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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23 views

Want to Blend Frames when Converting from 60fps to 30fps with FFmpeg

I have created some videos of a game I played to upload to YouTube. The game plays at 60fps & the original videos have been recorded at 60fps. However, YouTube re-encodes them down to 30fps using ...
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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 ...
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ffmpeg scale subtitle file from HD to anamorphic SD

I have a 1080p source video that I'd like to scale to anamorphic (widescreen) SD. I'm scaling the video just fine, and the subtitle (hdmv_pgs_subtitle) is scaled, too, but appears stretched and right-...
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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 ...
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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 ...
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17 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 ...
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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....
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41 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 ...
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28 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 ...
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19 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 ...
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unknown H264 color space error

I have been working on a streaming platform. I am receiving a RTSP stream, converting it to H264 via JCodec in Java Spring and sending the result via Websockets to my React App that uses JMuxer for ...
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How can I reduce mpeg file size without losing quality?

I want to download some free videos from a website. There are two option there: DVD Video *.m2v with 2Gb and H.264 Video *.m4v (.mp4) with 400Mb. The second one has low quality. I want to know if I ...
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27 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 ...
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33 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 ...
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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 ...
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189 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 ...
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25 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 ...
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62 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 ...
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51 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 ...
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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 -...
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1k 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 ...
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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 ...
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136 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 ...
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556 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 ...
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682 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 ...
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45 views

Stop Handbrake showing filenames in Text on 1st second of video

When I am creating videos using the Handbrake software, it puts the filename I am using in white text on the start of the video. Is there a setting to stop this or some way around this? I would ...
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35 views

Convert LUT formats

Is there a reliable and somewhat user-friendly way to convert between different LUT formats? I have been searching for a way and find pretty much nothing. My specific problem at hand is that I have ....
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1k views

4:3 - 16:9 Aspect Ratio Conversion with Pillarbox and Textbox

I'm trying to use FFMpeg to adapt 4:3 (SD) to 16:9 (HD) and reverse function. When SD is converted to HD, I need to add pillarboxes around the content. When HD is converted to SD, I need to add ...
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589 views

Can Davinci Resolve convert a movie into (png) pictures…?

I'm a new user of Davinci Resolve. I would like to know if I can use it for converting a video into its pictures ? Do you have a tutorial that explains to me how is the workflow ? maybe on Youtube ? ...
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539 views

FFmpeg for m2t and Sony Bravia - not working

-f mp4 -c:v libx264 -preset veryslow -tune grain -profile:v high422 -flags +ildct+ilme I am preparing video to be streamed (DLNA) from my NAS to an older Sony Bravia. I have successfully created ...
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79 views

Connecting threaded 3.5mm jack plug to non-threaded socket?

I have a lav mic with a threaded jack at the end. It came with a Sennheiser Transmitter/Receiver pair and has a threaded jack to connect into the Transmitter which has a threaded socket to match. ...
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1k views

How to read 10-bit RGB values from HDR video?

I had a HDR video and the format is ProRes. The colour bit depth of ProRes is 10-bit. I would like to extract the 10-bit RGB values from the HDR video. As per this link, I have first converted the 10-...
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48 views

mp4 to wmv AND file compression

I have a mp4 from a video created in iMovie 10. The original output is about 1.5 GB. I uploaded it to youtube to use their compression and re-downloaded. I now have an mp4 at 236mb. I need to ...
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48 views

Video conversion

I'd like to convert quite a few BDMV files to MKV files. I know you can do this with MakeMKV, which isn't freeware. Are there any good freeware programs out there to accomplish this? Also, is the ...
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1k views

How convert avi and wmv to mp4 for html video tag?

I want to convert avi and wmv to mp4 for web and I use below code: ffmpeg -I input.wmv output.mp4 Is that enough?
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2k views

How to convert MPEG-4 to AVC/h.264?

I would like to use ffmpeg, mencoder or still something free. I cannot concatenate two videos because of different video codecs: $ mkvmerge -o merged.mkv 1.mkv \+ 2.mp4 mkvmerge v19.0.0 ('Brave ...
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70 views

Resize, crop, and trim videos

How do I crop and resize about 6000 mp4-movies? They are all 1280 x 800. I need to crop the bottom 100 px and remove the first 4 seconds of each movie. Can this be done with ffmpeg?
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224 views

ffmpeg. Converting through rawbitstream results to noise

I tried consequentially commands below. On output I'm getting video with a mess (even.mp4). ffmpeg -i in.MOV -an -vcodec rawvideo -pix_fmt yuv420p rawbitstream.yuv ffmpeg -r 2 -s 640x480 -i ...
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619 views

ffmpeg hls creation overwriting master manifest

I have a video I'd like to convert to HLS, however, when I run the command, it only records the last few segments to the master manifest. How can I get all of the fragments and their associated data ...
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64 views

Converting a PDF slide show to a video file

I have a LaTeX Beamer presentation that I output into a PDF slide show. I want to turn into a video file (with the ability to add sound later) so that I can generate animations from Beamer . How can ...
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307 views

Convert FFMPEG Waveform Back to audio

I'm trying to convert an audio file to an FFMPEG waveform, train it in HyperGAN, and produce an image file to convert to an audio file. What I'm asking is if there is a way to convert a waveform image ...
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6k views

ffmpeg to convert and merge 3 videos to a single widescreen video

I have three .mov files with video in Apple ProRes (apcn) and audio in PCM S24 LE (in24), of identical length and dimensions (1920x1080), frame rate (23.976024) and each with the same audio track. I'd ...
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2k views

Transcode 5.1 audio in ffmpeg leads to incorrect audio mapping in output

I need to transcode some high res videos (prores or dnxhd files with 5.1 uncompressed 48kHz audio in MOV container) to their low res h264 with AAC keeping the audio still in 5.1 preserving their ...
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2k views

Is mp4 or avi format convertable to raw?

Can I convert it to a raw video ? Arduino Drone Next Step| Buying New Item(s) and Public Flight
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1k views

Do I have any sort of loss converting an M4V file to MKV?

I have a bunch of files I've "shrunk" with Handbrake using a custom preset I've built after reading what each of the advanced options of the x264 encoder, at least those listed under "Advanced" tab, ...
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2k views

Convert video from 24 fps to 25, shortening length (no frame duplication), keeping audio pitch

I have a .mov video with 24fps and 5.1 audio. Is it possible change the framerate from 24 to 25 fps with no frame resampling (no frame duplication / removal - just new framerate interpretation) and ...
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286 views

FFMPEG Command Works, then stops

When I use ffmpeg with this command: $ ffmpeg -i ~/Desktop/The_Karate_Kid_2010.mkv -c:v libx264 -c:a libfdk_aac -c:s mov_text ~/Desktop/The_Karate_Kid_2010.mp4 It works, until this error appears: ...
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1k views

Easily convert & archive a bunch of low res Video CD DAT files MPEG 1/2 to newer better format such as MKV or others?

Each file is around 350-650 MB. This is the media information from the Files: https://i.imgur.com/FqchDMi.png How could I better archive it? Easily convert & archive a bunch of low res ...
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11k views

Problem converting TS to MP4 container with ffmpeg

I have a video stream I captured with VLC and saved as a TS file. The codecs within the file are h.264/AAC, so I thought it would be trivial to use ffmpeg to convert the file from a TS container to ...
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what encoder can take advantage of 16-core setup? converting/ripping Blu-ray to mp4 format

I'm thinking of upgrading my 6-core setup (single CPU) setup to a 2x8-core/CPU setup. I'm wondering what software will allow me to fully utilize all the cores. I've been using handbrake but I do not ...