video jumping problem on IPod

[g8878035]

I use MP4 converter that programming by myself to convert mpeg stream from my compoany's MPEG encoder. It can play on quicktime player correctly and jumping problem would not be happened on quicktime player. But I still use this file on IPod, the jumping problem will happen.

Actually, if the mp4 stream only include I frame, jumping problem will not be happened on IPod. This jumping problem seems to be happened that mp4 stream which include both of I and P frame.
Why it just happen on IPod?
Has someone met this problem or know why did it only happen on IPod?Could you please give me some suggestions to slove this problem?

Thanks!

ps:
1. Jumping problem like the video pauses then it jumps to another place.
2. MP4 stream for testing don't include audio data because it make the experiment becomes more simply.

Here is the information of my mp4 stream.

mp4 debug: found Box: ftyp size 20
mp4 debug: found Box: mdat size 2552176
mp4 debug: skip box: "mdat"
mp4 debug: found Box: moov size 3482
mp4 debug: found Box: mvhd size 108
mp4 debug: read box: "mvhd" creation 694977d-48h:00m:00s modification 694977d-48h:00m:00s time scale 1000 duration 694977d-48h:00m:00s rate 1.000000 volume 1.000000 next track id 2
mp4 debug: found Box: trak size 3366
mp4 debug: found Box: tkhd size 92
mp4 debug: read box: "tkhd" creation 694977d-48h:00m:00s modification 694977d-48h:00m:00s duration 694977d-51h:03m:20s track ID 1 layer 0 volume 0.000000 width 320.000000 height 240.000000
mp4 debug: found Box: mdia size 3266
mp4 debug: found Box: mdhd size 32
mp4 debug: read box: "mdhd" creation 694977d-48h:00m:00s modification 694977d-48h:00m:00s time scale 29970 duration 722949d-36h:00m:00s language ```
mp4 debug: found Box: hdlr size 45
mp4 debug: read box: "hdlr" handler type vide name VideoHandler
mp4 debug: found Box: minf size 3181
mp4 debug: found Box: vmhd size 20
mp4 debug: read box: "vmhd" graphics-mode 0 opcolor (0, 0, 0)
mp4 debug: found Box: dinf size 36
mp4 debug: found Box: dref size 28
mp4 debug: found Box: url size 12
mp4 debug: read box: "url" url: (null)
mp4 debug: out of bound child
mp4 debug: read box: "dref" entry-count 1
mp4 debug: out of bound child
mp4 debug: found Box: stbl size 3117
mp4 debug: found Box: stsd size 193
mp4 debug: found Box: mp4v size 177
mp4 debug: found Box: esds size 91
mp4 debug: found esds MPEG4ESDescr (77Bytes)
mp4 debug: found esds MP4DecConfigDescr (69Bytes)
mp4 debug: found esds MP4DecSpecificDescr (54Bytes)
mp4 debug: out of bound child
mp4 debug: read box: "vide" in stsd 320x240 depth 24
mp4 debug: out of bound child
mp4 debug: read box: "stsd" entry-count 1
mp4 debug: found Box: stts size 24
mp4 debug: read box: "stts" entry-count 1
mp4 debug: found Box: stss size 132
mp4 debug: read box: "stss" entry-count 29
mp4 debug: found Box: stsc size 28
mp4 debug: read box: "stsc" entry-count 1
mp4 debug: found Box: stsz size 1368
mp4 debug: read box: "stsz" sample-size 0 sample-count 337
mp4 debug: found Box: stco size 1364
mp4 debug: read box: "co64" entry-count 337
mp4 debug: out of bound child
mp4 debug: out of bound child
mp4 debug: out of bound child
mp4 debug: out of bound child
mp4 debug: out of bound child
mp4 debug: out of bound child
mp4 debug: dumping root Box "root"
mp4 debug: | + ftyp size 20
mp4 debug: | + mdat size 2552176
mp4 debug: | + moov size 3482
mp4 debug: | | + mvhd size 108
mp4 debug: | | + trak size 3366
mp4 debug: | | | + tkhd size 92
mp4 debug: | | | + mdia size 3266
mp4 debug: | | | | + mdhd size 32
mp4 debug: | | | | + hdlr size 45
mp4 debug: | | | | + minf size 3181
mp4 debug: | | | | | + vmhd size 20
mp4 debug: | | | | | + dinf size 36
mp4 debug: | | | | | | + dref size 28
mp4 debug: | | | | | | | + url size 12
mp4 debug: | | | | | + stbl size 3117
mp4 debug: | | | | | | + stsd size 193
mp4 debug: | | | | | | | + mp4v size 177
mp4 debug: | | | | | | | | + esds size 91
mp4 debug: | | | | | | + stts size 24
mp4 debug: | | | | | | + stss size 132
mp4 debug: | | | | | | + stsc size 28
mp4 debug: | | | | | | + stsz size 1368
mp4 debug: | | | | | | + stco size 1364
mp4 debug: ISO Media file (isom) version 512.
mp4 debug: find 1 tracks
mp4 debug: track[Id 0x1] read 337 chunk
mp4 debug: track[Id 0x1] read 337 samples length:11s
main debug: selecting program id=0
mp4 debug: adding track[Id 0x1] video (enable) language undef
main debug: using demux2 module "mp4"
mp4 warning: DEMUX_GET_FPS unimplemented !!

