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

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1answer
27 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 ...
0
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1answer
48 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.
0
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1answer
36 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 ...
-3
votes
1answer
51 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 ...
1
vote
1answer
159 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), ...
0
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1answer
22 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 ...
1
vote
1answer
97 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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0answers
68 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 ...
-1
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1answer
104 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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0answers
24 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
76 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 ...
3
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0answers
179 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
73 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 ...
0
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1answer
165 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 ...
0
votes
2answers
109 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
219 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: ...
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2answers
101 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 ...
2
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0answers
34 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 ...
1
vote
1answer
198 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 ...
1
vote
1answer
191 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 ...
0
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1answer
537 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
229 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
74 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] ...
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0answers
140 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 ...
1
vote
1answer
478 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 ...
4
votes
2answers
2k 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 ...
0
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0answers
49 views

How to setup WDE-4220B ip video encoder?

I have WDE-4220B MPEG-2 Encoder with IP Output. Can anyone explain how should the setup/installation of this encoder be done? Obviously there is a software to use but I even don't know how to setup ...
0
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0answers
780 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
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0answers
19 views

Megui shows error after avi upload

Hi Guys Im struggling with avi source into avisynth in Megui. I havent taken audio out but figured I could just put same file into audio input. However I read so many different solutions and I should ...
0
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0answers
135 views

Flash player seek not working when ffmpeg encoded with gop(-g) = 1

I am trying to deliver video content with frame-by-frame viewing via the SMP Flash player. For encoding, I am using FFMPEG with the x264 video codec for files with .mp4 containers. I am using the ...
4
votes
1answer
103 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 ...
0
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1answer
119 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, ...
0
votes
3answers
232 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 ...
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0answers
244 views

How can I make a video “seekable” using ffmpeg when played in VLC player?

I have a .mkv video with the following properties: Input #0, matroska,webm, from 'DEMO.mkv': Metadata: ENCODER : Lavf56.4.101 Duration: 00:00:56.37, start: 2.333000, bitrate: 2032 ...
2
votes
1answer
282 views

What ffmpeg command line produces video more compatible across all devices?

So i have users saying H264 videos MP4's dont play audio on Apple's IPad and i struggle to get MP4 videos to play properly on Android too. There are two different command lines what command line is ...
0
votes
1answer
63 views

Converting a large MP3 to video

I have 6 MP3 files that are between 1.2GB and 2.8GB in length. I also have 6 image files. I want to make 6 videos using those 6 MP3s and images. I have tried using uMusic to merge these and while ...
2
votes
1answer
456 views

Swapping index of an MP4 file with FFMpeg

I run a web application which provides a few videos on it. Those videos are being displayed with a flash-video-player. Unfortunately, the index of those container-files is at the end of the file, so ...
1
vote
1answer
1k views

ffmpeg says that “'.mkv' is not a suitable output format”

I have trouble with ffmpeg, I want to do a two-pass encoding, plus denoise and deblock if possible. This is a command I thought would work but I am getting all sorts of problems: ffmpeg -y -i ...
0
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1answer
250 views

Cut video after certain time?

So I have found out how to cut a video at a specific time frame by using the following command ffmpeg -i input.wmv -ss 00:00:30.0 -c copy -t 00:00:10.0 output.wmv ffmpeg -i input.wmv -ss 30 -c copy ...
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1answer
3k views

Nvidia CUVID video hardware acceleration

I have Nvidia Quadro NVS 140M GPU (G86) in my laptop. Last time when I was installing video codec pack I could turn on Nvidia CUVID hardware video decoder features at some point of configuration. I ...
0
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1answer
35 views

Is it possible for ffmpeg to encode with a spatially variable bit rate?

I would like to reduce the overall bitrate of a 4K 180 degree FOV video by decreasing detail outside of 60 degrees while retaining it in the center. Is that possible?
0
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0answers
775 views

Which settings should I use on VLC to transcode a video to play on Xbox 360?

I tried to convert a video on VLC a few times to play on Xbox but I can't find the right settings. I used a few formats specified in this page but they didn't work. I also found this page that ...
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0answers
632 views

DVD Flick Video Encoding is usually slow?

I tried to burn my movies using DVD Flick, but when it's burning, it takes so much time to encode the videos. I select the Bitrate as Auto Fit, and encoding as Normal. Is it normal to take so much ...
0
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1answer
63 views

Prevent Blur in Gameplay .mov

So I've been uploading videos of Hyrule Total War onto Youtube, but keep experiencing a bunch of blurring of my video when I move the camera. After recording in FRAPS, the raw footage looks perfect, ...
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0answers
52 views

DVD presence not detected until after Windows Update

I am running Windows 7 with Power DVD. I had a couple of DVDs and I googled to find that The Dark Knight Rises is particularly a frequent evidence the issue. When I insert the DVD into the drive, ...
0
votes
1answer
2k views

Missing reference frame, slice header decode error

I split this (http://www.auby.no/files/video_tests/h264_720p_mp_3.1_3mbps_aac_shrinkage.mp4) video using mp4box command "MP4Box -split 1 shrinking.mp4" into slices of 1 second each. I have following ...
2
votes
1answer
782 views

Encoding H264 with windows ffmpeg results in first few seconds being “blocky”

I am using the following code to transcode a 10mbps high quality 1280x720 H264 mp4 into a lower quality H264 mp4 with our logo watermarked on the video. ffmpeg.exe -i test.mp4 -i watermark.png ...
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0answers
832 views

Difference between downscaling 1080p to 720p in real time and downscaling during encoding?

Suppose a high quality, uncompressed video is re-encoded twice, with almost identical encoding settings at a relatively low bitrate of 4mbps, but at different resolutions, first at 1080p, and then at ...
2
votes
1answer
943 views

Is it possible to embed subtitles in an MP4 with the forced option in MeGui?

I want to show subtitles with my web player (it supports Flash and HTML5). I'm using the .mp4 format and I can add subtitles to the player with an external .srt file, but I want to embed subtitle to ...
0
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1answer
456 views

How to determine 'Output bit depth' of the libx264 library in ffmpeg?

According to the x264 Encoding Guide, the crf scale depends on whether x264 is 8-bit or 10-bit. Supposedly x264 --help shows the Output bit depth. But on Windows ffmpeg -h full doesn't say anything ...