11 juin

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

• 14:42
  Can you write a video file with out of order (input) frames? - Blindy Newest 'ffmpeg' Questions - Stack Overflow
  I know video files can (and do) contain frames that are encoded out of order, which is why dts and pts exist, but can you send your frames in an arbitrary order, with their correct pts, and expect the video file to play? Specifically I'm wondering about concatenating video files, can I decode both inputs in parallel and send the frames with the correct merged pts as they get decoded? And if so, what would the playback performance implications (...)
• 12:41
  What steps are needed to stream RTSP from FFmpeg? - user1767754 Newest 'ffmpeg' Questions - Stack Overflow
  What steps are needed to stream RTSP from FFmpeg? Streaming UDP is not a problem, but as I want to stream to mobile devices which can natively read RTSP streams, I couldn't find any setup which tells what exactly is needed. Do I need an RTSP streaming server like LIVE555 or can I use FFmpeg only? My Command: ffmpeg -i space.mp4 -vcodec libx264 -tune zerolatency -crf 18 -f rtsp -muxdelay 0.1 rtsp://192.168.1.200:1234 I get an Input/Output error. Do I need a SDP description to use RTSP? And if yes where do I have to put (...)
• 12:58
  Encode audio to aac with libavcodec - ryan Newest 'ffmpeg' Questions - Stack Overflow
  I'm using libavcodec (latest git as of 3/3/10) to encode raw pcm to aac (libfaac support enabled). I do this by calling avcodec_encode_audio repeatedly with codec_context->frame_size samples each time. The first four calls return successfully, but the fifth call never returns. When I use gdb to break, the stack is corrupt. If I use audacity to export the pcm data to a .wav file, then I can use command-line ffmpeg to convert to aac without any issues, so I'm sure it's something I'm doing wrong. I've written a small test (...) -- http://birdie.protoven.com/audio.pcm
• 10:12
  ffmpeg demux concat video output blinks/stuttering between joined clips - hieroshima Newest 'ffmpeg' Questions - Stack Overflow
  I'm experiencing a strange issue with FFmpeg after partially joining a few MP4 clips into one output file (output.mp4). The problem is that the video between clips randomly blinks or stutters, showing frames from the previous scene in the next scene. This happens in a completely random manner. All my MP4 clips have the same FPS, TBR, and TBN values, except for the bitrate (bolded below), which varies for each clip. These clips were prepared and encoded using AWS MediaConvert to ensure they have consistent parameters. Here’s the ffprobe result for one of the clips: Stream (...) -- https://youtu.be/SfWnCbMeOfw
• 10:18
  FFmpeg.Autogen Wrapper: Issue with Zero-Sized Atom Boxes in MP4 Output - Alexander Jansson Newest 'ffmpeg' Questions - Stack Overflow
  I just started learning ffmpeg using ffmpeg.autogen wrapper version 5.1 in c#, and ffmpeg shared libs version 5.1. Im trying to facilitate a class which screenrecords using gdigrab and produces streamable mp4 to a/an buffer/event. Everything seems to work as suposed to with no error except that the outputstream produces atom boxes with 0 in size thus small file size aswell, no data seems to be produced in the boxes, the "debug test mp4 file" is analyzed with MP4Box and the box info is provided in the thread. To be more specific why does this code produce empty atomboxes, is someone (...) -- https://pastebin.com/xkM4MfG7
• 08:59
  Using pydub on AWS lambda - Bailey Newest 'ffmpeg' Questions - Stack Overflow
  Ok, so I have the same problem as here: Using pydub and AWS Lambda but thought it would be cleaner to re-ask here as I have made some progress (I think?). I followed the instructions here: https://medium.com/faun/how-to-use-aws-lambda-layers-f4fe6624aff1 like this: I created a lambda_function.py file: from python.pydub import AudioSegment print('Loading function') def lambda_handler(event, context): print(event) sound = AudioSegment.from_mp3("https://s3-eu-west-1.amazonaws.com/audio.mp3") etc...  (...) -- https://medium.com/faun/how-to-use-aws-lambda-layers-f4fe6624aff1
