The process of converting a media file from one format to another or changing the compression settings used.

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8
votes
3answers
3k views

OGV Format plays properly on my computer but transcoding drops (duplicate?) frames

I've made a set of screencasts using recordmydesktop on ubuntu 12.10. The output is an ogv file. When I watch the ogv file using the default movie player (totem) it looks fine - the audio and video ...
6
votes
1answer
945 views

How to get closed captions to appear on a live stream

I want to be able to stream live TV but also include the closed captions. My workflow is to use a Blackmagic Designs Decklink card (video source is SDI) and use VLC to capture and transcode the video,...
5
votes
2answers
401 views

Does mjpeg handle interlaced video correctly?

I'm using mencoder/libav to capture an interlaced source to mjpeg. Now, my hunch is that mjpeg is a codec that handles only full-frames, progressive video - because I assume it compresses single (...
4
votes
1answer
1k views

Video converted by FFMPEG has a different duration, why?

I convert videos using FFMPEG. My goal is to convert them to the MP4 container format (MPEG-4 Part 14) with AAC-encoded audio stream and MPEG-4 part 10-encoded video stream. I use the following line ...
4
votes
2answers
378 views

Web Videos via Watch Folders Transcode

What I am looking to do is fairly simple, however seems complicated in theory. What I need to do is be able to have a folder where all video files placed in the folder, are transcoded to all ...
4
votes
1answer
41 views

Converting WMV to MP4

I just joined this community and hope my question is acceptable since it is quite "noob" like. I have a .wmv video file that is 1280x720 and causes windows media player to abort after excessive ...
4
votes
1answer
8k views

How to force ffmpeg to insert keyframe at first frame when downsampling a framerate of a video with x264 vcodec

I have a mpeg4 video at 25fps. This video contains just one static frame. I'm trying to downsample the frame rate to 1fps and convert the video to x246 (mp4). I ran the following ffmpeg command: ...
4
votes
2answers
728 views

Convert .WMV using FFmpeg

I'd like to use FFmpeg on the Mac Terminal command line to convert a .WMV file. I'm familiar with the syntax: ffmpeg -i /path/OriginalMovieFile.wmv /path/NewMovieFile.??? However, my recent attempt ...
4
votes
2answers
3k views

Combine video and audio TS segments coming from HLS stream

Apple HLS streams MPEG-2 TS files containing video and audio data in packetized elementary stream format. These segments (.ts files) can be joined in order to build final video. Recent version of HLS ...
3
votes
3answers
13k views

How do I specify baseline H264 profile using FFmbc?

I am using FFmbc (a FFmpeg derivative) to transcode some video files to H264 (in a mov wrapper). I want to specify baseline profile (to reduce CPU usage) but can't figure out how. There doesn't seem ...
3
votes
2answers
2k views

FFMpeg Encoding and Core Usage

We have developed an application to transcode source .mov files into .ogg, .mp4 and .webm output. It is currently running on AWS EC2 instance g2.8xlarge. It is working (yay!). My question: Even ...
3
votes
1answer
4k views

What CRF or settings I should choose for h265 in order to achieve a similiar quality of h264?

I'm doing some experiments with HEVC x265. I have a raw footage and the quality of details of h264 with same CRF setting looks better than h265. Shouldn't be the opposite? Maybe my setup isn't the ...
3
votes
1answer
115 views

FFMPEG standard transcoding settings

I am working on a project that provides video streaming to the users over the internet on web-browsers as well as mobile devices. I am using following sample FFMPEG command to transcode the video: ...
3
votes
1answer
552 views

what graphics card features effect NVIDIA NVENC hardware encoding speed?

I have a web project I am working on that requires transcoding of multiple short video clips (6-10 seconds) uploaded by users into a web friendly H.264 format on my linux server. I have been able to ...
3
votes
1answer
124 views

How do I prevent Quality loss in the beginning of a video?

