Hallo Janos G. Komaromi wrote: > On 12/05/2016 01:02 PM, Bernhard Praschinger wrote: >> You can use the -U/--use-write Option and see if that helps. > Does not help, all I hear is a pop in the beginning, then nothing. See > my command and output below: > [apu@andraslinux ~]$ glav -p S -U +n -v 2 record.avi > ++: INFO: [lavplay] Norm set to NTSC > ++: INFO: [lavplay] Initialising SDL > ++: INFO: [lavplay] SDL YUV overlay: hardware > ++: INFO: [lavplay] Using read(2)/write(2) system call for > capture/playpack > ++: INFO: [lavplay] Output norm: NTSC > ++: INFO: [lavplay] Output dimensions: 320x240 > ++: lavtools version 1.9.0 > ++: ++ WARN: [lavplay] Unable to set negative priority for audio thread. > ++: ++ WARN: [lavplay] Pthread Real-time scheduling for audio thread > could not be enabled. > ++: That output looks ok. I guess that adding the +n should not make any difference.
>> Did you check the mixer settings when you play back the file ? > cat anytextfile.txt > /dev/dsp produces loud noise in speakers Ok. >> It could be that environment Variable LAV_AUDIO_DEV is set wrong. >> >> Can you run lavinfo filename.avi and post at least the audio related >> info, it should look like that: >> has_audio=1 >> audio_bps=4 >> audio_chans=2 >> audio_bits=16 >> audio_rate=44100 >> ---ENDE--- > See below:: > [apu@andraslinux ~]$ lavinfo record.avi > video_frames=554 > video_width=320 > video_height=240 > video_inter=p > video_norm=NTSC > video_fps=29.970629 > video_sar_width=1 > video_sar_height=1 > max_frame_size=19220 > chroma=422 > has_audio=1 > audio_bps=1 > audio_chans=1 > audio_bits=8 > audio_rate=44100 > num_video_files=1 What was the setting when you did record the audio signal ? I would guess that it was mono and 8Bit Samples and 44.1kHz samplerate. I haven't seen such a setup long time ago. It can be that lavplay/glav have problems (=bug) playing such a audio stream back. Can you try recording in Stereo, 16Bit and 44.1kHz ? And see if that makes any difference ? You can split the audio and video with lavtrans, and add a WAV file to the video with lavaddwav. > also: > My modules, excerpted from lsmod: > ... > snd_intel8x0 19052 0 > snd_ac97_codec 76031 1 snd_intel8x0 > ac97_bus 618 1 snd_ac97_codec > snd_pcm_oss 27105 0 > snd_mixer_oss 9866 1 snd_pcm_oss > snd_pcm 40209 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss > snd_timer 11572 1 snd_pcm > snd 29851 6 > snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer > soundcore 3105 1 snd > snd_page_alloc 4565 2 snd_intel8x0,snd_pcm > ... That lookes good. > Thanks for your answer; I did receive the email correctly and responding > here to it. > Hope we can get to the bottom of this. auf hoffentlich bald, Berni the Chaos of Woodquarter Email: shadowl...@utanet.at www: http://www.lysator.liu.se/~gz/bernhard ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