• 07:32
  ffmpeg command in my Python code is not working in Docker - Akhil Varghese Newest 'ffmpeg' Questions - Stack Overflow
  I am developing a Python (Django-REST) app for video processing. I need to extract the frames of videos and need to save a live stream(RSTP stream) to the desired directory. I am using ffmpeg for saving the RTSP stream, and I have also Dockerized the app. Live Stream save method ⓐapi_view(['POST']) def saveRtsp(request): logger.info("Saving RTSP URL") rtsp_url = request.data.get('rtsp_url') rtsp_video_path = os.path.join(settings.MEDIA_ROOT, 'rtsp.mp4') try: ffmpeg_command = [ 'ffmpeg',  (...) -- ,
• 05:38
  Upload ffmpeg output to S3 - Bruno Munné Newest 'ffmpeg' Questions - Stack Overflow
  When I make the next upload, if the duration of the clip is very short it generates a corrupt file and if it is a little longer, for example 19 seconds, it generates a file that starts from second 8 const passThroughStream = new PassThrough(); const response = await new Promise((resolve, reject) => const command = ffmpeg() .input(`$import.meta.env.BUCKET_URL$m3u8S3`) .inputOptions([`-ss $TIME_OFFSET`]) .outputOptions([`-t $end - start`, '-c:v libvpx', '-c:a libvorbis', '-f webm']) .on('start', (commandLine) => (...)
• 05:53
  The hardware decoding was successful, but the hw_frames_ctx in the received frame is empty - mercuric taylor Newest 'ffmpeg' Questions - Stack Overflow
  I tried to use QSV hardware decoding under ffmpeg, using the integrated graphics 730 on my computer. Here's the code I used to initialize the decoder const AVCodec* codec = NULL; int ret; int err = 0; // Create the QSV hardware device. ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV, "auto", NULL, 0); if (ret < 0) char error_string[AV_ERROR_MAX_STRING_SIZE]; av_make_error_string(error_string, AV_ERROR_MAX_STRING_SIZE, ret); LError("Error creating QSV device: ", error_string); return NULL; // (...)
• 03:19
  FFMPEG udp stream to VLC - leo_dragons Newest 'ffmpeg' Questions - Stack Overflow
  i've been trying to create a transport stream using FFMPEG, when i tried it in VLC it was working immediately, however when i stream from FFMPEG to VLC i can't get it to work, here's my string: ffmpeg -re -i http://ip-of-shoutcast-stream:port?listen -c:a aac -b:a 128k -ar 44100 -ac 2 -vn -f mpegts udp://ip-of-destination-pc:1234?pkt_size=1316 In VLC i use the same network source i used when VLC was streaming in the main PC: udp://ip-of-main-pc:1234 But it doesn't play or show any errors, the orange bar only goes back and (...)
• 03:21
  Unable to capture FFMPEG UDP stream using VLC - Luis H Cabrejo Newest 'ffmpeg' Questions - Stack Overflow
  I'm using FFMPEG to convert to stream to UDP local network but not able unless I define pkt_size ffmpeg -re -i test.mp4 -f mpegts udp://127.0.0.1:23000?pkt_size=1316 Is there a way or work around to omit that option? I have an device encoder aplication without pkt_size option. So only if pkt_size is defined (and equal) VLC is able to capture. I want VLC to work this way if possible ffmpeg -re -i test.mp4 -f mpegts udp://127.0.0.1:23000 (...)
• 00:51
  ffmpeg - very slow conversion - karoluch Newest 'ffmpeg' Questions - Stack Overflow
  I create web app in JavaEE which displays many video formats. I use ffmpeg solution to convert videos to formats which is supported natively by main browsers. According to : http://www.jwplayer.com/html5/formats/ I convert to WEBM container (VP8/VORBIS or VP9/OPUS). But conversion is very slow, bit rate equals to ~ 200kbits/s. To convert I execute following command ffmpeg -i file.mov -c:v libvpx -preset ultrafast result.webm How to speed up conversion to natively supported formats by main (...) -- http://www.jwplayer.com/html5/formats/