main debug: looking for decoder module: 27 candidates
ffmpeg debug: libavcodec initialized (interface 3348736 )
ffmpeg debug: postprocessing disabled
ffmpeg debug: using direct rendering
ffmpeg debug: ffmpeg codec (MPEG-4 Video) started
main debug: using decoder module "ffmpeg"
main debug: thread 4060 (decoder) created at priority 0 (input/decoder.c:159)
main debug: `C:\Documents and Settings\sp_hsu\獢\MPEG4-320x240-04-09-19-2.mp4' successfully opened
mp4 debug: track[Id 0x1] using Sync Sample Box (stss)
mp4 debug: stts gives 0 --> 0 (sample number)
main debug: no usable vout present, spawning one
main debug: window size: 320x240
main debug: looking for video filter module: 1 candidate
main debug: using video filter module "adjust"
main debug: waiting for thread completion
adjust debug: spawning the real video output
main debug: window size: 320x240
main debug: looking for video output module: 6 candidates
vout_directx debug: creating DirectXEventThread
main debug: waiting for thread completion
vout_directx debug: DirectXCreateWindow
vout_directx debug: created video sub-window
main debug: thread 4160 (DirectX Events Thread) created at priority 0 (directx.c:278)
vout_directx debug: DirectXEventThread running
vout_directx debug: DirectXInitDDraw
main debug: Registering subpicture channel, ID: 2
main debug: Registering subpicture channel, ID: 3
main debug: Registering subpicture channel, ID: 4
main debug: Registering subpicture channel, ID: 5
vout_directx debug: directx-device:
vout_directx debug:
vout_directx debug: screen dimensions (0x0,1024x768)
vout_directx debug: DirectDraw Capabilities: overlay=1 yuvoverlay=1 can_deinterlace_overlay=1 colorkey=1 stretch=1 bltfourcc=1
vout_directx debug: End DirectXInitDDraw
vout_directx debug: DirectXCreateDisplay
vout_directx debug: DirectXCreateClipper
vout_directx debug: disabling screen saver
main debug: using video output module "vout_directx"
main debug: waiting for thread completion
vout_directx debug: NewPictureVec overlay:yes chroma:YV12
vout_directx debug: YUV overlay created successfully
vout_directx debug: End NewPictureVec (succeeded)
main debug: got 1 direct buffer(s)
main debug: picture in 320x240 (0,0,320x240), chroma I420, ar 4:3, sar 1:1
main debug: picture user 320x240 (0,0,320x240), chroma I420, ar 4:3, sar 1:1
main debug: picture out 320x240 (0,0,320x240), chroma I420, ar 4:3, sar 1:1
main debug: direct render, mapping render pictures 0-6 to system pictures 1-7
main debug: thread 4192 (video output) created at priority 1 (video_output/video_output.c:421)
main debug: got 8 direct buffer(s)
main debug: picture in 320x240 (0,0,320x240), chroma I420, ar 4:3, sar 1:1
main debug: picture user 320x240 (0,0,320x240), chroma I420, ar 4:3, sar 1:1
main debug: picture out 320x240 (0,0,320x240), chroma I420, ar 4:3, sar 1:1
main debug: direct render, mapping render pictures 0-6 to system pictures 1-7
main debug: thread 4128 (video output) created at priority 1 (video_output/video_output.c:421)

[dionoea]

Is this "Coffee Corner" related ?

[DJ]

I don't know? I don't drink Coffee any more, anyone for a spot of tea? It is a valid question and is not necessarily VLC related. If I had a guess as to the answer it may be bitrate related.

Also considering that audio is not present there is no sync and video will generally run at best speed, which very well may not be right.

[lanlan]

Is it the only video your converted that jumps on iPod? I mean if other converted video has the same problem, and if other video (original and not converted) has the same problem? If all video including converted and original has the same problem, I think you should go the support center with your iPod. If only converted video has this problem, I think you may switch to another MP4 Converter and I suggest this one.

[lanlan]

anyone coming yet? thought its hot.

[sky8825]

anyone coming yet? thought its hot.

i don't think so