Also known as MPEG-4/AVC, an advanced video encoding standard, widely used in Blu-ray and streaming video.

learn more… | top users | synonyms (1)

0
votes
0answers
14 views

Which audio codec is preferable to use for mp4 video?

I use standart codec for encoding and i don't like the quality of audio even if there is larger audio bitrate. ffmpeg -y -i input.avi -i watermark.png -filter_complex ...
0
votes
0answers
24 views

Sony Vegas: Will re-rendering a video with identical video encoding reduce quality?

I have edited and exported a video in Sony Vegas Pro 13 using the preset 1920x1080-30p video template (mp4, AVC, 16 Mbps). However, I need to reedit the audio of the video, and would like to know if ...
0
votes
1answer
33 views

avconv: Converting from .ts to H264, with high quality screenshots

I am using avconv to convert MPEG Transport Streams to H264. My main goal is to capture high-quality screenshots from the source video files. The TS files are interlaced, so I am first converting to ...
0
votes
0answers
57 views

Ffmpeg same command, different results local vs server. Video shakes, invalid dropping

I am trying to concat some files without reencode so I use ffmpeg -f concat -i list.txt -c copy out.mp4 On local it works perfect but on a dedicated server video shakes! Is like video is frozen ...
0
votes
0answers
48 views

Issues with audio when converting video with ffmpeg

It's an uncommon issue, it occurs when an input video file is low quality, exactly input audio stream. I use aac native with 64k bitrate in conversion command. Do i need to use other audio codec or ...
1
vote
0answers
25 views

Getting same quality with “baseline profile”?

I have a couple of videos taken in H.264 using the high profile and I want to convert them into a baseline profile while keeping the same quality and size so, that they can be easily played on an ...
1
vote
1answer
243 views

H.264 decoding error log from RTSP stream

I am getting the following H264 error log. This log comes while decoding an RTSP video stream with help of FFMPEG. The picture displayed is blurred after 5/6 seconds. The picture would recover it from ...
0
votes
1answer
41 views

Efficient re-encoding of MPEG-2 cartoon animation

I have some cartoon animation stored in MPEG-2 video that I would like to convert to MPEG-4/h264. The MPEG-2 video compression is rather bad, with both "small" JPEG artefacts around details in the ...
-1
votes
2answers
65 views

What kind of image compression causes this color banding? [closed]

I have two images. The first is before undergoing lossy compression: Picture #1: The second is after undergoing lossy compression: Can anyone explain to me what is going on here? How does this ...
-1
votes
1answer
121 views

Analyzing h264 100GB video stream

I have a big file, an h264 stream video of a CCTV. I analyze this file with ffprobe and the result is this: [h264 @ 0000000002d24480] no frame! [h264 @ 0000000002d24480] non-existing PPS 0 referenced ...
1
vote
2answers
147 views

Convert all files in directory using FFMPEG

I'm trying to write a script to convert all the files in a directory to m4v, whilst trying to keep similar (if not the same) quality and compress the file to reduce the overall size. I've pieced ...
1
vote
1answer
86 views

How can I configure ffmpeg to encode h.264 video with a specific log2_max_frame_num_minus4 value?

I am working on a project where we are splicing HLS video segments. The HLS standard conveniently includes an #EXT-X-DISCONTINUITY directive to signal that the player should be ready for video that ...
0
votes
0answers
154 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
votes
0answers
123 views

Editing metadata of H.264 MP4 videos

Windows lets me edit some metadata fields of H.264 encoded videos, such as “Title” and “Comments.” Such data seem to be preserved inside the file itself, which is what I want. Some applications make ...
0
votes
1answer
265 views

Skipping a frame without re-encoding H.264 video

I have an mp4/h.264 video which only contains I-Frames. I want to skip one of those I-frame without re-encoding the entire video. I tried this: ffmpeg -i "file.mp4" -vf select='not(eq(n\,10))' ...
1
vote
0answers
55 views

MPEG DASH with H264 + H265

I've tried to build an MPEG-DASH stream coding some bitrates in H264 and some others in H265. In a nutshell I'm trying to code the same video with ffmpeg for the lower bitrates in H264 and the highest ...
0
votes
0answers
207 views

