8 votes

How to extract MOOV atom/metadata from MP4 file?

Maybe I'm a bit late, but I'd use bento4 mp4dump, it's really easy to install on mac with brew brew install bento4 mp4dump 1.mp4 [ftyp] size=8+16 major_brand = iso5 minor_version = 200 ...
SkarXa's user avatar
  • 181
5 votes
Accepted

ffmpeg **doubled** my duration

By default, ffmpeg treats image sequence and raw video inputs as having a native rate of 25 fps unless told otherwise. So, the -r 50 duplicates each frame. Use ffmpeg -framerate 50 -i imageSeq-%06d....
Gyan's user avatar
  • 33.2k
5 votes
Accepted

Problem converting TS to MP4 container with ffmpeg

Update: The VLC TS is malformed. First run ffmpeg -i vlc-output.ts -c copy ffmpeg-output.ts and then ffmpeg -i ffmpeg-output.ts -c copy working.mp4 The main thing that looks off is the timebase ...
Gyan's user avatar
  • 33.2k
3 votes
Accepted

How does QuickTime Player know when do play a video in HiDPI/Retina/@2x mode?

The specific atom is in the trak metadata. When the com.apple.quicktime.pixeldensity metadata has the value 0x30, quicktime will play it at double the DPI. There is currently not very good support for ...
hughes's user avatar
  • 146
3 votes
Accepted

Output of FFmpeg has a "slow motion" part - what is it and how to avoid?

Your source is variable frame-rate with a peak rate of 120 and an average rate of close to 60. Editors tend to want constant frame rate streams. If you can interpret your whole transcoded file as 120 ...
Gyan's user avatar
  • 33.2k
3 votes

How to extract MOOV atom/metadata from MP4 file?

You can also use qtfaststart -l fileName which outputs something more human readable like : $ qtfaststart -l myFile.mp4 ftyp (32 bytes) free (8 bytes) mdat (283805466 bytes) moov (3541465 bytes) The ...
SebMa's user avatar
  • 175
2 votes
Accepted

best alternative to QuickTime .mov

Apple is dropping support for the player, so no new releases, but the format remains and can be decoded by recent versions of CC without needing Quicktime to be installed. See http://blogs.adobe.com/...
Gyan's user avatar
  • 33.2k
1 vote
Accepted

ffmpeg, audio tracks, and QuickTime player

Alain1A45 posted the correct answer as a comment, the following command creates an output file with working audio tracks for QuickTime player: ffmpeg -i in.mp4 -vcodec copy -tag:v hvc1 -acodec copy -...
janeden's user avatar
  • 121
1 vote
Accepted

How to convert ProRes/Quicktime MOV to instagram-friendly with ffmpeg so I can post it on IG

For a web-compatible encode, you will need the video stream to have a yuv420p pixel format. ProRes, as a editing codec, uses different pixel formats. Use ffmpeg -i in.mov -pix_fmt yuv420p -c:v libx264 ...
Gyan's user avatar
  • 33.2k
1 vote

How can I prevent YouTube from distorting the audio in my QuickTime video?

The problem was that different clips had different frame rates. My phone records a variable frame rate around 30 fps, the Zoom video had a fixed frame rate of 25 fps, the FB live video was variable ...
Dave Schweisguth's user avatar
1 vote

How to copy timecode value from a video to clipboard on a mac

This can be done in Apple's Motion (but not FCPX for some reason). To do so, create a new project and import your footage. You'll want the project's frame rate and starting timecode to match the ...
user1118321's user avatar
  • 2,156
1 vote

Which settings • preferences • preset to use in Adobe Premiere when exporting in QuickTime (.mov) format to avoid lines?

Looks like you have interlaced turned on. Try a different method of frame blending
Just A Lemon Stealing's user avatar
1 vote

MediaInfo Fourcc Values

FourCCs are Microsoft's ID tags for streams e.g. avc1 for H.264/AVC or mp4a for an AAC audio stream. The container doesn't really matter. If you want to change the FourCC, use ffmpeg like so ffmpeg -...
Gyan's user avatar
  • 33.2k
1 vote

Quicktime rendering issue

it seems to me that you are trying to overwrite an existing file. Try to change the name from your file (Test 1.mov) to something different and that is not already used on your Exports folder. Let me ...
Ruben Monteiro's user avatar
1 vote

Missing video codec in Quicktime

I would try two solutions, obviously on backups of the files, not the originals. First there is the 'untrunc' tool which tries to copy over additional information from a working file into a broken ...
Hans Meiser's user avatar
1 vote

Missing video codec in Quicktime

You can try to repair the file with ffmpeg, a free command-line tool, like so ffmpeg -analyzeduration 1G -i input.mov -c copy -map 0 out.mov
Gyan's user avatar
  • 33.2k
1 vote

Why is a screencast produced by Quicktime (.mov) is much smaller than the converted MP4 file?

I don't think it's the framerate. Maybe check with mediainfo to see more specific settings of each Codec. Apart from the bitrate, there are plenty of settings that can influence file size, even when ...
Hans Meiser's user avatar
1 vote

Resolve Bad public atom found when using ffmpeg copy

This is kinda tricky. Apparently, the video track you're trying to copy consists of multiple video streams of possibly differing properties stitched together. ffmpeg's MOV muxer (the part that copies ...
Gyan's user avatar
  • 33.2k
1 vote
Accepted

Losslessly converting Microsoft DV to Quicktime DV

I doubt Adobe Media Encoder is rewrapping the video stream. To copy the data losslessly from a Type 1 to Type 2 DV-AVI or to MOV, use ffmpeg, a free command-line tool, like so ffmpeg -i input.avi -c ...
Gyan's user avatar
  • 33.2k
1 vote

After effects cc render time issues

I usually export as a ProRes Quicktime movie from After Effects directly, then convert my ProRes file to h264. I keep the ProRes as a master file, and compress the h264 as needed. Also sometimes ...
tomh's user avatar
  • 7,782
1 vote

FFMPEG prores_ks 4444 color shift

I believe the problem lies in how FFMPEG does the RGB->YUV conversion by default. This option specifies the use of the bt709 color space for the conversion, instead of the default of bt601. This ...
Bryan Fordney's user avatar
1 vote

FFMPEG not writing quicktime "COLR" atom

That is an experimental flag, so you will have to use -movflags +write_colr -strict experimental
Gyan's user avatar
  • 33.2k
1 vote

Colors look different after export

I have this issue forever...found a solution thanks to this website https://isaac-molina.com/downloads/ download his luts aplly the correct lut to an adjustment layer placed on top of you project (in ...
Algoet Stijn's user avatar
1 vote

Colors look different after export

You may need to perform a “trim pass” to export to Rec709 colour space. See: https://images.apple.com/final-cut-pro/docs/Wide_Color_Gamut.pdf Matching colors in Rec. 2020 and Rec. 709 masters When ...
SaltySub2's user avatar
  • 151
1 vote

FFMpeg crop filter doesn't change orientation

What's happening here is two things: 1)your video is portrait but stored as a landscape matrix and ffmpeg is applying autorotate so that all players natively display it in what ffmpeg thinks is the ...
Gyan's user avatar
  • 33.2k

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