Questions tagged [conversion]

Conversion is the process of changing one format is to another. Usually this means a software conversion like from MOV to MP4, but can also be a hardware conversion like from HDMI to composite with separated chroma and luminance by cable.

Filter by
Sorted by
Tagged with
0 votes
1 answer
61 views

Convert mp4 to webm in a reasonable time

I have found this solution provided by hackerb9: ffmpeg -i input.mp4 -b:v 0 -crf 30 -pass 1 -an -f webm -y /dev/null ffmpeg -i input.mp4 -b:v 0 -crf 30 -pass 2 output.webm It's works, but ...
user avatar
0 votes
1 answer
160 views

How can we keep the subtitle track when converting from MKV to MP4 with ffmpeg?

I have an MKV with integrated subtitles as such: I want to keep "English [Full] - [English]" when converting to MP4. Currently I use this command: ffmpeg -i myMovie.mkv -vcodec copy -acodec ...
user avatar
0 votes
0 answers
9 views

Connecting CCTV coax-based video surveillance cameras to a Synology IP solution

[I hope this is on-topic here as it appears somewhat related questions have been asked before] I have a 4-camera analog CCTV system using coax cable. I'd like to replace my analog DVR (digital video ...
user avatar
  • 101
0 votes
1 answer
10 views

How can I convert and reduce the size of a ts video?

I have season 21 of the Air Crash Investigation TV program. Each episode is around 40-50 minutes and in ts format, but it is around 2.4 GB which is unacceptable. I have 2-3 hours movies that are less ...
user avatar
0 votes
0 answers
7 views

Automatically creating a stop motion sequence from single frames using EDL/CSV for the timing, what format should the metadata file be?

I'd like to automatically generate a sequence in Premiere by importing a text file with frame names from the camera (i.e. DSCF9094) and relavent timecodes. This would be to create a stop motion/...
user avatar
1 vote
0 answers
133 views

FFmpeg parameters for Fisheye image correction

I am trying to achieve two things: Fisheye video to equirectangular Fisheye video to Flat (if I understood correctly, it is a non 360 interactive image. For this I need just the fisheye image but ...
user avatar
0 votes
0 answers
22 views

MOV file contains data from "Apple Elementary video MPEG-2 Media Handler" codec. How do I access it in current MacOS?

I am helping a director access an archive file of a documentary. The file is presented as a 3GB MOV. FFmpeg indicates the following: Metadata: major_brand : qt minor_version : ...
user avatar
  • 101
1 vote
1 answer
308 views

Converting Video from 30 fps to 29.97fps so Audio Syncs to Other 29.97fps Videos with ffmpeg

I have three videos that I am trying to sync so I can setup a multi-camera editing project (I'm using Vegas Pro) Two are at 29.97fps and one is at 30fps. If I manually sync them all at the start, by ...
user avatar
  • 113
2 votes
1 answer
21 views

Reverting Loss from .MOV (MPEG-4 Compression)

I was wondering if it is possible to revert the loss that was caused by MPEG-4 compression. I had HD quality images and our colleague made the grave mistake of converting these HD images into a "....
user avatar
0 votes
0 answers
8 views

How can I connect/convert an H264 network stream to an AHD stream?

I have a camera which can output video via an HD-SDI signal on a coaxial cable with a BNC connector as well as via an H264 network stream within its ethernet cable. The BNC cable is connected to an ...
user avatar
0 votes
1 answer
44 views

How to convert the DVD .VOB collection to MPEG without re-encoding (and quality loss)?

How to convert the DVD .VOB collection to MPEG without re-encoding (and quality loss)? The .MPEG files are what DVD format is built upon, the singular files are easy to handle, and overall, can be ...
user avatar
  • 200
1 vote
0 answers
54 views

How to convert asynchronous stream of JPEG images to video stream

I have an HTTP server that streams images from a camera in a series of HTTP responses to a single request. The frame rate of this direct stream fluctuates, ie. some frames take longer to produce, some ...
user avatar
0 votes
1 answer
98 views

How to play Video TS folder in VLC or convert it to MP4

I am trying to play a DVD by copying the contents (a Video TS and a Jacket_P folder) to my computer. I copied the Video_TS and Jacket_P folders from a DVD to my computer. The Video_TS folder has the ...
user avatar
1 vote
1 answer
133 views

FFmpeg seems to write bad .w64 files for pcm_f32le streams

I have a problem with FFmpeg when writing a pcm_f32le stream to a Wave64 file format (.w64). Basically, only FFplay can read the file back correctly. I tried with VLC, but it seems it cannot read any ....
user avatar
  • 13
1 vote
0 answers
14 views

What are the limitations of converting a video file from .mov to .mp4 by simply changing the suffix?

I need to convert some home-made .mov files shot on my iPhone to .mp4 format. Various websites, mostly dodgy-looking, offer to carry out this conversion online, but I also read somewhere that you can ...
user avatar
  • 153
0 votes
1 answer
13 views

How to choose a bitrate when converting between formats?

