Re: [FFmpeg-user] How to make partially transparent png image

2015-06-27 Thread compname
At 6/27/2015 09:02 PM, you wrote: Hi, In normal png file, there is no alpha channel, and there is color in the background. If there is alpha channel in png files, the background can be transparent, and the object in png file can be partially transparent. How to make a png file with alpha

[FFmpeg-user] How to make partially transparent png image

2015-06-27 Thread qw
Hi, In normal png file, there is no alpha channel, and there is color in the background. If there is alpha channel in png files, the background can be transparent, and the object in png file can be partially transparent. How to make a png file with alpha channel, so that, the background is t

[FFmpeg-user] Question about audio files.

2015-06-27 Thread jd1008
Have mp3 files that were recorded in noisy environment where there is a lot of low frequency hum, and the speaker's voice is just barely about that noise's frequency. It is really a great effort trying to comprehend what's being said. The files are lectures from the late 60's and early 70's and 80

Re: [FFmpeg-user] how to use alpha channel to make transparent effect

2015-06-27 Thread compname
At 6/26/2015 02:15 AM, you wrote: Paul B Mahol gmail.com> writes: > IMHO OP actually wants overlay filter. No, he wants to make the opaque parts of the logo slightly transparent. Carl Eugen I just went through something like this, except I had another video that I wanted a transparent over

Re: [FFmpeg-user] Silence Removal

2015-06-27 Thread Paul B Mahol
On 6/27/15, sk8f wrote: > I have an audio file which has the following specifications. > Codec: MPEG AAC Audio (mp4a) > Channels: Stereo > Sample rate: 44100 Hz > Bitrate: 253 kbps > > It has both leading and trailing silence. > I want to remove the silences AND keep the quality intact. > > So far

[FFmpeg-user] Silence Removal

2015-06-27 Thread sk8f
I have an audio file which has the following specifications. Codec: MPEG AAC Audio (mp4a) Channels: Stereo Sample rate: 44100 Hz Bitrate: 253 kbps It has both leading and trailing silence. I want to remove the silences AND keep the quality intact. So far I've tried ffmpeg -i 1.m4a -af silenceremo

[FFmpeg-user] How to make partial transparent png image

2015-06-27 Thread qw
Hi, In normal png file, there is no alpha channel, and there is color in the background. If there is alpha channel in png files, the background can be transparent, and the object in png file can be partially transparent. How to make a png file with alpha channel, so that, the background is t

Re: [FFmpeg-user] how to blend logo and video with transparent effect

2015-06-27 Thread qw
At 2015-06-28 00:50:30, "Paul B Mahol" wrote: >On 6/27/15, qw wrote: >> At 2015-06-27 00:21:56, "Paul B Mahol" wrote: >>>On 6/26/15, Paul B Mahol wrote: On 6/26/15, qw wrote: > Hi, > > I use the below command to blend logo image and video together with > transparent effect

Re: [FFmpeg-user] how to blend logo and video with transparent effect

2015-06-27 Thread Paul B Mahol
On 6/27/15, qw wrote: > At 2015-06-27 00:21:56, "Paul B Mahol" wrote: >>On 6/26/15, Paul B Mahol wrote: >>> On 6/26/15, qw wrote: Hi, I use the below command to blend logo image and video together with transparent effect: ffmpeg -i ./file1.mp4 -i ./logo.jpg -filter_comp

Re: [FFmpeg-user] how to blend logo and video with transparent effect

2015-06-27 Thread qw
At 2015-06-27 00:21:56, "Paul B Mahol" wrote: >On 6/26/15, Paul B Mahol wrote: >> On 6/26/15, qw wrote: >>> Hi, >>> >>> I use the below command to blend logo image and video together with >>> transparent effect: >>> ffmpeg -i ./file1.mp4 -i ./logo.jpg -filter_complex >>> blend=all_mode=overlay >

[FFmpeg-user] how to blend/overlay a logo with transparent background and a video into a resulting video with transparent effect

2015-06-27 Thread qw
Hi, My question is, how to blend or overlay transparent logo and video into video with transparent effect by ffmpeg. Transparent logo image is like the image with the below link. There is no color in the background of the logo image, so the background is transparent. http://image.baidu.com/i?

Re: [FFmpeg-user] Converting .mov files playable on html5 players..but very slow

2015-06-27 Thread Robert Krüger
On Sat, Jun 27, 2015 at 8:30 AM, Dani A wrote: > I tried to convert a .mov file to mp4 using the above command and I > recieved the below errors. what is wrong? > > [root@test video]# ffmpeg -i MVI_0797.MOV -c:v copy -c:a copy > -movflags faststart MVI_0797-fast.MP4 > ffmpeg version 2.6.2- ht

Re: [FFmpeg-user] Converting .mov files playable on html5 players..but very slow

2015-06-27 Thread Henk D. Schoneveld
On 27 Jun 2015, at 08:30, Dani A wrote: > I tried to convert a .mov file to mp4 using the above command and I recieved > the below errors. what is wrong? Read and try to understand what the error is telling you. Go back in the mail and read what I tried telling you what does and does not work.