All Questions
16
questions
0
votes
0
answers
19
views
How to create a video encoding ladder for any aspect ratio?
For a given video uploaded by a user, I need to create three versions of it to cover standard definition (SD), high definition (HD), full high definition (FHD), and ultra high definition (UHD e.g. 4K)....
- 111
0
votes
1
answer
560
views
ffmpeg - cut without reencoding and strange behaviour: application provided duration is out of range for mov/mp4 format
In Ubuntu 18.04 I quite often used the following command for trimming part of the video without re encoding (which means without any quality loss).
ffmpeg -ss 00:06:00 -i DSCF5984.MOV -t 00:07:00 -c ...
- 101
0
votes
1
answer
349
views
How to convert home movie DVDs to .mpeg files?
My wife brought me a box of DVDs with her home movies from her life before me. I would like to store the contents permanently on our Linux home server alongside 100,000 jpg files and some more recent ...
- 61
0
votes
0
answers
1k
views
Ffmpeg hardware acceleration unsupported formats betwen transpose and auto_scaler_0
I am trying to develop a transoding service which makes use of nvidia hardware acceleration capabilities ( The gpu used in this process is a Tesla T4); I want to generate a mpeg-dash playlist for my ...
- 51
0
votes
1
answer
55
views
How to autocaption a video?
I want to play videos and autocation them.
I have some training videos and I want to see speech to text like what we have in youtube.(to show text under the video)
I don’t want to upload files ...
- 3
0
votes
2
answers
418
views
Streaming with Canon XA10, Black Magic Intensity Shuttle, and StreamLabs OBS on Windows 10
I am attempting to Live Stream with my Canon XA10 using a BlackMagic Intensity Shuttle and StreamLabs OBS. I can't seem to get a picture in either the BM Desktop Video, BM Media Express, or OBS. I ...
- 81
1
vote
1
answer
1k
views
ffmpeg - waveform.png: Invalid argument
I'm trying to use ffmpeg on Synology NAS with DSM 6.2 to create waveform of my mp4 files.
ffmpeg -i aaa.mp4 -lavfi showwavespic=split_channels=1:s=1024x800 waveform.png
[NULL @ 0x24271e0] Unable to ...
- 11
4
votes
1
answer
3k
views
How to split video files upon detected change in resolution? (ie. recorded streams containing multiple widths)
I have many video files (flv/mp4) that change resolution mid-stream (720p/1080p/640).
I would like to use something like ffmpeg to automatically detect the change in resolution and split the videos ...
- 81
0
votes
1
answer
3k
views
why ffmpeg trimming videos while converting to m3u8?
I am using ffmpeg version 3.2.2, and converting mp4 and mov files to m3u8 format by below command.
ffmpeg -i test.mov output.m3u8
The length of test.mov is around 3 min, but it convert it to last 24-...
- 103
1
vote
0
answers
1k
views
Unable to convert .ts file with the mime type video/MP2T to .mp4
I want to play a bunch of .ts files. Most websites mention that users can usually play these files directly in vlc but I couldn't. There was no error. It is just that the file would not open at all. ...
- 111
0
votes
1
answer
1k
views
ffmpeg extract audio from streaming mp4
I am trying to extract audio from streaming mp4,it succeeds on
ffmpeg -i http://www.sample-videos.com/video/mp4/720/big_buck_bunny_720p_1mb.mp4 out2.mp3
But it fails on this facebook mp4 streaming ...
1
vote
1
answer
1k
views
Decoding x265 HEVC more efficiently
I have an old Extreme i7 first generation with 12 threads running a PLEX server. LAtely I've started adding more files compiled using x265 over x264. I noticed that when the system runs a x265 file, ...
- 4,076
0
votes
1
answer
61
views
How do I cut clips using its position from a video?
I have a lot of clip positions that I have to extract from a single video, how can I automate the whole process? As of now I have to manually cut each clip using its position, but as my number of ...
3
votes
1
answer
6k
views
How to create video from images and audio file?
To make the story short, I just want to create a video from a X number of images and a mp3 file, AND get the same audio quality.
I've checked the ffmpeg website, but ... here is what I've got:
...
- 131
1
vote
2
answers
4k
views
Is there a cheap option for restreaming from an MJPEG IP camera in Flash format?
We're working with Axis brand cameras and media encoders (1 camera, 1 encoder) that are outputting MJPEG format video to our web server. We then need to show these streams on a website. Clients will ...
- 121