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

learn more… | top users | synonyms (1)

0
votes
0answers
16 views

How to transcode a video to XviD format with GStreamer?

I'm trying to script a GStreamer pipeline to transcode videos to my Meizu M6 miniplayer. I found some scripts to do the transcoding with mencoder, but would like to do that with GStreamer. The device ...
0
votes
1answer
14 views

overlay with video offset not starting audio with same offset

I have a video with audio (overlayvideo.mov) that I'm overlaying over another video (basefilem.mp4) and I'm starting the overlay at 20 seconds. The output (finalvideo.mp4) looks great, but the audio ...
0
votes
0answers
50 views

using ffmpeg to repair corrupted MP4 video files from Xiaomi Yi

did not know wether to create a new thread or to post in an existing one. Decided for the first option, as my case seems to be a little different as I do not have one video corrupted but plenty of ...
0
votes
0answers
34 views

Upload Video to Instagram made with Windows Movie Maker

I've made a video using Microsoft's Windows Movie Maker and I've tried saving it as "Recommended for this project", "Android Phone (Medium)" and iPhone. It saves the video as a .mp4 using the H.264 ...
0
votes
1answer
18 views

Compress videos to a specified file size?

I have 3 video files that are 50 MB, 100 MB and 150 MB. I want to compress each to 25 MB each. I understand the larger videos will sacrifice more quality. Is there any software that can compress ...
0
votes
0answers
17 views

Lossless splitting and concatenation of video

I would like to split a video file into several video files in a way that would make it possible to recreate exactly the same original video file later. Can it be done? The videos I have have the ...
0
votes
0answers
9 views

how to batch convert MP4 files to dvd format (video_ts) [duplicate]

Does anyone know how I can convert (several hundred) MP4 files TO DVD format (video_ts and audio_ts files), and preferably then have them in iso files ready for burning? I have googled and can only ...
-2
votes
2answers
48 views

ffmpeg how to convert mkv vp90 to mp4 h.264?

i would like to ask how to convert an .mkv VP90 to an mp4 h.264 ? I downloaded .mkv video from youtube and it's using VP90, VLC is unable to read VP90, so i have to convert it to my usual H.264, in ...
1
vote
1answer
31 views

How can I automatically segment a mp4 video based on a list of frames

I have a 7 hour long h.264 video made up of 1600 shorter videos and I have a csv file with a list of frames at which I need the longer video to be cut at. Is there any way that I can automatically ...
0
votes
1answer
55 views

ffmpeg to convert videos into one

ffmpeg has a wiki on Concatenate at https://trac.ffmpeg.org/wiki/Concatenate It does concatenation without any conversion. I'm wondering if it is possible to do the concatenation WHILE doing the ...
0
votes
0answers
45 views

Convert videos to MP4 iPad (h264 and aac), but leave video codec alone if h264 already

I want to batch convert video files with different extensions and convert them to MP4. If the video codec is already H.264, I want to copy it and convert the audio only if it is AC3, MP3, or anything ...
0
votes
0answers
21 views

Why concating two videos with ffmpeg (5s and 33s) produce 4m34s video in slow motion

I am developing a service to concat a video (mine) with a another from a user (he/she upload it) and return to user. First I tried to use Concat demuxer because I don't want to re-encode videos if it ...
1
vote
0answers
75 views

Corrupt MP4 file: ffmpeg codec, global header, and dvvideo errors. Can it be repaired?

So, I have a number of corrupt MP4 files (some corrupt AVI files, too, but I believe that's a different problem). They seem to have gone corrupt when I had an external hard drive that they were on ...
0
votes
0answers
49 views

mkv to mp4 automatic conversion

I have two scenarios here that I'd like to overcome: 1- I have a folder that's full of folders that are full of mkv and mp4 files. I want to use Handbrake, VLC or any other appropriate program to ...
0
votes
2answers
55 views

Having trouble understanding ffmpeg -map command

I'm trying to copy video/audio from an mkv container to mp4. When I run ffmpeg -i input.mkv -c:v copy -c:a copy output.mp4 I'm given no video with polish audio. There's only one video stream, stream ...
0
votes
0answers
48 views

How to convert a video from 2D to 3D?

