Questions tagged [transcode]
The transcode tag has no usage guidance.
86
questions
0
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0answers
31 views
ffmpeg libx264 is noisy
After converting video with ffmpeg to H264, my video is noisy.
ffmpeg -i http://192.168.1.10:5530/bysid/106 -map 0:v:0 -map 0:a:0 -c:v libx264 -c:a mp2 out.mkv
Normal:
Noisy subtitle:
Same result ...
-1
votes
1answer
44 views
When transcoding DVD contents, should I keep the 29.97 framerate?
I'm using handbrake to transcode (the main stream of) a DVD into a x265+AAC file, using the handbrake application.
The source material has a frame rate of 29.97 fps.
My question: When transcoding, ...
0
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0answers
140 views
Transcode h265 to h264 “on the fly” for software NVR
I wonder if anyone has experience with transcoding h265+ to h264 in real-time?
I'm having an IP-cam that only outputs h265 that I would like to use for surveillance purposes. The camera is the latest-...
0
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0answers
15 views
Streaming to Double or copy RTMP servers with ffmpeg [duplicate]
my current code on windows
:loop
title test
ffmpeg -re -i "http://iptv.ts" -c:v libx264 -s 1280x720 -preset veryfast -minrate 2100k -maxrate 3100k -bufsize 3100k -pix_fmt yuv420p -g 50 -c:a ...
1
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0answers
57 views
FFMPEG - Transcoding webm to mp4 - wrong duration
I have a webm file that I want to convert to a mp4 file.
The result is a mp4 file with a different duration than the webm (much longer).
Webm file (via WeTransfer, example.webm, 421kb)
About the ...
0
votes
1answer
34 views
Thumbnail disappears when transcoding AVI to MP4 with ffmpeg
When I try to convert an very old avi to a mp4 with ffmpeg, the thumbnail disappears.
Is there a way to preserve the thumbnail or auto-generate one directly from the video stream, for example, using ...
0
votes
1answer
43 views
How to have Windows 7 store its desktop wallpaper file TranscodedWallpaper.jpg on a RAM disk (RAM drive)?
Windows 7 (and later versions, to my knowledge) stores the current desktop's wallpaper as a transcoded image file named TranscodedWallpaper.jpg.
In Windows 7, the location of this file isX:\Users\<...
asked Jan 18 at 19:34
RockPaperLz- Mask it or Casket
6,28519 gold badges58 silver badges99 bronze badges
2
votes
1answer
1k views
Is FDK-AAC still better than FFmpeg's native AAC encoder?
I wrote this about a year ago while working through my own way trying to compile a FFmpeg for Windows, based on the premise in the FFmpeg wiki that:
The Fraunhofer FDK AAC codec library. This is ...
0
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0answers
34 views
How to mux Vorbis audio and VP9 into WebM format with MKVToolnix?
I downloaded 2 files from Youtube with the Kaner Youtube Downloader (a Firefox Extension).
A VP9 file in the webm container
An opus file in the ogg container
How do I mux them both into a webm ...
0
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0answers
34 views
ffmpeg - constant frame-rate AND fixed bitrate
I am totally new to this and I am trying to transcode a video (.mp4) to make it having constant framerate and fix output bitrate (for video 24M, audio 240K).
I have tried:
ffmpeg -i <input> -...
-1
votes
1answer
90 views
Is there way to increase speed of adding subtitles to a WEBM video?
With MP4 I used this command
ffmpeg -i INPUT.mp4 -vf ass=SUBS.ass -c:v libx264 -preset ultrafast -crf 22 -c:a copy OUTPUT.mp4
which has helped to increase the speed.
But there are some problems with ...
1
vote
1answer
91 views
Automatically convert files to h265 in a certain folder
What I am currently doing
Everything is running on freenas (linux). I always have to go into the shell and start a script to transcode everything inside the folder.
To be exact: I go to the shell and ...
0
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0answers
20 views
real time stream udp ts mpeg2 to localhost rtsp mp4
I am with a volunteer emergency service organization and a novice ffmpeg user. We would like to transcode & stream a real time udp ts mpeg2 Ethernet feed to my PC localhost via rtsp mp4. From the ...
0
votes
1answer
2k views
Can I transcode a file with FFmpeg and read the output file on-the-fly?
I have a .M3U8 stream and I can download it and convert it with FFmpeg:
ffmpeg -protocol_whitelist file,http,https,tcp,tls -i "org_file.m3u8" -c copy -bsf:a aac_adtstoasc output.mp4
However I can't ...
0
votes
1answer
188 views
what is the limitation on max cuda instances for video transcoding?
I have set up Nvidia V100 card on Azure Nc6s_v3 virtual machine. I have set up the latest CUDA driver and SDK. I compiled sample programs from "Video_Codec_SDK_9.0.20" and verified the max parallel ...
