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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0answers
19 views
Create thumbnail images at some interval from a video without reading whole video [FFMPEG]
Short Problem: I want to take some screenshots image from a video url at some specific times but I don't want to read the whole video.
Let's say I have a video stored in some url (like https://www....
1
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1answer
42 views
How can I batch process Camtasia Studio's .camrec files?
I have several Camtasia Studio's .camrec files. I would like to convert each of them to a .mp4 file, using the same conversion settings (audio/video encoding parameters, etc.). How can I achieve that ...
1
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2answers
40 views
How can I batch convert videos into 4:3? [closed]
I've got about 112 videos, each ~240MB. All of them are in 16:9 and I'd like to change them to 4:3.
What's the most nonresource-intensive and convenient way I can accomplish this without losing any ...
1
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2answers
57 views
Extracting audio from mp4 has less bitrate
I'm using ffmpeg -i input.mp4 -c:a copy -vn -sn output.m4a
to extract audio from an mp4 file. However, when I open the mp4 in Spek, it shows 255kbps AAC and the extracted file is only 200kbps.
Also, ...
0
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0answers
24 views
FFMPEG: After inserting multiple subtitle files into a MKV, it only saves the language metadata of the first 4 files
I know this is a very specific question, I've spent the entire morning figuring out how to insert srt subtitles into a mkv file using FFMPEG
And I sort of figured out how to do it and it works.
I'm ...
0
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1answer
39 views
I need to make a .MP4 file with the XVID codec. and i simply can't find a way to do it
My client wants 2 files: .avi and .mp4 in 1080p with the XviD codec.
The .avi was easy, I installed the XviD codec from the official website and exported the .avi using After Effects.
The .mp4 on ...
0
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0answers
20 views
Using FFmpeg, convert multiple .mov files to .png files [duplicate]
Very new to linux so apologies in advance for this!
I want to use ffmpeg to extract .png files from each .mov at a rate of 3 frames per second and create a new file for each set of extracted .png ...
0
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1answer
23 views
HDMI to S-Video converter and Linux produced green glitches when recording with mencoder
I have HDMI to S-Video converter: Mini Portable USB 2.0 Port HD 1 Way HDMI 1080P Video Capture Card For PC Laptop.
So it has:
HDMI input (connected to computer so I'm willing to record video output ...
0
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1answer
62 views
How to increase video's FPS and speed correctly with ffmpeg?
I have a 5 fps video with keyint 120 2.5 hours long that I want to speed up 6 times, making its fps=30
I did it with this command that I found somewhere on this website
ffmpeg -i "...local_Record....
0
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1answer
31 views
Decode/encode 4:2:2 with a 4:2:0 decoder/encoder
Similar to Reinterpret AVC bitstream as HEVC.
Some hardware codecs support 4:2:0 for 4k but not don't support 4:2:2 even for SD, with far less data. Can you trick a codec to encode 1920x1080 4:2:2 ...
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0answers
45 views
Reinterpret AVC bitstream as HEVC
I understand HEVC to be a superset of AVC. HEVC allows more 'tools' to extract more compression out of a video sequence. Is there a tool that converts an AVC stream to HEVC, completely ignoring the ...
1
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1answer
31 views
Efficently join audio tracks from avi to mp4
I have around 100 videos (episodes of a series) twice.
[avi] 720p video resolution with my preferred audio tracks
[mp4] 1080p but the wrong language
Obviously, I ...
0
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0answers
20 views
Can I delete all files but MovieObject.bdmv?
I have a couple questions about creating MKV files from BDMV files.
Is the only file I need MovieObject.bdmv? Can I delete the rest of the files?
0
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1answer
65 views
HLS vs HTTP format codes in youtube-dl
I am using youtube-dl on windows 10 64 bit. I am new to this program. I checked the available formats for a video from dailymotion like this:
youtube-dl -F "http://www.dailymotion.com/video/". In the ...
2
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1answer
90 views
Getting an “ignoring title (too short)” error when using Handbrake to convert multiple files
I am trying to use Handbrake to convert multiple videos files to mp4.
I have turned on "Automatic File Naming", set the default path and changed thhe file format to {source}.
Adding an entire folder ...
0
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1answer
64 views
Why is FFmpeg video splitting of 595-600 seconds slow compared to 0-5 seconds? [duplicate]
I have to split a 4K 10 minutes video into 120 small video files, each containing 5 seconds of duration. I'm using ffmpeg for splitting the video. The splitting take a very very long time and the ...
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0answers
70 views
Converting bgra stream to mp4
I am trying to record video of iOS simulator using the following command;
./fbsimctl stream --bgra --fps 12 - | ffmpeg -f rawvideo -pix_fmt bgra -s 414x736 -framerate 12 -i - -f h264 -r 12 - | ...