I have some videos and movies that I would like to watch with my Google Cardboard. However, I only have them in mp4 format. How can I convert them such that it can be watched with Google Cardboard?
3
votes
1answer
179 views

FFMPEG mkv to mp4 conversion loses subtitles

Currently trying to convert my mkv library to mp4 (Iphone 6 plus) I've managed to get to mkv to mp4 conversion correctly, but I'm missing the subtitles part (SRT) Here's my code: dir/b/s *.mkv ...
1
vote
0answers
25 views

Getting same quality with “baseline profile”?

I have a couple of videos taken in H.264 using the high profile and I want to convert them into a baseline profile while keeping the same quality and size so, that they can be easily played on an ...
0
votes
0answers
155 views

I'm trying to extract frames from an MP4 using VLC; it is only extracting frame one

I'm trying to extract frames from an MP4 generated by a Swann security camera using VLC. I'm using the following command line string: vlc C:\video\01.mp4 --video-filter=scene --vout=dummy ...
1
vote
2answers
146 views

Why are h264/ac3/mkv videos showing up as “motion jpeg” with ffmpeg?

I use xmedia recode, which uses ffmpeg, to convert these videos using "copy" video and "convert" ac3 -> aac, with an mp4 container. For most videos this works fine, and is really fast. However some ...
0
votes
0answers
225 views

Microsot Visual C++ Runtime Library Error upon Converting a File through VLC

I always used HandBrake for video conversion (compression) which works great, but today I found an answer on quora which explains how to convert videos through vlc, when I converted through VLC, the ...
0
votes
0answers
89 views

Video Codec Problems

I have been having a problem with a file with the PRDY and undf video codecs. Is there any way to open them? thanks Brett 2010 iMac VLC version 2.2.1
0
votes
1answer
144 views

ffmpeg changes audio bitrate when transcoding from MKV to FLV

I have one file - sample.mkv ========================================================= File: sample.mkv Width: 854 pixels Height: 480 pixels Aspect ...
0
votes
1answer
123 views

Basic conversion of sequence of images to avi with avconv

I'm trying to convert sequnce of images to small avi. Each image should be shown 2 seconds. I'm using this basic command sudo avconv -r 0.5 -i test%05d.jpg out.avi I get the output, but it shows ...
2
votes
2answers
726 views

What is the CORRECT way to fix keyframes in FFMPEG for DASH?

When conditioning a stream for DASH playback, random access points must be at the exact same source stream time in all streams. The usual way to do this is to force a fixed frame rate and fixed GOP ...
0
votes
1answer
174 views

How to generate thumbnail image from HandbrakeCLI command during conversion?

I have ffmpeg command line that creates thumbnail image from a video. This works nicely as I can choose the timestamp and the size of the image that I want. -r 1 -t 1 -ss 2 -s cga "%2/%32.jpg" This ...
0
votes
0answers
23 views

avconv - how to use two input files for transcoding to maximize quality

Let's say I have two video files encoded in lossy formats, for instance sample.mp4 (H.264) and sample.265 (H.265). Now I want to transcode to sample.webm (VP8). We all know transcoding degrades video ...
1
vote
2answers
153 views

Convert all files in directory using FFMPEG

I'm trying to write a script to convert all the files in a directory to m4v, whilst trying to keep similar (if not the same) quality and compress the file to reduce the overall size. I've pieced ...
1
vote
0answers
109 views

FFMPEG: Windows binaries with globbing (libavformat) support?

I am struggling to get ffmpeg to combine a bunch of images in to a video which have a format with a full 17 digit timestamp. 17 digits is well beyond what -i %d will support. So I want to use ...
2
votes
0answers
90 views

Copy creation_date metadata when converting video with ffmpeg

I want to convert a bunch of old videos to H.264 to save space, but ffmpeg always drops the creation date, no matter what fancy -map_metadata variations I use. This is obviously a huge dealbreaker for ...
0
votes
0answers
22 views

When using Super Converter, I can't change my recording (.flv) to anything

When I try to convert my screen recordings to anything from .flv in Super Converter it gives me an error saying that it doesn’t have any video and that .mov or .wmv needs video. But when I use VLC to ...
0
votes
0answers
62 views

ffmpeg scaling input video converting it from mov to mp4 and watermarking in the center

I'd like to scale videos comming from my DSLR with ffmpeg to a resolution of 960x540, then convert the container from mov to mp4 and after all of these things I'd like to watermark that video by ...
0
votes
2answers
64 views

Is there a way to generate left and right camera views from one camera video

I have only one video available from one camera. Is it possible to create left and right camera views from one camera video and could be viewed from oculus rift-VR. No need for audio
0
votes
0answers
55 views

How can I extract a single GOP as images from a video?

