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

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14 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
87 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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1answer
114 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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0answers
40 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
38 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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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
23 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
567 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" ...
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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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1answer
81 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
23 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
80 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
174 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
89 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
76k 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
8k 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
100 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
5k 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.
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1answer
177 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
101 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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57 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
1k 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 ...
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1answer
864 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
124 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 ...
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1answer
92 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 ...
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2answers
382 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
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1answer
8k 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 ...
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2answers
12k 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
98 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
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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?
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2answers
51 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
64 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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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 ...
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0answers
55 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 ...
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2answers
148 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 ...
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0answers
52 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 ...
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1answer
77 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. ...
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1answer
45 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
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1answer
150 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 ...
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1answer
374 views

AVS Video Converter: Frame Size stuck at 848

I am trying to follow Youtube's recommended frame size for 480p which is 854x480 (more info here) Now using AVS Video Converter, when I try to change the width to 854, it keeps going back to 848. ...
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1answer
90 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 ...
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1answer
77 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 ...
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0answers
94 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 ...
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3answers
844 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 ...
0
votes
1answer
54 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 ...
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3answers
6k views

Lossless extraction of streams from WebM

I would like to extract streams from WebM video files without converting them (re-compression), can somebody recommend any software that can allow this?
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7answers
3k views

How do I convert Quicktime to Windows Media Video?

How do I convert a Quicktime file to a Windows Media Video file on Windows 7? What is the cheapest method? What is the the best method, regardless of cost?