExecute = false; proc.StartInfo.RedirectStandardInput = true; proc.StartInfo.RedirectStandardOutput = true; proc.Start(); FileStream baseStream = proc.StandardOutput.BaseStream as FileStream; byte[] audioData; int lastRead = 0; using (MemoryStream ms = new MemoryStream()) byte[] buffer = new byte[5000]; do (...)
• 16:49
  Android video stream to windows desktop - Latency Issue - cagney Newest 'ffmpeg' Questions - Stack Overflow
  I am using an android v21 device to stream data to a javafx application. Its working fine but I have about 2 seconds of latency. As of now the basic transportation goes like this android Cameratompegtest.class unkown latency android packetizer(udp) 10 millis windows depacketizer no buildup of data in buffers windows ffmpeg framgrabber unkown latency javafx imageview My data stream to my desktop and my packetizer is much faster than my frame rate and is often just waiting. There is no buildup of data anywhere else and therefore I assume no delay in any of my code. My big question is in (...) -- https://bigflake.com/mediacodec/CameraToMpegTest.java.txt
• 16:25
  How to create a webm video file? - Marneau Newest 'ffmpeg' Questions - Stack Overflow
  After looking over the web project I see no evidence of a way to generate a webm video. I see drivers for Windows and Quicktime, but no evidence that the most common utility ffmpeg is being supported. Is there any open source converter that produces webm?
• 16:10
  Use ffmpeg to encode raw bayer_rggb8 frames as video - DekiChan Newest 'ffmpeg' Questions - Stack Overflow
  I have some industrial camera that records and outputs frames in raw bayer_rggb8 format. Frames are 1920x1080 in size, shot at ~90fps. I wan't to create video from it (format doesn't matter much, but preferably mp4 with x264 encoding). My frames are saved on the filesystem as frame-00001.raw, frame-00002.raw etc. Every now and then there's empty file. I can convert single image to say PNG with the following command: ffmpeg -f image2 -c:v rawvideo -pix_fmt bayer_rggb8 -s:v 1920x1080 -i frame-00400.raw output.png But when I try to encode it as video with the following command: ffmpeg -f (...)
• 15:18
  C++ ffmpeg video missing frames and won't play in Quicktime - Oliver Dain Newest 'ffmpeg' Questions - Stack Overflow
  I wrote some C++ code that uses ffmpeg to encode a video. I'm having two strange issues: The final video is always missing 1 frame. That is, if I have it encode 10 frames the final video only has 9 (at least that's what ffprobe -show_frames -pretty $VIDEO | grep -F '[FRAME]' | wc -l tells me. The final video plays fine in some players (mpv and vlc) but not in Quicktime. Quicktime just shows a completely black screen. My code is roughly this (modified a bit to remove types that are unique to our code base): First, I open the video file, write the headers and initialize things: template (...)
• 14:11
  ffmpeg av_parser_parse2 warnings and reading failure - audi02 Newest 'ffmpeg' Questions - Stack Overflow
  I try to read a video for saving its frames as images, and followed the code in example decode_video.c given at https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/decode_video.c I use libs and dlls for ver 4.2.1 I found that calling av_parser_parse2 prints the follow warnings: [h264 ⓐ 000002b421e86040] AVC-parser: nal size 1836019574 remaining 4064 [h264 ⓐ 000002b421e86040] SEI type 116 size 968 truncated at 168 [h264 ⓐ 000002b421e86040] Invalid NAL unit size (1836019574 > 4064). [h264 ⓐ 000002b421e86040] missing picture in access unit with size 4096 Then, when proceeding to (...) -- https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/decode_video.c
• 13:07
  How to create movie screenshot by ffmpeg in an amazon S3 path - user2004082 Newest 'ffmpeg' Questions - Stack Overflow
  I tried to create using ffmpeg a video screenshot from a remote video url in heroku console. Below is how I generated a movie instance and can see also an empty ready to be written file at S3. But the last line movie.screenshot is not working and generates this error: FFMPEG::Error: Failed encoding.Errors: no output file created Here is the code s3 = Aws::S3::Resource.new(region: 'us-west-1') bucket = s3.bucket("ruby-sample-kb-#SecureRandom.uuid") bucket.create object = bucket.object('ex-vid-test-kb.jpg') object.put(acl: "public-read-write") path = object.public_url movie = (...)