I have a number of video files I need to convert to "regular" .mp4 format to view on my computer. The format they are in is not supported by my device (the driver has not been backported to ...
user avatar
0 votes
1 answer
548 views

.EXE VIDEO CONVERT TO MP4

I have a video that extension is .exe. I try to open this file in Windows but I can't. I try to convert this file to mp4 but again return empty file. How can I open .exe video?
user avatar
  • 1
4 votes
1 answer
2k views

Lossless convert 3gp video to mp4 using ffmpeg

I'm trying to get lossless conversion of 3gp to mp4 using ffmpeg. I tried ffmpeg -i input.3gp -vcodec h264 -c:a aac output.mp4 I tried with "libx264" for the video codec, I tried just a ...
user avatar
  • 43
0 votes
0 answers
130 views

How to detect "late" audio streams in MPEG-2 TS (with ffmpeg, ffprobe or mediainfo)?

I am recording from my Linux TV-Sat receiver in MPEG-2 transport stream (mpeg2video) format. The recording starts before the actual movie, so it usually only has a single (local) audio stream in the ...
user avatar
  • 1
0 votes
1 answer
307 views

Can I use Apple Compressor software to convert mkv files to mp4

I use Final Cut Pro X. I am planning to buy Compressor software too which gives me options in exporting my video. Can this same software be used for converting mkv files to mp4 because Final Cut Pro X ...
user avatar
  • 113
1 vote
0 answers
121 views

Is a TBC required for converting VHS home videos to digital format?

This is a follow-up question to this one. The DigitalFAQ forum, whose members seem to know a lot about this particular topic, say about TBCs: You must have some form of TBC, it's not optional. You ...
user avatar
0 votes
1 answer
189 views

Can I use ffmpeg to encode a video for Camtasia import?

I'm using ffmpeg to create screencasts. The command looks like this: ffmpeg -f x11grab -framerate 30 \ $(xwininfo | gawk 'match($0, /-geometry ([0-9]+x[0-9]+).([0-9]+).([0-9]+)/, a)\ { ...
user avatar
0 votes
0 answers
92 views

ffmpg (copy existing settings?) or crop a .mov with alpha and have it be open-able using Quicktime (not VLC)

How do you have ffmpeg copy all existing settings except the crop dimensions of a video file? I've been struggling to crop an .mov with alpha channel (transparent video), so that it can be opened ...
user avatar
  • 101
1 vote
2 answers
603 views

Why aren't chapters being added to my m2ts using tsmuxer?

Question - Why aren't chapters being added to my m2ts using tsmuxer? Background I have a mkv file with 61 chapters. I confirmed the presence of those chapters by using mkvtoolnix. I want to convert ...
user avatar
  • 111
0 votes
0 answers
167 views

Changes in file size and quality after ffmpeg VOB/mp4 conversion

Question I wish to know — in my own particular case — why the conversion of VOB files to mp4 files using ffmpeg results in files of only about one quarter the size, whether this reduces the quality ...
user avatar
  • 101
0 votes
1 answer
14 views

Decrease size of a avi video with lowest quality loss

I have been working on an animation with Blender. Further I rendered it at 24 fps at 1080p resolution. The problem is that the rendered video is around 30 seconds and has size around 4.3 GB. Is there ...
user avatar
  • 1
1 vote
1 answer
836 views

How to find/detect the real video resolution?

Imagine you have recorded/captured the screen at 1080p, but it was displaying a 480p video maximized to fullscreen. The result file is technically 1080p, but it really is showing a 480p video, that is ...
user avatar
  • 11
0 votes
1 answer
761 views

ffmpeg: convert an existing audio stream as an additional audio stream (keeping untouched original as well)

I have a video with 1 video stream, 2 audio streams (TrueHD 7.1 and E-AC3 5.1), a bunch of PGS subtitles and chapters. I want to copy the video, convert the 7.1 audio into AAC, copy over the original ...
user avatar
  • 103
1 vote
2 answers
73 views

Batch converting files to monochrome

I am looking for a free software that lets me convert a batch of video files to monochrome. The closest I've found so far is Any Video Converter free but this does neither allow for easy application ...
user avatar
3 votes
2 answers
5k views

How can I merge five mkv files I've created in OBS Studio?

I used OBS Studio to create five recordings. Now I need to submit them as just one file on YouTube, so my five .mkv files has to be merged into just one file. Can it be done in OBS Studio, if so ...
user avatar
0 votes
1 answer
267 views

Using ffmpeg to convert files to OVG (libtheora) on Windows 10 results in corrupted Video Files

ffmpeg version 4.2.2 win64 static I'm using this command in Windows 10 to convert a file from mp4 to ogv: ffmpeg -i input.mp4 -c:v libtheora -q:v 10 -c:a libvorbis -q:a 10 output.ogv The result is ...
user avatar
  • 3
0 votes
1 answer
109 views

Encode a small proxy file with multiple audio streams for editing on Linux

After capturing 2K video in 444p with OBS, I need to transcode it to a low quality proxy version that's still easy to scrub and not a huge file. I capture 3 audio tracks in 32-bit PCM and the image ...
user avatar
  • 141
0 votes
1 answer
34 views

What pixel count is required for a near perfect digital copy of an old movie?