My company transcodes videos sent in by users (recorder by our own screenrecording software) I use FFMpeg to do the work using this command: /ffmpeg/ffmpeg -i in.mov -vcodec libx264 -fpre /ffmpeg/...
3
votes
1answer
876 views

Troubleshooting XDCAM import into Premirere Pro CC 2014

I am in the middle of editing a TV spot we create bi-weekly and therefore on a tight timeline. I am using Premiere Pro CC (2014) just upadted last week on Win8.1, 4790k, 16GB, OS SSD 256GB, Project ...
3
votes
0answers
69 views

Netflix encoding system - MAPLE

I understand that Netflix does all their encoding in AWS using EC2. They have a custom encoding software called MAPLE that chunks all source video into 2-3 second chunks and encodes in multiple codec ...
3
votes
0answers
69 views

GStreamer mpegtsmux produces empty output file

I'm trying to construct a GStreamer pipeline to transcode MPEG2 video and MPEG1 audio in a MPEGTS container to H.264 and AAC and output to a filesink. The problem is: the output file is empty. If I ...
2
votes
3answers
233 views

Video Encoding - Wasting Space

I am facing a common issue that I cannot find a term to describe: I have a few low quality VHS rips that were encoded with a certain Apple ProRes codec (irrelevant in the context of this particular ...
2
votes
3answers
67 views

Is there a video container which is able to handle segments of different video quality (or even size)?

Let's assume I have a video of 10 minutes length. And I want to reduce its size by having some parts in high bitrate, while other less important parts can be low bitrate. For this I'd cut the original ...
2
votes
2answers
166 views

How is possible for YouTube and Vimeo transcode so fast?

For the bit I read YouTube and Vimeo rely on servers powered by some modified libs i guess like libavcodec and tools like ffmpeg in a serious custom build. Let's assume a transcode to h264 but the ...
2
votes
4answers
2k views

What is the most lossless way to rip a laserdisc to a Mac?

I want to rip a LD to my Mac as a digital video file. I will create a DVD from this file eventually, but I'm primarily interested in playing it on my laptop. What video output from the Laserdisc ...
2
votes
1answer
347 views

ffmpeg stream options for mp3, cover art of mp4

I have potentially millions of HLS streaming videos to create from cover art and mp3s. Obviously, I'd like to keep the resulting bandwidth to a minimum. I tried various ffmpeg flags specifically ...
2
votes
2answers
99 views

How to convert 25p to ntsc dvd?

I need to build a ntsc dvd from a 25p movie. I've read about different solutions: Using twixtor to get ntsc framerate Using DGPulldown to flag it up to 29.97fps What is the most professional way ...
2
votes
1answer
2k views

Improving frame/image quality on Handbrake?

I created a .cdr file from a DVD and converted it to an .mp4 with Handbrake. My only issue is Handbrake's default settings create a somewhat grainy picture. The file size went from 1.24Gb to ~100Mb so ...
2
votes
1answer
93 views

What's the right setup for recording programming talks?

I go to lots of monthly developer meetings, and there are many requests that the talks be recorded. I have no idea what kind of camera or setup is right for this. Recordings are always indoors, ...
2
votes
1answer
103 views

Transcoding AVCHD To Something That Isn't Choppy In Adobe Premiere Pro CS6

I'm recording with a Sony camera that records with the AVCHD codec. Unfortunately, as others have also observed, this format is choppy when trying to edit in Adobe Premiere Pro CS6. What is the best ...
2
votes
1answer
331 views

using -force_key_frames in ffmpeg with libx265

I'm trying encode a video stream using HEVC with ffmpeg and create a MPEG-TS file. I need to be able to insert IDR frames to certain locations in the stream. I came across the flag -force_key_frames ...
2
votes
1answer
102 views

Is it possible to raise H.264's QP without fully re-encoding the video?

Is it possible to lower the H.264 video quality and bitrate without fully decoding and encoding it? Are there H.264-specific algoritmhs that can create a video with higher QP based on encoded video ...
2
votes
1answer
3k views

Can I get Handbrake to apply additional filters such as brightness/contrast?

I have some scripts which pass video into Handbrake to transcode it for the web. What's the easiest way to apply additional filters for things like brightness/contrast? (ie. things not covered by the ...
2
votes
1answer
65 views

What is a good lossy format for storing DV

I have 60Gb of DV footage that I need to store, but 60Gb is WAY too big. I need to transcode it to a lossy format, but I need the resulting video to be robust such that it can be easily edited with a ...
2
votes
0answers
735 views

Fast encoding with ffmpeg

I know about presets but faster presets lose the video quality. Are there any hardware requirements I need to consider? Or are there any settings that I need to tweak? And lastly where do I place the -...
2
votes
1answer
233 views

ffmpeg encoded videos are not playing on mobile browser

I have set up a server to upload and play videos. I used django/python as the scripting language, and nginx and gunicorn as the webserver. I am using videojs as the video player. For h264 mp4 I tried ...
1
vote
2answers
85 views

cross platform software to convert video to image sequence

I'm looking for a piece of software I'm even sure it exists. Here's what I would like this software to do: be free (ideally open source, but free and closed source is also fine) be cross platform (...
1
vote
1answer
3k views