0
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0answers
160 views
FFMPEG - convert WMV to MP4 Fails
I tried some other recommended conversion commands but none of them worked. Here's the basic command:
ffmpeg -i wmvfile.wmv somefile6.mp4
Output:
ffmpeg version N-91548-g481741ece0 Copyright (c) ...
0
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1answer
16 views
How to open and edit .wlmp video
I have made a video using Window Movie Maker. I have formatted my computer and lost the program installation files. Now I found that Microsoft stopped supporting movie maker and it is no longer ...
0
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0answers
35 views
VLC record button saves in ASF! How to get back to MP4?
VLC record button saves in ASF! How to get back to MP4?
Using v. 3.x latest offering. ASF is horrible :/
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0answers
33 views
Convert video file using format from another file
To eliminate XY problem, here is what's my situation. I have source YouTube videos in MP4 container. I create voiceovers for them using Sony Vegas on Windows machine and then export them as WAV file, ...
0
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0answers
109 views
Is it possible to pipe and filter the HandbrakeCli output or silence it in Windows
I have a video archive of personal memories organized into lots of folders.
The video files have multiple filetypes and the quality to size ratio is terrible (some are even 20mb/s for a 720p video.
I ...
0
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0answers
115 views
height not divisible by 2 (176x99)
I am trying to convert a .avi file into a .mp4 one using FFMPEG using the libx264 codec.
This is the command I am running:
ffmpeg -i filename.avi -c:v libx264 -crf 19 -strict experimental ...
0
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0answers
45 views
ffmpeg create gif for multiple videos in a folder
I have hundreds of videos in a folder /home/videos/ and I would like to create a gif for each video.
The gif should be comprised of 10 different screenshots across the videos length. So for example ...
2
votes
1answer
90 views
How can I convert an mp4 file to a m2v file using FFMPEG that is compatible with Windows Media Player?
I tried doing this but Windows says the file isn't playable. Playing it in VLC does work.
ffmpeg -i in.mp4 -f mpeg -vcodec mpeg2video out.m2v
0
votes
1answer
151 views
Is ffmpeg's ssim not doing what it should be doing?
Just out of curiosity, I checked two versions of a video file that were NOT re-encoded, just re-muxed. I was expecting ssim scores to be 1.0. Instead, I'm seeing scores of <1.0.
How to repeat:
...
0
votes
2answers
82 views
Explicit timebase with ffmpeg and variable framerates in mp4s
I need to concatenate a number of video files with different framerates to play them with OMXPlayer on a Raspberry PI (the concatenation is also done on the PI).
Both the originals and the ...
0
votes
1answer
100 views
FFmpeg ProRes interlacing artifacts horrible compared to Apple Compressor export
I've been importing my family videos recently. I'd like to archive these videos using ProRes 422.
Compressor works. The videos pop out with hardly ANY visual difference.
FFmpeg, however produces ...
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0answers
35 views
FFMPEG outputting a timelapse video without any frames
I'm new to FFMPEG but have created three timelapses on it (I forgot the commands I used to make them though).
I have ~400 images with consecutive numbering from IMG_1744_EDITED.JPG. I edited the RAW ...
2
votes
1answer
230 views
FFMpeg Video Overlay with Delayed Audio and Video in Background Video
I am attempting to create the appearance of a picture in a picture video using multiple video files.
I've created a .mp4 file using FFMpeg. The video displays correctly in Windows "Movies & TV" ...
2
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0answers
31 views
Is there a way to programmatically read the contents of a subtitle text stream embedded in an mkv file without extracting the track altogether?
Extracting a subtitle track from an mkv would take a bit of a long time, well over a few minutes in the case of huge video filesizes (>10GB), and I think analyzing the text contents of a subtitle ...
0
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0answers
42 views
Media Player Classic (MPC-BE) showing reds different in transcoded video
With Media Player Classic (MPC-BE) I'm getting reds rendered differently after transcoding a video.
These crops show the first frame using. If you look closely the last picture is more orange-y
...
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0answers
71 views
What is the difference between these video codecs?
I'm familiar with general digital video formats, but I'm trying to record my first Patreon videos - which are long (59min) and I'm finding myself completely baffled by format filesizes. I could really ...
0
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2answers
148 views
Why do MPG files take up so much space? Is it an outdated format?
I tried googling this but I didn't actually find any conclusive evidence to sustain this so I'm going to present my case.
A couple of years ago I took the time to convert all our family video tapes ...
