Specific issues with encoding video to a certain format, also related to [video-conversion]

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14 views

Bit rate reduction when converting 60fps footage into 30fps?

I'm shooting at 60fps, the result is video playing back normal speed but displaying 60fps. I then have stretched the clip so that i get 30fps playback speed with a slow motion clip twice as long as ...
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0answers
15 views

How to: Add Chapters, Sections, markers to video files to help direct access, skipping & fast forwarding?

How to: Add Chapters, Sections, markers to video files to help direct access, skipping/ fast forwarding? How to add “chapters” or “bookmarks” to movies? The above similar question was for Mac only, ...
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1answer
34 views

How can I compress video by taking advantage of its static content?

I have an HD video that is a presentation, so it consists mostly of still images. It's a 50 minute, 200MB MP4 file, downloaded from YouTube. Is there a way to take advantage of the static nature of ...
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48 views

FFMPEG motion compensation and search

I'm trying to modify the motion detection part of FFMPEG. What I want to do is to extend the search space, so that whenever the macroblock hits the rightmost edge of the frame, I need it to still move ...
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0answers
21 views

How to add background multi images with video overlays

i want to add multi images(image-xxx.png) to video background and add a video overlay, pls tell me code ffmpeg? Images : image-001.png, image-002.png, image-003.png,...image-900.png Demo image: ...
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31 views

FFMPEG || Converting CCTV raw .264 footage files

image of the log below is the text Hi I want to convert 264 footage files to .mp4. The problem is these files came with a player but unfortunately that player is not working on my pc, hence I thought ...
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13 views

VP9 containers similar to MPEG-TS

I know that an MPEG-TS file can have its beginning cut off by a hex editor and still be playable because it repeatedly writes the headers throughout the file. Is there something equivalent that ...
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43 views

Scaling and frame-rate issue on overlay video ffmpeg

I am able to use following command to add webcam overlay on desktop recording. ffmpeg -y -rtbufsize 100M -f gdigrab -framerate 20 -offset_x 0 -offset_y 0 -video_size 1250x750 -draw_mouse 1 -i desktop ...
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1answer
92 views

Encode h264 with FFMPEG that works across all browsers and devices (windows/mac/iOs/Android)

I want to encode images with FFMPEG to a h264 video file that will work on Windows Browsers and Mac Browsers and iOS / Android devices to display in HTML5. Is there a way to do that using one encoded ...
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1answer
218 views

Installed w10, got only directx 9Ex

I installed w10, dxdiag is showing that it has directx 9Ex What happened to dx 12, 11.1 11.0 or even 10? how can it bundle such an older dx version? If higher dx versions are there in the ...
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9 views

How to save as a Video-TS-BUP using DVDShrink

Using DVD Shrink 3.2 I compressed a video that had been converted from MP4 using ConverXtoDVD, however after it was compressed it appeared in my G drive in a format that would not play rather -by ...
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21 views

How does motion estimation work?

I am trying to understand the basics of video compression. I have found many resources addressing this particular subject, but somehow, I haven't clarified it yet on my mind. How does motion ...
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22 views

How to smooth out jaggy lines with AviSynth?

I have a quite crappy quality video in 480p, I then transcode it with AviSynth and MeGUI. I use a few scripts to enhance the quality, as well as upscaling the video to 720p. As you can see in the ...
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22 views

PSNR-HVS-M - Between-coefficient contrast masking of DCT basis functions

So there doesn't seem to be much material on the internet regarding these PSNR variants. PSNR-HVS: Peak Signal-to-Noise Ratio taking into account Contrast Sensitivity Function (CSF). While I don't ...
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1answer
32 views

How can I merge audio and video stream with delay

Let's say I have audio.m4a and video.m2v and the video stream starts approx. 13 sec with the expected sound output but my audio.m4a immediately. So I have to merge it with a delay! I tried already ...
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1answer
49 views

FFmpeg and pressing d during encode, how to continue?