Encoding DNxHD using ffmbc

I have decided to re-encode my footage as DNxHD for editing. I am using ffmbc (downloaded here) to do the encoding. My source footage is HDV 1080i50. Therefore I think the best format to trancode ...
1
vote
1answer
2k views

Compress or convert .mov to lighter format

My camera records videos in .mov format, what can I use to edit out the audio and lower it's size in a Windows environment?
1
vote
3answers
38 views

What codec should I edit in on Premiere Pro?

I have a MacBook Air (13-inch, Early 2014) with base configuration. I have a bunch of footage off a Canon 700D which is in a H.264 codec. Now obviously, a MacBook Air does not have an external ...
1
vote
2answers
804 views

Ripped DVD Video Playback Stutters, original DVD does not

I have a DVD of home video made from a VHS that I'm trying to rip so I can post it to YouTube. I've ripped a couple of videos using both Mac DVDRipper Pro and Handbrake to compare the output after I ...
1
vote
1answer
158 views

Converting container or transcode movies to iPhone from command line (os x)

Over the years I collected many movies in different container formats (avi, mp4, mkv) and encoded with different codecs too. Now want convert containers (or transcode them if absolutely necessary) to ...
1
vote
1answer
1k views

Converting MTS for best use in After Effects?

I have a client who gave me nothing but MTS files to use in After Effects. Basically it's HD slow motion photography, shot sideways, against a greenscreen, and all he wants to do is put one 1920 x ...
1
vote
1answer
2k views

Convert Uncompressed AVI to JPEG2000 in MXF

I'm looking to convert raw, uncompressed video (currently in avi container) into lossless motion jpeg2000 encoded video in an mxf container. I've tried FFMPEG, but don't think it can do this. What's ...
1
vote
0answers
125 views

Streaming WebM on unsupported platforms (Safari, IE, etc)

I'd like to stream WebM videos to browsers that don't support it (like Safari/IE). I have no problem in converting the video to a supportable format (like MP4), but the encoding should be on-demand, ...
1
vote
0answers
58 views

Can't change Handbrake audio bit rate

I'm trying to compress video files using handbrake. While I'm managing to bring the video bit rate down, the audio bit rate is always at around 380kbps, no matter what I set in the audio settings tab....
0
votes
2answers
40 views

How can I efficiently convert MOV / MPEG-4 files for long term storage?

I have a Canon 6D DSLR that I am shooting video on. The camera is set to capture 1280x720 60fps IPB MOV / MPEG-4 files. The video files are in the range of 250MB per minute of recording. I have ...
0
votes
2answers
331 views

Transcoding during ffmpeg overlay

My question is related to the technicality behind video overlaying. When a 3D object or an image is added to a video sequence as an overlay to render, does ffmpeg fully decode the original sequence to ...
0
votes
1answer
38 views

How to create MPEG-DASH variants at resolutions where one dimension is not a whole number in pixels?

I've created a bunch of variants and a DASH manifest for Sintel, which more or less works, but does not pass validation. The issue is when I want to scale a video to a specific width, but the height ...
0
votes
0answers
22 views

Wowza Webm Transcoding not working

Is there anybody does Webm transcoding with Wowza Streaming Engine? I used Wowza 4.5 to transcode a RTSP stream to a Webm stream but it doesn't work. I setup my server followed this article: https:...
0
votes
1answer
107 views

how to get vdpau hardware acceleration using ffmpeg?

I am developing a multimedia player using ffmpeg. I am trying hard to get hardware acceleration through ffmpeg using vdpau hardware accelerator. I didn't get any success so far. Below I have mentioned ...
0
votes
1answer
50 views

Transcoding vertical video to an intermediate codec

I used the Android SDK to record some steps for a tutorial video and am having some difficulty working with the footage. First of all, it's of a variable framerate and secondly it's in 1080:1920 - ...
0
votes
0answers
110 views

ffmpeg based JAVE video conversion taking a long time

I am using ffmpeg to convert videos to mp4 format in my application I have used JAVE and Xuggler for the same. My issue is that, video conversions are taking way too much of time. For example, a 50MB ...