Questions tagged [video-conversion]

The video-conversion tag covers software & formats related to converting videos from one format or container to the other.

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1answer
26 views

How to convert an mkv file with several subtitle tracks into mp4 with one of the subtitle streams hardcoded using ffmpeg?

I would like to know how to convert an mkv file with several subtitle and audio tracks into an mp4 with one of the subtitle tracks hardcoded and a single audio track selected using ffmpeg? It should ...
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1answer
18 views

Can the frame rate of video be adjusted and draw text including the *new* frame number in a single invocation of ffmpeg?

I am trying to adjust the frame rate -r fps of a video, and draw text which includes the new frame number -vf drawtext=text='frame %{frame_num} %{pts}'. Is this possible with a single invocation of ...
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30 views

does choice of SSD affect video capture, like HDD?

I don't know well, but I believe the speed or some other characteristic of HDDs affects the quality of video capture when capturing an analog-to-PC video input. If SSDs are faster than HDDs, it seems ...
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1answer
43 views

How to connect external GPU output to laptop display ?. Is it possible?

I have external GPU GTX 670 in my laptop connected via riser pci-e and I'd like to connect GPU output directly to laptop display which has hardware identifier in device manager MONITOR\AUO46EC ...
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1answer
29 views

Is there any way to send signal from hdmi to ethernet converters (which have no ip) over my network

I'm a bit of a networking beginner and I'm looking to send video over my network. I was thinking something like below; Camera -> hdmi/cat5 converter -> cat5 -> network -> cat5 -> hdmi/cat5 converter -...
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1answer
114 views

2-pass batch video encoding using ffmpeg and/or python

I have a large set of video files I would like to encode to smaller files on a Windows machine. I want to use a 4K constant video bitrate and copy the audio. I've settled on using 2-pass FFmpeg to ...
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30 views

How to add instant zoom in and out effect to a video?

I have MP4 that i want to zoom in then zoom out then repeat/loop till the end of video, every zoom in and out is 3sec long between them, zoom in must be instant left and then zoom out and again ...
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1answer
44 views

Separate different filetypes of movies to different folders on my NAS

Background: I have more than 500 movies on my NAS. My Family could watch those movies wherever they are. The main problem is my Synology DS215J NAS device can not play *.avi files, but can play mkv, ...
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26 views

Converting VP9 webm to VP8

I wonder how can I convert VP9 webm to VP8 with FFmpeg or Matroska (matroska would be better) without changing any kind of setting? I just want the output to be exactly same as the input but as VP8 ...
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79 views

Why are video converters turning MKV movies into HUGE MP4 files on conversion?

I have read multiple resources that say the compression ratios are similar (MKV and MP4), and that converted MKV files are actually slightly smaller, because MKVs have items MP4 doesn't support (such ...
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1answer
65 views

Using ffmpeg to denoise (reduce film grain)

I have a large collection of movies I'd like to re-encode to both reduce size and improve picture quality. A large number are old black and white movies that are pretty grainy, but even titles through ...
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1answer
51 views

Error using -itsoffset and enable=gt() with FFMPEG

I’m trying to add a short outro to the end of a video clip, which overlays starting at the final frame of that clip. So far I can pad the clip displaying the final frame for 10 seconds (time for the ...
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37 views

Extending the length of a video and overlaying an alpha PNG image sequence using FFMPEG

I’ve got several videos to which I’d like to add ‘outro’ animations to, using FFMPEG. The outro animation itself is a sequence of 41 frames of alpha PNG images named consecutively, from Outro.00000....
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16 views

Is there a way to consolidate two damaged video files with missing data using ffmpeg or another tool?

I have two video files (different bitrate encodes) of the same footage that both got damaged due to a hard disk failure. I have managed to recover both files, but in an incomplete manner, such that ...
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53 views

FFMPEG - Why doesn't this ffmpeg converted video play on LG TV while another does?