• 10:40
  Cannot find installation of real FFmpeg (which comes with ffprobe) - Asm Goni Newest 'ffmpeg' Questions - Stack Overflow
  I was trying to fit a generator into a model and I got this error: AssertionError: Cannot find installation of real FFmpeg (which comes with ffprobe). I have looked over many of the solutions on GitHub and other questions on Stack Overflow but none of them worked for me. Here is one of the commands I ran: sudo add-apt-repository ppa:mc3man/trusty-media sudo apt-get update sudo apt-get install ffmpeg sudo apt-get install frei0r-plugins pip list also indicates the presence of ffmpeg-1.4 In addition, I tried force reinstalling and updating ffmpeg just in case any dependencies were not (...)
• 09:55
  How to use the data encoded in AVPacket to fill in RTMP_Packet and send it to RTMP server - DJI_lover Newest 'ffmpeg' Questions - Stack Overflow
  I am currently using ffmpeg to push live streaming, but the effect is not very good, so I want to control the details of librtmp. I know that AVPacket contains encoded data (H264 NAL, but not real NAL). I hope someone can tell me how to fill RTMP_Packet with AVPacket data. I hope there are some reference codes .Thanks!!
• 09:42
  showall equivalent ffmpeg flags in VLC? - vagran Newest 'ffmpeg' Questions - Stack Overflow
  I have a stream which I can play in ffplay using command like this: ffplay -flags2 +showall rtsp://localhost:12345/video Notice -flags2 +showall option which instructs ffplay not to wait until the first keyframe received before start playing. My video does not have ones (I-frames). It uses encoding scheme which uses only P-frames, so initially video is corrupted, but after several seconds it gradually becomes good. This is not so rare case, actually many popular nowadays DJI drones (e.g. Mavic or Inspire where my video is from, encoded video data is unchanged H.264 stream provided by DJI (...) -- Here
• 08:57
  Is there an elegant way to split a file by chapter using ffmpeg? - Kattern Newest 'ffmpeg' Questions - Stack Overflow
  In this page, Albert Armea share a code to split videos by chapter using ffmpeg. The code is straight forward, but not quite good-looking. ffmpeg -i "$SOURCE.$EXT" 2>&1 | grep Chapter | sed -E "s/ *Chapter #([0-9]+.[0-9]+): start ([0-9]+.[0-9]+), end ([0-9]+.[0-9]+)/-i \\"$SOURCE.$EXT\\" -vcodec copy -acodec copy -ss \\2 -to \\3 \\"$SOURCE-\\1.$EXT\\"/" | xargs -n 11 ffmpeg Is there an elegant way to do this job?
• 08:37
  ffmpeg error during encoding: EOF timestamp not reliable - Massimo Vantaggio Newest 'ffmpeg' Questions - Stack Overflow
  I have noticed that some videos processed by the following command displays an error in the preliminary phase of the process: [Parsed_movie_0 ⓐ 0x7fb06cf00d80] EOF timestamp not reliable All this happens while I'm testing the ffmpeg command line that generates the encoding with the specific required by dash: ffmpeg -y -i inputfile.mp4 -c:a aac -b:a 384k -ar 48000 -ac 2 -async 1 -c:v libx264 -x264opts keyint=60:min-keyint=60:no-scenecut -r 30 -b:v 2400k -maxrate 2400k -bufsize 1200k -t 3600 -vf "scale=-1:$size" -vf "movie=logo.png [watermark]; [in][watermark] (...)
