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

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9 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
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2answers
135 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
12 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 ...
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0answers
46 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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0answers
6 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 ...
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0answers
50 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 ...
2
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0answers
26 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
35 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
79 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
77 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 ...
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1answer
115 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 ...
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1answer
55 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 ...
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1answer
233 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 ...
0
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1answer
342 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 ...
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1answer
80 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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0answers
28 views

How to mix videos created by DosBox into a single video?

When recording gameplay videos. DosBox recording a separate video for each graphics mode. For example Descent switches graphics mode for each time you visit the auto map. So now I have 46 videos ...
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1answer
1k 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 ...
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1answer
26 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?
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0answers
517 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
345 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 ...
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0answers
33 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
37 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, ...
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1answer
612 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
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1answer
458 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
604 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
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1answer
617 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 ...
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1answer
262 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 ...
2
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1answer
206 views

Why does FFmpeg segment_times create webm files with incorrect duration and start times?

I have a MOV file that I want to split into several smaller files (at certain timestamps in a comma-separated list). I'm simultaneously compressing the video into WEBM files. The command I'm using ...
0
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1answer
151 views

How does video encoding bitrate affect duration and why?

Does encoding an uncompressed video into a higher bitrate take longer (than into a lower bitrate)? If so, why - it seems that the encoder should need less effort because it doesn't have to compress ...
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2answers
8k views

How to download online videos [closed]

I have very low bandwidth available on my network. I don't want to watch the video online again and again. Instead I want to download the video for later use. I can download Youtube videos with some ...
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1answer
71 views

Ideal FPS to use

I have a C# desktop application and I am using ffmpeg as a way to 'zip' up a load of jpegs on the client PC and upload it to my server and unzip it. The number of jpegs to zip at any 1 time varies. ...
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1answer
5k views

Shouldn't we always use Web Optimized for Handbrake?

I use Handbrake sometimes to compress video files, and notice that the "Web Optimized" option is not chosen by default, and cannot be set to the default in Options either. But I tried both Web ...
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3answers
1k views

YouTube consistently messes up my video's quality

I'm having trouble encoding a video for YouTube. The content isn't very "compression-friendly" (it's Battlefield 4 gameplay footage), but I'm 100% positive the results could be better. Some links: ...
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0answers
33 views

“Freely positionable” Videos

The following is a requirement for loading a video into National Instruments DIAdem: The videos must be freely positionable, so that DIAdem can display each frame in the videos. Video - DIAdem 2012 ...
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0answers
1k views

ffmpeg minimal requirements configuration for encoding and decoding h264 files

I'm trying to compile ffmpeg with minimal requirements in order to encode/decode with h264. So far my command line configuration is : ./configure --disable-yasm --disable-everything ...
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3answers
18k views

How to generate an MP4 with H.265 codec using FFmpeg?

I want to encode a video file to H.265. The last version of ffmpeg should be support H.265 (Source). However, I could not find any information about the exact command. I do not know, which library I ...
0
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1answer
1k views

Fixing an unmuxed image/jpeg stream from webcam using gstreamer

I made a broken footage using the following pipeline: gst-launch-1.0 v4l2src ! filesink location=encode.mjpeg Somehow gstreamer can still play it back: gst-launch-1.0 filesrc location=encode.mjpeg ...
5
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1answer
3k views

How do I replace the audio in an MP4 file without re-encoding?

I've got a video in an MP4 container that I would like to replace the audio track in (not add another audio stream to, nor convert the audio format of). Someone elsewhere online suggested to use ...
2
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0answers
433 views

Converting series of images with ffmpeg results in black video

I've just downloaded ffmpeg since it seems to perfectly match my needs (make a video from a set of pictures). I'm currently playing around with some examples just to get started and there's something ...
1
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1answer
6k views

What are “levels” and “keyframe distance” when rendering video in Adobe Premiere Levels?

I would like to know what the render option called Levels is. Why should I change that to 5.1 or 1.0? What are those levels and how do they affect the final file (size, quality)? All the info I read ...
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2answers
12k views

How can I get high quality/low size MP4s like the LOL release group?

Release group LOL does an excellent job at encoding their releases on The Vampire Diaries (on other shows like How I Met Your Mother the bitrate is higher, so doesn't seem this effective). About 200 ...
5
votes
2answers
11k 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 ...
1
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1answer
447 views

FFMPEG keeps converting without stopping

I have a web application that converts videos and splits them using FFMPEG. It was working fine until recently I noticed that the videos were taking much more time converting than they are supposed ...
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0answers
69 views

FFmpeg audio disappears in the middle of the video

I've been trying to convert a sequence of PNG files to a video with some sound (mp3 or wav). It pretty much works with different codecs and quality settings for both video and audio.But the audio ...
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1answer
5k views

Using CRF and setting a maximum bitrate with x264 in FFmpeg

I am trying to transcode a video to H.264/MP4. I am using the crf = 20 option but according to the requirements I also want to limit the maximum bitrate to 3 MBit/s. I was trying to cheat though it ...
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1answer
104 views

Simply changing avi file to mpg accelerates the video while audio maintains the original pace

I have a avi file with streams as follows Stream 0: Video, MPEG2 video, 480x576, 25fps Stream 1: Audio, MP2, 44100Hz, 192kbps I am trying to convert the above file into SVCD complaint mpg file. So, ...
3
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1answer
4k views

How do I translate HandbrakeCLI options to FFmpeg options?

I have a bunch of commandline settings that work for handbrake, but sometimes on some videos (I have no idea why) handbrake throws "Out of memory exception". I was wondering if I can find the same ...
2
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1answer
1k views

ffmpeg support for tx3g

I am trying to embed subtitles in an MP4 contrainer using ffmpeg. I am using the following command: ffmpeg -i input.MOV -i input.srt -map 0 -map 1 -c copy -c:s mov_text output.MOV I would like the ...
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2answers
1k views

v4l2 issues with webcam encoded to H.264

I am trying to send a H.264 webcam video feed over wifi to another computer using gstreamer. I am using this tutorial as a guide. I am using a Creative Live! Cam Connect HD as my webcam. The website ...
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2answers
1k views

720p to micro 720p

What is Micro-720p ripping method? I want to rip from 720p using ffmpeg and libx264. Example m720p video information (I don't know the source video): General Complete name ...