2
votes
0answers
2k views
Why do audio files converted from OPUS to M4A have a much higher bitrate?
When doing:
youtube-dl -xf bestaudio/best <link to playlist>
...I get a lot of OPUS files at relatively "normal" bitrates like 130kbps.
However, when I run the same command with the ...
3
votes
2answers
492 views
Is it safe to omit the codec when converting with ffmpeg?
I noticed today that I could encode or transcode video and audio streams using ffmpeg without specifying a codec, due to the fact that it seems to imply the video or audio codec being encoded or ...
2
votes
0answers
469 views
How to handle stream with ffmpeg and GPU
So in my project, I need to capture a video stream, decode the video, run the individual frames through an object detection algorithm and then play the output as a video.
This whole operation is ...
1
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0answers
212 views
Unable To Transcode 8 Sources In One Instance Real Time (FFmpeg)
Just the other day I posted about my inability to transcode a multitrack video real time, -rc-lookahead ended up being the solution. However this was when recording fairly static signals, when each ...
2
votes
1answer
99 views
Multitrack Video Does Not Transcode Real Time
Recently this Github page, dedicated to bypassing Nvidia's encode limit, added windows support:
https://github.com/keylase/nvidia-patch/tree/master/win
Up until now I've been encoding my 5 live ...
0
votes
1answer
181 views
ffmpeg transcode twice compress further?
I have a collection of avi videos (say A).
I first convert them into MPEG4 Part2 (say B) using ffmpeg -i ${inname} -vf scale=340:256,setsar=1:1 -q:v 1 -c:v mpeg4 -g 12 -f rawvideo ${outname}. The ...
1
vote
1answer
400 views
FFmpeg 4 versus version 2.2 very slow transcodes in VMWare CentOS 6 container
Whist using "ffmpeg version n4.0.1" I've noticed that on CentOS6 host within a VMware container the video transcoding takes almost twice as long as "ffmpeg version 2.2.1".
Benchmarks below, ran 3 ...
2
votes
0answers
883 views
Getting Intel Quicksync working in Ubuntu 16.04 in headless mode for HW transcoding
/dev/dri and /usr/lib/dri doesn't exist.
vainfo returns:
error: can't connect to X server!
error: failed to initialize display
Aborted
lspci | grep VGA returns:
00:02.0 VGA compatible controller: ...
2
votes
1answer
248 views
Reject DTS-HD MA
I have couple of video files containing both regular DTS as well as DTS-HD MA audio tracks. I want to get rid of the DTS-HD MA audio streams during transcoding, but have not figured out how to do so.
...
1
vote
1answer
51 views
bash script variables not proper
I updated it a little bit, but I'm still not getting the results I should be getting:
#!/bin/bash
find "$1" -type f | while read filename
do
videoCodec=$(ffprobe -v error -select_streams v:0 -...
0
votes
1answer
261 views
Ffmpeg transcoding video .vob (vcodec MPEG-2)
I want to transcode a file .vob to get the bitrate 1500 with 16/9 ratio I execute this command ffmpeg
ffmpeg -i /path/video.vob -vcodec libx264 -vf scale=1280:-2 -strict experimental -b:v 1308k -b:a ...
2
votes
1answer
5k views
Why is Plex Server transcoding file that can be direct played?
I've installed Plex Media Server in my Raspberry Pi 3. It works perfect but it doesn't have enough CPU power to transcode (when it tries the video freezes every two or three seconds). One of my Plex ...
1
vote
2answers
2k views
Intel i5 Kaby Lake Hardware-Assited transcoding of video and audio to VP9 and FLAC using ffmpeg
I have about 30 gigabytes of video (mostly MP4, some MKV and webm) I need to transcode to 8-bit VP9 with Free Lossless Audio Codec (FLAC) audio in an MKV container from various input codecs (AAC audio;...
0
votes
1answer
801 views
Maximising efficiency of my M4A music playlist
Reading this answer here and questions like:
What lossy audio formats are more (or less) "efficient"?
Are there any perceptible differences between the sound quality of 192 versus 320 kbps ...
1
vote
0answers
1k views
openload.cc How can I extract encoding settings of videos?
My customer needs streaming service for his IP cameras and he ask me about same output quality as videos in openload.cc but I can´t simulate similar quality.I tried several encoding combination but ...
0
votes
1answer
696 views
Any alternatives to VLC transcode for online stream?
I have 2 favorites public radio stations that I always wanted to listen on the phone but due to high quality 192kbps I was not always to listen because it needed good connection. Now using windows VLC ...
1
vote
0answers
356 views
Stuttering in VLC-Transcode
I'm trying to transcode a working internet stream to something my Dreambox could play.
My current status is that I can play it on my desktop and on Dreambox, however, there is some constant ...
