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Questions tagged [bitrate]

The tag has no usage guidance.

1
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2answers
114 views

How to concatenate 2 MP4 videos to output of certain bitrate?

I've already read the other articles about concatenating but couldn't find any that discuss specifying the output bitrate. I have 2 MP4 videos. What I want to do is speed up the first video to 110% ...
0
votes
1answer
51 views

“The sample rate of the two audio tracks is different”

I'm trying to merge a few video files through mkvmerge but I get the following error after running mkvmerge -o '/home/videos/marged/new.mp4' '/home/videos/intro.mp4' \+ 'old.mp4' \+ '/home/videos/...
0
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1answer
24 views

Does bitrate also mean the internet speed I need to have?

I am streaming raw video at -r 30 and the bitrate is as follows frame= 228 fps=6.3 q=-1.0 Lsize= 410406kB time=00:00:31.03 bitrate=108341.2kbits/s Does that mean that I need 100Mb/s internet to ...
0
votes
1answer
17 views

Which bitrate is needed for dvd quality?

As far as I know, cd quality for mp3s is at least 128 kbps. What should the video bitrate be to obtain dvd quality? Note I'm using mp4 container with mp3 audio and mpeg4 video.
0
votes
0answers
19 views

Reverse engineer the CRF value used during transcoding by ffmpeg [duplicate]

I'm trying to learn about the transcoding settings used by Instagram for their videos for their progressive mp4 files. As an experiment, I uploaded 5 videos of varying bitrates(22Mbps to 2Mbps), using ...
4
votes
1answer
2k views

It is better to have more B-frames or more P-frame for video streaming?

I'm trying to re-encode (H.264) some videos from my movie library in order to put them on a NAS and stream them to a smartTV through WiFi. In order to do so, I'm using HandBrake on MacOS and – among ...
3
votes
2answers
36 views

If the environment being captured on a video stream becomes less complicated, does the bit rate and latency decrease?

For example, a live GoPro video is being streamed to a HDMI capture software on Windows. The live stream of an office with the lights on has a bitrate of X and a latency of Y ms. If the lights in the ...
1
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0answers
235 views

HLS Preset Settings 240p, 360p, 480p, 720p and 1080p

I am trying to transcode mp4 videos into HLS using AWS transcoder. I see that there are only few presets available which are like 1M, 1.5M and the highest 2M. I am unable to get 240, 360 , 480,720p ...
1
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2answers
703 views

ffmpeg live streaming to Periscope: bitrate appears too high

I just noticed Periscope Producer capability to accept live streaming from external sources. A quick test with ffmpeg fails to fit bitrate requirements of 160kbps max for audio. Periscope says my ...
1
vote
1answer
34 views

Does increasing the framerate while not changing the content affects compression quality?

This question has no practical importance for a regular video production pipeline, but nonetheless it's something I find fascinating because it would imply video codecs use temporal sub-sampling ...
1
vote
1answer
323 views

FFMPEG to convert img seq to DNxHD - BANDING

I am using FFMPEG in a VFX workflow to convert .png sequences to Avid friendly DNxHD. Today I ran into a situation where a video file I created had quite a bit of banding in Avid when it should not ...
1
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0answers
74 views

Converting an AAC Mono file to AAC Stereo, higher audio bitrate?

I hope someone can help with this issue. A client is sending me videos recorded with iPhone; with dual-channel MONO AAC-LC audio, an average of 89 kbps. It's mono but dual-channel. I'm editing with ...
2
votes
1answer
1k views

Is there any ffmpeg command for knowing max bit rate of a video?

I have an MP4 file input.mp4 which is encoded in libx264. By ffprobe command: ffprobe -v error -show_streams input.mp4 I can know the bit rate of input.mp4, but it does not give the information of ...
1
vote
1answer
25 views

Suggestions/Ideas for a “Show Me” project for school about Audio or Video Encoding?

Basically, I need to make a quick "Show Me Something Cool" project for my physics class. It could be about anything sciency, that is cool, and that you can explain & demonstrate in class in like 5 ...
1
vote
1answer
420 views

FFmpeg, encode video for 720p @ 4mbps playback

I've been fighting with this dilemma for about a week or two now and I've tried my best to understand it from whatever I can find through google. What I need (or at least I think I need) to do is ...
0
votes
1answer
168 views

How do I insert the program requested bitrate from YouTube Recommended Uploading Encoding Settings?

I'm about to do some screen recording with OBS (Open Broadcaster Software) and I've just been checking the YouTube Recommended Upload Encoding Settings to get the best quality without overkilling the ...
5
votes
3answers
411 views

Is there a way to improve quality for videos with snow/confetti/LCD in background?

The effect I'm referring to: Essentially, the snow/confetti in the shot means lots of motion, hence a lot of the available bitrate is taken up by it, thereby ...
0
votes
1answer
36 views

Where can one find a current and definitive reference for video quality as it pertains to hosting HTML5 Videos?

At my job, I have encoded our sites videos for a couple years by using X-Media Re-encode: MP4 1024x576 VBR 1500kbps WebM 1024x576 CBR 1200kbps I never had complaints about quality or buffering, I ...
0
votes
1answer
335 views

Adobe Premiere Bit Rate (Vimeo)

I just published a video on Vimeo and got this message: "This video’s bit rate is only 5568 kbit/s, which is lower than what we recommend for H.264 video. Your video might not look as nice as it ...
2
votes
1answer
345 views

Bit rate reduction when converting 60fps footage into 30fps?

I'm shooting at 60fps, the result is video playing back normal speed but displaying 60fps. I then have stretched the clip so that i get 30fps playback speed with a slow motion clip twice as long as ...
0
votes
1answer
66 views

Is there a mathematical equation to compute the bitrate of a Cisco H.264 stream?

I'm working on adaptive streaming for video. As I'm using a Cisco Open H.264 Encoder, I'm testing multiple configurations for the encoder. A configuration consists in a several of parameters (bps, fps,...
-1
votes
1answer
213 views

Please explain video bit rate further

I don't understand this video on "What is bit rate" . I want it explained more. First I need you to define bit rate. And how compressing comes along it? What's that '...
0
votes
1answer
109 views

Exporting a video from Premiere spits out incorrect quality

I'm trying to export a video from Premiere(CC) with the following settings: I recorded this video in Motion-JPEG 1080p/60Fps out of Bandicam. I've recorded videos in Bandicam (same settings as ...
1
vote
1answer
812 views

how to measure bitrate of video over time

Given an encoded video file with non-constant bitrate, how would one analyze the bitrate over time? So far I found one old program that produces a bitrate plot, but none that can give the raw data of ...
2
votes
1answer
49 views

Is there a way to get the bitrate of a specific region of a video?

I have some videos I recorded with my cell phone that I want to crop using Avisynth's crop(). I am using x264vfw with VirtualDub which asks for a target bitrate. I usually just get the bitrate from ...