10 juin

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

• 17:29
  How to recover video from H264 frames and timestamps [closed] - kokosda Newest 'ffmpeg' Questions - Stack Overflow
  My service receives H264 frames and some metadata related to them like Timestamp from MS Teams. Observations: Those frames are inter-frame compressed. Resolution of those frames can change. Timestamps are like this one 39264692280552704. That represents year 125 if fed to .NET consturctor new DateTime(39264692280552704), so I need to add 1899 years to get a real date. I can wrap the sequence to a playable mp4 container with ffmpeg -i input.h264 -c copy output.mp4, however it is not what I want because the resulting video plays too fast, like on fast forward. (...)
• 15:49
  fmpeg piped output is always providing an empty frame - sar5050 Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to capture a webcam using the ffmpeg command in a Python script and process the frame for my work. For my work, I need to capture and forward through the pipe to my function, but I always get an empty frame. I tried many SO solutions, but they are not helping. ffmpeg_command = 'ffmpeg -f v4l2 -framerate 25 -video_size 960x540 -pix_fmt yuyv422 -i /dev/video0 \\ -f rawvideo \\ -pix_fmt yuyv422 \\ pipe:' pro = subprocess.Popen(ffmpeg_command.split(),stdout=subprocess.PIPE,shell=True) while True: raw_frame = (...)
• 16:13
  ffmpeg drawtext on ubuntu : ffmpeg does not change text location [closed] - Wolf Wolf Newest 'ffmpeg' Questions - Stack Overflow
  I am designing a video editor bot for Telegram. I want to use ffmpeg and I need a text to be placed on the video and change the place of the text randomly every few seconds. There is an example on the site itself. I used the following command: ffmpeg -i "/home/editor/downloads/video_2023-07-10_17-53-05_7375753324605210932.mp4" -filter:v drawtext="fontsize=30:fontfile=/usr/share/hellotext=hellotext/share/World': x=if(eq(mod(t\\,30)\\,0)\\,rand(0\\,(w-text_w))\\,x):y=if(eq(mod (t\\,30 )\\, 0)\\,rand(0\\,(h-text_h))\\,y)" -codec:v libx264 -codec:a (...) -- There is an example on the site itself.
• 16:26
  How to access windows enviroment variables on MSYS? - Mostafa Sataki Newest 'ffmpeg' Questions - Stack Overflow
  I want to build ffmpeg by vs2015 from msys2. In the first add vs2015\\vc\\bin\\amd64 in to path enviroment in windows. Run "vs2015 x64 command prompt" as administrator then run vcvarsall.bat amd64. In the final go to "msys" path and then run "msys2_shell.cmd". I use "which cl" command for localize cl.exe. Output: which: no cl in (/usr/local/bin:/usr/bin:/bin:/opt/bin:/c/Windows/System32:/c/Windows:/c/Windows/System32/Wbem:/c/Windows/System32/WindowsPowerShell/v1.0/) How to access to windows enviroments in (...)
• 16:14
  Why does a command in my Bash-script return 0 even when it fails? Python, Whisper, ffmpeg - d-b Newest 'ffmpeg' Questions - Stack Overflow
  I have a bash script that executes whisper on all sound files in a directory. Whisper uses ffmpeg to decode sound files to a format it can handle. One of the files in the directory was corrupt and caused ffmpeg to fail. The first time I executed my script it returned 1 when it hit that file but when I try to reproduce the error it always returns 0. Here is the log from the first run when 1 was returned: Traceback (most recent call last): File "/Users/db/Library/Python/3.11/lib/python/site-packages/whisper/audio.py", line 48, in load_audio .run(cmd=["ffmpeg", (...)
• 13:01
  FFmpeg/DASH: duration or timestamp out of range for mov/mp4 format - mike Newest 'ffmpeg' Questions - Stack Overflow
  I'm trying to convert a aac stream to dash. The issue is that I get a lot of errors as below(though it seems to segment it into multiple files but I get errors on the player too). The question is why do I get these errors and how can I fix it? If I simply convert "copy" it into to a single mp4 file it works without error. ffmpeg -i "a.mkv" -y -map 0:1 -c:0 copy -min_seg_duration 1000000 -use_timeline 1 -use_template 1 -init_seg_name init.mp4s -media_seg_name "\\$Number\\$.mp4s" -adaptation_sets "id=1,streams=0" -remove_at_exit 0 -f dash -dash 1 (...)
• 13:56
  How to get real-time information from ffmpeg-python process? - duruburak Newest 'ffmpeg' Questions - Stack Overflow
  I've seen some people achieving to scrape out live progress data from ffmpeg subprocess. But for non-command line execution, how could this be accomplished? For example I want to store this real-time information on the command line output line by line or get the progress percentage to the completion. import ffmpeg import threading def ffmpeg_func(path1, path2, path3): global out, err video_part = ffmpeg.input(path1) audio_part = ffmpeg.input(path2) ffm = ffmpeg.output(audio_part, video_part, (...) --
• 12:24
  How can I add ffmpeg file or directory in aws lambda functions? - Vipul Kavar Newest 'ffmpeg' Questions - Stack Overflow
  I am encountering an error when running a Lambda function that merges audio chunks into a single audio file using Python 3.10. The error message is: No such file or directory: 'ffmpeg' def create_combined_audio_from_chunks(sorted_objects_key_list): # Create an empty AudioSegment object to hold the combined audio combined_audio = AudioSegment.empty() for key in sorted_objects_key_list: try: file_content = get_s3_object_content(object_key=key) with tempfile.NamedTemporaryFile(delete=True) as temp_file:  (...)
• 05:02
  FPS reduction for H264 [closed] - Александр А Newest 'ffmpeg' Questions - Stack Overflow
  There is a USB camera that sends H264 frames with a frequency of 30 fps in a resolution of 1920x1080, GOP size 30 or 60 (1 or 2 I frame per second depending on the camera and only P-frames), which requires throughput of about 6 mbit/s. It is necessary to reduce this to no more than 2 mbit/s. All this is done on a weak ARMv7, so the option of transcoding is extremely resource intensive, especially considering that I did not find how to do it as a GPU Mali (NanoPi Neo Core). # ./ffmpeg -hide_banner -codecs | grep h264 DEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: (...) -- as I understood from what was written here