I am encoding a huge video which takes forever. I'm using Windows and a command prompt. And I accidentally pressed d while the window was active. That seems to have triggered some kind of debug mode. ...
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2answers
206 views

Settings For ffmpeg For Best VP9 Quality for Web Publishing

I have video in Apple ProRes 422 format which I plan to encode to Google's VP9 for publishing on the Web. The source is: Stream #0:0(und): Video: prores (apcn / 0x6E637061), yuv422p10le(bt709), ...
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38 views

Windows Movie Maker file size

I'm using ShareX to make x.264/MP4 tutorial videos in which there is very little motion. Most of the time I'm just typing and highlighting text. I'm getting reasonable file sizes. I edit the videos ...
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51 views

How to display MPG videos in the Windows 10 Photos app?

The built-in Windows 10 Photos app does not display thumbnails of MPG videos when I'm browsing folders or albums. I recorder these "problem" files with my old Sony DCR-SR62E cam. All is ok for MP4 ...
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2answers
78 views

Is there any advantage of reencoding a 480p video as 1080p?

To be specific, I mean importing a 480p video into Movie Maker and exporting it as a 1080p MP4? Is there an advantage?
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1answer
84 views

ffmpeg video encoding never begins with -ss and -t flags

I'm trying to cut a video in two parts using two commands: ffmpeg -i "a.mkv" -c:v libx264 -preset slow -crf 8 -c:a libfdk_aac -vbr 5 -ss 00:03:30 -t 00:01:30 "h.264/a1.mp4" ffmpeg -i "a.mkv" -c:v ...
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1answer
112 views

How to cut video files by frame

Does anyone know of a software that could be installed/compiled for linux that is able to cut video by the frame? Thanks.
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1answer
60 views

g_timebase.den out of range

I have a motorola moto xt1225 smartphone and recorded a video I am trying to encode for VP9 webM using ffmpeg with Ubuntu 15.10. This is what ffprobe output about my input video: ffprobe ...
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1answer
93 views

Cannot run video on Android devices after converting it with ffmpeg

I am converting video with ffmpeg, but after conversion it does not run on android devices it shows cannot play this video the code for conversion i am using is: exec('D:\wamp\bin\ffmpeg.exe -y -i D:/...
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1answer
632 views

ffmpeg settings for VHS mpeg2/mp2 to H264/MP4 VBR conversion and reducing file size

My input is as follows: Input #0, mpeg, from 'D:\Videos\2015.mpg': Duration: 01:49:08.74, start: 0.220000, bitrate: 4940 kb/s Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg), ...
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1answer
28 views

Is there a way to determine resolution of a video using its bitrate?

I have a use case where I need to determine the resolution of a video depending on its bit rate data e.g. 236k, 668k, 1299k, 1900k etc. I also have data about its dimensions e.g. 320x240, 480x360 etc....
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2answers
248 views

ffmpeg encoding to VP9 results in Google Chrome-unplayable video, while to VP8 works

Plenty of time passed, since I have encountered the problem, specified in the subject. I tried multiple ffmpeg static builds, have built it from Git repository myself with different flags and on all ...
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107 views

(FFmpeg) Concatenation with text files error, “TEXT.txt:Invalid argument”

In Concat.txt, I listed out the files to concatenate by: file 'Vid_1.mp4' file 'Vid_2.mp4' In my code, I simply use: ffmpeg -f concat -i Concat.txt -c copy OUTPUT_VID.mp4 Concat.txt and the ...
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1answer
238 views

FFMPEG Command to apply VHS like effect on Video

I want to apply VHS like effect on my video. Please advice me FFMPEG command for same. Thanks
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35 views

Writing ffmpeg result to pipe (e.g. stdout) produce different file than when writing to file

I convert video to another format using ffmpeg: ffmppeg -i somefile.*** -f avi somefile.avi and everything works fine. But i need to write output to pipe, so (simplified example): ffmpeg -i ...
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2answers
129 views

ffmpeg overlay image on video loses quality and sticks - any alternatives?

I need a better way to overlay images on video. Currently I am using this: ffmpeg -i input.mp4 -shortest -loop 1 -i 57982344.png -filter_complex "[1:v]fade=t=in:st=5:d=1,fade=t=out:st=10:d=1[over];[...
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1answer
318 views

How to correctly use x265 lossless parameter with avconv

x265 has a lossless mode which is used for ultra-high bitrates with zero loss of quality. I tried using this mode with avconv as follows: avconv -i input.mp4 -c:v libx265 -x265-params lossless -c:a ...
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0answers
102 views

Codec missing powerpoint; how do I get get my media to play?