Using H.264 pixel format on Logitech C920 on Linux

This article states that it is possible to stream H.264 directly from webcams after kernel 3.2. I have the same camera (Logitech C920) and kernel 3.16 (of Debian testing), but the pixel format does ...
0
votes
0answers
112 views

ffmpeg synchonization of libfdk_aac (or libfacc) and libx264

How to synchronize libfdk_aac and libx264 streams? ffmpeg -i pipe_libfdk_aac.fifo -i pipe_libx264.fifo -c copy -f flv flv_stream_pipe_or_rtmp.output I'm always receiving the same asych in all ...
0
votes
0answers
399 views

OpenH264 won't work properly on Waterfox, what am I missing?

All the boxes on https://www.youtube.com/html5 appear to be ticked and yet mp4 youtube videos fail to load. The changes I have made so far to about:config I shall list here: ...
1
vote
1answer
325 views

Firefox: H.264 Video Support

I have Firefox 34 and OpenH264 Video Codec provided by Cisco Systems v1.1 addon installed and enabled. The problem is that Firefox can not play H.264 video. I used this page for testing and here is ...
0
votes
0answers
203 views

ffmpeg error when encoding h264 mp4 video

I'm trying to do a simple encoding of an mp4 in h264 to mp4 but I keep getting the error: Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width ...
4
votes
0answers
1k views

FFMPEG encoding settings for 1080/60fps/h264 - framedrops

I want to use latest ffmpeg to encode set of JPG frames to 1920x1080 60fps h.264 movie. I'm looking for set of parameters that will allow smooth playback of encoded video on fairly strong PC machines ...
0
votes
0answers
234 views

How to multicast live H264 without transcoding?

I have a live H264 stream (hardware encoded from the webcam) and I'd like to stream it over the network using multicast on a Linux platform. Because the platform has limited CPU power, and the data ...
1
vote
1answer
3k views

What H.264/H.265 video compression parameters provide DVD-equivalent quality with better compression?

I have got a box of DVD video disks that I seek to get rid of while I'd like to keep the videos by converting them into MP4 files to store them on a hard drive. Considering superiority of the modern ...
1
vote
1answer
307 views

ffmpeg-transcoded H.264 video does not play in Chrome

I am trying to transcode videos using ffmpeg. Following is the sample command. ffmpeg.exe -i 534.mp4 -vcodec libx264 -level 3.1 -b:v 396k -ar 48000 -ab 32k -s 100x100 -force_key_frames ...
0
votes
0answers
123 views

XP Can't display H.264 video

A friend's win2000 box died so I gave him an old XP box of mine. I updated XP and installed the final rollup. All good. I installed the software he owned and all works well. Finally ran IE-6 (I ...
0
votes
0answers
162 views

H264 in Firefox on Windows 7 N without Media Feature Pack?

How can I play H264 videos and MP3 audio in Firefox on Windows 7 N Professional without installing Windows Media Feature Pack? I know you can use GStreamer on Linux, but it doesn't work on Windows. ...
0
votes
0answers
714 views

Video Converter to H.264 with Nvidia Card using GPU acceleration (WMV to MP4)

I'm currently using an Nvidia 660 GTX trying to convert WMV files to .MP4 (h.264) using 2 pieces of software Xilisoft Video Converter Ultimate (latest version) Aimersoft Video Converter Ultimate ...
0
votes
1answer
381 views

Shadowplay vs. NVenc?

I would like to understand the difference bitween NVidia Shadowplay and NVenc. Both allow you to encode videos in h.264 on the fly, but I understood that the first one use a h.264 dedicated chip ...
1
vote
0answers
487 views

FFmpeg/avidemux: fix packed B-frames

I'm transcoding some of my old mpeg4 videos (in avi containers) to h.264 with FFmpeg. Basically ffmpeg -i input.avi -c:v libx264 [x264 settings] -c:a libfdk_aac [aac settings] output.mp4 When doing ...
0
votes
1answer
69 views

Concatenate h264 bytestream using cat?

