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

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11 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 ...
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0answers
23 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 ...
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0answers
28 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 ...
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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 ...
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0answers
28 views

watermark animated video 10 in 10min [closed]

I need a watermark equal to xvideos. some features: Centered on the vertical Font, font size Animation speed Log in txt (I get progress conversion) The most important: The watermark must pass 10 ...
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0answers
16 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
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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 ...
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3answers
6k views

How do I convert WTV (and DVR-MS) files into a smaller standard format?

The external hard drive on my HTPC is almost full and so I'm going to need to convert a large number of the films recorded from the television (in WTV format) into something smaller. At present, a 2 ...
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2answers
45 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
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1answer
125 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 ...
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1answer
54 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 ...
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2answers
9k views

How to see what command-line options handbrake sends to mencoder

I want to see what command-line options handbrake is sending to mencoder. I looked at the Activity Window and it shows a lot of stuff but not what I'm looking for. How can I find it?
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1answer
29 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 ...
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0answers
40 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 ...
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2answers
8k views

MP4 video from Android phone can't be played in Windows

I took a video on my Samsung Galaxy S2 (Android), it's about 3GB and it can be played on the phone. But after transferring it to the PC is does not play when opened with VLC, QuickTime, Windows Media ...
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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 ...
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0answers
62 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 ...
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1answer
2k views

Sound out of sync after merging multiple mp4 files with Avidemux

I am trying to join (merge) two or more .mp4 files together, without re-encoding. Here is what I did: Started Avidemux 2.5.5. With File->Open, selected Input1.mp4. I received this message - "H.264 ...
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2answers
138 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 ...
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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 ...
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2answers
53 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 ...
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3answers
7k views

How can I get my MKV files to play on a PS3?

I just finished building a video server for PS3 and I am working on converting all of my DVD and Blu-ray to my HDD. For DVD, MP4 files work great, but the PS3 can't play MKV which is what I use for ...
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vote
1answer
3k views

What H.264/H.265 video compression parameters provide DVD-equivalent quality with better compression?

I have got a box of DVD video disks that I seek to get rid of while I'd like to keep the videos by converting them into MP4 files to store them on a hard drive. Considering superiority of the modern ...
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0answers
41 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?
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5answers
570 views

Downloading, Re-encoding, and Joining YouTube Videos

I've downloaded a set of Youtube Videos that are part of the same episode. Currently I've tried converting them into mp4 using ffmpeg and then joining with MP4Box. for f in *.flv; do ffmpeg -i "$f" ...
3
votes
1answer
158 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 ...
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0answers
24 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 ...
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0answers
139 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 ...
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0answers
203 views

Prevent ffmpg from concealing errors during conversion

I'm experimenting with using Audacity to create glitch videos (datamosh and databend are synonyms). So, I create an AVI, pull it into Audacity as raw data, manipulate the stream, and the save it back ...
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0answers
107 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 ...
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4answers
79k views

How can I watch a side-by-side 3D video in 2D?

I have a 3D movie (.MKV), with side-by-side 3D, and it works just fine at home. Now I want to see it at my friend's house, and they don't have a 3D system. Is there any way to crop one of the sides ...
2
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1answer
9k views

Use ffmpeg copy codec to combine *.ts files into a single mp4

I've got a bunch of ts segments described by a single index.m3u8 file: index.m3u8 segment1_0_av.ts segment2_0_av.ts segment3_0_av.ts segment4_0_av.ts segment5_0_av.ts I know they ...
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0answers
201 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 ...
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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.
2
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1answer
180 views

How to emphasize certain words in subtitles using mencoder?

I'm using "mencoder" application to add subtitles to an AVI file. In the subtitles, there are certain words I want to emphasize by making them appear either in bold or in italics. I've tried ...
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1answer
162 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 ...
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0answers
82 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
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1answer
2k views

FFMPEG H264 split demux a stream video

I've got an H264 video (Stored in an 264 file). With ffplay i see that: [NULL @ 00000000003454a0] start time for stream 0 is not set in estimate_timings _from_pts [mpeg @ 0000000000344560] Could not ...
1
vote
1answer
874 views

Reuse transcoding outputs to generate multiple files with AvConv

I am trying to find information about how to transcode a file into multiple outputs in one shot, but I don't seem to be able to. Most of the results I find describe the opposite: merging multiple ...
0
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1answer
142 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
118 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
656 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 ...
4
votes
1answer
9k views

ffmpeg: Could not find codec parameters for stream 0 (Video: h264) unspecified size

I try to convert a video from .raw to .mp4. For this reason I did download, build and install both x264 and ffmpeg. However, command: ffmpeg -f h264 -i output.raw -vcodec copy output.mp4 fails with ...
5
votes
2answers
13k views

Converting AVI encoded file with an IMM5 codec

As part of a legal matter, I received a copy of a security video encoded using what appears to be an 'IMM5' codec, apparently often used by police. I also received a copy of 'BackupPlayer', which can ...
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2answers
140 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 ...
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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 ...
3
votes
1answer
8k views

How to convert MP4 to SWF

Can someone give me the command line parameters for FFmpeg to convert MP4 video to an Adobe Flash SWF file?
0
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2answers
63 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
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0answers
89 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 ...
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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 ...