I designed a presentation pull of interconnected audio & video files in 2013. Edited since in 2007 and most of my media wont play. Tested in 2010; It offers to upgrade the media and then says ...
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1answer
465 views

Handbrake doesn't keep Hi10p and HEVC after conversion

Handbrake is a great tool for me to convert media files. I noticed that my original video file (mkv, 1080p, Hi10p, HEVC) lose some quality after conversion (mp4, 1080p, 8-bit, AVC). What I've ...
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2answers
211 views

Best Practice/suggestions for capturing/encoding/formatting VHS video?

As a personal project for my family I recently purchased myself a Composite-USB converter in order to preserve many of the family's old home movies on VHS. Now, the proprietary software that the ...
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2answers
395 views

unable to find a suitable output format for 'ΓÇô'

I'm trying to encode videos for mpeg dash streaming, I used the following command (I bring it from this article: http://blog.streamroot.io/encode-multi-bitrate-videos-mpeg-dash-mse-based-media-players/...
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2answers
186 views

Cut an FFmpeg video based on frames not a timecode

I want to cut a video with FFmpeg using something similar to the code below: ffmpeg -i movie.mp4 -ss 00:00:03 -t 00:00:08 -async 1 cut.mp4 However I want to specify -ss and -t in frames instead of ...
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0answers
39 views

Error when adding silent channels to ProRes file in FFMpeg

I'm trying to follow this guide to build a usable 5.1 audio for a piece of hardware with specific needs. When I run the command: ffmpeg -ar 48000 -acodec pcm_s24le -f s24le -ac 5 -i /dev/zero -i ...
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1answer
337 views

why is mpeg4 encoder faster than libx264 using ffmpeg

I have been padding mp4 videos so they can become of the size 1920x1080 instead of 1920x800. I used initially used mpeg4 encoder using ffmpeg, the encoding was quick but the size of the file was more ...
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1answer
299 views

Merging four videos with different resolution in a Grid with ffmpeg

I want to marge four videos in to one as show below. I have achieve the correct output given all the videos have the same resolution. But I get an undesirable result with different resolution. See ...
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1answer
1k views

Setting the profile level for libx265 using ffmpeg

I'm trying to set the profile level of libx265 to mainstillpicture using ffmpeg. But I can't seem to do so. I'm basically trying to encode every frame as intra frame (only spatial encoding) with no ...
0
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1answer
395 views

Specifying parameters to create videos for ffmpeg's concat demuxer (to avoid a large re-encode)

ffmpeg can be used to concatenate files together: If you have media files with exactly the same codec and codec parameters you can concatenate them [...] (emphasis mine) My intention1 is to ...
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1answer
111 views

FFMPEG no audio in final output

I have the following FFMPEG command working. ffmpeg -y -i slide.mp4 -f lavfi -i "color=c=black:s=1920x1080:r=25:d=1" -filter_complex "[0:v] setpts=PTS-STARTPTS [main]; \ [1:v] trim=end=3,setpts=PTS-...
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187 views

Hardware video encoding with ffmpeg

I need to compress Full HD videos with ffmpeg with normal pc hardware. Encoding should be some sort of H.264 or Mp4 (quality wise). What hardware do I need for fast encoding times? Is a good CPU or ...
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1answer
794 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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2answers
3k views

Re-encoding in FFMPEG using the exact same settings as the input file

I have a use-case where I take a few MPEG-4 files, trim them and concatenate them in to one file. I have a second use-case where one of those files are trimmed and also cropped/scaled, these files ...
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0answers
2k 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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1answer
170 views

Does x264 support time-based rate control constraints?

I’m aware of techniques to give the encoder freedom to ramp up bitrate for relatively complex sequences, but this has the consequence of inflating the overall bitrate compared to whatever was desired ...
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1answer
204 views

DRM a Custom video

I have a video which is a matroska file (mkv). I wish to DRM protect the video to stop users from re-encoding the video or editing it. Meaning original video gets DRM: user can download video, ...
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3answers
337 views

combining 1 image + 1 audio using FFmpeg

I want to combine an audio file and one image file into a video. Output will be in .webm format so I will be using libvpx. The video must have one frame with the best/lossless quality. So far I have ...