Re: [FFmpeg-user] Implimenting Multi-Protocol Encapsulation and muxing with video in an MPEG2-TS

On Monday, September 24, 2018 9:01:31 PM CDT Steven La Plant (RIT Student) wrote: > I am working on a graduate project for R.I.T. and have had an awful time > trying to find a solution to transmit 2 Mbps telemetry data along side 3 > channels of video with a single MPEG2-TS. From what I have

[FFmpeg-user] Implimenting Multi-Protocol Encapsulation and muxing with video in an MPEG2-TS

I am working on a graduate project for R.I.T. and have had an awful time trying to find a solution to transmit 2 Mbps telemetry data along side 3 channels of video with a single MPEG2-TS. From what I have read I believe it can be accomplished with multi-protocol encapsulation (MPE). I have not

Re: [FFmpeg-user] G723.1 conversion to PCM

For the issue of converting G723.1 to PCM format – please see the below input and output and advise. C:\ffmpeg\bin>ffmpeg -acodec g723.1 Robinson.wav -f PCM robinsonconverted.wav ffmpeg version N-92043-g0f36ad514c Copyright (c) 2000-2018 the FFmpeg developers built with gcc 8.2.1 (GCC)

[FFmpeg-user] Bad Quality Webm video with alpha

Hi there. I'm trying to generate a WebM video with alpha for a HTML5 template. Already tried different compression settings and I'm still getting poor quality results for complex videos with lots of animated objects. The Input video is made in After Effects. Its a short 8 seconds video. I'm

[FFmpeg-user] h264 Decoding question

Hi I am working on an application based on FFMPEG version 3.4.2 where the RTSP packets from the camera are captured and store using python. The decoder application is run later. The application receives a byte array which is the actual packet. The goal is to decode the received packet and

Re: [FFmpeg-user] Timestamp for variable frame rate (VFR ) video

> I will inform you about the results. In short: ffmpeg and ffprobe perform very well on VFR video. The presentation time stamp %{pts} is the right information to display by drawtext if you need to know the exact time for a certain frame. It's a pity that you cannot format the float number

Re: [FFmpeg-user] silencedetect floor

On 9/24/18, Josh McNeill wrote: > I'm glad to know it's possible. Unfortunately, the documentation doesn't > give me any clues that have been helpful. I've looked through the > documentation for silencedetect, silenceremove, noise, and filtergraph > syntax. I've even tried just searching through

Re: [FFmpeg-user] silencedetect floor

I'm glad to know it's possible. Unfortunately, the documentation doesn't give me any clues that have been helpful. I've looked through the documentation for silencedetect, silenceremove, noise, and filtergraph syntax. I've even tried just searching through all the documentation for "amplitude"

[FFmpeg-user] Sharpen filter with hardware vaapi encoder

Hi! Is there any way to apply a sharpen filter when using vaapi encoder? With software x264 encoding I use this: -vf unsharp=5:5:1.0:5:5:1.0 But I can't find any way to do that with hardware encoding. My goal is obtaining same visual quality with less encoding time. Thanks!

Re: [FFmpeg-user] Problems playing mjpeg stream at different bitrates

2018-09-20 17:30 GMT+02:00, Fabian Kurt : > It's a FirstSensor DC3K-2-EAP This unfortunately doesn't show up in the comment (I hoped the comment would contain the encoder string). There are different ways to fix this, ideally you would be able to find out if the comment for this sensor always has

Re: [FFmpeg-user] G723.1 conversion to PCM

On Mon, Sep 24, 2018 at 15:02:06 +0200, Paul B Mahol wrote: > First update your ffmpeg version, it is extremly old. Exactly what Paul says. Interestingly, your folder is called ffmpeg-4.0.2, but you are getting ffmpeg-0.5. If this folder contains a newer ffmpeg, you need to provide the full path

Re: [FFmpeg-user] G723.1 conversion to PCM

2018-09-24 15:37 GMT+02:00, esikcalabr...@verizon.net : > Which version to you recommend? Only current FFmpeg git head is supported here. > Can you point me with a URL? http://ffmpeg.org/download.html While compilation is in very general terms required, I suggest you try a Zeranoe binary:

Re: [FFmpeg-user] Get bitrate from stream

2018-09-24 13:26 GMT+02:00, Jesper Nilsson : > This results in a bitrate of 33, but i know that the actual and correct > value is 32. Could you provide a sample? If vlc really shows the correct bitrate, this sounds like a bug in FFmpeg. Carl Eugen

Re: [FFmpeg-user] When capturing rawvideo from camera (avfoundation), ffmpeg adds extra 32 bytes for each frame.

