Questions tagged [h.264]
The h.264 tag has no usage guidance.
175
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H.264 Max Resolution
I was trying to find the technical reasons for why H.264 is limited for 4K.
Obviously that in terms of bit-rate it becomes less efficient but the encoding itself is limited and for some reason, I ...
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does h.264 have separate audio and video
We are requesting video producers to send us video and we've worded our request as below. Please tell me if our request makes sense?
"One 720 p editable file in h.264 in an mp4 or AVI container with ...
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H.264 or VP9 for encoding for YouTube?
I make short films which I distribute through YouTube. I know YouTube uses VP9 for streaming, but YouTube still recommends uploading with h.264. It makes more sense to me to upload in as similar a ...
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Colors look different after export
Colors look great in FCPX.
After I export (Share > Master file > H.264 Quicktime) they look a bit dull: desaturated, less vibrant. Also sort of like the wrong gamma curve - shadows are darker.
I ...
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If I shoot in H.264 is it worth it to export the product in ProRes?
I shoot video in H.264. I assume that my footage is forever compressed really small and that exporting to ProRes in FCPX would do nothing but make my file bigger. Is this true? Or am I missing ...
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Losing audio in re-encoding with ffmpeg
I have some DVDs I want to save MP4s from. The video files are VOB files. I can play them if I change the extension to .mp4, but I can't use the seek bar in Windows Media Player. Also, the files are ...
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Video in Sony Vegas flickers and is full of black frames
I'm trying to import some clips into a Vegas 13 project, but they "flicker": some frames are all black (even in the preview), even though the files play perfectly in mplayer and VLC.
The clips are ...
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Copying h.264 video from TS into MP4 changes frame rate and time
I have large MPEG-TS file that I am converting to MP4 using the below command. If I seek to the same time in the video in both the MP4 and the TS file, the MP4 will be a few frames behind the TS ...
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Why reencode MP4 to MOV for "easy post processing"?
On this page author reencodes MP4 from GoPro to MOV for "easy post processing". Why the processing becomes easier after that? The author also uses -sameq flag which is gone from ffmpeg without the ...
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Is H.264 subject to exploits / are some H.264 codecs subject to exploits?
How safe are H.264 streams from exploits? More exactly, are the consumer-grade H.264 codes generally "safe"?
I am currently gratuitously transcoding A/V files to avoid being exposed to possible ...
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How to specify CRF quality settings for different encoding software
Is there a way of specifying a quality setting for h.264 that is not software dependant?
I'm trying to help a colleague create a specification for outside contractors when they deliver video to us ...
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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 ...
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Can I use h.264 codec inside .mp4 container for my website
I would like to use h.264 as the codec inside .mp4 container for my user uploaded videos for my website. But I saw somewhere that h.264 is non free. I am unsure whether I can use this technology or ...
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MP4 / h.264 patent issues?
I know this is not a legal forum but I'm assuming this is a daily issue for most people on this site since h.264 video (AVC / MPEG4 part10) is so ubiquitous (and there is a legal tag here).
I've read ...
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Color shift after exporting!
I've a bunch of videos from different sources that i need to export, i'm mainly using Sorenson Squeeze 9 for videos that i just want to transcode to another format or change bitrates, and Premiere Pro ...
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encoding 4:2:2 in 10-bit with libx264
I believe that libx264 is now capable of doing 10-bit 4:2:2 encodings, but I can't seem to get it to work. I'm using ffmpeg (info below), and I've also tried the x264 encoder directly. I've tried
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Adobe Premiere saves m4v instead of mp4
I have problems with my Premiere Pro. It is first time this has happened, and I cannot understand why.
I am creating a timelapse from my images. When I want to export media, I choose format H.264 (...
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Repeat/loop Input Video with ffmpeg?
I just want to loop a mp4 video with ffmpeg and keep the current settings and codec.
For example if input.mp4 is 0:10 long, and I would want to loop it 4 times so output.mp4 is 0:40 long, how could I ...
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Switching between H.264 video streams on the fly?
I have several H.264 encoded MP4 files, as well as still images. From these I want to generate a single video stream that I can broadcast. The stream will be composed of alternating still images and ...
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Can H264 achieve "equivalence" with ProRes 422?
Has anyone done or seen any tests comparing Apple ProRes 422 with high-bitrate H.264?
We use 422 as a delivery format to go to DCP for theatrical versions of trailers.
The bitrate is around 150mbps.
...
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Converting video with different resolutions slightly affects in file size, why?
I'm converting a video with resolution 960x720p using HandBrake on Mac. When I convert two videos with exactly the same settings but with different resolutions, the file size is almost the same. ...
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How can I convert .MTS file (AVCHD) to .mp4 by ffmpeg without re-encoding H264 video stream?
Note: I posted same question to stackoverflow a short time before, when I have not found this comunity yet. I repost this since the question is more suitable to this community.
1. What I tried
I ...
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Blocky video artifact problem on Canon 600D
When shooting video with my Canon 600D I get artefacts like the following in the pictures: (not throughout the whole video but only for a second and then its gone again, but comes back after a few ...
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Playing back 1080p and 720p videos (same bitrate) on a 720p display
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 ...
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h264 settings for large flat areas of slowly changing colour
I'm doing an animation for a projection mapping that simulates the sun casting shadows on a structure as it moves through the sky. Basically it's just big flat areas of colour that change over about ...
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