I need to merge few h264 files. Can I do simply trick like this: cat file0.h264 file1.h264 file2.h264 > out.h264 All h264 has the same encoding settings, except resolution and bitrate, and has ...
0
votes
1answer
116 views

Capture and encode HDMI signal on FreeBSD

I am looking for a capture PCI-e card to encode HDMI source and stream on network. I want to "share" my HDMI sources to my Raspberry sinks in the LAN. I have found many PCI-e cards, but most of them ...
2
votes
1answer
626 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 ...
1
vote
0answers
701 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 ...
4
votes
1answer
3k views

Convert AVI into H.264 that works inside an HTML5 Video tag

I would like to convert an existing black and white AVI into an H.264 video that works inside an HTML5 video tag. I'm currently using this ffmpeg command: ffmpeg -i file.avi -y -c:v libx264 ...
0
votes
1answer
408 views

Speed up video with FFmpeg with low I-frame distance

I got a video with 60 fps and h264 encoded (.mp4), audio layer is removed. Now I want to speed up the video 4x faster with FFmpeg, but I would like to have a very low I-frame distance to be able to ...
1
vote
0answers
98 views

H.264 Pro Recorder Files not closed properly

I have several files that were recorded using a BlackMagic Design H.264 Pro Recorder. It would appear that somewhere in the process, the recorder did not close out the file properly when the ...
0
votes
1answer
271 views

Running qtfaststart in a folder containing multiple .mp4's

I have a library of videos, all of which need to be adjusted for web-streaming by putting the moov atom ahead of the rest of the video with qtfaststart. This allows playback to begin before the client ...
-1
votes
1answer
249 views

Record webcam automated with unknown duration

I need to record (not stream) from my webcam, convert it to H.264 and store it in a mp4-container. With VLC media player I can do this manually with the Open Capture Device menu where I just have to ...
0
votes
0answers
404 views

How can I repair a damaged H.264 video stream from a security camera?

I have a security camera file in H.264 format. It cannot be converted due to error messages stating the file is damaged. Is there any way to repair this single 12 MB file so it can be converted to a ...
0
votes
1answer
522 views

How to check is h264 mp4 file is correct?

I writing applcation which split live stream from web camera to multiple h264 mp4 files. Now I have some problems like missing keyframes and maybe another. Are there any tools to check my output ...
2
votes
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: ...
4
votes
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 ...
3
votes
1answer
1k views

How do I make h.264 work on YouTube on Firefox on Windows 7 64 bit?

Various news articles state that Firefox supports h.264 on Windows since version 20. As of this writing the version is 24, yet Firefox still can't play most YouTube videos. I did the HTML5 opt-in and ...
3
votes
1answer
2k views

Will 128MB video card be enough for Windows 7 Aero with two 720p monitors connected? [closed]

I'm going to buy a replacement AGP video card for parents' decade old Athlon XP 3200+ computer. It has Radeon 9000 with 64MB now. This videocard is crippled under Windows 7 (no WDDM driver) and it ...
3
votes
1answer
1k views

Why doesn't this video play on iOS?

I'm having trouble getting my mp4 video to play on any iOS device. I'm testing on an iPhone with iOS 6 and an iPad running iOS 7. When I upload the video to my server and enter the URL directly on the ...
0
votes
1answer
405 views

Is this possible to do H264 CCTV DVR + FreeNAS + FTP?

Can I use the storage inside H264 CCTV DVR as my NAS (network-attached storage) and use Filezilla to access the files remotely?
0
votes
1answer
2k views

ffmpeg stops streaming after 900 seconds from Axis Camera to FLV RTMP

Audio and video works for 900 seconds and then, ffmpeg stops with: video:1889kB audio:1825kB global headers:0kB muxing overhead 2.162866% I stream from an AXIS IP camera through ffmpeg over nginx. ...
-1
votes
0answers
269 views

video encoder with GPU acc on OS X [closed]

I googled, it seems opencl/cuda is not available in ffmpeg and handbrake. So, is there one tool can convert a video to h.264 or vp8 by GPU acc on OS X(linux can be accepted also)? Thanks.
1
vote
1answer
503 views

Cut an H264 video on non-key frames

I would like to extract a scene of a video (audio codec: AAC, video codec: H264). The problem is that the scene doesn't begin on a I key-frame. The software, I have tried (Avidemux, Handbrake or VLC) ...