9 juin

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

• 22:46
  ffmpeg does not exit when pipe is closed? - Thomas Newest 'ffmpeg' Questions - Stack Overflow
  If this has already been brought up, I apologize. This is part of a software tuner package I am writing as a POC. It is used by Plex Media Server. For the most part, it works with good picture quality but leaves ffmpeg processes when the User clicks "Stop" or closes the browser, I assume plex is closing the socket and that ffmpeg is not erroring out, but I am not sure. this is part of a function where I pass in a TCP Client Network Stream. TCPListener waits for a call, when it accepts one, it passes the network stream off to this function below. When the TCP Client disconnects, (...)
• 21:46
  Inappropriate ioctl for device in zoneminder - zmc_dvideo0 - Adam Newest 'ffmpeg' Questions - Stack Overflow
  I recently needed to rebuild my zoneminder local camera system, running on an RPi. I switched OS from Debian to Ubuntu and now I'm struggling to get video4linux to decode the video input. The result is either a black or green screen depending on the compression palette I select. I'm using /dev/video0 as my input. v4l2-ctl --list-devices unicam (platform:fe801000.csi): /dev/video0 /dev/media3 In the logs I'm getting: zmc_dvideo0 10907 ERR Unable to query control: Inappropriate ioctl for device I don't understand the (...)
• 20:25
  TypeError: source must be an AudioSource not FFmpegOpusAudio - salice Newest 'ffmpeg' Questions - Stack Overflow
  async def play(ctx, *, link): try: voice_client = await ctx.author.voice.channel.connect() voice_clients[voice_client.guild.id] = voice_client except Exception as e: print(e) if 1==1: if youtube_base_url not in link: query_string = urllib.parse.urlencode( 'search_query': link ) content = urllib.request.urlopen( youtube_results_url + query_string ) search_results = re.findall(r'/watch\\?v=(.11)', content.read().decode()) link = youtube_watch_url + (...)
• 13:23
  Whisper openAI with colab : error message [duplicate] - user35117 Newest 'ffmpeg' Questions - Stack Overflow
  Up to now, i succeed in using Whisper with Colab (with GPU execution and model v3 ) without error message. But today, i'm facing to an error message. Firstly i execute successfully these 2 following commands : !pip install git+https://github.com/openai/whisper.git !sudo apt update && sudo apt install ffmpeg Then, when i execute this third following command : !whisper "88_89_90_91_103_104_105_106_100.mp3" --model large-v3 I obtain an error message. Please find below the whole error message : Do you know where the probleme would be (...)
• 13:27
  Error audio loading when runing Whisper Open AI model - John mick Newest 'ffmpeg' Questions - Stack Overflow
  The problem I'm trying to solve is that I can't run Whisper model for some audio, it says something related to audio decoding. payload.wav: Invalid data found when processing input. raise RuntimeError(f"Failed to load audio: e.stderr.decode()") from e I tried using the micro-machines.wav and it works fine but when i used other audio it gives me an error. import whisper model = whisper.load_model("base") text=model.transcribe('micro-machines.wav',fp16=False) print(text) text=model.transcribe('payload.wav',fp16=False) p -- It appears that the code failed to load the audio file for some reason and even failed to display that error because e.stderr did not contain a valid UTF-8 string
• 08:02
  Use specific channels from specific streams for the final stream using FFMPEG [closed] - Kazu-kun Newest 'ffmpeg' Questions - Stack Overflow
  I want to create a 5.1ch audio stream from a 2ch audio stream. However I want to put a negative delay to LFE, SL and SR channels since they will be played from my bluetooth speaker, so I want to make up for the delay by giving it a negative delay. ffmpeg -itsoffset 0.1 -i input.mkv -i input.mkv \\ filter_complex “\\ [1:a]pan=5.1(side)|FL=FL|FR=FR|LFE [0:a]pan=5.1(side)|FL=FL|FR=FR|LFE [orig5_1][delayed5_1]amerge=inputs=2,pan=5.1(side)|FL=c6|FR=c7|LFE=c2|SL=c3|SR=c4[a]” \\ map "[a]" -map 0:v -map 0:s -c:v copy -c:a flac -c:s copy output.mkv I tried (...)
• 09:08
  FFMpeg in C# with streams - oLaDushek Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to crop mp3 using FFMpeg. I need to use streams for both input and output data. At the moment, I'm trying to use the stream at least only for input data. var inputFile = ⓐ"D:\\TestInput.mp3"; var process = new Process StartInfo = new ProcessStartInfo FileName = ⓐ"path\\to\\ffmpeg.exe", Arguments = "-i - -vn -acodec copy -ss 00:00:00 -t 00:00:30 -y D:\\\\TestFFMpeg.mp3", RedirectStandardInput = true, UseShellExecute = false , EnableRaisingEvents = true ; process.Start(); using (var (...)

