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1answer
64 views

How can I avoid Quicktime Vulnerability with h.264 encoded MP4 files?

I posted this earlier on SuperUser, but realized that this is likely the more appropriate forum for my question. We have several thousand very large MP4 files that have been encoded over the past ...
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1answer
81 views

How to prevent lossy re-encode of low-bitrate videos uploaded to YouTube

I have a huge number of low-res Flash videos (480x270, 30 fps, 800 Kbps) and I want to resample all those videos in 1280x720 with some added spatial sharpening and lomo filters to make them look ...
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1answer
106 views

How to set double fps for tbc option of video

I need to set tbc option for output video. For example, input video has 25 fps with 50 tbc and my encoded video has 25fps with 25 tbc. I used settb and video_track_timescale but these options did not ...
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1answer
55 views

H.264 on analog camera

Years ago I bought Vitamin D Video software for videosurveillance, which doesn' support H.264, but only mpeg-4. Currently I'm using two cheap analog cameras (RCA, PAL) connected to pc through 1 usb ...
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1answer
54 views

Premiere Pro CC export produces dark, muddied video

I've dug around numerous forums and have had no success finding a solution to my issue - .mp4 files color corrected in Premiere and exported in H.264 end up being unacceptably dark, the colors ...
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1k views

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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0answers
177 views

Using h264 in loseless mode brings small unexpected results

I got curious on ffmpeg screen capture capabilities and started messing around with a simple realtime capture test in h264. ffmpeg -f dshow -i video="screen-capture-recorder" -video_size 1920x1080 ...
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0answers
195 views

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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0answers
58 views

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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0answers
606 views

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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28 views

H264 encoding double image problem

I am getting double image like following with h264 encoding. This is the original image What could I be doing wrong here?