• 07:11
  How to add timestamp to video with different date & time format provided by android? - Milan Tejani Newest 'ffmpeg' Questions - Stack Overflow
  I am making android app to add timestamp to video using FFMPEG library and also it works fine but it add timestamp using by default date time format provided by FFMPEG. it's uses YYYY-MM-DD HH:MM:SS format for timestamp where android provide different date & time format Click here for examples ex: I want to use "EEE, MMM d, ''yy" date format for timestamp. How to do that? I an using this FFMPEG Command: ffmpeg -y -i input.mp4 -vf "drawtext=fontfile=roboto.ttf:fontsize=36:fontcolor=yellow:text='%pts\\:gmtime\\:1456007118'" -preset ultrafast -f mp4 (...) -- , Click here for examples
• 06:58
  FFMPEG Muxing Audio stream is stopped 1seconds C++ - Birds Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create MP4 video and AAC audio stream to .mkv file from desktop. Ultimately we will send this to RTSP. I followed this example(https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/muxing.c) I created a frame from the data received via audio capture (dshow) and video capture After resampling the Audio AAC codec, I perform encoding and muxing. And I check mkv file. All of this works fine when doing audio file + video capture. But Issue is that when I do audio capture (FFPMEG-dshow) + DXGI the audio is only record only 1-2 seconds. The only difference from trying it (...) -- https://github.com/FFmpeg/FFmpeg/blob/master/doc/examples/muxing.c, , , https://drive.google.com/file/d/1RkDdmFxMecQdJDfl8NcyDcZu-FFmKI0J/view?usp=sharing

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• 02:52
  fate/matroska: add a test for xiph lacing - James Almer git.videolan.org Git - ffmpeg.git/rss log
  fate/matroska: add a test for xiph lacing Signed-off-by: James Almer <jamrialⓐgmail.com> [DH] tests/fate/matroska.mak [DH] tests/ref/fate/matroska-xiph-lacing

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

• 02:25
  Missing .so libvpx after upgrade to latest Ubuntu 19.10 - Jacko Newest 'ffmpeg' Questions - Stack Overflow
  I am getting a lot of erros about libvpx.so.5 not begin found: ffplay: error while loading shared libraries: libvpx.so.5: cannot open shared object file: No such file or directory I now have libvpx version 6 install with the upgrade, but ffmpeg is still linking to the old library.
• 01:38
  How to make high smooth, high resolution particle motion animations - algae Newest 'ffmpeg' Questions - Stack Overflow
  For some time I have been having trouble with producing short movies/animations/gifs which are of sufficiently high resolution. I'm going to use R to generate some frames as a random example, but if there is somewhere else I should be creating frames from to give better results I would be interested in that too. Creating frames The kinds of animations I'm interested involve some cloud of 'particles' moving about the page. There are usually a large number of particles and I would like their motion be as smooth as possible. As a random example, consider the R code (using base graphics and (...) -- ,
• 00:15
  FFMPEG commands in JavaScript - Vladyslav Semenyuk Newest 'ffmpeg' Questions - Stack Overflow
  Is it possible to use command like: ffmpeg -i video_1920.mp4 -vf scale=640:360 video_640.mp4 -hide_banner to reduce the resolution of a video in the pure JavaScript. For example I got a dropdown menu in which I have tag, so I want to do a video quality selection by clicking on that menu hyperlink with JS. How to implement that properly, please help.
• 00:23
  Python matplotlib.animation [Errno 13] Permission denied - Fishman Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a simple animated histogram and save it as a .mp4 using matplotlib and ffmpeg on a mac. I have already installed ffMpeg, specified the ffmpeg path, and now I am getting a permission denied error when writing to a folder in my desktop. I tried running as sudo and still get the same error. Help is much appreciated, thank you! Here is the code: df = pd.read_csv('.../data.csv') df = df.dropna() #Get list of weeks weeks = df.ot_date.unique() fig, ax = plt.subplots() data = df.intervals_filled[df['ot_date'].isin([weeks[0]])] n, bins = np.histogram( data , 20) # get the (...)