8 juin

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

• 22:48
  Can I use HTTP/2.0 for downloading HLS streams using FFmpeg? - SpongeBed Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to download an HLS stream using FFmpeg. However, FFmpeg defaults to HTTP/1.1 for downloading content, and the video source's firewall blocks HTTP/1.1 connections. Consequently, FFmpeg cannot download the video. I used the same headers as my browser to access the content and replicated the request using Insomnia. And again, my request was blocked when using HTTP/1.1. I've searched everywhere but haven't found any information on how to change the HTTP version FFmpeg uses for requests. Is there a way to configure FFmpeg to use HTTP/2.0 instead of (...)
• 22:30
  Looking for a better cutting command in FFmpeg - Mohammad Mansour Newest 'ffmpeg' Questions - Stack Overflow
  This is the original command, it removes the part between the start and end which will be specified in command ffmpeg -i input.ext -vf "select='not(between(t,start,end))', setpts=N/FRAME_RATE/TB" -af "aselect='not(between(t,start,end))', asetpts=N/SR/TB" output.ext is there better options that doesn't re-encode? or atleast is faster?. keep in mind I am want the command to remove the part between the start and end not return it so this for example ins't what I am looking for: ffmpeg -ss start -i input.mp4 -c copy -t end (...)
• 17:54
  Copying GoPro metadata with ffmpeg - Could not find tag for codec none - TomMaier Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to use ffmpeg to copy the metadata of a gopro file. The most basic demonstration of the problem would be to copy everything to a new file: ffmpeg -y -i source.MP4 -c copy -copy_unknown -map 0:v -map 0:a -map 0:2 -map 0:3 -map 0:4 -map_metadata 0 result.MP4 This produces the error: Could not find tag for codec none in stream #2, codec not currently supported in container Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument Error initializing output stream 0:4 -- As I understand it this means that (...) -- GoPro file
• 11:57
  Unable to stream video file from MediaMTX media server to browser via WebRTC - thegreatjedi Newest 'ffmpeg' Questions - Stack Overflow
  I took over a repository at work. It's a working demo comprising a web server which receives video and camera feeds from a media server (built from the rtsp-simple-server Docker image) via a RTSP relay server and streams the feeds to the client, all deployed via Docker Compose. I'm trying to switch over to use WebRTC instead. rtsp-simple-server has upgraded into MediaMTX since the time the demo was created 2 years ago. This is the relevant section of the updated Docker Compose configuration: media-server: image: bluenviron/mediamtx:latest-ffmpeg expose:  (...) -- MediaMTX
• 09:05
  Issue with executing ffprobe command in exec() - Tauseed Zaman Newest 'ffmpeg' Questions - Stack Overflow
  I'm encountering an issue while trying to execute ffprobe commands within a Laravel command. Here's a brief overview of the problem and the relevant code snippets: I'm developing a Laravel application where I need to process video files using ffprobe . The application has a console command named app:process-videos that should extract the duration of video files using ffprobe, and update the database. However, I'm facing difficulties in executing these commands within the Laravel command. Here's the relevant portion of the code from the handle() method of (...)
• 06:10
  Issue with Executing ffprobe Command in Laravel Command - Tauseed Zaman Newest 'ffmpeg' Questions - Stack Overflow
  I'm encountering an issue while trying to execute ffprobe commands within a Laravel command. Here's a brief overview of the problem and the relevant code snippets: I'm developing a Laravel application where I need to process video files using ffprobe . The application has a console command named app:process-videos that should extract the duration of video files using ffprobe, and update the database. However, I'm facing difficulties in executing these commands within the Laravel command. Here's the relevant portion of the code from the handle() method of (...)