I have two files created from same big mp4 file. One (A.mp4) plays fine on my LG TV while the TV complains about the other (B.mp4). A.mp4 is of 5 seconds while B.mp4 is of 10 minutes. The first one ...
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44 views

ffmpeg encoding requested yuv420p but got yuvj420p

When I encode with ffmpeg on Ubuntu 18, the default encoder h264 (libx264) uses by default the pixel format yuvj420p. But https://ffmpeg.org/doxygen/trunk/pixfmt_8h_source.html says that ...
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22 views

Using ffmpeg tinterlace with a sequence of images

I need to create a 1920x1080 interlaced .yuv video from a sequence of 1920x540 .png images, such that when deinterlaced it has the top field with the entire .png image content and a black bottom field....
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3 views

Skype noise by using two same id participation in video conference at low internet speed condition

we are using Skype for video conference (university classes during corona ...) and when i tried to take part in video conference with my PC and android cell phone by the same id, , when internet speed ...
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1answer
76 views

I've got a batch file that works great on my Windows PC but won't work at all on my Windows server

I've written a batch file that uses ffmpeg to compress 1080p videos from my camera to 720p videos (using 2 passes) for my website. It works great on my Windows PC at home but when I attempt to use it ...
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19 views

Recording the screen and, simultaneously, converting the recorded partial video

I'm wondering if exist a way to record the screen (video+audio of my laptop) and, simultaneously, convert the recorded partial video in real time. This could be a good strategy to save time (if the ...
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2answers
48 views

ffmpeg add audio to left chanel , convert to mp4 and change the warper

We have a Quicktime uncompressed file with no audio and 1 channel audio file. At the end, I need 2 files: uncompress.mov with left audio Codec: h.264 Wrapper: .mov Audio on the left channel. I ...
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1answer
32 views

Download every n-th pixel on every n-th frame of MP4 file

I work in an environment with limited bandwidth. I want to be able to download MP4 files but I don't care much about the quality. What I thought about to theoretically bring down the bandwidth usage ...
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35 views

Audio encoding with 2 passes in ffmpeg

I have a video with a DTS audio file that I want to encode on android. Now, on my laptop I had an old GUI that had the option to encode audio using 2 passes. I have FFmpeg on android but I don't know ...
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22 views

Split MKV in chunks smaller than 4 GB?

I need to use a device formatted in FAT32 to store/share movies (Using my routers filesharing feature. Unfortunately, my router doesn't support ExFat, only FAT32.). FAT32 has a limit for how big files ...
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135 views

FFMPEG: Error splitting the input into NAL units / Timestamps are unset in a packet for stream 0 when changing from avi to mp4

I am trying to change the container of a video acquired from an NVR using ffmpeg, but the output video is not playable by VLC or QuickTime. The output video stays still. In detail, using the following ...
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49 views

ffmpeg reducing frame rate doesn't decrease file size

My goal is to reduce the overall file size of a video without quality loss. The source video is at 30fps with keyframes every 90 frames. For our purposes we only need the video to be at 3fps and ...
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89 views

Which versions of ffmpeg support “Encrypted fmp4”?

Using ffmpeg version 3.4.6-0ubuntu0.18.04.1, I think it successfully converted an input mp4 file to encrypted files: list_1080p_0000.m4s list_1080p_0001.m4s list_1080p_0002.m4s list_1080p.m3u8 ...
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1answer
396 views

Visually lossless 1080p to 720p using ffmpeg

I have an mkvvideo file which is 1080p Video: hevc (Main 10), yuv420p10le(tv), 1920x1080, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default) Can someone help me convert it to ...
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1answer
46 views

Cross-Merge Many Videos

I have one folder with 30 videos, and another with 4. I want to merge the 30 first video as an intro to the 4, in order to create 120 different videos. In other words, imagine letters are intro videos ...
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1answer
276 views

ffmpeg key frames not being respected

I'm trying to splice a variety of videos at the exact same timestamps. My working command forces key frames at each of those timestamps and then uses segment_frames to do the job. The problem is, it ...
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2answers
205 views

How can I convert raw h264 file from IP camera to something playable on a PC?

My security camera (Victure PC730) stores short videos on the SD card if it detects any motion. The files are named xx.h264. No player (VLC, MPlayer, …) is able to play it. It seems to be a some ...
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1answer
157 views

FFMpeg No such file or directory

I'm trying to convert a MP4 file to H264 using FFMPEG. Unfortunately, it get a file/directory each time "No such file or directory". I've followed the steps within this link https://video....
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1answer
59 views

Slideshow with ffmpeg results in stuttery, unseekable, incorrect length file

I'm using ffmpeg to show images for different durations in a video: (command taken from example on this page) ffmpeg -f concat -i input.txt -vsync vfr -pix_fmt yuv420p output.mp4 Here what input....
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1answer
32 views