2018-09-21 17:25 GMT+02:00, Peter Gusev : > The discussion on StackOverflow > > shed > some light on what's going on and provided one

Re: [FFmpeg-user] G723.1 conversion to PCM

Which version to you recommend? Can you point me with a URL? Kirk Calabrese, MA,CMT, Network+ Certified Professional IT Consultant -Original Message- From: ffmpeg-user On Behalf Of Paul B Mahol Sent: Monday, September 24, 2018 9:02 AM To: FFmpeg user questions Subject: Re:

Re: [FFmpeg-user] mp3 header missing

2018-09-23 11:19 GMT+02:00, Remo Rayamajhi : > [mpegts @ 0x5b24e80] PES packet size mismatchme=00:03:25.66 > bitrate=1033.6kbits/s speed=1.02x > [mp2 @ 0x5b89d80] Header missing > Error while decoding stream #0:1: Invalid data found when processing input > [mpeg2video @ 0x5b8bc00] Invalid mb type

Re: [FFmpeg-user] Stream an encoded video content and play the URL using ffplay with decryption ket

On Mon, Sep 24, 2018 at 17:40:58 +0530, rosmi sebastian wrote: > sample_enc.mp4 that I used is an encrypted file which is created using > below command: > ffmpeg -i sample.mp4 -vcodec copy -acodec copy -encryption_scheme > cenc-aes-ctr -encryption_key 76a6c65c5ea762046bd749a2e632ccbb >

Re: [FFmpeg-user] -c:v png

2018-09-24 11:14 GMT+02:00, Benoit LELOUTRE : > Can you suggest me a lossy codec with alpha channel? prores comes to mind (it has several advantages over transparency in vpx) but you should try hard if you cannot reduce the bit-depth of your sample, that may lead to better output. In general:

Re: [FFmpeg-user] Stream an encoded video content and play the URL using ffplay with decryption ket

sample_enc.mp4 that I used is an encrypted file which is created using below command: ffmpeg -i sample.mp4 -vcodec copy -acodec copy -encryption_scheme cenc-aes-ctr -encryption_key 76a6c65c5ea762046bd749a2e632ccbb -encryption_kid a7e61c373e219033c21091fa607bf3b8 sample_enc.mp4 and able to play

Re: [FFmpeg-user] Get bitrate from stream

I just realized that this wont work for me either, with the frames. The remote server did not write anything in the frames when running that commad. Unsure why but i just get [FRAME] [/FRAME] [FRAME] [/FRAME] when running that on the server. so i still need to change the bitrate from the read

Re: [FFmpeg-user] -c:v png

On Mon, Sep 24, 2018 at 2:44 PM Benoit LELOUTRE wrote: > > Can you suggest me a lossy codec with alpha channel? > > VP8 and VP9, albeit only in YUV 4:2:0 encoding. Gyan ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] Get bitrate from stream

Hey Moritz, thanks for the reply Im currently running this command: fprobe -select_streams a:0 -show_entries stream=bit_rate -of default=nk=1:nw=1 Output: ffprobe version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2007-2018 the FFmpeg developers built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)

Re: [FFmpeg-user] Stream an encoded video content and play the URL using ffplay with decryption ket

On Mon, Sep 24, 2018 at 15:35:19 +0530, rosmi sebastian wrote: > How to play the rtsp url created by ffmpeg for the encrypted mp4 file > (download the file ,decrypt and play is not valid in our case). > > i tried the below commands > ffmpeg -i sample_enc.mp4 -v 0 -vcodec mpeg4 -f mpegts

[FFmpeg-user] Stream an encoded video content and play the URL using ffplay with decryption ket

We have a requirement to stream an encrypted mp4 file using the ffmpeg. We dont require the transport layer security. How to play the rtsp url created by ffmpeg for the encrypted mp4 file (download the file ,decrypt and play is not valid in our case). i tried the below commands ffmpeg -i

Re: [FFmpeg-user] -c:v png

Le lun. 24 sept. 2018 à 10:50, Benoit LELOUTRE a écrit : > Hi, > I try to compress video with alpha. > For this I'm using -c:v png codec. But for technical issue, I want to > limit the bitrate at 100Mb/s. > First I tried with -b:v 100M but not working. > After I tried with -compression_level 50

[FFmpeg-user] -c:v png

Hi, I try to compress video with alpha. For this I'm using -c:v png codec. But for technical issue, I want to limit the bitrate at 100Mb/s. First I tried with -b:v 100M but not working. After I tried with -compression_level 50 ... no success. For the both, the result is the same with a bitrate

Re: [FFmpeg-user] Quick question

On Mon, Sep 24, 2018 at 08:51:05 +0200, Ivan Arsic wrote: > I tried to convert some exr images with ffmpeg tho im getting an error and > im not sure if its triggered by something else (like my mistake) or its > just as is: > > *[exr @ 01a596cac380] Compression 8 is not implemented. Update

Re: [FFmpeg-user] Quick question

On 9/24/18, Ivan Arsic wrote: > Heya ! > > I tried to convert some exr images with ffmpeg tho im getting an error and > im not sure if its triggered by something else (like my mistake) or its > just as is: > > *[exr @ 01a596cac380] Compression 8 is not implemented. Update your > FFmpeg

[FFmpeg-user] Quick question

Heya ! I tried to convert some exr images with ffmpeg tho im getting an error and im not sure if its triggered by something else (like my mistake) or its just as is: *[exr @ 01a596cac380] Compression 8 is not implemented. Update your FFmpeg version to the newest one from Git. If the problem