7 juin

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

• 15:43
  ffmpeg - mpegts Multicast [closed] - Miguel Duarte Newest 'ffmpeg' Questions - Stack Overflow
  I'm generating a multicast stream with this command: ffmpeg -hwaccel_device 1 -format_code Hi50 -re -f decklink -i 'DeckLink Duo (1)' -pix_fmt yuv420p -c:v h264_nvenc -profile:v high -b:v 3500k -rc 2 -cbr true -maxrate 3500k -bufsize 7000k -c:a mp2 -b:a 192k -f mpegts "udp://239.1.1.2:5000?ttl=2&pkt_size=1316" My problem is that if I open this stream on a device with a 100Mb/s connection, it's heavily pixelated. The same stream on a 1Gb/s device displays fine. I have other multicast streams from our ISP and they display fine regardless of (...)
• 21:00
  How to send Ctrl+C to boost::process? - Mike Newest 'ffmpeg' Questions - Stack Overflow
  I launch FFmpeg in boost::process and get data from it every n seconds. If I terminate the app or FFmpeg in the console using Ctrl+C, FFmpeg flushes all data it has to stdout. But, if I terminate boost::process using the terminate() function, I don't get any data flushed. So I need to send Ctrl+C signal to the process before terminating it to get flushed data from FFmpeg. I tried: GenerateConsoleCtrlEvent(CTRL_C_EVENT, c.id()) But, it seems to have no (...)
• 16:46
  Reading RTCP packets from an IP camera using FFMPEG - Didac Perez Parera Newest 'ffmpeg' Questions - Stack Overflow
  I am using the ffmpeg C library. I need to intercept RTCP packets from the camera in order to get the timestamp from the Sender Report. Is there any method or structure in the ffmpeg that gives me this information? I am completely stuck but I am not able to solve that problem. Any help will be appreciated. Thanks in advance,
• 06:55
  How can I render frames decoded by FFmpeg using hardware decoding with D3D11? - mercuric taylor Newest 'ffmpeg' Questions - Stack Overflow
  I have completed the process of decoding a video frame using FFmpeg. The format of the decoded frame is AV_PIX_FMT_NV12. Now, I want to render this frame to the screen using D3D11. My questions are: What is the equivalent concept in D3D11 for a decoded frame? Is it a texture? I have seen many solutions that convert NV12 data to RGB, but it seems that DX11 does not require this conversion anymore. I just want to display this frame, and since my frame is on the GPU, is there a more convenient way to render directly on the GPU without copying? Please forgive my (...) -- https://github.com/balapradeepswork/D3D11NV12Rendering/tree/master/D3D11NV12Rendering
• 04:17
  Getting "TypeError: must be real number, not NoneType" whenever trying to run write_videofile to a clip in moviepy - Sato Newest 'ffmpeg' Questions - Stack Overflow
  Example code: from moviepy.editor import * clip = VideoFileClip('video.mp4') clip.write_videofile('video2.mp4', fps=30) After showing the following messages, showing that the video is being built and written, Moviepy - Building video video2.mp4. Moviepy - Writing video video2.mp4 The following error message occurs: Traceback (most recent call last): File "", line 1, in File "C:\\Users\\User\\Anaconda3\\lib\\site-packages\\decorator.py", line 232, in fun return caller(func, *(extras + args), **kw) File (...)