I stupidly posted this on Photography SE yesterday evening. I'm posting now in a more appropriate place. I've been trying to get my hands on some of the very best digital versions of some classic ...
user avatar
0 votes
0 answers
1k views

Another question on Non-monotonous DTS in output stream

I use ffmpeg to convert and join multiple mp3 files into m4a. BITRATE=128k find . -name "*.mp3" | parallel --lb -k "ffmpeg -y -i {} -map 0:a -c:a aac -b:a $BITRATE {.}.m4a" OUT_NAME=${OUT_NAME:=out....
user avatar
1 vote
1 answer
130 views

Create one split screen video, separate audio streams and a thumbnail from the resultant split screen video - all in one pass

I'm using ffmpeg to create several single splitscreen videos out of 2 separate videos. The 2 videos have audio so I want to extract the 2 video's audio streams as 2 separate mp3s and also create a ...
user avatar
0 votes
1 answer
677 views

What format should I use to archive video issued from mini DV tapes?

I want to convert and archive movies captured with mini DV tapes. Videos are family movies. Native format in dvvideo is huge (about 220 MB/min). So I am willing to accept video compression but I ...
user avatar
  • 101
0 votes
1 answer
37 views

US DVD playback problems in UK

I recently brought back some DVD's recorded at a conference in Florida, USA. They play on my UK DVD and computer but with with horizontal lines across the picture. Is this a region problem or a NTSC ...
user avatar
0 votes
1 answer
43 views

recomendations for conversion

I have a video in a very not compatible format and want to convert it to something like mpeg. I already have ffmpeg tool installed. Do you have any recommendations on what arguments to give ffmpeg for ...
user avatar
0 votes
1 answer
357 views

How can I convert a large file from MP4 to MOV?

I recorded a 5 minute video with my phone, it is a 565M MP4 file. I need to submit it as MOV, specifically. All online converters reject the file as 'too large' and all downloadable programs cost at ...
user avatar
0 votes
0 answers
25 views

Every 18 or 19 frames from an undistorted .MP4 clip gets pixelized when played via Final Cut

I have a .MP4 movie exported from Blender in 24fps in good quality, without any pixelation problems. In whatever movie player I open it, there are no pixelation problems. When I create a new project ...
user avatar
  • 101
1 vote
3 answers
871 views

Extract audio from video preserving audio quality

I need to extract sound from videos. There must be know loss of quality (since the sound files will be used in speech-to-text services). So I want to extract the audio from the video exactly as it is ...
user avatar
  • 113
0 votes
0 answers
29 views

How to quickly merge a LOT (and i mean a LOT) of footage?

As the title says, we had an event recently and I plan to make a movie with the video from the event captured by four separate cameras. The files are ~500kb each. There are four folders, each with ...
user avatar
1 vote
1 answer
157 views

FFMPEG transcription from .webm to HNxHD

I'm a n00bie with video production. I installed ffmpeg. It's recognized. So I tried my first conversion. ffmpeg -i earth.webm earth.DNxHD and, then, after searching: ffmpeg -i earth.webm -f DNxHD ...
user avatar
  • 113
0 votes
1 answer
139 views

Trying to improve choppy ipad screen capture

I'm trying to improve the choppy screen capture that I'm getting on my ipad. The screen capture plays smoothly when viewed on the ipad itself, however it is choppy when played on my pc in vlc, and ...
user avatar
4 votes
2 answers
228 views

Star Trek Continues: ffmeg dvdsub: overlapping subtitles

So I've downloaded the free fan-created Star Trek Continues Blue-Ray ISO for Episodes 1-3 and I'm trying to convert the FHD 1920x1080 to SD 960x540 to be able to watch on my phone: ffmpeg -...
user avatar
  • 206
0 votes
1 answer
5k views

Convert video with ffmpeg to have the same quality

I want to make some present for my grandma. And prepare some video. Unfortunately here video player is old and could not read some file formats. She is not at home now, so I don't know which player ...
user avatar
  • 103
0 votes
1 answer
79 views

FFMPEG - Creating script to convert a video into audio file (or anything related really) + diverses questions

Good day everyone. Im making my babysteps into ffmpeg, and so far this tool has been really helpfull. Anyway. Im currently using this line as a convertion basis : ffmpeg -i name.mov -c:v libx264 ...
user avatar
0 votes
0 answers
500 views

Convert 3d video to double 2d video using ffmpeg

I want to convert 3d video to 2d video. I saw another topic How to convert a 3D movie to 2D using ffmpeg but as far I know 3d video is build from 2 videos so I should be double output video. One for ...
user avatar
  • 101
1 vote
0 answers
655 views

iMovie to Instagram

I have an issue with this process to edit a video (6sec, 10MB => in the instagram range) and share it on Instagram : edit in iMovie file / share /file Resolution 720P, Quality High upload on Google ...
user avatar
  • 111
0 votes
1 answer
2k views

How to specify different flags for inputs with FFMPEG?

You can specify multiple inputs to FFMPEG and mix them into a single output. I understand the basics of this, for example: ffmpeg -i vid1.mp4 -i vid2.mp4 [commands] output.mp4 What I can't figure ...
user avatar
  • 1,999