2
votes
1answer
2k views

ffmpeg: Could not find codec parameters for stream 0 (Video: h264) unspecified size

I try to convert a video from .raw to .mp4. For this reason I did download, build and install both x264 and ffmpeg. However, command: ffmpeg -f h264 -i output.raw -vcodec copy output.mp4 fails with ...
0
votes
1answer
1k views

Use ffmpeg copy codec to combine *.ts files into a single mp4

I've got a bunch of ts segments described by a single index.m3u8 file: index.m3u8 segment1_0_av.ts segment2_0_av.ts segment3_0_av.ts segment4_0_av.ts segment5_0_av.ts I know they ...
5
votes
2answers
7k views

Converting avi encoded with IMM5 codec

As part of a legal matter, I received a copy of a security video encoded using what appears to be an 'IMM5' codec, apparently often used by police. I also received a copy of 'BackupPlayer', which can ...
0
votes
0answers
68 views

Conditional conversion of media

I have a collection of videos in various formats. While all of them play perfectly on my computer, it's a different matter when I put them on a stick to watch on my TV. I would like to convert them ...
3
votes
2answers
5k views

How does bitrate differ for the same resolution and framerate?

Reading about video quality I found that it depends of resolution, frames per second and bitrate, which decides the size of the video. My question is how the bitrate is calculated and how it can ...
1
vote
0answers
378 views

Video format/codec for PowerPoint 2007?

I would like to add video files to PowerPoint 2007 slides (on PC). 1) Which codec should I use for maximum quality? 1b) Does this depend on computer-specific installed plugins/codecs? 2) Is there ...
1
vote
1answer
742 views

Why are my WebM files larger than OGG and MP4 versions?

I have some OGG and MP4 files and I am converting them WebM for use on my website. I have used VLC to convert to WebM. What I have noticed is the WebM file is 8MB while the MP4 and OGG are around ...
2
votes
1answer
290 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
2answers
6k views

What's the difference between FFmpeg's “-vcodec copy” and “-sameq”?

What is the difference between using -vcodec copy and -sameq with FFmpeg? Do they do the same thing?
2
votes
3answers
3k views

How to hardcode subtitles into an AVI without loss of quality

I am using a program to hardcode subs into an AVI file. The problem is that is recompresses the video using a codec. I don't see why this is necessary and causes a noticeable loss of quality. Is there ...
-2
votes
1answer
381 views

Protect video file using DRM

I would like to protect a video file (can be any format, avi, wmv, mkv) Something like, user should only be allowed to view first 10 seconds of video or a another video clip showing link to site where ...