I need to extract a complete GOP (group of pictures) from an MPEG-4 video and turn every frame in that GOP into a full BMP image. For example, I imagine something like this: ffmpeg -i Input.mp4 ...
0
votes
2answers
183 views

ffmpeg: how to convert mp4 to mp4?

The subject is correct ;-) My problem is this: I have a set of MP4 files; all of them play with vlc on my Ubuntu box. But when copy them to USB; and want to play them from my TV ... some work; others ...
1
vote
1answer
88 views

Cutting out two parts from the middle of a video with ffmpeg

I have two files, rec.avi and audio_edited.wav, and what I'm trying to do is take the parts 00:30:50–01:42:56 and 02:16:55–04:03:10 of each file, concatenate those and encode them into an WebM file. ...
-1
votes
1answer
48 views

Folder full of .jpg files. Batch convert each to a video with duration of X seconds

I am looking for a way to mass convert a folder of image files to a video (one per image), where each of the images is taken and placed on the video for the full duration of the video, e.g. 30 ...
0
votes
1answer
179 views

Ffmpeg upscale and letterbox a video

I have a video with that is 480x360 in resolution, what I want to do is upscale this video to 1280:720 and not loos the original videos aspect ration ( letterbox the left and right side) So I know ...
1
vote
1answer
89 views

How can I configure ffmpeg to encode h.264 video with a specific log2_max_frame_num_minus4 value?

I am working on a project where we are splicing HLS video segments. The HLS standard conveniently includes an #EXT-X-DISCONTINUITY directive to signal that the player should be ready for video that ...
0
votes
0answers
160 views

FFMPEG Lossless Video Output Options

I am looking for lossless video output options from FFMPEG that can be viewed without any special codecs or special players such as VLC. I want a basic use to be able to open up the video with a ...
0
votes
1answer
110 views

Create DVD from MP4 using FFMPEG?

I want to convert an MP4 video into a DVD using a Linux-based process such as FFMPEG. Currently we're using Nero to burn MP4 to DVD video, but I want to automate the process as much as possible. When ...
0
votes
1answer
60 views

How to sync splitted mkv + external srt with ffmpeg?

I want to convert MKV audio from DTS to MP3 and split the file at the same time. The problem is: I need an external .srt but when I split it, the second file is desynced from video. Example: ffmpeg ...
0
votes
1answer
12 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 ...
0
votes
3answers
7k views

M3U8 file to MP4 conversion?

Can an M3U8 video file be converted to MP4? I have had no luck finding a file converter that can do this since the M3U8 file is really an Audio playlist with many smaller files in a folder.
0
votes
1answer
157 views

Video takes long time to start

I use this command to convert video using ffmpeg on phpvibe: unfortunately the videos take a long time to start on firefox so I'm looking for a command to move the video's atom to the beginning so ...
1
vote
1answer
199 views

batch file for hardcoding subtitles in multiple videos with ffmpeg

My question at the top: What is the correct way to refer to a dynamic file name for the ass filter when using -filter_complex in ffmpeg? The story and my attempt: I have a folder that contains ...
0
votes
1answer
84 views

Connecting PAL camera to pc and working with the feed

I have an ancient analog camera which has the classic PAL analog output. I want to get this feed, display it on the computer's monitor and save the stream on the pc hard drive. I know that if it was ...
0
votes
1answer
120 views

HandbrakeCLI convert audio only

My TV reads video files only with AAC or MP3 audio tracks. I am trying to use HandBrakeCLI.exe to convert audio tracks only preserving video quality, but it takes as mush time as converting the whole ...
-2
votes
3answers
1k views

Conversion from WebM to MP4 in Ubuntu is slow and bad quality

I have used the command ffmpeg -i input.webm -q:v 10 -c:a copy out.mp4 I also tried using avconv instead of ffmpeg. The conversion is successful but the quality is bad. Also it takes a lot of ...
1
vote
1answer
126 views

Proper DVD rip for serving via UPnP

I am a happy user of minidlna (version 1.0.24) on an old Mac Mini G4. It does work quite well in my environment. Since minidlna does not allow transcoding, I would like to rip a set of DVDs (mostly ...