0
votes
1answer
65 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 ...
1
vote
1answer
989 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 ...
4
votes
1answer
2k 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 ...
5
votes
2answers
6k 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 ...
2
votes
1answer
175 views

Proper encoding for long videos from online meetings?

I'm taking responsibility for maintaining a collection of recordings from online meetings, and I'm at a loss to determine which encodings I should use for them. The videos are coming from GoToMeeting, ...
3
votes
1answer
4k views

FFmpeg MKV to MP4 remux whilst converting all audio tracks to AAC

I had a ffmpeg command that would successfully remux an mkv to a iTunes compatible mp4. However it only took the first audio stream regardless of language. I want to remux all audio streams, or at ...
2
votes
3answers
3k views

Reduce size of MP4

I have a MP4 file with a lengh of 22:44. Here are the details: Video: width: 720 px height: 404 px data bitrate: 1022 kBit/s overall bitrate: 1182 kBit/s fps: 24 codec: H264 - MPEG4 AVC ...
5
votes
2answers
6k views

FFmpeg drops frames when encoding a png image sequence into an x264 mp4 video

I'm trying to encode an image-sequence (frame0001.png, frame0002.png, ... , frame0160.png) into an x264 video using the following command: ffmpeg -i frame%04d.png -sameq -r 24 out.mp4 After ...
15
votes
3answers
13k views

Convert from MOV to MP4 Container format

I have a digital camera that records nice 1080p H.264 format but unfortunately it uses the MOV container format. Basically I have nothing but the camera and VLC that play this format natively. Is ...
2
votes
1answer
293 views

Can I transcode a video if I have an application that can play it?

My condo complex was burglarized last week and I've been tasked with retrieving the video from our security system to provide to law enforcement. The system is an older DVR (DiViS DVR - warning: PDF ...
4
votes
1answer
4k views

How do I convert the format of an audio track inside an MP4 video?

I have an MP4 File with an AVC video track and an MP3 (not AAC) audio track. Video: MPEG4 Video (H264) 1920x1080 [Video] Audio: MPEG Audio 44100Hz stereo 192kbps [Audio] While some video players ...
2
votes
3answers
4k views

Why Handbrake compressing a video from a DVD can become 300MB, 1GB, or 2GB when the original should be only 600MB?

Handbrake can convert a DVD clip which is about 30 minutes to a 300MB .mkv file. For experiment, I tried also 1GB file size and 2GB, and they both came out as 1GB or 2GB. But I estimate that the ...