I'm trying to render a MP4 with these settings but it doesn't work

ffmpeg -i Power_1080p.mp4 cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 ...
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1answer
49 views

How to convert .s files to .mp4 files

I have .s video files from a DVR backup. I can only view them with an MCD player. I need the videos in a format like .mp4 or .avi or any other format so that I can process them. I have tried using ...
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1answer
79 views

FFmpeg: Zoom with xfade filter doesn't work

I need to create a video with the centered Zoom In (Out) effect and xfade Here is the command with which I've tried to do it ffmpeg -y -r 25 \ -loop 1 -t 6 -i image1.jpg \ -loop 1 -t 6 -i image2....
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1answer
239 views

FFmpeg: Video with crossfade slides and Move up / Move Down effect doesn't work correctly

I'm creating video from the images which have different sizes and orientations. Actually, I need to do video slides' animations based on the image orientation (aspect ratio). So, let's say I have 4 ...
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2answers
199 views

There are audio gaps when I join multiple .ts files into a single .mp4 file

I tried using ffmpeg for this, but for some reason there are gaps in the audio. mylist.txt lists all .ts files. ffmpeg -f concat -i mylist.txt -c copy video-all.ts ffmpeg -i video-all.ts -acodec ...
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0answers
33 views

How can I (re-)import the exported queue into Handbrake?

I had a queue in Handbrake, it was pointing at files on my D-drive in the NEW Movies folder. Now I want to make it point at video files on my E-drive, in the Old Videos folder. I exported the queue ...
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0answers
169 views

ffmpeg: rtmp stream ends after 15min with this

[flv @ 0x5560c4940c80] Too large packet with size 192893402 >= 16777216 av_interleaved_write_frame(): Invalid argument ...
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0answers
105 views

FFmpeg Syntax to Concatenate PNGs into H.265 MKV

I have checked the FFmpeg documentation for concatenation, H.264, and H.265. As instructed, I have assembled pnglist.txt, containing lines like these: file 'D:\Folder\Screenshots\scr2020-01-01-...
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1answer
90 views

Phone got hung while shooting a video- How to get the mp4 file from the “.mp4.tmp0” file?

Title says it all, I was shooting a video and suddenly the phone got hung. I waited a few minutes with no avail, then had to reboot the phone. I then went to the Camera folder, and saw a file with the ...
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17 views

Can force ffmpeg to force specific size GIF for any size of mp4 input video size?

i like to know how could i force ffmpeg to force specific size GIF for any size of mp4 input video size. my sample command for this is here: ffmpeg -i vokoscreen-۲۰۱۹-۱۲-۲۱_۱۳-۳۴-۳۷.mp4 -vf fps=3,...
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1answer
123 views

From m3u8/ts files to mp4

I have a bunch of ts segments locally, with the corresponding m3u8 playlist. Now, I would like to reassemble the mp4 file, losslessly. I tried using ffmpeg, but I don't understand: The difference ...
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0answers
115 views

FFMPEG Concat Video, Add Subtitle & Logo [duplicate]

I have two videos, one PNG logo and one subtitle file (.ass) What I'm trying to achive is to merge all these into a single mp4 file. I can do the logo and subtitle with a single video, but I would ...
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1answer
176 views

ffmpeg stuck in generating thumbnail of video

I'm currently writing a script to create thumbnails of videos in a folder, but as soon as ffmpeg hits a .mov video, it gets stuck. The videos were taken on an iphone at 4k 60fps and can be played back ...
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1answer
137 views

Extracting AAC LC audio from mp4 using ffmpeg

Here is the info of the file that I am working with General Format : MPEG-4 Format profile : Base Media Codec ID ...
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0answers
168 views

handbrake failing to encode an flv file

using fast270p30 preset for mp4 activity log: XPC: Service did report an error [11:09:08] macgui: Error domain: NSCocoaErrorDomain [11:09:08] macgui: Error code: 4097 [11:09:08] macgui: Error ...
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0answers
116 views

Combining MJPEG AVI with PCM WAV and encoding using H264

We are trying to set up an experiment where the subject will listen to auditory stimuli while watching a movie. We generated the WAV audio files using a PCM codec (pcm_s16le). The AVI video was ...
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0answers
22 views

Convert .arf in CentOS

I am pretty close to converting this .arf file but I am missing some syntax. Hoping to get help here. This is where I am currently at with this task: https://pastebin.com/6US1KaJH Original ...

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