6 juin

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

• 08:54
  how to encoded a 10bit .tif file into an HDR video by ffmpeg in command line [closed] - ziyuan Newest 'ffmpeg' Questions - Stack Overflow
  how can i encoded a RGB 10 bit tif file into a hdr video by ffmpeg? and one more question: should the input tiff must be 16bit big- or little- endian? i have try the method here: How can I encode RGB images into HDR10 videos in ffmpeg command-line? ,the same command and setting as the method. However i got this : code 1026: YUV color family cannot have RGB matrix coefficients here is the tiff file i have tried:https://drive.google.com/file/d/1G8oYf9-FQJJPNUxwB0_FmlvBaMnUhCVL/view?usp=drive_link and i found that: the procedure information it seems like the (...) -- https://drive.google.com/file/d/1G8oYf9-FQJJPNUxwB0_FmlvBaMnUhCVL/view?usp=drive_link, the procedure information
• 23:45
  ffmpeg copies and restreams HLS/TS stream to RTP/Janus but fails on HLS/fMP4 stream - puterboy Newest 'ffmpeg' Questions - Stack Overflow
  I am using go2rtc to generate HLS streams to stream video from a PiCamera v3 running on an RPi5 for use in Octoprint. I also need to copy and restream the HLS stream to an RTP Janus server for Spaghetti detection. ffmpeg works fine on an HLS/TS (H264) stream but fails on a similar HLS/fMP4 (H264, H265, AAC) stream -- however, for quality reasons, I would prefer to use an HLS/fMP4 stream. Specifically, I am running the following: ffmpeg -re -i -an -c:v copy -an -f rtp rtp://127.0.0.1:17732?pkt_size=1300``` It streams properly forever when STREAM_URL is in (...)
• 13:49
  PyQt6 6.7.0 - How to fix error: No QtMultimedia backends found - Belleroph0N Newest 'ffmpeg' Questions - Stack Overflow
  Problem on Windows 10 and Windows 11 using Anaconda. Here is the full error message for PyQt6=6.7.0: No QtMultimedia backends found. Only QMediaDevices, QAudioDevice, QSoundEffect, QAudioSink, and QAudioSource are available. Failed to initialize QMediaPlayer "Not available" Failed to create QVideoSink "Not available" Installed PyQt6 using a requirements file: PyQt6 PyQt6-WebEngine requests pyserial pynput Here are a couple things I tried: Reroll version back to PyQt6=6.6.1. This results in an error as well: ImportError: DLL (...) -- issue
• 11:47
  how to prevent the hls video player dont refresh when m3u8 changes - Leo Newest 'ffmpeg' Questions - Stack Overflow
  here i am using ffmpeg to use camera and audio to make a hls stream on server as the stream continious old m3u8 components deletes and new ones gets added to main.m3u8. but as we insert the url of hls stream file main.m3u8. the player refreshes as soon as the file gets rewritten because of new and old ones. so i have tried to change the players like hls.js or videojs etc none were to solve this. how to solve this and make sure the stream runs smoothly. Server.js const startStreaming = (viddev,auddev) => if (ffmpegProcess) ffmpegProcess.kill(); const (...)
• 03:21
  FFMPEG get stuck when transcoding too many FLAC audios [closed] - user25436721 Newest 'ffmpeg' Questions - Stack Overflow
  I'm currently using Editly for create some videos from code, but there are some bugs with ffmpeg(latest). Nothing returns after hours processing(460 audios files during test), I already tried with flac, aac, libshine and libmp3lame encoders, already tried a different a ffmpeg version(static). From the editly code, I already changed the ffmpeg query, slicing in chunks(75), the results were: 0, 75 ok 0, 80 stuck 75, 150 ok 150, 225 ok 225, 300 stuck 300, 375 ok 375, 450 ok Stuck screen(directly from terminal): built with gcc 13 (...) -- Editly
• 07:59
  Broken pipe error when writing video file with moviepy in azure [closed] - Lydia Newest 'ffmpeg' Questions - Stack Overflow
  I have a program that retrieves images (png) and audio files from Azure Blob Storage to merge them into a video, which is then written to a temporary file and saved back to Blob Storage. I'm coding in Python and here is code i use to do that: def merge_image_audio(azure_connection_string): """Merge PNG with mp3 files.""" # get Azure Container Client container_client = get_container_client(azure_connection_string, AZURE_CONTAINER_NAME) # List blobs in the "temp" folder blob_list = container_client.list_blobs(name_starts_with="temp/") # (...)
• 00:12
  FFmpeg lavfutils.h seems to be missing - Collin Newest 'ffmpeg' Questions - Stack Overflow
  The lavfutils.h file is missing from the include folder where the ffmpeg library was put. I installed the ffmpeg library to load an image in c++. I installed it using ./vcpkg ffmpeg. The ff_load_image function is in lavfutils.h, but that file is missing from the ffmpeg_x64-windows folder where vcpkg put the rest of the library. Has the way you load images changed? Or have I installed ffmpeg incorrectly?