1
vote
1answer
5k views
Transcode Multiple Video Files at a Time in VLC
I am using VLC to transcode video files, in the convert/save menu it lets you select multiple files, but when you click Convert, it just converts the first file in the list. Ideally I would be able to ...
0
votes
1answer
2k views
Bulk transcoding ISO/IMG to MP4/MKV
I need a tool/script to help me convert my collection of DVD's to MP4. I've started using Plex instead of playing each image-file directly and it's quite a pain in the butt to manually convert a ...
0
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0answers
1k views
FFMPEG stop working with no error
I am using FFMPEG to create a video using pictures as input. I never had a problem with it, but now for some jobs I can't get correct outputs, some of them are broken.
Using FFPROBE to check the ...
0
votes
0answers
346 views
handbreak does not extract subtitles
i have a personal DVD i am trying to backup to a medium that will not go the way of the 5" floppy...
when i "rip" it via handbreak, i select subtitles, then i click "add all" and the subtitle does ...
1
vote
1answer
385 views
How do I transcode/compress mp4 source files on the Linux command line?
I have some rather large mp4s produced by my phone. They aren't very long, so they're probably not very compressed. What's an example of using a command line Linux tool to transcode one of these to ...
0
votes
1answer
237 views
How to batch convert to mp4 with arista-transcoder?
I dont understand how to list valid preset names and select the Computer - H.264 preset available in the arista-gtk listing.
When I batch convert like arista-transcode -p "Computer - H.264" *.wmv the ...
3
votes
2answers
2k views
ffmpeg equivalent for -movflags faststart for audio
I have several video and audio files on my server that I wish to stream. I have converted all video files to mp4 and audio files to aac.
Now I am streaming both type of files but it seems audio ...
1
vote
0answers
205 views
Downsampling and streaming video over a LAN (WiFi)
I have a Linux file server at home, and I'd like to watch video stored on it on my desktop.
A very simple solution comes very close: use any old HTTP server to serve up the files, and view them in ...
1
vote
1answer
2k views
Transcode RTMP Live stream to multiple clients
I regularly follow livestreams on the website picarto.tv. The website uses RTMP for streaming, and therefore requires flash to show the video source. Many (mobile/embedded) devices don't have flash ...
0
votes
2answers
3k views
Cut an FFmpeg video based on frames not a timecode
I want to cut a video with FFmpeg using something similar to the code below:
ffmpeg -i movie.mp4 -ss 00:00:03 -t 00:00:08 -async 1 cut.mp4
However I want to specify -ss and -t in frames instead of ...
2
votes
0answers
178 views
Can a processor gpu still be used for video transcoding if the motherboard is disabled from using processor gpu?
I am planning to get the following motherboard and cpu.
Asrock Rack e3c224d4i-14s Intel Xeon e3-1276v3
However, after reading the spec sheet on Asrock Rack/Intel Ark, the above mentioned motherboard ...
0
votes
0answers
1k views
FFmpeg - Transcode video and keep original EXIF metadata in the transcoded file?
I am trying to transcode a video from a .mov (recorded with the iPhone) and add the original metadata (EXIF) to transcoded file, how can I achieve that? The original video contains EXIF metadata, etc.
...
4
votes
1answer
3k views
FFmpeg - Cut video into segments, transcode them individually, then concatenate & output to .ts
This is a follow-up question to audio error when concatenating clips using ffmpeg
What I'd like to achieve is the following:
Cut an input video into chunks
Transcode each chunk (video and audio) ...
1
vote
1answer
319 views
Converting problematic 9.99fps video to something standard (ffmpeg?)
I recently got some CCTV video released to me via a FOIA/PA request. I'd like to put up the full version on YouTube, as well as version edited w/ Final Cut Pro. However, Handbrake, Quicktime, Final ...
1
vote
0answers
37 views
How can I transcode “faster playback speed” videos? [duplicate]
I'd like to transcode a video to have faster playback speed, for use on mobile devices / chromecast. VLC has this capability, but it seems to only work during playback. For example, if I use the ...
1
vote
0answers
2k views
How can I reduce the choppiness of my ffmpeg conversions
Here are the options I'm sending ffmpeg:
ffmpeg. -i input.flv -crf 18 -profile:v baseline -level 3.0 -pix_fmt yuv420p -preset veryslow output.mp4
Here's the input file:
http://ct.recorder.s3....
1
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0answers
2k views
Why does VLC cut off the end of my video when transcoding?
I am trying to "bake in" a custom made subtitle file (Advanced SubStation Alpha) for a short (3:46) video. However, despite trying an assortment of commandline options, VLC seems to always cut off the ...
0
votes
1answer
4k views
Transcoding Video to QuickTime Animation (RLE)
I need to transcode video created using the Camstudio Lossless Codec into the QuickTime RLE format in order to get it to work with some other software.
What methods can I use to convert the video? I ...
