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.

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How do I export 180º stereoscopic VR footage as "normal" monoscopic video for consumption by normal video players

The title sums up the quest. I am assuming I can do this with Premiere Pro somehow but if I need to use some other method, I'm fine with that as well. An example of what I imagine I want to do: I ...
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Ffmpeg amv conversion

I have a friend in an institution. He only has access to a SanDisk sansa clip sport mp3 player, but it has been modded to run firmware for a Ruizu X10 mp3 player. It can display videos in amv format ...
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Converting updating series of images to video with different durations using ffmpeg

My program generates images with different frame durations. I want to generate a video of them using ffmpeg simultaneously while new images are generated I know how to generate a video using concat ...
HMD's user avatar
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Can't create proxies of Panasonic GH6 5.7K ProRes in Final Cut Pro

I recently shot a 20-minute clip on a Panasonic GH6. I recorded 5.7K at 29.97 fps with ProRes 422, and the resulting file is about 500 GB. I recorded to a Samsung 2 TB T7 Shield. I plugged the drive ...
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Handbrake Output Visually Freezes on Interstitial

I downloaded an m3u8 stream using a Chrome plugin, and it created an mp4 file which I can play fully in VLC. Next, I am attempting to use Handbrake to encode this file to be played on an old iPod Nano....
Matt Mc's user avatar
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Why X265 conversion is very slow on some devices

When I am converting my video using FFMpeg, I am using x265 to do the compression. But the issue is this conversion is much much slower. But while I am using my iPad 6th Generation, this works much ...
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What are the apparently extra files on a DVD, and what gets lost when the VOB file is converted to MP4?

This is for curiosity only; I'm not trying to break copyright. (I own the disc and there's a much better quality version available on YouTube). I copy one file from the disc, convert it from .vob to ....
Ray Butterworth's user avatar
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Can you fix videos with "error: more than 5 seconds of late video" without re-encoding with ffmpeg?

I have obtained a video, ffprobe for it shows: $ ffprobe test-000000.mp4 ffprobe version 4.2.7-0ubuntu0.1 Copyright (c) 2007-2022 the FFmpeg developers ... Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '...
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Converting MTS to MP4 gives strange artefacts

I am converting video taken with various personal cameras in .MTS format to mp4 in order to reduce the file size. I am getting some strange artefacts and I wonder what simple mistake I am making? ...
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ffmpeg-converted video file won't play in Windows Media Player or Movies & TV

I am using ffmpeg-python to convert an hevc mkv file to an h264 mp4. This is the relevant code: ffmpeg.input(video_file).output(out_name, vcodec='libx264', **{'pix_fmt': 'yuv420p'}).run() Yet after ...
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Using FFMPEG to convert an MKV with multiple subtitles, audio tracks and chapters to a plain mp4

I have MKV files which contain multiple subtitle options, multiple audio options, and multiple chapters. I'm wanting to convert to MP4. The MKV's are x265 with DD 5.1. I just want x264 MP4's with ...
Adam's user avatar
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YUV420 to losseless

I am using Raspberrypi HiQ camera to capture High Speed(120fps) videos of planets for astronomy purposes. Using libcamera-vid I can record h264 upto 4.2 but I saw h264 has limitation of 60fps. I ...
OuttaControl's user avatar
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Is there an optimal way to preserve quality when translating file formats?

My screen recording software, OBS, seems to encourage recording in MKV. My video editing software, DaVinci Resolve 18, doesn't support this format on Linux (as far as I can tell). The options I have ...
Addem's user avatar
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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 ...
Giacomo Alessandroni's user avatar
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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 ...
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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 ...
mbloch's user avatar
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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 ...
Khashayar's user avatar
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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 ...
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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 : ...
Mark's user avatar
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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 ...
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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 "....
Jaegermeister's user avatar
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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 ...
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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 ...
Szabolcs Szekelyi's user avatar
3 votes
1 answer
726 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 ...
user436788's user avatar
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390 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 ....
Shuffle's user avatar
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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 ...
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.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?
Sun's user avatar
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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 ...
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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 ...
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2 answers
599 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 ...
TV Nath's user avatar
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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 ...
Hashim Aziz's user avatar
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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)\ { ...
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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 ...
ina's user avatar
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2 answers
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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 ...
Craig's user avatar
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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 ...
David's user avatar
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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 ...
Mkx's user avatar
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2 votes
2 answers
2k 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 ...
Kirill's user avatar
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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 ...
Thomas's user avatar
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2 answers
122 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 ...
Wottensprels's user avatar
4 votes
2 answers
9k 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 ...
Ola Ström's user avatar
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496 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 ...
wappa's user avatar
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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 ...
unfa's user avatar
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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 ...
Tom Hosker's user avatar
1 vote
1 answer
264 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 ...
Ben Hardy's user avatar
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1k 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 ...
kFly's user avatar
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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 ...
Tomas Babelis's user avatar
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1 answer
381 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 ...
Igor Trujnara's user avatar
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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 ...
O0123's user avatar
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2 votes
3 answers
1k 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 ...
Leo's user avatar
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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 ...
Vinny Hummel's user avatar

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