5 juin

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

• 08:18
  Converting .360 video (Go Pro Max) to 360 MP4 video? [closed] - Curious_Mate Newest 'ffmpeg' Questions - Stack Overflow
  I am trying to create a script that will convert my .360 videos into 360 MP4 format, but it does not seem to work properly. When I scroll through the video, it looks like I am in a black hole or like I am moving with "warp speed" :) Can anyone help me with the parameters? The goal is to convert them using ffmpeg instead of the traditional export from GoPro Player. Here is the Python script so far: `import os import subprocess # Define the root directory to start from and the path to ffmpeg root_path = r"C:\\Videos" ffmpeg_path = (...)
• 15:29
  Broken pipe when writing video file with moviepy in azure [closed] - Lydia Newest 'ffmpeg' Questions - Stack Overflow
  I have a program that retrieves images (png) and audio files from Azure Blob Storage to merge them into a video, which is then written to a temporary file and saved back to Blob Storage. I'm coding in **Python **and here is the function I use from MoviePy: final_clip.write_videofile(temp_file_name, fps=24, codec='libx264', audio_codec='mp3') I have containerized my code, and the **Docker **image works perfectly on my machine. However, once deployed on Azure, I encounter this problem with writing the video: Failed: [Errno 32] Broken pipe MoviePy error: (...)
• 19:47
  Record linux screen (audio/video) and stream to an API - Joel Newest 'ffmpeg' Questions - Stack Overflow
  I'm running a browser on a Linux server, and I'm trying to figure out the best way to capture the audio/video of the screen, and stream that with as little latency as possible to an API on another server. Requirements: Stream the audio from server A to server B so that server B can pipe that forward to an online transcription service. Stream the audio and video from server A to server B so that server B can store the contents to some kind of blob storage. If the stream is killed for some reason before it's ended, the partial contents should be saved and (...)
• 19:17
  Execute "ffmpeg" command in a loop [duplicate] - Mohammad Torfehnezhad Newest 'ffmpeg' Questions - Stack Overflow
  I have three .wav files in my folder and I want to convert them into .mp3 with ffmpeg. I wrote this bash script, but when I execute it, only the first one is converted to mp3. What should I do to make script keep going through my files? This is the script: #!/bin/bash find . -name '*.wav' | while read f; do ffmpeg -i "$f" -ab 320k -ac 2 "$f%.*.mp3" done
• 17:19
  How do I merge video, audio and subtitles together in ffmpeg via python? - user14609171 Newest 'ffmpeg' Questions - Stack Overflow
  I have been trying to merge a video, audio and subtitle stream in ffmepg but, since it is my first time trying it out, I am having a bit of trouble figuring out how to do so. Goal: The output I am looking for a the video in the background with the subtitles overlayed in the center of the screen with the audio from the input stream, which in this case is an mp3 file. These are my input streams: video_input_stream = ffmpeg.input(background_video) audio_input_stream = ffmpeg.input(audio) subtitle_input_stream = ffmpeg.input(subtitle_file) and I have (...)
• 16:54
  Google Lato Font Display discrepancies between platforms/software [closed] - CRAIG Newest 'ffmpeg' Questions - Stack Overflow
  Using Google's Lato font with 400 weight, is giving me some inconsistent results between Photoshop/Web on MacOS and Linux Imagemagick & Linux ffmpeg. I have printed out some text on my linux server using the font using both imagemagick (v6.9.10-68) and ffmpeg's (v6.0) drawtext feature and in both cases, I get some extra space between the T and the e. (Image below) At first I was only testing ffmpeg and thought it was related to drawtext, but now that imagemagick is doing the same, I am thinking it may be somehow related to how the server is managing the font?  (...) --
• 16:15
  How can I encode RGB images into HDR10 videos in ffmpeg command-line? [closed] - F.X. Newest 'ffmpeg' Questions - Stack Overflow
  How can I encode HDR10 videos from RGB images using the ffmpeg command-line, with the proper color and luminance metadata? There are a lot of ffmpeg command-line examples floating around when searching information about how to encode HDR10 streams properly, but I didn't find any that has a comprehensive list of all the parameters you can tune when using RGB frames as inputs. For example: This article has a lot of information, but uses an existing video as input. Similarly, this article uses an existing video as (...) -- This article, this article
• 14:14
  FFMPEG Concatenating videos with same 25fps results in output file with 3.554fps - Kendra Broom Newest 'ffmpeg' Questions - Stack Overflow
  I created an AWS Lambda function in node.js 18 that is using a static, ver 7 build of FFmpeg located in a lambda layer. Unfortunately it's just the ffmpeg build and doesn't include ffprobe. I have an mp4 audio file in one S3 bucket and a wav audio file in a second S3 bucket. I'm uploading the output file to a third S3 bucket. Specs on the files (please let me know if any more info is needed) Audio: wav, 13kbps, aac (LC), 6:28 duration Video: mp4, 1280x720 resolution, 25 frame rate, h264 codec, 3:27 duration Goal: Create blank video to (...)
• 14:00
  Slow frame copy from d3d11va to CPU memory in LibAV - Igor Newest 'ffmpeg' Questions - Stack Overflow
  I'm using LibAV to decode video (H.264) using dxva2 or d3d11va hardware decoder. I then copy the decoded video frame from the GPU memory to system memory by calling av_hwframe_transfer_data(). I noticed that when using the modern d3d11va hardware decoder, the CPU load is twice as much as when using the old dxva2 hardware decoder. I checked with LibAV 6.1 and with the old version V4.4 - the same result.
• 03:23
  How to save last 30 seconds of video in py - Mateus Coelho Newest 'ffmpeg' Questions - Stack Overflow
  I want the last 30 seconds to be recorded every time I click enter and sent to the cloud. for example, if I click at 00:10:30, I want a video that records from 00:10:00 to 00:10:30 and if I click in sequence at 00:10:32, I need another different video that in its content is recorded from 00:10:02 to 00:10:32. I think I have a problem where I will always end up recovering from the same buffer in the last 30 seconds. Is there any approach so that whenever I click enter I retrieve a unique video? Is my current approach the best for the problem? Or should I use something else? import (...)

4 juin

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

• 21:58
  How to change metadata with ffmpeg/avconv without creating a new file? - Stephan Kulla Newest 'ffmpeg' Questions - Stack Overflow
  I am writing a python script for producing audio and video podcasts. There are a bunch of recorded media files (audio and video) and text files containing the meta information. Now I want to program a function which shall add the information from the meta data text files to all media files (the original and the converted ones). Because I have to handle many different file formats (wav, flac, mp3, mp4, ogg, ogv...) it would be great to have a tool which add meta data to arbitrary formats. My Question: How can I change the metadata of a file with ffmpeg/avconv (...)