0
votes
2answers
45 views
ffmpeg used to extract audio track, video track and then merge them, produces smaller mp4
Here is what I did with "original.mp4" (00:15:22 duration, ~80MB filesize):
Extracted video stream from mp4
ffmpeg -i original.mp4 -c copy -an vid_only.mp4
Extracted audio stream from mp4
ffmpeg -i ...
0
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0answers
41 views
Can ffmpeg be used to reduce encoded file size back to original after OBS+VLC workflow?
Wondering if ffmpeg could help me reduce the size of the resulting file called "OBS_VLC_replay.mp4" which is produced as a result of using VLC to playback a video at x1.3 speed (with audio pitch ...
1
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1answer
322 views
How to efficiently create a best-palette gif from a video portion straight from the web
I've been using for some time this couple of commands to convert a video segment to an animated gif, having ffmpeg calculate the best palette for it:
ffmpeg -ss $START -i $IN_FILE -t $LENGTH -vf "fps=...
0
votes
1answer
59 views
How can I add watermark and set the output bitrate and video size, also doing bulk using ffmpeg?
I was able to add watermark to multiple video using
for %%a in ("*.ts") do ffmpeg -i "%%a" -i logoCopy.png -filter_complex "overlay=main_w-overlay_w-40:40" "Logo\%%~na.mp4"
And now I'm trying to ...
1
vote
1answer
83 views
How can I remove the first 30 second of 40 min video and add watermark also doing bulk using ffmpeg?
I was able to add watermark to multiple video using
for %%a in ("*.ts") do ffmpeg -i "%%a" -i logoCopy.png -filter_complex "overlay=main_w-overlay_w-40:40" "Logo\%%~na.mp4"
And now I'm trying to ...
1
vote
1answer
593 views
FFMpeg Error While Decoding Stream Cannot Allocate Memory
I am attempting to create a picture in a picture video from two mp4 videos.
There is a time offset on the first input file (0:v).
The second input (1:v) file is being rotated 90 degrees.
I am using ...
0
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2answers
547 views
FFMPEG 4.0 Opus Codec Not Enabled?
I just compiled and installed ffmpeg-4.0 on my Kubunut 17.10 laptop, and and I'm getting an error when trying to do conversions using the opus components. It appears that opus is not enabled, and I ...
0
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1answer
185 views
Why ffmpeg increases file size?
I'm trying to encode the video in the same quality in the same format, but the output file is several times larger than the input file. Whyis it happens? I want to fix the encoding errors, but I can ...
0
votes
0answers
189 views
How to output vertical video in Handbrake 1.1.0?
I have a vertical video recorded on an iPhone (one of the rare cases where it makes sense) that I am trying to convert to save storage space. The original is stored as 1920x1080, I assume with some ...
3
votes
1answer
412 views
Tell ffmpeg to drop frames to reduce memory usage?
I'm transcoding real-time footage from a security camera from MJPEG into MPEG2, using ffmpeg.
Unfortunately the machine doing the transcoding can't really keep up (100% CPU use) however it's "good ...
0
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0answers
353 views
ffmpeg WebM to MP4: awful video quality
I'm trying to convert a WebM video coming from a webcam to an MP4 x264 format.
I tried to use this ffmpeg command:
ffmpeg -stats -nostdin -y -flags global_header -i "/home/Foto/incoming-video/2017-05-...
5
votes
2answers
2k views
Change rotation flag in MP4 video (without losing metadata)
I just want to change the rotation flag in a .mp4 video file.
Many similar questions exist, most answers suggest using
ffmpeg -i input.mp4 -map_metadata 0 -metadata:s:v rotate=90 -codec copy output....
0
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1answer
67 views
FFMpeg Sound Lost When Short Overlay Video Ends
I am creating a video file that is 36 seconds long. It is made of three .mp4 files. One video file is the background and the other two videos are overlays. One of the overlay videos ends about 26 ...
0
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0answers
107 views
ffmpeg thumbnail rotation for an mp4 file [duplicate]
I've worked a lot to obtain the following ffmpeg command to rotate clockwise and reencode an mp4 file:
ffmpeg -loglevel warning -stats -nostdin -y -flags global_header -i incoming-video/DSCN3758-ro....
0
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0answers
261 views
Convert BluRay iso to mkv or mp4 without changing resolution? (e.g. using Handbrake)
I've got a .iso file of a BluRay movie, and I want to convert that to a single .mp4 or .mkv file.
After searching around I came across this answer to a similar question. But when I use the given ...
0
votes
1answer
75 views
How to batch remux audio of .MOV files?
I have about a hundred home video files that I am recompressing for archival purposes. I want to convert them all to x264 using HandBrake, but I have a problem with the audio. They all follow this ...
